Dow Soars 800 Points Driven By Healthcare Stocks — But Chip Stocks Drag S&P 500, Nasdaq

UnitedHealth shares jumped nearly 6% after BofA upgraded UNH to Buy from Neutral and raised its price target to $450.

Likely supports continued relative strength versus managed-care peers over the next sessions, barring broader risk-off.

The article cites two separate target hikes (BofA and Morgan Stanley) with specific catalysts (cost trends, utilization easing, AI efficiency), which typically sustains momentum after the open.

Johnson & Johnson shares were up more than 2% in Thursday’s opening trade as investors rotated into healthcare.

Modest near-term support likely, but direction depends on whether the rotation persists.

The move is attributed to sector rotation rather than new JNJ-specific news, so incremental trading edge is limited.

Merck shares surged about 5% in Thursday’s opening trade alongside other healthcare strength.

Could extend intraday/near-term gains if healthcare leadership continues.

The article frames the move as part of a broader rotation, not a discrete MRK event.

Broadcom fell more than 15% after it chose not to raise AI revenue expectations for fiscal 2026 and 2027.

Downward pressure likely persists while investors reprice AI revenue trajectory and demand expectations.

The article directly links the magnitude of the drop to a specific decision on AI revenue expectations for defined fiscal years.

Marvell Technology shares were down between 1% and 7% as chip stocks tumbled on the broader AI-expectations reset.

Likely remains volatile and correlated with the semiconductor complex until fresh company-specific news emerges.

The article provides only a range of declines and attributes the tape move to chip weakness rather than MRVL-specific disclosure.

Micron Technology shares were down between 1% and 7% during the opening trade as chip stocks sold off.

Near-term downside bias if the semiconductor complex continues to de-risk AI expectations.

The article mentions MU only as part of the group of decliners without additional MU-specific facts.

Nvidia shares were down between 1% and 7% as chip stocks tumbled following Broadcom’s decision not to raise AI revenue expectations.

May see continued relative weakness intraday if investors generalize the AI demand caution.

The article does not cite NVDA-specific news, so the impact is correlation-driven from the sector move.

Advanced Micro Devices shares were down between 1% and 7% in Thursday’s opening trade amid the chip selloff.

Likely remains range-bound to lower until the market finds a new AI demand narrative.

No AMD-specific catalyst is provided; the move is described as part of the chip complex decline.