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Comparing the LIBOR spread isn't enough to compare senior subprime tranches to senior prime tranches. Among other things, the attachment point matters a very a great deal.

The attachment point is the % of cumulative losses after which a given tranche starts suffering losses of principal. So for example:

L+20 with a 20% attachment point against historical max losses in the asset class over all credit cycles of 1% is a lot better on a risk adjusted basis than L+200 with a 40% attachment point against historical max loss experience of 15%.

Without talking about historical loss experience we can't really guesstimate the margin of safety here nor say that a given tranche is or isn't good value.

Another possibly interesting nitpick: LIBOR isn't risk-free. It's an interbank rate so it is the short-term yields paid by highly rated financial institutions. Risk free means backed by an entity that can print money, like the Fed. That's why the LIBOR-Fed Funds basis exists.

Also, re: "I think it's interesting how high interest rate risky loans can be considered as sleazy while giving opportunities to the less fortunate is considered an admirable goal." check out the book _Scarcity_ by Mullanaithan and Shafir, which has a super interesting take on this question!


Completely agree with everything you said. I was only calling libor risk-free as it is what would be substituted for the risk free rate used in finance textbooks. Technically it's not risk-free but serves as a base return to benchmark off of. Also, most of these bonds pay coupons linked to libor.

Attachment and detachment point are definitely very important. I found a random fed document from 2012 that suggests similar attachment/detachment points for AAA prime vs subprime abs securities (~79% attachment). I haven't looked at it too closely though and I could be missing something. I know spreads are a lot tighter since 2012 and credit quality of underlying loans may have worsened with lower standards. On the other hand, people are a lot better off now that in 2012 (i.e. stock market, housing market, etc).

Will check out Scarcity. Thanks for the recommendation!

[1] http://www.federalreserve.gov/SECRS/2012/May/20120523/R-1401...


Current state of economic thinking: technically not risk-free, but we'll call it that anyway...what could go wrong!?


Well, if you're talking about LIBOR, the risk is that the AA bank to whom you have counterparty risk will default within 3mo, so it's very, very, very low risk.


Both. And low portfolio concentration.


I remember back in the day /dev/audio had bad default permissions on, I think, SunOS, and you could just cat it to a file to record.


Or to do a streaming parse with json.Decoder.


OT, but, I have a 2001 (996) 911 which I bought used for ~$20k in 2009. It's been hassle-free since then and the largest expense has been tires.


Lawyer up. It's worth the $10k it will probably take you to paper this correctly. Since it will be difficult to estimate damages should this not work out, consider writing a liquidated damages clause with clearly spelled out triggers.


John Ratey wrote several good books on ADD/ADHD as well as this one: _Spark: The Revolutionary New Science of Exercise and the Brain_ http://www.amazon.com/Spark-Revolutionary-Science-Exercise-B... - it is pretty good.


Tips for the prospective founding CTO working from a clean slate with a non-technical cofounder:

* Get it in writing, and sooner rather than later.

* Do not work for free. A business cofounder should be in charge of finding money. If they can't get enough to pay you to build a PoC, you shouldn't work with them.

* Work together to set near-term goals for the non-technical party, and assess whether they can deliver. If they can't: beware.

* Do not accept less than a 50/50 split unless the other party has decades of experience in a vertical, glowing references, and an astounding Rolodex. A few years at McKinsey or Bain followed by an MBA isn't worth more than the work you put in to get here. (Although it is meaningful.)

* Check references on the other person and do background work. It's amazing how little folks put into this compared with, say, the amount they put into their first hire. This is a source of much pain.

* Qualitatively, you MUST feel a sense of respect for the other person, and it helps if you find them outright impressive. Again, a source of major pain.


We use Duo at work and it is awesome. Bravo.


Effectively they issue a bond bundled with a bunch of options that may be exercised in exchange for giving up ownership of the bond, "converting" it to equity.

This isn't necessarily driven by a view on the equity valuation. It's more often driven by high realized volatility in the equity, which increases the value of the equity optionality. Correspondingly this decreases the value of the fixed income aspect of the bond, which from the issuer's (Twitter) perspective means they pay less in interest.

Note that "Twitter expects to enter into privately negotiated convertible note hedge transactions". This means that they will buy call spreads to help manage the EPS impact of increasing the fully-diluted share count. Realized volatility and the pricing across strikes of the option chain will be affected.


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