The new world is now a war between machines. For some perspective, in 1999 at the height of the tech craze, there were about 1,000 quotes per second crossing the tape. Fast forward to 2013 and that number has risen exponentially to 2,000,000 per second. And yet there are fewer market participants today and actually less trading. All this noise comes from the High Frequency guys trying to game each other or fool traders. Today, 90 to 95 percent of all quotes emanate from High Frequency machines…… This doesn’t imply share volumes just quotes traveling on the tape. Eric Hunsador - Nanex
A top government economist found that HFT firms are taking significant profits from what they call traditional investors, or those who are not using computer algorithms.
There are mostly good HFTs that provide counter party risk, than their & the predatory tick/penny jumpers that spoof/layer, quote stuff, & herd with no real skin in the game, these are the ones that need to be stomped out.
Nothing alleged about it as the author claims. The SEC & CFTC have concluded the flash crash was significantly amplified by HFTs. The author says the public should have stepped in to buy stocks at 1 cents, that's a hoot since most brokers halted trading when the stub quotes were far away from the NBO.
Exchanges have a cozy relation with the predatory front running HFTs, they make a lot of profits from this. Despite being caught giving HFTs hide & slide orders and faster data feeds they have shown no real effort to reel it in. Check the Cattleman's letter to the CME.
http://m.futuresmag.com/2016/01/25/cattlemen-say-markets-are-broken-there-fix
The HFT era has made mini flash crashes routine - from the most liquid futures to equities. Japan, France, to name a few impose fines for high rates of cancelled orders - we aren't we?
Is trading cheaper today? In 1990 the avg trade size was 1,600 shares, now it's only 200. To not get clobbered by HFTs most informed traders slice their orders into smaller 100-200 shares - that raises the commissions 8 fold as compared to the avg 1990 order, you also get poor limit order markups now.
Nearly all of the profitable intra-day traders pre HFT had to adapt by lowering their trading frequency & increase their holding times.
When the Fed/central banks are no longer propping up the market what will happen with price discovery when the liquidity takes a dive? Something as small as a Trump Tweet can trigger a mini flash crash now, hate to see how ugly it could get in a bear market?