Ask HN: Stock backtesting tools are broken. Anyone thought of fixing it?3 points·by zhangela·13 anni fa·3 comments2 commentsPost comment[–]AllenSH·13 anni fareplyHave you taken a look at https://www.quantopian.com/ ?[–]zhangela·13 anni fareplyI didn't know about it. Thanks for sharing![–]mitaz·13 anni fareplySeconded. I also haven't been able to find an easy to use backtester.