Quote from Don Bright:
Please do me a favor, and give me TOS from your message (order and fill) window, and a screenshot of the NYOB/L2...I will discuss this with the floor governor/GS executive....I've been watching all day, and have never seen more than 1 penny difference between the NYSE and any other liquidity pool.
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In addition, I sent out 48 emails to my traders who trade more than 50,000 shares of SPY (on average) daily, and asked fro their opinion of how well they have their orders executed...10 responses only so far...all say it's not even a concern, because of the liquidity.....I'll let you know of any of my guys express the same concerns.
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(Let me know about those screen shots...we have until next Thursday)...
Thanks,
Don
(PS: I realize that our orders are routed differently, without the broker being involved, but there shouldn't be all that much difference)
Don,
I don't have the data and screenshots you requested, because my NYSE SPY trades occurred well over a year ago. I also never bothered with NYSE open book. The S&P futures and ECNs are more important than NYSE open book, for somebody trading SPY.
Your comment about your watching SPY, and not seeing more than a penny difference between it and other liquidity pools, shows that you are not comprehending the problem. You cannot see what is happening by what you are watching. You must actually trade in order to see it.
If the market is moving against your SPY order, of course you will be filled promptly. If the market is moving favorably to your SPY order, then your order execution will frequently be delayed for a very long time, while the market runs away from your order, and then you will finally be executed at the much worse market price existing after this lengthy delay. If you simply exclude NYSE and AMEX from your SPY trading, then you will, on average, get much better prices, and will always get immediate execution.
You made the wrong comparison. You compared the NYSE price to the other prices quoted at a particular point in time. This is not valid. You need to compare the ECN prices instantly available at the time your order arrives at NYSE, to the execution price actually received at the much later when time NYSE finally gets around to executing your order. This is the crucial difference you are overlooking.
Another problem, in addition to the delay, is that NYSE will often take full advantage of the SEC's
de minimis SPY exception to the trade-thru rule, with the result that you will suffer an additional 3 cent hose job, because you will trade-thru the NBBO - after the NBBO has already run away from you. And then yet another hose job is that sometimes, NYSE will go beyond the legal 3-cent limit, even though that does violate the trade-thru rule.
Thank you for soliciting opinions from your traders, but I'm not sure you did this in a way relevant to the problem. The problem I am describing involves orders which take liquidity. I suspect that your traders are offering liquidity, not taking it, so that their experience has little or no relevance. Can you clarify this question? If you do have traders taking liquidity, do they simply assume they are getting good executions, or do they carefully check the difference between the prices they could get immediately on ECNs, versus the delayed execution prices they actually get when executed on NYSE?