Potential investors should be aware that this tilt could make the fund more susceptible to market downturns, as witnessed in the recent sell-off in growth stocks, but the ETF could also make significant gains in a rallying market.

In contrast, XLK and IYW lean toward large, established tech names. While the tilt toward large-cap names, like Microsoft (NasdaqGS: MSFT) and Apple (NasdaqGS: AAPL), help keep these ETFs stable during down markets, the investments are also slower to move during market rallies. XLK allocations include mega-cap 70.7%, large-cap 18.9% and mid-cap 10.4%. IYW weights mega-cap at 63.9%, large-cap 18.4% and mid-cap 13.9%.

PowerShares DWA Technology Momentum Portfolio

For more information on the tech sector, visit our technology category.