看看今天几个ETF的PUT-CALL ratio, 就知道为啥IWM涨，SPY/QQQ跌了

Symbol	Name	Option Volume	Call Volume	Put Volume	Volume Put-Call Ratio	Avg Daily Volume %
SPY	SPDR S&P 500 ETF Trust	6,780,892	3,644,691	3,136,201	0.86	66.24%
QQQ	Invesco QQQ Trust Series 1	3,680,944	1,925,466	1,755,478	0.91	64.54%
IWM	iShares Russell 2000 ETF	1,661,330	609,079	1,052,251	1.73	88.78%