Company history · MRK
Every earnings report, outlook change and other company event Regimic has recorded for Merck since 2022 (6 events), each with how the stock moved 1 and 5 sessions later and what happened the previous times. Past reactions, not a probability.
In short
Past reactions, not a probability.
Event history
“The previous times” are the earlier events of the same type at Merck, at least 60 days before, the latest 12. Counts and medians need at least three of them.
TIKR
How the stock moved this time
Measured once the 5th session after the news has closed.
What happened the previous times
No earlier event of this type for Merck in the record.
Business Wire
How the stock moved this time
1 session +1.8% (vs S&P 500 +2.0%, vs sector (XLV) +1.4%) · 5 sessions +2.5% (vs S&P 500 +3.8%, vs sector (XLV) +1.9%)
What happened the previous times
1 session later
Average move +0.1% · vs S&P 500 −0.2% · vs sector (XLV) 0.0%
5 sessions later
Average move +1.4% · vs S&P 500 +1.6% · vs sector (XLV) +0.5%
Business Wire
How the stock moved this time
1 session +0.8% (vs S&P 500 −0.2%, vs sector (XLV) +1.0%) · 5 sessions +3.0% (vs S&P 500 +4.9%, vs sector (XLV) +3.5%)
What happened the previous times
1 session later
Average move −0.1% · vs S&P 500 −0.2% · vs sector (XLV) −0.3%
5 sessions later
Average move +0.9% · vs S&P 500 +0.5% · vs sector (XLV) −0.5%
Business Wire
How the stock moved this time
1 session −0.2% (vs S&P 500 −0.3%, vs sector (XLV) −0.3%) · 5 sessions +2.0% (vs S&P 500 +1.5%, vs sector (XLV) −0.6%)
What happened the previous times
Only 2 earlier events of this type: too few for counts or a median.
Business Wire
How the stock moved this time
1 session −0.8% (vs S&P 500 −0.8%, vs sector (XLV) −1.0%) · 5 sessions −2.7% (vs S&P 500 −3.1%, vs sector (XLV) −2.9%)
What happened the previous times
Only 1 earlier event of this type: too few for counts or a median.
Business Wire
How the stock moved this time
1 session +0.6% (vs S&P 500 +0.6%, vs sector (XLV) +0.3%) · 5 sessions +3.3% (vs S&P 500 +3.0%, vs sector (XLV) +1.9%)
What happened the previous times
No earlier event of this type for Merck in the record.
Historical Analogs puts today’s company news and the next scheduled market events next to how the market reacted the previous times. Past reactions, not a probability.
See Historical Analogs →FAQ
The last 5 times, it was higher 5 sessions later in 4 of them, with a median move of +2.5% and a range from −2.7% to +3.3%. That describes past reactions, not a probability.
From the first U.S. session open after the news to the close 1 and 5 sessions later, in percent, without dividends or costs. Each move is also shown against the S&P 500 (SPY) and the company’s sector ETF over the same sessions.
Earnings reports against analysts’ estimates, outlook changes, dividends and buybacks, deals, CEO changes, regulatory decisions, major contracts and new products: company news published on Regimic and verified earlier events. Reports of the same event a few days apart count once; analyst rating changes are not company events.
No. These are past reactions, not a probability: every event is different, and the next reaction can fall outside the past range.
Every company event Regimic published in Company News or verified (earnings calendar, confirmed sources). Events are only added; a wrong one (another company with the same name, or removed by hand) is never shown, and a measured reaction never changes. Reaction: from the first U.S. session open after the news to the close 1 and 5 sessions later, also against SPY and the company's sector ETF. Previous times: earlier events of the same type at the same company, at least 60 days before, the latest 12; counts, median, range and averages need at least three cases. Reports of the same type at the same company within 7 days (30 days for quarterly results) are one event, dated by the first. Past reactions, not a probability. Data updated 02 Nov 2026. For information only; not investment advice. Methodology