No. of Recommendations: 6
Many years ago there was a discussion about too many screens. But it was decided to keep them all to insure against survivorship bias. All of these screens when invented (discovered?) had great back-tested returns. But as we all know, post-discovery returns were subpar. This same effect occurs with mutual funds.
As for me, I use about 15 of the screens. But I don't follow them mechanically - I pick and choose, with a lot of emphasis on high rel strength stocks that also show up on IBD, Zacks, and SI Pro screens. I have had decent results (but never much better than the SP500). My stock picking is OK. The problem is I get too emotional at the wrong times, which negatively affects my decisions regarding holding and selling my stocks.