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No. of Recommendations: 7
Ra, if you're looking for some screens that have stood up "post-discovery" especially in recent years through market changes, review a couple of my WWL posts from a few years back. TL;DR version: about 20% of the screens, most of them from SIPro at this point, have been consistently "worth" using over time for performance. The 20 year old Elan SOS' aren't part of that subset.

This is not to say that screens don't hold up well and shouldn't be used; this is just to point you to the @10-20% of screens that have consistently been worth using through a variety of market conditions. Also look back to January '19 posts on "post-discovery".

https://boards.fool.com/wwl-fun-with-flat-markets-31858099.a...

This provided a checkpoint on how some "benchmark" screens were doing as well as backtesting a WWL approach. Of course, now a couple of years ago Bill2M retired from providing the weekly returns because of an upgrade-related technical issue.
https://boards.fool.com/wwl-not-torpedoed-mech-screen-select...

this was a "best screens of 2009-2014" lookback:
https://boards.fool.com/best-screens-of-the-last-5-years-314...

March '15 look in
https://boards.fool.com/fun-with-the-weekly-trade-ledgers-44...

April '15 revisiting, highlighting how volatile some screen results can be
https://boards.fool.com/fun-with-weekly-trade-ledgers-april-...

Sept '15 update - repeat on volatility...
https://boards.fool.com/q3-hall-of-fame-shame-31930275.aspx

Food for thought on market changes - from Ben Carlson
https://boards.fool.com/food-for-thought-on-the-screensmarke...
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