推特用户JonahLupton称市场经历极差交易日,列出多只ETF的日波动标准差及统计罕见性,如XLK下跌3.8个标准差(1/13822概率),QQQ下跌3.6个标准差(1/6285概率)。
Insanely bad day for the markets... $NQ trying to bounce off the 30d ema and .236 fibs
This is how statistically rare today is when looking at the standard deviations of these ETF moves using daily vol with a 90d lookback:
$XLK -3.8σ 1 in 13,822
$QQQ -3.6σ 1 in 6,285
$SMH -3.5σ 1 in 4,299
$SPHB -3.5σ 1 in 4,299
$SPRX -3.0σ 1 in 741
$ARKK -2.9σ 1 in 536
$SPY -2.9σ 1 in 536
$IWM -2.8σ 1 in 391
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