In options maybe, not in equities. Bank of America doesn't, Vanguard doesn't, none of the firms I've worked at do. Bernie Madoff basically invented the "strategy" and most firms aren't exactly looking to emulate him.
The FSA (U.K. equivalent to the SEC) effectively banned the practice a few years ago (2010 maybe?) which curtailed the practice a lot. I'm not sure about other states but the Massachusetts AG's office started looking into it last year, too. Its essentially a kickback paid in exchange for information that allows the "smart money" institutional investors to front-run the "dumb money" retail investors.
This comment couldn't be further from the truth. You sound like you've read flash boys without reading the rebuttal that shows how it is entirely wrong.
The FSA (U.K. equivalent to the SEC) effectively banned the practice a few years ago (2010 maybe?) which curtailed the practice a lot. I'm not sure about other states but the Massachusetts AG's office started looking into it last year, too. Its essentially a kickback paid in exchange for information that allows the "smart money" institutional investors to front-run the "dumb money" retail investors.