spy vs qqq monthly return since 2010

Among QQQ and SPY, SPY had the best month since 2010 in October 2011, returning 11.6%.

ASSETMONTH% RETURN
QQQ
January 2010
-7.62%
SPY
January 2010
-4.43%
SPY
February 2010
2.39%
QQQ
February 2010
4.31%
SPY
March 2010
5.65%
QQQ
March 2010
7.26%
SPY
April 2010
0.86%
QQQ
April 2010
1.86%
SPY
May 2010
-8.39%
QQQ
May 2010
-7.75%
QQQ
June 2010
-5.85%
SPY
June 2010
-4.28%
SPY
July 2010
6.9%
QQQ
July 2010
6.98%
QQQ
August 2010
-6.3%
SPY
August 2010
-5.96%
SPY
September 2010
7.51%
QQQ
September 2010
11.53%
SPY
October 2010
3.04%
QQQ
October 2010
5.5%
QQQ
November 2010
-0.56%
SPY
November 2010
-0.49%
QQQ
December 2010
3.21%
SPY
December 2010
5.17%
SPY
January 2011
1.55%