S&P 500 ETFs Survive Tests of 200-Day Average

Euro ETFs strengthened Monday along with U.S. stocks before the vote in Greece later in the week on austerity measures. [Euro ETFs Rise]

For more information on trend following, visit our trend following category.

SPDR S&P 500 ETF (NYSEArca: SPY)

PowerShares QQQ (NasdaqGM: QQQ)

Max Chen contributed to this article.