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 “sell signals” are useless during  “mania” markets. To wit: “If you bailed because of Bollinger Bands, ran away from relative strength or took direction from the directional market indicator in 2021, you paid for it. It’s testament to the straight-up trajectory of stocks that virtually all signals that told investors to do anything but buy have done them a disservice this year. In fact, when applied to the S&P 500, 15 of 22 chart-based indicators tracked by Bloomberg have actually lost money, back-testing data show. And all are doing worse than a simple buy-and-hold strategy, which is up 11%.” – Bloomberg Note: “Bloomberg’s back-testing model purchases the S&P 500 when an indicator signals a ‘buy’ and holds it until the system generates a ‘sell.’ The index gets sold, and a short position established, until a buy is triggered.”

Benjamin grahamCentral bankBollinger bandsPortfolio visualizerYear treasury bondபெஞ்சமின் கிரஹாம்மைய வங்கிபொலிங்கர் பட்டைகள்போர்ட்‌ஃபோலீயோ காட்சிப்படுத்தல்ஆண்டு கருவூலம் பத்திரம்