I noticed this phenomenon at the time and even made a small trade based on it, but I stopped quickly because I was afraid of 'losing big by chasing small gains.' Especially later, it felt like some profit-taking was happening in batches, which I didn’t expect to be manipulation? Σ(°ロ°)... Actually, it’s not every day, but it does happen quite often. Using the initial mindless buying liquidity right after the U.S. stock market opens to sell, then later buying back using the liquidity from follow-up selling? Constantly profiting from the spread.