Why Nautilus Biotechnology, Inc. (NAUT) stock rose 11.1% on Wednesday, October 28, 2026

Nautilus Biotechnology, Inc. (NAUT) closed at $3.21, up 11.07% on Wednesday, October 28, 2026, on volume of 15,064,098 shares (3.1× its 3-month average); market value about $400.0M.

What happened: primary sources

Events Nexqual found for NAUT on Wednesday, October 28, 2026 or the trading day before (October 27, 2026):

• Oct 27, 2026: Reported quarterly results (SEC 8-K) for the quarter ended Sep 30, 2026: EPS −$0.12 vs consensus −$0.14 (beat), on the analysts' basis (usually adjusted, not GAAP). source
• Oct 27, 2026: SEC 10-Q: Quarterly report, period ended Sep 30, 2026 source

These are listed as context. A filing or rating change on the same day is not proof that it caused the move; read the source.

More on NAUT

NAUT stock page: price, SEC financials, insider trades, superinvestor holders, analyst estimates and options. Other big moves that day: October 28, 2026.

Sources: SEC EDGAR, Nexqual Earnings Flash, analyst rating changes, Nexqual market data. Built October 28, 2026 at 22:05 UTC. Not investment advice.

Data source: Nexqual. Last updated: October 28, 2026 at 22:05 UTC. This page is informational and not investment advice.

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