Quote from black diamond:
I know overshoots are part of the market. I was saying I don't think your argument that more HFT get prices closer to a step function is always correct - maybe this can magnify the overshoots instead of getting prices to the next step faster.
Sure, but I don't pretend that prices will somehow fall exactly where they should, if such a thing even exists. My point is that price is like a woman. To you, she may be beautiful and you want to marry her, and to me she may be a one night stand or vice versa. Who is to say that on your time frame for trading/investing that the price you paid is an overshoot?
I firmly believe there is price-insenstitve trading by funds. For example, when funds have big outflows they are price takers - you can find lots of statistical and anecdotal evidence of this if you care to look.
Oh no question about it. I didn't say they don't exist. I claim in this environment, they are in real danger of going the way of the Woolly mammoth if putting money to work at any price is the prime directive. In a market like we saw from 2003 - 2008, sure, but we may have entered a period where squeezing pennies count.
VWAP strategies do not save you when you need to move a large part of the daily volume in a hurry. I also have personal experience with a firm that analyzed the pricing of their target assets to death, but were totally price insensitive to their hedging instruments even though they were a big part of that market.
Right, that is why pits like the SPX options pit is so desirable if you know what you are doing. The thing is, this is done all the time and not just by mutual funds, but by traders. For example, I know a trader that makes most of his money taking paper down. He then negative quotes for edge to take the edge he got on the paper. So if he got say .15 of edge on 10000 straddles from an institution, he may be willing to quote and get picked off by Goldman Sachs for .02. Now, GS will do a study and say, some traders are insensitive to price, when in fact he was locking in a profit for .13.
Maybe not the best way to operate but the point is that behavior exists and didn't put them out of business.
It is all about timing and timeframe, and to generalize beyond that is potentially to come to the wrong conclusion.
I don't see where your example of staying still while getting run over is relevant. Of course liquidity gets scared out of the book when a big traders intentions are clear, the question is how this changes when HFTs are active.
Well, because HF programs job is to simultaneously play statistics against pockets of liquidity. Also, I don't see how HF can affect the price for a fund anyway. Shares bought must be sold, so if a program buys in front of a fund causing a temporary spike, those shares are sold back bringing back the price almost inline where it was before, or at least now the fund is buying the bid instead of the offer. And if the fund is gone, that very same HF program is now probably selling a fraction more than it buys, bringing the prices back to a cheaper level for the next fund. In fact, if I were a fund I would be more worried about the myriad of other ways that people front run these orders than some dumb program that is in it for .06 for 1 minute.
I think it happens earlier when the big trader is being front run, and the front runner gets to pick off the stragglers that the big trader would otherwise get. IOW, how much worse will you do on your 5000 strangles when HFTs snifff you out and get ahead?
My friend, this is war and it happens all the time. We are option MMs and traders. People are always probing us with paper to see where we stand and whether we are buying vola or selling it. Brokers come to us with "shows" all the time from institutions. If we think the guy is just probing us (on behalf of a hedge fund), we eventually stop doing business with him. On the other side of the coin, funds that need to shop an size order will shop it upstairs first. Options market makers often adjust their vol curve based on the order, even if nothing executes! [depends on the source obviously, otherwise you could manipulate the vol curve just by pretending to have an order. Since we have eyes everywhere, we can tell if the order eventually filled or it was bogus]
Finally I do not stay awake at night worrying about mutual funds getting worse prices and I think legal front runners are entitled to what they can get, but an earlier post brought up social welfare. When policymakers think about social implications of market design they are concerned with the "initial buyer", not liquidity for HFTs! If the perception that HFTs are hurting initial buyers instead of improving liquidity and price discovery gets too strong then rules like a transaction tax are more likely.
Social implications of investing? LMAO. Seriously, people that think that markets have a social role should have their heads examined. If you want a safe and reasonable rate of return, put your money in bonds, and probably US treasuries at that. If you leave that safe heaven, you are gambling unless you are an arbitrageur. It may be reasoned gambling like playing Blackjack, but gambling nonetheless. If you make the rules such that there is no profit motif
for people you will kill your own liquidity and the only liquidity left will be exactly that which you claim is bad because they front run orders, i.e., machines that don't need salaries and bonuses and don't mind picking up pennies with a bulldozer.
Rules are continuously evolving, and some of the rules are good and some are downright idiotic. This discussion is now heading into the realm of political philosophy, and I don't want to go there. This is almost akin to saying, was FDRs "New Deal" better or worse for America? I would spend a month non stop on that question, and I still don't know the answer.
Based on some of your earlier posts I got the impression it would be interesting to exchange ideas about this. But it sounds like you are more into winning the point so I guess I'll agree to disagree.