us500, -5.99%, +10d

多方抵抗,用時間抵抗下跌,無報酬但是有風險,空方回補週期10天 ,-9.51% ~ -5.99%。

time to instead of drop down, no reward but has risk, short to cover time for 10 trading day, -9.51% to -5.99%
SPDR S&P 500 ETF (SPY) Trend Analysisus500

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