# MERCK & CO INC (MRK)

> Institutional ownership reported to the SEC as of Q3 2026, from Form 13F filings. Source: https://holderbook.com/stocks/MRK/

- Reporting holders: 195
- Reported value: $870.6M
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [CACTI ASSET MANAGEMENT LLC](https://holderbook.com/funds/1452208-cacti-asset-management-llc/) | $96.3M | 644,977 | 5.1% | 32 |
| [Douglas Lane & Associates, LLC](https://holderbook.com/funds/1672594-douglas-lane-associates-llc/) | $77.4M | 532,699 | 1.0% | 32 |
| [ROCKLAND TRUST CO](https://holderbook.com/funds/84616-rockland-trust-co/) | $66.6M | 458,433 | 2.5% | 32 |
| [FERGUSON WELLMAN CAPITAL MANAGEMENT, INC](https://holderbook.com/funds/869353-ferguson-wellman-capital-management-inc/) | $53.7M | 369,628 | 0.6% | 32 |
| [Quintet Private Bank (Europe) S.A.](https://holderbook.com/funds/1977290-quintet-private-bank-europe-s-a/) | $49.0M | 337,040 | 2.2% | 16 |
| [CapWealth Advisors, LLC](https://holderbook.com/funds/1531809-capwealth-advisors-llc/) | $39.4M | 270,888 | 3.0% | 32 |
| [EASTERN BANK](https://holderbook.com/funds/1126395-eastern-bank/) | $28.5M | 195,900 | 0.4% | 32 |
| [ARGENT CAPITAL MANAGEMENT LLC](https://holderbook.com/funds/1120926-argent-capital-management-llc/) | $24.2M | 166,757 | 0.8% | 32 |
| [Oak Grove Capital LLC](https://holderbook.com/funds/1661762-oak-grove-capital-llc/) | $23.3M | 160,388 | 1.1% | 32 |
| [BRIGHT ROCK CAPITAL MANAGEMENT, LLC](https://holderbook.com/funds/1509973-bright-rock-capital-management-llc/) | $20.6M | 142,000 | 3.9% | 22 |
| [MassMutual Private Wealth & Trust, FSB](https://holderbook.com/funds/1103653-massmutual-private-wealth-trust-fsb/) | $20.4M | 140,363 | 0.5% | 32 |
| [Farther Finance Advisors, LLC](https://holderbook.com/funds/1992825-farther-finance-advisors-llc/) | $19.3M | 132,641 | 0.1% | 16 |
| [Allen Mooney & Barnes Investment Advisors LLC](https://holderbook.com/funds/2001461-allen-mooney-barnes-investment-advisors-llc/) | $18.3M | 125,784 | 2.7% | 19 |
| [PARK NATIONAL CORP /OH/](https://holderbook.com/funds/805676-park-national-corp-oh/) | $17.6M | 120,805 | 0.5% | 32 |
| [GAMMA Investing LLC](https://holderbook.com/funds/2010235-gamma-investing-llc/) | $14.6M | 100,519 | 0.5% | 12 |
| [TOMPKINS FINANCIAL CORP](https://holderbook.com/funds/1005817-tompkins-financial-corp/) | $13.5M | 92,848 | 1.0% | 31 |
| [SCHAPER BENZ & WISE INVESTMENT COUNSEL INC/WI](https://holderbook.com/funds/1033974-schaper-benz-wise-investment-counsel-inc-wi/) | $11.3M | 77,959 | 0.8% | 32 |
| [CANANDAIGUA NATIONAL BANK & TRUST CO](https://holderbook.com/funds/1074266-canandaigua-national-bank-trust-co/) | $10.2M | 70,117 | 0.9% | 20 |
| [BONNESS ENTERPRISES INC](https://holderbook.com/funds/1105471-bonness-enterprises-inc/) | $10.1M | 69,500 | 3.3% | 32 |
| [CoreCap Advisors, LLC](https://holderbook.com/funds/1902501-corecap-advisors-llc/) | $9.7M | 66,609 | 0.3% | 19 |
| [Valeo Financial Advisors, LLC](https://holderbook.com/funds/1722641-valeo-financial-advisors-llc/) | $8.1M | 55,775 | 0.2% | 32 |
| [Insight Wealth Strategies, LLC](https://holderbook.com/funds/1749914-insight-wealth-strategies-llc/) | $7.9M | 54,318 | 0.8% | 5 |
| [VALLEY WEALTH MANAGERS, INC.](https://holderbook.com/funds/924166-valley-wealth-managers-inc/) | $7.0M | 48,400 | 0.4% | 32 |
| [Violich Capital Management, Inc.](https://holderbook.com/funds/1326766-violich-capital-management-inc/) | $7.0M | 48,307 | 0.8% | 32 |
| [Venture Visionary Partners LLC](https://holderbook.com/funds/1792283-venture-visionary-partners-llc/) | $6.5M | 44,851 | 0.2% | 28 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q3 2026 | 195 | $870.6M |
| Q2 2026 | 3,860 | $286.9B |
| Q1 2026 | 3,804 | $244.0B |
| Q4 2025 | 3,679 | $214.5B |
| Q3 2025 | 3,322 | $168.4B |
| Q2 2025 | 3,337 | $161.9B |
| Q1 2025 | 3,463 | $182.3B |
| Q4 2024 | 3,611 | $201.2B |
| Q3 2024 | 3,491 | $229.1B |
| Q2 2024 | 3,553 | $250.1B |
| Q1 2024 | 3,547 | $276.6B |
| Q4 2023 | 3,440 | $222.4B |