If humans are in the market and market liquidity comes and goes faster then humans can react , than market liquidity is a mirage. so i say today with HFT market liquidity does not exist. that is why FLASH CRASHES occur and will continue to occur .
Quote from bone:
If you hit a bid or lift an offer you will get them.
Quote from Clubber Lang:
Total bullshit.
NASDAQ allows bids/offers to be pulled before being executed AT THE SAME PRICE LEVEL.
Example of a trade in DELL-
NASDAQ bid shows 50,000 cumulative shares at the inside market broken down into 5 separate orders-
100
900
1000
1000
47000
I want out of my 50k lot so I hit the bid for all 50k. I will get executed on the first order for 100 and most likely the second order for 900, but all the other bids ARE ALLOWED TO BE PULLED WITHOUT BEING EXECUTED.
How does this happen? Simple, NASDAQ executes the order internally and anyone with access (paying for their service) can see the prints first and their computers can pull without being executed.
So what happens to the rest of my order? Well I'm still stuck with 49,000 shares and the bids are now .01 or .02 cents lower and I get filled there. Upon which the NBBO immediately lifts back up .01-.02 cents as if my trade never happened.
HFT box makes a quick $500-$1000 plus the ECN rebate, while I sit there wondering how in the world the SEC lets this shit happen.
Rinse and repeat thousands of times a day.
HFT has destroyed Wall st. Why do you think volume is collapsing with every passing month? The public may not know the intricacies, but they are well aware that the game is rigged.
