Tesla Wipes Out $90 Billion of Market Cap in One Trading Session

Tesla just handed shareholders a brutal session. The stock slid 6.65% from its opening price of $373.45, closing the day at $348.61 — a roughly $90 billion bite out of its market cap in a single stretch of trading.

That kind of one-day value destruction is rare even for a name as volatile as Tesla. According to 247wallst.com, it ranks among the largest single-session losses the company has absorbed in recent memory.

The number traders will stare at now is $373.45. That's the open, and it's the line that decides how the next few sessions get read. Reclaim it, and the drop starts to look like a sentiment blip. Stay under it, and the bearish case gets heavier with every hour.

Big regular-hours moves like this don't die at the bell. Institutional investors tend to revisit position sizes afterward, and options desks reprice volatility, which is why follow-through sessions carry extra weight. If sellers keep pressing, that open level gets tested again.

For the long-term crowd, one rough day rarely rewrites the fundamental story. But a $90 billion market cap swing is the sort of jolt that forces everyone — bulls, bears and the merely curious — to take a fresh look at where they get in and where they get out.