Did retail investors get discouraged after watching the US market yesterday?

‌They started dumping from the very beginning of the session.
Everyone rushed to scalp 100% surges in bio stocks, which is why US semiconductor stocks performed poorly yesterday.
Even this morning, they hinted that prices wouldn't rise to yesterday's closing level at certain price points,
and as soon as it looked like a brief dip,
a lot of stop-losses and profit-taking orders were triggered.
It feels like
financial investment firms placed orders saying, "Sell my stocks."
Today, only retail investors and financial investment firms are selling.
Later, pension funds will likely sell small amounts by individual stocks.
For now, it seems there is sufficient recognition that semiconductors have hit a bottom to some extent.