Hi, thx for your responses. I'm looking for a library of proven and tested algos that worked in the past. They do not necessarily need to be implemented in Quantopian. Something like, the best in 2013,14,15... I know that magazines and forums exchange trading strategies, and that there are general categories for trading algos. I'm not sure if there is any good source/library for such algos, so far I haven't found any. I believe it would be best to check out what worked in the past, and then analyze what has changed in most recent time, using a combination of different categories of algos, markets etc. after retesting and modifying them. There is no need to re-invent the wheel....