What's So Special About the Invesco S&P 500 Equal Weight ETF?

It's in the name -- equal weight -- but investors don't usually recognize just how powerful that subtle change can be.There's a "strange" thing going on in the broader market today, with a small number of large stocks (particularly Nvidia) largely driving market returns. That's left the Invesco S&P 500 Equal Weight ETF (RSP -1.07%) trailing the market cap weighted SPDR S&P 500 ETF (SPY -1.68%). That's not an indictment of the Invesco S&P 500 Equal Weight ETF, however. It's an indication of just how importan ...