3 ms·Ask HN: Stock backtesting tools are broken. Anyone thought of fixing it?3 points by zhangela 14y agomitaz 14y agoSeconded. I also haven't been able to find an easy to use backtester.AllenSH 14y agoHave you taken a look at https://www.quantopian.com/ https://www.quantopian.com/ ?zhangela 14y agoI didn't know about it. Thanks for sharing!