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Re:Introduction to Zipline: A Trading Library for Python by winter_blue on Monday July 25, 2016 @03:50PM (#12161100)
> You can't afford retail brokerage costs when you're in a highly crowded and competitive trade.

This is very important. Most brokerage charge around $7 per trade, which makes high-volume trading very very expensive and prohibitive.

Robin Hood is an amazing alternative that charges nada for trades, and once they have an API[1], I think they'd be a great choice for small-time developers looking to do some (low-frequency) algorithmic trading.

[1] https://support.robinhood.com/hc/en-us/articles/210216823-Ro...

Re:Introduction to Zipline: A Trading Library for Python by flatM on Monday July 25, 2016 @04:05PM (#12161221)
If you're serious into retail algotrading, IB (Interactive Brokers) is the best broker you can get.