Warren Buffett’s investment philosophy emphasizes being cautious when the market is greedy and aggressive when others are fearful. The Relative Strength Index (RSI), which ranges from 0 to 100, indicates market sentiment; stocks with an RSI below 30 are considered oversold.
As of trading on Friday, Guardant Health Inc (GH) reached an RSI of 29.9 after its shares traded as low as $19.67. In contrast, the S&P 500 ETF (SPY) held an RSI of 68.4. GH’s trading range over the past 52 weeks shows a low of $19.67 and a high of $41.06, with its last trade at $19.70.