MU, SNDK, Neocloud Stocks Extend Gains On Anthropic Boost, SK Hynix Q3 Stunner; Jim Cramer Urges Caution

What happened

Memory chip and neocloud stocks extended gains after record SK Hynix earnings and Anthropic's IPO filing. Micron and SanDisk rose 4% each overnight, while CoreWeave, Nebius and IREN also advanced. Anthropic reported $16.3 billion in revenue for the first half of 2026.

Confirmed

Global impact / market context

Anthropic's revenue discloses large demand for AI computing, which means chipmakers and cloud data-center operators can expect more orders. That supports their sales and profit outlooks, and helps explain why investors bought memory and neocloud shares after recent selling pressure.

Analyst inference

The rally links AI software demand to hardware suppliers: Anthropic's growth suggests spending on chips and data centers stays strong. SK Hynix's jump in revenue and operating profit reinforces that signal, though Jim Cramer urged caution, showing some investors doubt the rally can last.

Analyst inference

What to watch

1. SK Hynix reported quarterly revenue up 328% and operating profit nearly sevenfold, and announced a dividend plus an expanded share buyback plan, which means it is returning more cash to shareholders. Confirmed
2. Watch whether Anthropic's IPO filing moves forward and whether its disclosed revenue and computing capacity commitments translate into confirmed orders for chipmakers and neocloud operators. Proposed
3. Watch whether neocloud stocks hold their rebound or fade, since sharp gains after weeks of selling pressure can reverse if investors doubt that AI infrastructure demand supports current valuations. Analyst inference

Affected assets

• OP — Optimism

Evidence

• stocktwits.com