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August 25, 2011 Author: Tyler Durden Taken from: Zerohedge.com - HFT Quote Stuffing Market Manipulation Caught In The Act Now that we can directly monitor the amount of quote stuffing in the NYSE courtesy of Nanex (an ability that the SEC apparently never will have), we know that every time there is a massive spike in hollow trade (as in without intentions to cross bids or asks, something everyone but the SEC and the HFT lobby believes should be a felony offense), the market is programmed to either rip of plunge. Sure enough, at just after 3:19 pm we saw an epic spike in empty packets on the NYSE, which set off red flags and immediately prompted us to observe the move in ES, which naturally confirmed that an HFT driven coordinated buy order (no block) was going through and pushing the ES well on its way to VWAP. Market manipulation no longer needs anything more than a coordinated packet stuffing dump, as what happened on May 19. Keep in mind: these work on both the upside and the downside- the reason why suddenly everyone hates HFT after loving it for over 2 years, is that while it provides volumeless levitation, it just as easily can serve as quicksand in a downmarket. That, however, does not make it right, and just as two years ago, when we first brought attention to the matter, so today, we claim that HFT should be abolished immediately by the imposition of a minimum active quote latency. That would eliminate all quote stuffing and HFT market manipulation in a millisecond. Taken from: Zerohedge.com - Dear HFT, Please Explain This On August 25, 2011 at 15:45:48, in a one second period of time, there were more than 10,000 quotes and exactly zero trades in DELL. Close inspection of these quotes reveals something very disturbing. This cannot be dismissed as a computer problem or glitch. This can't be explained as stupidity or some oversight. It is not pinging for hidden liquidity. And it's certainly not price discovery. As far as we can tell, it's not adding liquidity or narrowing the bid/ask spread. What caused this blast of 10,000 quotes in DELL appears deliberate. Of the 10,000 quotes, the bid and ask prices remain the same. The bid size also remains constant except for one change after the first 7,000 or so quotes. The only real variation is the ask size. Not a simple 2 step variation, but one that repeats in a mathematical pattern with a long cycle. This makes it difficult to detect, but it also confirms that it must be emanating from a single source. There are approximately 4,000 stocks that quote during active trading. Which means 40 million quotes/second if just one of the 9 exchanges allow this nonsense to spread to all 4,000 symbols. You would need 40 gigabits per second of bandwidth to receive data at that rate. Unfortunately, we think it's just a matter of time, because events like this one in Dell are no longer isolated or rare. And it doesn't look like there are any grown-ups in charge. |