Tyler Durden on zerohedge: Tobin Tax Opponents Are Ignoring The Real HFT-Induced Trading Toll; Why VWAP Is A Gold-Mine, But Not For You
With the debate over Tobin tax increasingly appearing on the front pages of the mainstream media, we thought we would revisit a theme discussed previously on Zero Hedge, namely the issue of whether or not the predominant trading paradigm, i.e., High Frequency Trading, offsets trading costs as proponents of this trading strategy claim. We had previously proposed some broad estimates in quantifying the cost of HFT [1]: our results received the stern condemnation of those whose livelihood is dependent on microsecond speculative scalping of pennies on the dollar, thousands if not millions of times a day, under the guise of "liquidity provisioning." It is precisely these people who are most opposed to a trading tax as it will make most HFT-based strategies prohibitively expensive. And while a final proposed version of what a tax might look like is still to be determined, it is only reasonable to expect that it is most punitive to those that do the opposite of allocating capital on a long-term basis, and thus most detrimental to those parties who merely churn stocks under the "noble" pretense of providing liquidity. Of course, that this liquidity is provided in the most liquid of names as is (and of course those above the $1 rebate-collection threshold [2]), is often ignored.
Furthermore, we have historically been very critical of VWAP algorithms, [3]pitched by the likes of Goldman Sachs in their REDI trading platform as the core trading strategy involving non-dark liquidity and trades in open exchanges (of course for those who prefer to be exposed to Goldman's much more principally lucrative proprietary bid/ask in a dark pool venue, Goldman has Sigma X for that).
A recent research report by Quantitative Services Group presents one of the first empirical studies confirming our hypothesis that in its most frequent incarnation, VWAP algorithms, HFT not only does not reduce trading costs, but in fact augments these
http://www.zerohedge.com/print/33616
It is long and there are a lot of graphs; note carefully that he envisages the possibility of a <i>variant that does not impact day trading enthusiasts</i>.