the tape · 2026-10-07BULL▼ -19.1%GLND▼ -9.7%GPRO▼ -7.6%MSTR▼ -6.8%CAT▼ -5.7%NBIS▼ -5.1%MU▲ +4.1%COIN▼ -3.9%ASTS▼ -3.9%VST▲ +3.9%SMCI▲ +3.4%AVAV▼ -3.3%GEV▼ -3.1%ARM▼ -2.7%LLY▲ +2.7%RDDT▲ +2.5%SPCX▼ -2.5%NEM▼ -2.4%META▼ -2.4%HPE▲ +2.3%
MRK
Merck ·
36 big moves · since May 2026
From the desk · Oct 05, 2026
MRK dropped 3.3 percent today, and there are two stories behind it. First: Vaxcyte just posted vaccine trial data strong enough to threaten real market share in a 3 to 6 billion dollar market currently anchored by Merck and Pfizer. Near-term, that stings. But the bigger weight is Keytruda — Merck's flagship drug and largest revenue source — which faces generic competition starting in 2028. A patent cliff, for the uninitiated, isn't an event, it's a slow-motion countdown the market eventually starts pricing aggressively. Today, two headlines hit the same soft spot. What you want to watch: any Merck pipeline announcements that can credibly replace Keytruda revenue, because a 2028 problem becomes a 2025 valuation problem faster than most people expect.
Every move of 1.5% or more
2026-10-06 · Yahoo Finance
+1.7% — Merck (MRK) Beats Stock Market Upswing: What Investors Need to Know
T+1 +0.6%T+5 — pendingT+20 — pending
2026-10-05 · Yahoo Finance
-3.3% — Better Dividend for Retirees: AbbVie vs. Merck
T+1 +1.7%T+5 — pendingT+20 — pending
2026-09-30 · Yahoo Finance
-2.7% — Why Merck (MRK) Dipped More Than Broader Market Today
T+1 -1.0%T+5 -1.7%T+20 — pending
2026-09-23 · Yahoo Finance
-1.9% — Merck (MRK) Declines More Than Market: Some Information for Investors
T+1 -0.1%T+5 -1.9%T+20 — pending
2026-09-21 · Yahoo Finance
+1.8% — Moderna Surges 9% as Phase 3 Melanoma Data Wins Presidential Symposium Slot; Merck and BioNTech Edge Higher
T+1 +0.9%T+5 -0.5%T+20 — pending
2026-09-17 · Yahoo Finance
+1.5% — Merck (MRK) Outperforms Broader Market: What You Need to Know
T+1 -0.2%T+5 +0.6%T+20 — pending
2026-09-10 · Yahoo Finance
-1.9% — Merck (MRK) Dips More Than Broader Market: What You Should Know
T+1 -0.5%T+5 +1.7%T+20 — pending
2026-08-27 · Yahoo Finance
-2.3% — Is Merck Stock Reaching A Valuation Ceiling At 6x Sales?
T+1 -0.8%T+5 +1.9%T+20 -0.5%
2026-08-26 · Yahoo Finance
-2.1% — Merck Stock Hits New 52-Week High: What's Driving the Rally?
T+1 -2.3%T+5 -1.0%T+20 -3.3%
2026-08-25 · Yahoo Finance
+3.8% — Merck Just Gained 19% in a Month. What Would It Take to Get MRK Stock Up to $200?
T+1 -2.1%T+5 -4.2%T+20 -5.3%
2026-08-21 · Yahoo Finance
+2.4% — Can Merck & Company (MRK)’s Stake in Evaxion A/S (EVAX) Validate the Potential of AI-Driven Vaccine Discovery?
T+1 -1.2%T+5 -2.8%T+20 -2.0%
2026-08-19 · Benzinga
+12.6% — Merck Just Raised the Stakes for Pfizer's Cancer Vaccine Ambitions
T+1 -2.1%T+5 +0.6%T+20 -3.3%
2026-08-13 · no single source
+2.0% — Moved with the tape — no single reported reason that day.
T+1 +0.2%T+5 +9.9%T+20 +6.2%
2026-08-12 · no single source
+1.9% — Moved with the tape — no single reported reason that day.
T+1 +2.0%T+5 +14.5%T+20 +8.9%
2026-08-10 · no single source
+1.8% — Moved with the tape — no single reported reason that day.
T+1 -0.4%T+5 +3.9%T+20 +13.4%
2026-08-03 · no single source
-1.9% — Moved with the tape — no single reported reason that day.
T+1 +0.2%T+5 +2.5%T+20 +15.6%
2026-07-23 · no single source
+2.4% — Moved with the tape — no single reported reason that day.
T+1 +0.5%T+5 -0.5%T+20 +14.2%
2026-07-20 · no single source
-2.4% — Moved with the tape — no single reported reason that day.
T+1 +1.5%T+5 +5.1%T+20 +9.3%
2026-07-16 · no single source
+3.3% — Moved with the tape — no single reported reason that day.
T+1 -0.1%T+5 +2.2%T+20 +6.2%
2026-07-15 · no single source
+2.3% — Moved with the tape — no single reported reason that day.
T+1 +3.3%T+5 +3.1%T+20 +7.5%
2026-07-14 · no single source
-2.6% — Moved with the tape — no single reported reason that day.
T+1 +2.3%T+5 +4.5%T+20 +8.0%
2026-07-08 · no single source
-2.2% — Moved with the tape — no single reported reason that day.
T+1 -0.7%T+5 -1.9%T+20 +1.9%
2026-07-07 · no single source
+1.6% — Moved with the tape — no single reported reason that day.
T+1 -2.2%T+5 -6.3%T+20 -0.7%
2026-07-06 · no single source
-2.1% — Moved with the tape — no single reported reason that day.
T+1 +1.6%T+5 -2.2%T+20 +0.8%
2026-07-02 · no single source
+3.3% — Moved with the tape — no single reported reason that day.
T+1 -2.1%T+5 -4.6%T+20 +0.5%
2026-07-01 · no single source
-2.4% — Moved with the tape — no single reported reason that day.
T+1 +3.3%T+5 -0.2%T+20 +3.5%
2026-06-26 · no single source
+2.6% — Moved with the tape — no single reported reason that day.
T+1 +0.6%T+5 -1.5%T+20 +1.6%
2026-06-25 · no single source
+4.0% — Moved with the tape — no single reported reason that day.
T+1 +2.6%T+5 +3.3%T+20 +4.5%
2026-06-23 · no single source
+3.6% — Moved with the tape — no single reported reason that day.
T+1 +0.8%T+5 +7.4%T+20 +6.6%
2026-06-15 · no single source
-3.5% — Moved with the tape — no single reported reason that day.
T+1 +0.2%T+5 +4.1%T+20 +7.6%
2026-06-04 · no single source
+4.8% — Moved with the tape — no single reported reason that day.
T+1 +0.4%T+5 +0.4%T+20 +5.4%
2026-06-01 · no single source
-3.0% — Moved with the tape — no single reported reason that day.
T+1 +0.4%T+5 +3.8%T+20 +11.6%
2026-05-26 · no single source
-2.2% — Moved with the tape — no single reported reason that day.
T+1 +0.4%T+5 -3.4%T+20 +0.7%
2026-05-22 · no single source
+5.6% — Moved with the tape — no single reported reason that day.
T+1 -2.2%T+5 -5.9%T+20 -2.3%
2026-05-21 · no single source
+2.5% — Moved with the tape — no single reported reason that day.
T+1 +5.6%T+5 +2.5%T+20 -0.3%
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