Common, really ... after this long bull market!? So how exactly the big boys make money with billions under management? Scalping?
The biggest firms issue ETFs for the public to do the "trendfollowing", the rest is relative value. Fixed income arb, merger arb, basis trading, cash&carry, long/short aka. pairs trading, stat arb, correlation and dispersion trading and what not.
The "big guys with billions" or how you call them are pension funds and other whales that are heavily restricted in what they can actually do. In the end they can buy stocks, bonds or stay in cash. But these guys arent actually generating alpha, they are just fee hovers so they don't count.
The guys who are betting on big moves are the global macro dudes and they trade with information edge.
I don't think there is any CTA left who just buys new 20d highs and rides it like the turtles did. Autocorrelation is mostly gone.