Today: 1 March 2026
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NYSE:MRK 1 February 2026 - 28 February 2026

Merck stock: weekend Keytruda-Welireg data and Gardasil cuts set up Monday trade

Merck stock: weekend Keytruda-Welireg data and Gardasil cuts set up Monday trade

Merck shares closed up 3.8% at $123.82 Friday after reporting new cancer trial results for Keytruda and Welireg, with an FDA decision on the combination set for June 19, 2026. The company also announced about 150 job cuts at a North Carolina Gardasil vaccine plant amid weaker demand. Merck highlighted positive data in kidney, bladder, and ovarian cancer studies. Shares were little changed after hours.
28 February 2026
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Merck stock price hits a 52-week high on Deutsche Bank upgrade as MRK heads into holiday week

Merck stock price hits a 52-week high on Deutsche Bank upgrade as MRK heads into holiday week

Merck shares rose 1.8% to $121.41 Friday after Deutsche Bank upgraded the stock and raised its price target to $150. The stock hit a 52-week high of $123.33 before markets closed for the Presidents Day holiday. Merck plans to present new bladder and kidney cancer data at the ASCO GU meeting later this month. Chief marketing officer Chirfi Guindo sold 10,000 shares earlier in the week, according to a regulatory filing.
15 February 2026
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Merck stock pops on Deutsche Bank upgrade — what to watch ahead of ASCO GU

Merck stock pops on Deutsche Bank upgrade — what to watch ahead of ASCO GU

Merck shares climbed 1.8% to $121.41 in after-hours trading Friday after Deutsche Bank upgraded the stock and raised its price target. The move comes ahead of key cancer study results set for release at the ASCO Genitourinary Cancers Symposium later this month. Merck’s chief marketing officer sold 10,000 shares on Feb. 12. U.S. markets are closed Monday for Washington’s Birthday; trading resumes Tuesday.
13 February 2026
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Merck stock price slips after insider sale filings; what MRK investors are watching next

Merck stock price slips after insider sale filings; what MRK investors are watching next

Merck shares fell 0.5% to $117.01 after SEC filings showed insider stock sales by two executives on Feb. 9. Chief Marketing Officer Chirfi Guindo sold 10,000 shares; Executive Vice President Jennifer Zachary exercised and sold 121,573 shares. The moves followed a revenue forecast below Wall Street estimates. Merck underperformed the broader market and sector peers.
10 February 2026
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Dow Jones futures tick up as Wall Street braces for retail sales, jobs and CPI

Dow Jones futures tick up as Wall Street braces for retail sales, jobs and CPI

Dow futures rose 45 points to 50,264 early Tuesday after the index closed at a record 50,135.87 on Monday. Investors await U.S. retail sales data at 8:30 a.m. ET, with forecasts at 0.4%, followed by key payroll and inflation reports later this week. Tech stocks led Monday’s rebound, while losses in Amgen and Merck weighed on the Dow. Earnings from major consumer and industrial firms are also due.
10 February 2026
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Merck stock slides 3.5% as insider sale filing lands; traders eye next FDA deadline

Merck stock slides 3.5% as insider sale filing lands; traders eye next FDA deadline

Merck & Co shares dropped 3.5% to $117.65 Monday, underperforming a tech-led market rebound. EVP Jennifer Zachary sold 121,573 shares at a weighted-average $119.15 after exercising options, according to an SEC filing. The FDA is expected to rule Feb. 20 on expanding Keytruda’s use for ovarian cancer. Merck remains reliant on Keytruda as older drugs face increased competition.
10 February 2026
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Amgen stock drops nearly 2% as Dow drag builds — what AMGN investors watch next

Amgen stock drops nearly 2% as Dow drag builds — what AMGN investors watch next

Amgen shares dropped 1.8% to $377.28 in mid-afternoon trading Monday, weighing on the Dow Jones Industrial Average. The decline followed news of an FDA request to withdraw rare-disease drug Tavneos and a sharp 48% fall in Enbrel sales last quarter. Broader drug stocks lagged while traders awaited key U.S. jobs and inflation data later in the week.
9 February 2026
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Merck stock drops nearly 4%: why MRK is lagging the market today

Merck stock drops nearly 4%: why MRK is lagging the market today

Merck shares fell 3.9% to $117.16 Monday, underperforming the broader market as investors weighed patent risks and 2026 earnings guidance. Amgen, Pfizer, and AbbVie also declined. Merck last week projected 2026 sales of up to $67 billion and warned of a $2.5 billion hit from generic competition and weaker COVID-19 drug sales. The Dow lagged as Merck and Amgen dragged on the index.
9 February 2026
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Dow Jones Industrial Average slips under 50,000 as AI shakeout bites; payrolls, CPI loom

Dow Jones Industrial Average slips under 50,000 as AI shakeout bites; payrolls, CPI loom

The Dow Jones fell 133 points to 49,983 in Monday morning trade, slipping below 50,000 after Friday’s record close. The S&P 500 dipped 0.08% and the Nasdaq was flat as investors rotated out of tech and into industrial and defensive stocks. Amgen and Merck together shaved about 79 points from the Dow. Traders await key payrolls and inflation data later this week.
9 February 2026
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Merck stock is inches from a 52-week high — and an insider just sold shares

Merck stock is inches from a 52-week high — and an insider just sold shares

Merck shares closed up 1.8% at $121.93 on Friday, marking a seventh straight gain and finishing just below a 52-week high. A regulatory filing showed Animal Health chief Richard R. DeLuca sold 37,685 shares on Feb. 6 at an average of $120.92. Trading volume was about 13 million shares, below the 50-day average. Investors await Monday trading after Merck’s 2026 outlook and pipeline updates.
8 February 2026
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Merck stock rises 2% in New York as MRK traders size up outlook and a fresh RSV approval

Merck stock rises 2% in New York as MRK traders size up outlook and a fresh RSV approval

Merck shares rose about 2% to $120.72 Thursday after forecasting 2026 sales and profits below Wall Street estimates, citing patent expiries on older drugs. The company reported Q4 global sales of $16.4 billion and non-GAAP EPS of $2.04, and expects 2026 sales of $65.5–$67.0 billion. Health Canada approved ENFLONSIA for RSV prevention in infants. FDA review of WINREVAIR is set for September 21, 2026.
5 February 2026
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Merck stock rises after-hours as cautious 2026 forecast meets new cholesterol pill headlines

Merck stock rises after-hours as cautious 2026 forecast meets new cholesterol pill headlines

Merck shares rose 2.2% to $118.33 in after-hours trading Wednesday after new data showed its experimental cholesterol drug enlicitide cut LDL by up to 60% in a major trial. The company’s 2026 revenue forecast of $65.5–$67.0 billion missed Wall Street estimates, citing pressure from off-patent drugs and U.S. pricing. Keytruda sales reached $8.37 billion last quarter, while Gardasil revenue fell 34%.
5 February 2026
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Merck stock price rises today as MRK rallies on Keytruda strength despite soft 2026 outlook

Merck stock price rises today as MRK rallies on Keytruda strength despite soft 2026 outlook

Merck shares rose 2.8% to $119.11 by midday Wednesday after the company beat Q4 expectations, but projected 2026 revenue of $65.5–$67.0 billion, below analyst forecasts. Keytruda sales climbed 7% while Gardasil dropped 34% on weak China demand. The company cited a $2.5 billion hit from generic drugs and U.S. pricing pressure. Investors remain focused on Merck’s ability to offset declines in older products.
4 February 2026
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Merck stock price rises after hours after choppy day — MRK traders focus on 2026 outlook and FDA dates

Merck stock price rises after hours after choppy day — MRK traders focus on 2026 outlook and FDA dates

Merck shares rose 2.2% in after-hours trading Tuesday, closing at $115.84 after the company’s 2026 revenue forecast missed Wall Street estimates. The drugmaker cited a $2.5 billion hit from patent expirations, Medicare price talks, and weaker COVID-19 pill sales. Investors are watching Keytruda demand, Gardasil’s China performance, and FDA decisions expected later in 2026.
4 February 2026
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Dow Jones slips 167 points on AI disruption fears; Alphabet, Amazon earnings next

Dow Jones slips 167 points on AI disruption fears; Alphabet, Amazon earnings next

The Dow Jones Industrial Average fell 166.67 points, or 0.34%, to 49,240.99 Tuesday as tech and software stocks dropped on AI disruption fears. IBM and Salesforce weighed heavily, while Walmart rose 3% to surpass a $1 trillion market cap. The S&P 500 lost 0.84% and the Nasdaq slid 1.43%. Earnings from Alphabet and Amazon are due next.
3 February 2026
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Merck stock rises despite cautious 2026 outlook as patent losses loom

Merck stock rises despite cautious 2026 outlook as patent losses loom

Merck shares rose 3.1% to $116.86 after fourth-quarter earnings beat estimates, with Keytruda sales up 7% to $8.37 billion. The company forecast 2026 sales of $65.5–$67.0 billion, below Wall Street expectations, citing patent expirations and pricing pressure. Gardasil sales fell 34% to $1.03 billion. The FDA accepted Merck’s application for Winrevair, with a decision expected by September 2026.
3 February 2026
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