AMEX:SPY   SPDR S&P 500 ETF TRUST
By chance, i found there is a built in indicator of "Moon Phases" in tradingview.

interestingly, full moon corresponds with a lot of bottoms in the spy, and new moon - tops.

of course this is not a 100% indicator, but if you use this together with support/resistance levels, moving averages and repeating key dates, you should do quite well.


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