“As with our existing PowerShares DWA Momentum ETF lineup, these portfolios will be based on momentum strategies as measured by Dorsey Wright’s definition of relative strength characteristics, which can be a powerful tool for stock selection,” said Lorraine Wang, Invesco PowerShares global head of ETF products and research, in a statement. “The momentum indexes were developed by Dorsey Wright who we believe remains a leader in relative strength investing.”

Illinois-based PowerShares will shutter the PowerShares KBW International Financial Portfolio (NYSEArca: KBWX), PowerShares MENA Frontier Countries Portfolio (NasdaqGS: PMNA), PowerShares Dynamic MagniQuant Portfolio (NYSEArca: PIQ) and the PowerShares Lux Nanotech Portfolio (NYSEArca: PXN).

The final day of trading of trading for those ETFs, which together represent less than 1% of Invesco PowerShares’ total assets, will be Feb. 18.

PowerShares had $97 billion in ETF assets at the end of the third quarter.