I learned enough to know it's a game not worth actively playing. Buy an index fund, do dollar cost averaging, and stay hands off. Why?
. Big shot fund managers can't consistently beat the market, and they do this 40+ hours a week -- why should you do better?
. Stocks should be a long term investment; the market has always had a positive return over any 20 year period. Index fund and don't worry about it.
. You'll do a lot better applying energy to your start-up or whatever you're working on than dwelling on ticker prices.
. You're probably not playing with enough money to make it worth worrying about
Ramit Sethi's "I Will Teach You To Be Rich" book is a great overview of personal finance. He convinced me to automate my investments and not worry about following the market day to day.
It blows my mind that this is taken to be true. There is a LOT of literature that "supports" these ideas, but a lot to the contrary as well. And there's lots of garbage out there if your primary source for this data is Google searches or a few free blogs (I like Sethi's blog, just don't buy into a lot of it).
>.Big shot fund managers can't consistently beat the market...
1. My understanding is that literature regarding this generally refers to the mutual funds. I've also heard it voiced that the mutual fund community on average doesn't beat the market. That's not the same thing.
I generally thing that HN types are the types who are smarter and likely competitive with the best and the brightest in finance.
>. Stocks should be a long term investment;
Why?
> the market has always had a positive return over any 20 year period.
1. Some people want returns in timespans of shorter than 20 years.
2. Not all markets have had positive returns over all 20 year periods. Even US equity markets have had losing 10 year periods, and inflation adjusted returns make the picture bleaker as well. I'd say the SPX has a good shot at not beating inflation adjusted returns for the 20 year period beginning in 2000.
http://www.simplestockinvesting.com/SP500-historical-real-to...
3. "Positive" isn't good enough for everyone.
>.You're probably not paying with enough money to make it worth worrying about
Gotta start somewhere. My first program was "hello world."
Investing time in learning about financial markets isn't for everyone, just like software startups isn't for everyone.
Facebook:Renaissance :: <insert YC startup here>:Jane Street Capital :: "hello world":making your first trade
Learning to trade or invest or code or build startups is just another skill.
> I generally thing that HN types are the types who are smarter and likely competitive with the best and the brightest in finance.
Thinking you're smart enough to compete with people who are not only very smart, but also experienced and dedicated sounds like a good way to get royally screwed if you're not careful.
> Learning to trade or invest or code or build startups is just another skill.
Absolutely. I started with $2000 and doubled it many times over to pay for tuition. But I read everything I could and watched my stocks religiously.
I would buy and sell every few days or weeks to make use out of every 5% gain or loss in the stock's value.
Yes, the fees (etrade at $20 a trade) were ridiculous. They might have cost me 25% of my gains but at the end of the day my gains were still up there. It's much cheaper to trade now.
If you have the time to invest then I would learn foreign exchange instead. You can have much more leverage there without much initial capital. I would love to spend more time on trading my money but as you move on from school life just gets busier. So go read and make some money.
PS: I should say I lost my fair share initially as well.
Somebody else on this thread has already plugged Interactive Brokers.
They're cheap. For US stocks its $.005 to $.01 per share (with a $1 min per order) or something. I think most people here are interested in trading stocks (if interested at all).
I've found that I fall into the "not playing with enough money" camp. The difference between the "gotta start somewhere" attitude of software development is trading costs money. I found I was consistently making 20-30% returns, but after trading fees it was a lot more like 0-5%.
You can write as many Hello World programs as you want for no incremental fee — but every trade costs money, so you need to trade enough to offset the feeds.
Most things worth learning come with a cost. Writing code costs time.
Regarding 20-30% returns on fake money, but 0-5% on real money, trading fees should be an assumption you make when you trade with fake money. I'm guessing you did, but if there's such a wide disparity, it just means you have to re-evaluate. Writing strategies is just like a software startup. Be agile, course correct often, when expectations differ from actual results, find out why.
If trading costs is really your primary issue, I guess I'm plugging http://www.algodeal.com since I just discovered them over the weekend and it sounds sort of cool and like a good platform to learn to do it with no cost (except the cost of many Hello World programs).
[I am in no way affiliated with Algo Deal. I haven't even really looked into it that much. But their splash page sounds cool and I'm frankly envious that its their startup and not mine]
Fund managers: it is even worse. Because customers will choose the fund with the best tack record, managers have an incentive to take high risks when the time to report comes near. If they win, they win big, if they lose, they lose just their bonus.
What i haven't understood yet is why index funds are supposed to be so great. At least if everybody would just buy undex funds, it wouldn't work. Also, who picks the stocks in the index? Why would index funds be better than just buying some random stocks?
If I find an inefficiency or loophole in the markets, I prefer to fix it. However, hedge funds tend to exploit it & make money through automation & http://en.wikipedia.org/wiki/Algorithmic_trading
It is noble that you prefer to fix it. I consider that "fixing" broken things is a task that adds value to the world. I think that value creation generally is something that is rewarded (not necessarily monetarily), and that "fixing" inefficiencies or loopholes in the markets is rewarded with money.
I'm not sure what "exploit" means or why you seem to use "make money" as a bad thing. Society uses "automation" in a wide range of tasks that was not previously possible. In finance, like in other cases where we automate previously rote tasks, I think its important to check it, because bad code running on tight loops can have disastrous consequences.
I'll call total bullshit on the idea that stocks provide positive returns over long time periods. (EDIT: note that you don't always get to pick the time period, life has that nasty habit of forcing the situation)
Over the last 25 years, including the recent meltdown, the best investment was long US treasuries.
My advice is to do your own research buy a small group of stocks you know very well, preferably that pay a dividend, and hold them. When they go down, if you are still a believer buy more.
Stay away from mutual funds, they are loaded with hidden fees, their managers are like cattle, and they typically do well only in bull markets when everyone does well.
Yes to everything the parent said. You can learn most of what you need to know from these two books:
"The Investor's Manifesto: Preparing for Prosperity, Armageddon, and Everything in Between" - William J. Bernstein
"The Random Walk Guide To Investing" - Burton Malkiel
Do I believe that the market is completely efficient, and that it's impossible to beat it over the long term? Absolutely not. But I do believe that there are very few people in this world that can, and I'm darn sure I'm not one of them.
Take 80% or 90% of your portfolio, whatever suits you, and follow an index-based approach to investing. Have as much fun as you want with the other 10% or 20%. Best of both worlds.
It's a zero sum game, but one might be smarter than others. Some companies doing algorithmic trading consistently skim off their share of the market's inefficiencies.
What I'm wondering is how much of an investment it would be to get into high-frequency trading for yourself. Any idea?
I love the idea (for the guys who run it AND the guys who it opens up opportunities for).
Might be something you could play with.
Depending on what sort of HF strategy you want to run, I imagine this can be done relatively cheaply. (300K-800k? Pretty wide range I know... that's all I got though).
Obviously your strategies are limited, you're not competing with some of the super low latency firms for the fastest of opportunities because of hardware limitations or price prohibitive vendors/deals with exchanges or whatnot.
IAMA thread looks very interesting, thanks (although you never know when it's someone pretending to be something he's not).
I'm a bit skeptical of algodeal. If they are seriously doing this (actually licensing strategies and following them), wouldn't they be setting themselves up to get ripped off? It seems that if you know what strategy someone is going to use, you can use it against them (effectively changing the market between historical tests and a live run).
I actually think AlgoDeal sounds great, but can understand your skepticism.
I haven't really looked into it, but what it sounds like to me is they provide you a platform to build strategies and test them, play with fake money. They may optionally take your strategy and run it in the market. If it is successful, they split returns with you.
When you say they're setting themselves up to get ripped off, I think you're suggesting that Evil Person X may come up with a strategy A that does well enough in backtests, but is paired with a strategy B designed to rip off that strategy A. Then after AlgoDeal applies strategy A, I put my secret millions to work and make better returns for myself.
They don't HAVE to run your strategy. I'm assuming they're smart guys and have some selection criteria other than "performed well in backtests", so they'd try to choose strategies that were less likely to get ripped off by the evil person's counter-strategy. Also, I think of this as being the VC who seems massive dealflow. Half of it is the fun of seeing all the good ideas and picking the top ones. Some will still fail, but choosing from a much larger base of ideas is great. Plus they utilize their own expertise to tweak strategies for themselves.
Its basically YC for algo strategies, except they don't have to pay you, they can steal your startup and change it a bit, and they take a much bigger percentage (i'd guess 50-80%, based on what I think are something like industry standards).
Its quite common place in finance to have people give you strategies and give them a cut of the profits. This takes it to the next level: crowdsources strategies and removes the barrier to entry for a lot of smart people (trading costs) in exchange for the right to tap those ideas.
Regarding the IAMA thread: Small data point, but I've actually chatted with him a few times, and he seems legit. Can't verify his earnings or size he trades, but he seems to know his stuff.
When you buy shares they represent a share in a company. This company may rise in value due to good management, successful products, expanding into new markets, etc. If you sell your share at a higher price, no-one is going to lose the money you will earn, the company is just worth more than when you bought it.
Other securities may make you money in other ways, e.g. if you buy T-bills the FED is paying you interest on the money you effectively loan them.
Relative to the average market performance , making choices as to what to invest in, seems to be a zero-sum game (by definition, as the net total performance of the investments will be average), but I'm not a finance guru, so feel free to correct me.
What I think you are implying is that if you invest in companies part of some market index¹ and end up above the average performance of this index then someone else, who also invested only in companies in this index, will end up below the average.
This however is not zero sum game or has anything to do with markets or investments, it is just how averages work. You could apply the same logic to grades in a school class.
¹ There are lots of market indexes and they only cover a fraction of the investment possibilities and are often trade specific.
I think what you are saying is that if everyone invested very intelligently, then everyone would be better off, as more money would pour into the more viable ventures (is this what you mean?) I can agree with that, FWIW, but from the short-term algorithmic/high-frequency trader 's perspective (edit), this does not appear relevant (some nth order effect).
P.S. Traders often say how their work is useful to everyone, because it makes the markets more efficient. I wonder if it's true. The analogy I'm thinking about is frequent lane swervers on the freeway ("lane arbitrage"). Are they making the freeway more efficient for everyone? I don't think so.
All I was saying is that it is not a zero sum game.
As for invested very intelligently I don’t think you can define that, nor what it means for everyone [to] be better off and more trading of a stock does not mean more money go into the company the stock represent (assuming the stock is not sold directly by the company).
This is all very long-winded to get into here, but as a quick example of how this “intelligently” and “better off” is ambiguous I think we would be better off with more alternative energy, so people should invest in that. But a lot of these investments will likely turn out to be non-profitable (even cause a loss) but on the bright side, a lot of R&D in alternative energy will be done, which is good, and those companies with good projects may end out making a difference in the world, etc.
Why aren’t the prices going to rise higher and higher? There is absolutely nothing that says they shouldn’t (or they should for that matter).
And how does someone lose money if the prices stagnate? The prices have to actually drop for someone to lose money.
Fundamentally this stuff is pretty simple:
I have an idea for a business, I need $1,000,000 in startup capital. I sell 1,000 shares costing $1,000 each.
After a year my business is profitable and valued at $2,000,000. The stock is now worth $2,000. That means everyone who bought my stock now earned $1,000.
Who lost on this? you can say that the consumers who paid my company (to make it worth more) lost, but a) these are not part of the stock market, and b) my product may actually have saved them more than they spent.
Well in the long run, it IS a zero sum game. A stock is valued higher only if someone wants your stock. If no one is interested in buying your stock and you try to sell it, its value will be zero. Also, if everyone holding a certain stock starts selling it, in the end the value will drop down back to zero. So everything earned by someone is lost by someone else. The only real earnings which you get by owning the stock is the dividend which the company pays out.
It is true that if no-one wants the stock then the value of it will drop. This however should (under normal circumstances) only happen if the company is not profitable and is in debt (to the point where its physical assets amount to the same or less than its debt).
It is not a psychological game, i.e. if someone somehow managed to make the Microsoft stock drop to zero then I would effectively be able to get all of Microsoft for nothing, that’s a pretty sweet deal, and why that stock won’t drop to zero as long as they are profitable.
The “psychology” that affects the stock prices are in speculation about the future worth of a company, and that is why you see a disconnect between a company’s net worth and market cap — generally the market cap should be above its net worth, otherwise someone should buy all the shares and liquefy the company :)
Market players who didn't invest in your idea (you could call it "opportunity cost").
If the baseline strategy is "invest randomly", or "invest a little bit in everything", then those who deviated from it by way of not investing in your idea, lost.
It only makes sense to evaluate a market player's performance relative to some baseline strategy. I was trying to make this point elsewhere in this thread.
And how do you define "loss" and "gains" for market players?
PS: Your definition appears to be "you lost iff you left with less money than when you came in". OTOH, my definition is "you lost iff you made less money than if you would have if you'd invested it in an index fund".
If you are talking about the intrinsic value of your company's stock increasing, then it's definitely not a zero sum game. But they do pay out part of their profits (intrinsic value gains) as dividend. If we consider just the stock price fluctuations due to demand/supply (and no changes in the intrinsic value), then it is a zero sum game.
The way I like to think about this is, imagine a hypothetical company, let's call them ROCK. They have a wild business idea of mining asteroids in space. You spend all your money on this stock during their initial public offering and end up owning 1% of it. 40 years in the future, ROCK has had hundreds of successful mining missions and tremendous wealth was derived from the metals they have salvaged.
Through their efforts there are now thriving mining colonies living permanently in space, and a whole industry was created around their operations. Without the initial funds they received from their IPO, none of this would have been possible. As the years pass, they expand further and further into space, with no limits in sight. Another 10 years later you decide to cash in your 1% share and find yourself the proud owner of your own small moon.
Probably 10 - 50 million. You will need 5 - 10 hard core programmers, a network engineer, a trader or three, a bunch of the fastest servers around, etc. etc. This is an insane idea, I would not recommend it! (The margins are being pushed to zero as more and more companies get into this.)
I guess I meant excluding human labor (imagine that a bunch of programmers, etc. with the necessary skills wanted to do it). Would they need to rent a building next to the NYSE and put the machines there?
I don't do HFT, but with what our company does, I've spoken to a few people who do. So take all of this with a pinch of salt, but as I understand it, your execution and autonomous trading systems live in the same rack as your exchange/dark-pool endpoints. Your slower strategies can be offsite, as is the Big Red Button to close down your positions. Still, faster's invariably going to be better, all else being equal...
>The capital-gains tax is a reason not to get into short-term trading
In the same way taxes are a reason to not get into money making ventures.
Short term trading encompasses a lot of ideas. Some are good some aren't. Many "short term" trading strategies have significantly higher sharpe ratio's than Fool style investing. Fool investing is great. I learned a LOT from that site. But I also want returns in shorter time spans, so I'm willing to pay that capital gains tax.
Motley fool is a GREAT source for long term investing knowledge for anyone interested in that. A lot of other great classic investment texts are getting thrown around in this comment thread (Intelligent Investor, for one).
Its sort of in the same vein, but slightly shorter term, backed up by a lot of statistics. Basic principle: Choose the best 20 companies every year. Define "best" as top PE or some other really simple metric. You can tweak it a little as well based on your personal risk profile, desired industry exposure. Consistently outperforms the market.
The motleyfool is a site that looks amazingly like spam and reminds you of all the "earn 50 bazillion percent every hour using options!" emails you get, but is actually chock full of great information.
Greenblatt's book sounds shady as hell, but its a quick, easy read and quite informative, backed by just enough logic to make you want to try it.
it's not a zero sum game. The definition of zero sum games is "A situation in which one's gains result only from another's equivalent losses.". There are many aspects of a stock market that make it NOT sum to zero: the fact that things can go up or down in value with no one buying/selling (aka GAPS) itself makes it a positive/negative sum game. Not to mention taxes, broker costs, IPOs and all other 'game moves' that inject and/or take money out of the 'game'.
An interesting note on the zero sum discussion, while the stock market clearly is not a zero sum game options on the other hand ARE zero sum.
On the exercise date the payoff for the buyer of an option that's in the money will exactly match the loss of the seller. Vice versa if it's out of the money. Kind of neat.
I think for me this is the biggest question. Is it worth trying to get involved with something where there are N people who know more, move faster and have better connections that I do? I think the case for 'no' is pretty convincing.
BTW, your formatting is messed up, don't indent the points.
My POV = trading is zero sum (or worse, because transactions take money, and brokers are a guaranteed to win 3rd party in every transaction)
However, I don't think thats the right analogy.
Every trade in trading is like the credit card transaction you make towards Dropbox every month. That transaction is zero sum (with Amex skimming 1.7% and Spreedly taking some too, just like brokers). I buy a stock, for an agreed upon price.
Dropbox gets nothing if they don't provide value to the marketplace. You don't get customers in trading if you don't provide value to the marketplace. Every dropbox competitor takes dollars out of dropbox's pocket (so in that sense is zero sum across strategies). Every trade I take from Citadel is a trade they don't make.
There's lots of money flying around, its a big pie, I just want some crumbs.
Basically, startups get paid because they fill a market need.
Traders get paid because they fill a market need. If I create a strategy that nobody wants to trade against, I'll have no customers, make no trades, and will never get paid.
I'm not saying there aren't sketchy strategies (true in finance and web startups). I'm not on top of the whole flash orders story, and I think some people take advantage of weaknesses in the system. Thats true in every industry though.
The most important thing to realize is that trading and investing are different ball game.
I don't know much about investing but I did dabble in trading, especially penny stocks. No, I am not talking about those scam emails where they claim that their stock pick is going to go up 100% in a month. I am talking about realizing those penny stock scams and 'shorting' them to your advantage. I learned about shorting penny stocks from Timothy Sykes (http://www.timothysykes.com/) and have made some money. There are quite a few other traders who share their knowledge through blogs. Few blogs which I follow:
And most important tip: Trading is very risky. The saying '90% of the traders lose money' is spot on. Realize that trading is an extremely difficult profession and be very careful if you do decide to take the red pill.
By trying to incorporate programming into trading.
If you get an account with a company like Interactive Brokers, they offer an API. They also only charge $0.005 per share.
You can study a trading method called momentum trading, which is the idea of riding the curve for a very short period of time. For example, right after a financial statement is released, the company's stock is going to go up or down, depending on the statements results. You can write a program that immediately determines the direction the share price is going at the time in which the statement is public, then buy long or short depending on its direction. Then do the opposite when the program determines the up or down curve is leveling off.
Pretty interesting stuff, and it'll get you engaged.
The two major mental models which I've found helpful in understanding the market are the Efficient Market Hypothesis (EMH; http://en.wikipedia.org/wiki/Efficient_market_hypothesis) which explains how the market acts under idealized conditions of rationality. Temper this with learning about Behavioral Economics (http://en.wikipedia.org/wiki/Behavioral_economics) which covers issues of human perception and how us semi-rational beings actually act, such as perceiving a loss of $100 as twice as painful as a gain of $100.
The Intelligent Investor by Benjamin Graham is a wonderful book, but reads densely. In more recent editions contains thoughtful side commentary by Jason Zweig which help break up the text and give a more modern perspective. A key idea is the separation between investing and speculation: set aside some percentage of your portfolio for speculating, and experiment with it, but investing for the long-term is the way to go in the absence of something which allows you to escape the financial gravity of the efficient market.
A Random Walk on Wall Street by Burton Malkiel covers efficient market theory thoroughly. The Intelligent Asset Allocator by William Bernstein for approaches to constructing long-term portfolios.
Lots more to say on this issue, but hopefully some of these starting points will get you thinking.
Incidentally, heard a rumor (absolute speculation and it was probably made up by the person who told me) that Google was interested in financing an internal hedge fun and someone sent me this link.
Most large multinationals will have traders in their treasury teams. If you've got large reserves of currency in lots of currencies you need to manage currency and deflationary risk.
The Intelligent Investor by Ben Graham is a classic, and a good place to start. A Random Walk Down Wall Street is also a must read, even if you reject the efficient market hypothesis. Of course, there is a huge difference between trading and investing. These books are firmly about investing, not trading.
I'm not a trader, I do index funds. But, I'm a news hound, and I love reading economic an financial news, which is why I started http://Newsley.com.
I went out to NY last week and met with the guys from http://stocktwits.com. They're trying to revamp trading through social media. They have a really active twitter channel,and I follow a number of their twitter feeds.
They've also started streaming live video while the US market is open. They have a number of traders broadcast live while they are trading. It's a pretty cool concept. I wish them well.
Investments is a very broad approach that covers a lot of markets and basics and how things work. Very accessible to complete beginners.
The Hull is an introductory text and a great reference source to keep handy. You'll need to be slightly mathy to get it, but I suspect most HN readers will feel at home.
One of the best books I've read about investing is Vitaliy Katsenelson's Active Value Investing: Making Money in Range-Bound Markets.
Katsenelson argues that one should have a sell strategy in mind before purchasing a stock, instead of buying a stock and then holding forever, what he calls "buy and forget to sell".
His book is not about day trading, but he does advocate timing, what he calls pricing, a trade so that a stock purchase is made when it's a good value proposition and sold when it becomes more fully valued.
I hadn't heard the term Range-Bound markets before reading his book. He defines the term and uses it to help him make the argument that taking a more active approach to investing (i.e. buying and selling as opposed to buying and forgetting to sell) is a good strategy in bear markets and range-bound markets, and isn't a bad strategy in bull markets.
It's a very readable book. I'd suggest it to anyone.
Through a recent HN discussion, I discovered the finance course from Robert Shiller at Yale, and this is really only joy to look at this lecture. You get the whole semester in video: http://academicearth.org/lectures/finance-and-insurance
I read Investing for Dummies back in 2004. It taught me all the basics I needed to know -- mostly lingo, since I had no clue what all the TLAs meant.
I had just gotten my hands on a few thousand dollars that I knew would otherwise be wasted on an unnecessary purchase, so I signed up with Ameritrade (back in 2004 when it was much less user-friendly) and had to read the book before I felt confident enough to actually place an order.
The book advised me to buy what I knew, and to only buy something I planned on holding for a long time. Luckily I had just tried out a Powerbook for the first time and was blown away, so I bought a bunch of Apple stock.
The first thing to do is decide whether you really want to invest the time and effort into learning. Realise that the people you are playing against are professionals who do it all day every day. That's not to say you can't develop an edge and beat them, but don't assume you can walk in with no experience and set the world alight. Nobody here would expect a novice programmer to sit down and write the most awesome web app in a weekend - the same principle applies.
In this thread I've seen 'day trade', 'don't day trade', 'index funds' , 'don't do index funds'. Realise that all this advice is contrary, and only applicable to the specific people providing it. What matters is finding something compatible with your belief system, not twisting your mind to try and accept somebody else's belief system. Because when the pain and stress arrive, if you're not fully aligned with your strategy, then you're going to make the wrong choice.
Once you've decided you're going to put some effort in, then you need to work out a strategy that aligns with your personality. This needs to evaluate things like:
- your risk tolerance
- your expectations of returns
- your starting capital
- your analytical skills
Everyone is different, and the only people who succeed are ones who find an approach that works for their personality, and then take the time to get rid of their mistakes.
As for books, here's what I recommend:
- Intelligent Investor by Ben Graham - the take away in this book is the 'margin of safety' concept
- Trade your way to Financial Freedom by Dr Van Tharp - the take away in this book is that active management by position sizing and risk setting dictates more of your return than your actual strategy.
- Market Wizards, The New Market Wizards and the Stock Market Wizards, all by Jack Schwager. These books are all a series of interviews with top traders in commodities, currencies, funds, stocks and probably something I've forgotten. By understanding how an incredibly diverse set of traders have made astounding returns in the same markets should make you realise that there is no one approach that works, there are only approaches that work for specific people.
Good luck, and pray your first trade is a failure, not a success. Because you need to learn the pain of loss and how to minimise it before you taste the sweetness of profit.
I've recently started doing some investing (in both stocks and MF's) - in the Indian market. Over a 3 month period, I've had higher returns on my Growth MF's than on all the stocks I've bought.
I'm slowly starting to pull out of stocks and reinvesting that money into MF's - stocks take up too much time for it to be worth the effort.
start reading the financial news. the best way to learn about the stock market is to start paying attention to the financial news. there's a lot of data to be absorbed when you first start, but with time it'll become easy to read and understand the news articles and how they relate. also start paying attention to the major indexes, prices of commodities and currency. pay close attention to monetary policy set by the legislative body and find out how that may affect the general market or a specific market. pay close attention to the habits of the consumer - how she uses credit, her spending capacity, wages, etc.
just like most things in life, practice makes perfect. start practicing your trade/investment hunches. start with small wagers and increase them as you learn more and start to understand what works and what doesn't.
That would lead to much simpler answers, mine would be "you can't". Of all the picks you'll make, most won't be the most efficient, and many will go down. So if you can't accept losses - at least for a given amount of time -, just buy fix interests - no stocks.
. Big shot fund managers can't consistently beat the market, and they do this 40+ hours a week -- why should you do better?
. Stocks should be a long term investment; the market has always had a positive return over any 20 year period. Index fund and don't worry about it.
. You'll do a lot better applying energy to your start-up or whatever you're working on than dwelling on ticker prices.
. You're probably not playing with enough money to make it worth worrying about
Ramit Sethi's "I Will Teach You To Be Rich" book is a great overview of personal finance. He convinced me to automate my investments and not worry about following the market day to day.
(UPDATE: fixed formatting, thanks davidw)