Why Genmab A/S (GMAB) stock rose 28.3% on Wednesday, October 28, 2026

Genmab A/S (GMAB) closed at $57.29, up 28.25% on Wednesday, October 28, 2026, on volume of 29,187,635 shares (8.7× its 3-month average); market value about $35.20B.

What happened: primary sources

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

• Oct 28, 2026: SEC 6-K: Current report (foreign issuer), period ended Oct 28, 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 GMAB

GMAB 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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