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Merck shares outstanding MRK

Diluted shares outstanding, averaged over each quarter, from 2009.

Latest quarter, to Jun 30, 2026
2.5B
On a year earlier
−1.7%
fewer shares

Merck had 2.5B diluted shares outstanding on average in Q2 FY26, the quarter to Jun 30, 2026.

That is 1.7% fewer than a year earlier, so each share owns a little more of the company.

Shares outstanding over time

Open the interactive chart, with overlays and comparisons

Fiscal year by fiscal year

Fiscal yearShares, fourth quarterChange
FY20252.5B−2%
FY20242.5B+0%
FY20232.5B−1%
FY20222.5B+1%
FY20212.5B−0%
FY20202.5B−1%
FY20192.6B−3%
FY20182.6B−3%
FY20172.7B−2%
FY20162.8B−2%
FY20152.8B−2%
FY20142.9B−3%
FY20133B−4%
FY20123.1B+0%
FY20113.1B−0%

Each fiscal year is the twelve months to its fourth quarter, shown as the fourth quarter's average share count.

Quarter by quarter

QuarterEndedShares outstandingOn a year earlier
Q2 FY262.5B−2%
Q1 FY262.5B−2%
Q4 FY252.5B−2%
Q3 FY252.5B−2%
Q2 FY252.5B−1%
Q1 FY252.5B−1%
Q4 FY242.5B+0%
Q3 FY242.5B−0%
Q2 FY242.5B+0%
Q1 FY242.5B−0%
Q4 FY232.5B−1%
Q3 FY232.5B+0%

What the shares outstanding tells you

Diluted shares outstanding, averaged over the period. Fewer shares means each one owns more of the company.

A falling count usually means buybacks. A rising one means stock pay, acquisitions paid in shares or new shares sold.

More on Merck

Valuation data, not investment advice. Prices as of . Reported figures come from the company's filings with the SEC.