Merck & Co. Inc.
$147.76-0.4%
+$61.8B
Net Activity
+29.16% total shares
Institutions Holding
3865
Popularity Rank
#30
Avg Weight
0.42%
Total Value
$270.5B
3865 institutions currently hold MRK, with 1836 net buyers and 1646 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
1646
Net Buying Institutions
1836
Top 5 by Value
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Across its top 20 institutional holders, MRK's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 5/100, avg. turnover score 36/100).
MRK ranks #30 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
3865 institutions disclose a position in MRK, but none treat it as a major bet — even Barrow Hanley Mewhinney & Strauss LLC, its most concentrated holder, allocates just 2.9% of its own portfolio to it.
BlackRock has added to its MRK position for two straight quarters, increasing it by $6.1B to reach $29.2B today.
Nordea Investment Management AB has trimmed its MRK position for two straight quarters, cutting it by $669.9M while still holding $445.1M.
MRK is down 0.4% today, but institutions show net buying of $61.8B this quarter — a divergence between today's price move and the underlying institutional flow.
MRK posted net income of $3.2B over the trailing twelve months.
+$30.3B
Total Buy Value
$11.0B
Total Sell Value
1836
Net Buyers
1646
Net Sellers
MRK
Q2 2026
Top 5 Institutional Movers
MRK does not currently show a 13F-and-insider convergence signal — its insider confidence score is 0/100, below the threshold this product uses to flag combined buying pressure.
13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
0
unique buyers
—
buy value
12-Month Buy/Sell Activity
| Action | Insider | Date | Value |
|---|---|---|---|
| Sell | Chirfi Guindo | 2026-08-13 | $1.35M |
| Sell | Richard R. Deluca | 2026-08-12 | $1.46M |
| Sell | Richard R. Deluca | 2026-08-12 | $79K |
| Sell | Jennifer Zachary | 2026-08-12 | $10.72M |
| Sell | Richard R. Deluca | 2026-08-11 | $973K |
| Sell | Richard R. Deluca | 2026-08-11 | $718K |
| Sell | Richard R. Deluca | 2026-08-10 | $2.71M |
| Sell | Chirfi Guindo | 2026-08-06 | $1.97M |
| Action | Member | Trade Date | Amount |
|---|---|---|---|
| Sell (Full) | Alan Armstrong Senate | 2026-03-27 | $15K–$50K |
| Sell (Full) | Thomas H Tuberville Senate | 2023-10-16 | $1K–$15K |
| Sell (Full) | John P Ricketts Senate | 2023-09-21 | $50K–$100K |
9
Filings (90d)
$29.98M
Total Est. Value
228K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| CHIRFI GUINDO | 2026-08-13 | $1.35M |
| JENNIFER L ZACHARY | 2026-08-12 | $10.72M |
| RICHARD ROBERT DELUCA JR | 2026-08-12 | $1.54M |
| RICHARD ROBERT DELUCA JR | 2026-08-11 | $1.69M |
| RICHARD ROBERT DELUCA JR | 2026-08-10 | $2.71M |
| RICHARD ROBERT DELUCA JR | 2026-08-06 | $789K |
| CHIRFI GUINDO | 2026-08-06 | $1.97M |
| DAVID MARALDO | 2026-08-05 | $2.41M |
| DAVID M WILLIAMS | 2026-08-05 | $6.81M |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
No Schedule 13D/13G filings for this ticker
1
Filings (14d)
Merck & Co. filed an 8-K on August 4, 2026 to furnish its second-quarter 2026 earnings press release (Exhibit 99.1) plus supplemental information (Exhibit 99.2). The filing is a routine Item 2.02 disclosure and doesn't contain any actual financial figures in the body — it just points readers to the attached materials.
View Full Filing (SEC EDGAR)58933Y105, 589331107, 58933Y10 , 58933Y905, 58933Y955, 58933y105
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Access MRK's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/MRKCLI
npx alphasmo stocks get MRK