Hong Kong's major stock indices surrendered early advances on Monday, with the benchmark Hang Seng Index, Hang Seng Tech Index, and Hang Seng China Enterprises Index all dipping into negative territory. This reversal came despite the tech-heavy gauge initially surging over 2% during the morning session. Market momentum faded rapidly as investors took profits following the strong opening, resulting in all three benchmarks erasing gains by midday. The Hang Seng Tech Index's notable retreat from its intraday peak particularly underscored the session's volatility, with early optimism giving way to broad-based selling pressure across the financial hub's equity markets.