Why Is Sentage (SNTG) Stock Up 86% Today?

Group 1 - Sentage (NASDAQ:SNTG) stock is experiencing a significant increase of 85.5% despite no new press releases or analyst coverage [1][2] - The trading volume for SNTG has surpassed 4 million shares, significantly higher than its daily average of approximately 840,000 shares [1] - SNTG is classified as a penny stock, with a low trading price of $2.13 per share and a market capitalization of $5.975 million [1][2] Group 2 - The penny stock status of SNTG exposes it to higher volatility, particularly outside of normal trading hours [2] - There is a concern that the current rally may lead to a quick decline in stock price once investor interest wanes, potentially leaving some investors at a loss [2]