There are many tools used by traders....

Most wont talk about them,and for a few reasons.

One, every trader who looks for the best indicators and hopes they found one doesn't want anyone else to use it. It is like hunting for the fountain of youth or a gold mine. The hunters don't want a crowd watching.

The Second reason is Technical tools are considered more voodoo then science, in most firms.They don't understand the deference between the math that are used . And so. Math that help build the "pyramids" known as fibonacci sequence , transformed from algebra to geometry by W.D.Gann is shunned. Or his contemporary R.N.Eilliott who broke market patterns into algebraic subsets and truths, are not talked about in the same respect as "price earnings.

So Funds that run money, be it mutual or hedge may be using technical tools.
I have seen them do it.

But they wont come out and say so. Instead they claim to use( fundamental`s ) price verse earnings , sales, or future growth .

As if that has been a better tool over the years , ask WorldCom or Enron stock holders.