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NYSE · Healthcare

Merck & Co. Inc. (MRK)

Research · charts · filings · insider activity

$148.30 +4.67 (+3.25%)
Last quote · 2026-10-20 20:00:00 UTC

Facts as of

Each figure carries its own date. Quotes are delayed. A headline is the latest news, not a confirmed cause. Not investment advice.

Last price$148.30 (delayed by more than an hour: latest quote available)
Change+4.67 (+3.25%)
Quote time2026-10-20 20:00 UTC
Short interestBelow 15% of float (not on the squeeze board)
Trading halt todayNone in the halt feed as of 2026-10-21 04:46 UTC
Latest headlineWhat Happens To Merck Stock If Keytruda Sales Stop Growing? (2026-10-21)
Offering or shelf filingNone among the latest 20 SEC filings (back to 2026-08-07)

Why is Merck & Co. Inc. stock moving today?

Merck & Co. Inc. (MRK): Up 3.25% to $148.30 (+4.67), at the delayed quote taken 2026-10-20 20:00 UTC. Latest headline (2026-10-21): "What Happens To Merck Stock If Keytruda Sales Stop Growing?".

MRK live chartTrading halts todayMorning editionShort-squeeze board

Merck's Keytruda is the best-selling oncology drug in the world. The company is racing to build a post-Keytruda pipeline before the patent cliff in the late 2020s.

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  1. start with the overview, open the scanner, click MRK, or search the top bar. unified page: price, profile, latest headlines.
  2. scan filings next, 8-k feed surfaces material events (earnings, m&a, insider changes). ai summary ships the takeaway in one paragraph.
  3. check insider activity, a cluster of form 4 buys from executives often precedes outperformance. feed groups by signer.
  4. size in the simulator, paper-trade MRK with l2-walked fills before risking capital. analytics tracks win rate, profit factor, expectancy.

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