AMDAMD

Regular session

11:20am ET

Roughly $65 billion of market value disappeared in one session at this $669 billion AI-chip bellwether. Moves this size are rare here, and they tend to set the tone for the rest of the group.

PLTRPalantir

Regular session

11:20am ET

A 7.14% drop to $154.80 from a $166.69 open takes roughly $25 billion off a $356 billion name in a single session. Moves this size are routine for one of the market's most expensive AI software stocks, which is exactly why the $166.69 level matters on any bounce.

WFCWells Fargo &

Regular session

11:20am ET

Down 4.79% to $84.69 from an $88.95 open, an outsized single-session move for a $254 billion megabank that rarely swings this hard. Worth watching whether the selling broadens across the big lenders.

BHPBHP

Regular session

11:20am ET

Roughly $10 billion comes off the world's largest miner in a single session, a 4.89% drop to $77.86 from an $81.86 open. Moves this size are rare for a mega-cap resource name, and the close is what matters now.

AXPAmerican Express

Regular session

11:20am ET

A 3.54% fade to $327.71 from a $339.75 open takes roughly $8 billion off a $220 billion blue chip in a single session, an unusually sharp day for a name that rarely moves like this. Whether it holds the low into the close is the thing to watch.

BNYBank of New York Mellon

Regular session

11:00am ET

Roughly $4 billion comes off the $99.8 billion custody bank, an outsized single-session move for a name that usually trades like a utility. Keep an eye on whether it holds the $154.50 open as support in coming sessions.

MUMicron Technology

Regular session

11:00am ET

A 9.39% slide to $682.79 from a $753.53 open takes roughly $70 billion off a $772 billion memory giant in a single session. Moves this size are rare for a megacap chipmaker, so the next few closes set the tone.

TXNTexas Instruments

Regular session

11:00am ET

A 4.9% slide takes roughly $13 billion off this analog chipmaker in a single session, and it came after AMD, a competitor, announced a quantum error-correction platform with Oak Ridge and IBM (the stock has followed 5 of 5 AMD releases).

METAMeta

Regular session

11:00am ET

Roughly $80 billion comes off a $1.3 trillion company in one session, an outsized single-day move for a mega cap this size. No confirmed catalyst yet, so the next few sessions decide how much of it sticks.

MARAMARA

Regular session

11:00am ET

A 10.8% drop to $5.98 from a $6.70 open takes roughly $280 million off this $2.3 billion miner in one session, and it leaves the stock trading below $6 for the first time in this slide. Another leg lower puts the single-digit floor in play.

ROSTRoss Stores

Regular session

11:00am ET

A 4.47% drop to $238.16 from a $249.30 open takes roughly $3.4 billion off this $76.4 billion retailer, an outsized day for a name that usually trades like a defensive anchor. Next read comes with its earnings report.

AMZNAmazon

Regular session

11:00am ET

A 5.55% drop to $256.61 takes roughly $155 billion off a $2.8 trillion company in one session, a move this megacap rarely makes. Whether buyers step in near the lows is the thing to keep an eye on.