Matt Levine's Bloomberg article is a good layman's explanation of the issues: <a href="http://www.bloombergview.com/articles/2014-10-16/high-speed-traders-put-a-bit-too-much-gravy-on-their-meat" rel="nofollow">http://www.bloombergview.com/articles/2014-10-16/high-speed-...</a><p>They were wrong and got punished, but the market would have punished them eventually anyway, and it sounds like it was already doing so. The SEC filing states that this scheme lost them $3mm on an index rebalance day when activity in the closing auction peaks. That should be a great opportunity for anyone intermediating between the continuous and auction books, so it is very surprising that they'd lose. Someone probably caught on that they were manipulating the close and waited for a big day to take advantage of them, or there was so much activity that they didn't have enough ammo to goose the price like on slower days.<p>Also, to be clear, there is nothing illegal about HFTs intermediating between the continuous and auction books or the majority of HFT activity. These guys were charged because they committed fraud, the use of a computer was ancillary.
You can safely ignore Newsweek's coverage. The meat is in the SEC action:<p><a href="http://www.sec.gov/litigation/admin/2014/34-73369.pdf" rel="nofollow">http://www.sec.gov/litigation/admin/2014/34-73369.pdf</a><p>Basically: Athena targeted stocks with closing time imbalances between buys and sells, where NASDAQ ran a special order routing process, and traded with itself to influence the price reported at market close.<p>The dollar amounts the SEC describes are insignificant (that's obviously not a defense for the firm charged with the behavior).
Being very familiar with this type of trading, I am very surprised that they were that stupid to trade in big size near the close.... I'm also surprised that this was a successful strategy on the Nasdaq... especially in 2009 as volatility was coming down quite a bit from the previous years.<p>What the SEC really should be investigating is the rampant use (or probably misuse) of d-quotes on the NYSE. These effectively allow you to put on-close orders after the on-close cutoff time of 1545. These orders get routed to specialists and god knows what theyre doing behind the scenes.... I havent run the numbers but I would wager that last-15 minute volatility in NYSE names is way higher than on NASDAQ. Get rid of the d-quotes and get rid of the specialists....
Stupid question about this line on p.11:<p>> Respondent Athena cease and desist from committing or causing any violations and
any future violations of Section 10(b) of the Exchange Act and Rule 10b-5 thereunder<p>Why does the SEC order a firm to desist from committing violations of some rule? Aren't firms supposed to be not violating them anyway, regardless of whether they are specifically ordered by the SEC not to?
I understand that the SEC is also asking Athena to cease and desist, but did Athena's scheme actually make them money? If so, a $1M civil penalty doesn't seem like much of a deterrent for those thinking to do the same thing.