I have noticed something I did not see last yr QQQ + SPY and even sometimes DIA arbitrage closely pegged to the overnight stock index futures starting at 5 am ( or maybe 6 am) I did not see this start so early last yr ? someone must think they can make money doing it although it provides liquidity .... it prevents me from doing my own arb with wider spreads
Even the big boys are fighting for the scraps. We used to be able to pick up dollars blowing around in the streets now we are all fighting over the occasional nickel or dime. Today was terrible