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Example of prefilling data when using fetcher to warm up algo

One of the points in Alisa good post: https://www.quantopian.com/posts/tips-for-writing-robust-algorithms-for-the-hedge-fund

a difficult is point 8 when using Fetcher. I think I have the easiest solution for this but @simon has a nice one as well, although I think his solution is too hard. Anyway, now you have an alternative of warming up fetcher data.

Have fun, be good

PB

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Backtest from to with initial capital
Total Returns
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Alpha
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Beta
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Sharpe
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Sortino
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Max Drawdown
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Benchmark Returns
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Volatility
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Returns 1 Month 3 Month 6 Month 12 Month
Alpha 1 Month 3 Month 6 Month 12 Month
Beta 1 Month 3 Month 6 Month 12 Month
Sharpe 1 Month 3 Month 6 Month 12 Month
Sortino 1 Month 3 Month 6 Month 12 Month
Volatility 1 Month 3 Month 6 Month 12 Month
Max Drawdown 1 Month 3 Month 6 Month 12 Month
# Backtest ID: 55acf35b435a4c0c63d75d65
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