US stocks add $500B after the open

More than $500 billion was reportedly added to the U.S. stock market in just 30 minutes after the open.
Semiconductor and AI-linked names led the move as buyers quickly stepped back into risk assets.
For $QQQ and $SMH, the reaction shows how sensitive the market remains to AI momentum and chip-sector strength.
The bigger signal is that even after recent volatility, liquidity can rotate back into market leaders very quickly.
The key question now is whether this is the start of real follow-through or just another aggressive intraday squeeze.