<story><title>Show HN: Zipline - algorithmic trading in open source Python</title><url>https://github.com/quantopian/zipline</url></story><parent_chain></parent_chain><comment><author>anonDataUser</author><text>I work at an algorithmic trading shop and have spent a fair amount of time studying equity market structure.  It&apos;s great to see an open source trading platform, but I think it&apos;s important to stress the following: Equity markets are highly competitive.  If you choose to use this platform for trading, you will lose money on average.  As a retail trader, you face numerous disadvantages that many market participants do not face.  By increasing your trading frequency, you will increase your costs and decrease the likelihood that you will make money.  Good luck!</text></comment>
<story><title>Show HN: Zipline - algorithmic trading in open source Python</title><url>https://github.com/quantopian/zipline</url></story><parent_chain></parent_chain><comment><author>xntrk</author><text>The topic of this post seems a little off. The description of zipline on its github page is &quot;financial backtester for trading algorithms written in Python&quot; which is a bit different.</text></comment>