zeev, what do you make of this, if anything? i calculated a composite trin of the QQQ, SPY and DIA for 9/21/01, 7/24/02, 8/5/02 and 9/20/02 using only block trades of 5000 or more shares. the respective results are as follows: 116.2; 92.2; 112.2 and 97.7 on friday.