Offer your thoughts or opinion on the input financial query or topic using your financial background.

Does high frequency trading provide economic value? 
This is a very important question and you will find arguments from both sides, in part because it is still understudied. Ben Golub, Economics Ph.D., from Stanford answers "Is high-frequency trading good for the economy?" on Quoram quite well.  This is an important but understudied question. There are few   published academic studies on it, though several groups are working on   the subject. You may be interested in the following papers: http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1569067 http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1361184 These document some of the phenomena that arise in high frequency   trading, from a theoretical and an empirical perspective. However, a   full equilibrium analysis of the unique features of high frequency   trading is still missing, and until it is done, all our answers will   be kind of  tentative. Nevertheless, there are some obvious things one can say. Currently,   high frequency traders are competing to locate physically closer and   closer to exchanges, because milliseconds matter. Thus, large amounts   of money are being spent to beat other market makers by tiny fractions   of a second. Once many firms make these investments, the market looks   like it did before in terms of competition and prices, but is a tiny   bit faster. This investment is unlikely to be socially efficient: that   is, the users of  the market don't actually benefit from the fact that   their trades are executed half a millisecond faster -- certainly not   enough to cover all the investment that went into making that happen. Some people who study the issue believe that high frequency trading   (HFT) actually exacerbates market volatility; some plots to this   effect are found in the second paper linked above. There is certainly   no widely accepted theory that says faster trading technology   necessarily increases efficiency, and it is easy to think of   algorithms that can make money (at least in the short run) but hurt   most other investors, as well as the informational value of the   market. One caution is that some of the complaining about HFT comes from those   who lose when HFT gets better -- old-style market makers. They   certainly have an incentive to make HFT out to be very bad. So some   complaints about the predatory nature of HFT should be taken with a   grain of salt. There is no strong economic consensus about the value   of this activity. For what it's worth, my personal impression is that   this is more bad than good. I'll post an update here as more   definitive research comes out. You can also find a debate on High-frequency trading from the Economist which gives both sides of the argument. In conclusion: Regardless of how you feel about HFT it seems like it's here to stay and won't be leaving in the foreseeable future. So the debate will rage on... Additional resource you may finding interesting: Europe Begins Push To Ban HFT High Frequency Trading Discussion On CNBC Should High Frequency Trading (HFT) be banned ?