I view RSP demand [as supporting the idea] that investors believe the mega-caps that drove the market for much of the year will continue to give way to other large-caps. Mega-Cap Performance Fading But there's also demand for the Invesco S&P 500 Equal Weight ETF (RSP). It's a sentiment market, and if the words from Washington are "hike" and "inflation," then people may cut back unexpectedly -- from labor issues to consumer spending.