This year’s momentum sell-off is, mostly, in investors’ rearview mirrors. You know, the one caused by sharp retrenchments in biotechnology, Internet and social media stocks.

The one that sent beloved exchange traded funds such as the Global X Social Media Index ETF (NasdaqGM: SOCL) and the iShares Nasdaq Biotechnology ETF (NasdaqGM: IBB) to ominous flirtations with bear markets. [Momentum Lost in April]

Imagine how bad things were during the March/April momentum sell-off for ETFs that actually have the word “momentum” in their titles. The Powershares DWA Momentum Portfolio (NYSEArca: PDP) endured that nightmare, tumbling almost 8% from its March peak to its April trough. That decline was not bad compared to biotech, Internet and social media ETFs, but because PDP is framed as a momentum fund, it was cast in the same negative light even though the ETF holds no Internet or social media stocks and has only scant biotech exposure.

Too often those that are willing to highlight an ETF’s fall from grace are also reluctant to acknowledge that fund’s resurgence. Too bad because they are missing out on the fact that the $1.27 billion PDP is one of 30 ETFs (at this writing) to have touched a new all-time high Tuesday.

Some say the momentum factor as it pertains to ETFs is cooling.

PDP did not get the memo. With Tuesday’s modest gain, PDP is up 6.3% over the past 90 days while the S&P 500 is higher by about 5% over the same period. [Overlooked Alternative Index ETFs]

As is the case with some other momentum ETFs, PDP reminds investors, and it is a critical reminder at that, that there is a big difference between dangerously inflated momentum as it pertains to high-flying stocks from the Internet and social media realms and steady, but still impressive price action. [Marrying Momentum With This ETF]