Institutional Value
$2465.5T
Total reported holdings
2026 data Public-data reference. official source
MERCK & CO. INC.
Open-data reference.
CUSIP: 58933Y105 · 178 institutional holders
What the 13F Data Shows for MERCK & CO. INC.
MERCK & CO. INC. (CUSIP: 58933Y105) appears in the SEC Form 13F filings of 178 institutional investment managers as of the 2025-12-31 quarter. Together these institutions report holding 26,827,269 shares with an aggregate market value of $2465.5T. 13F filings are quarterly disclosures that managers with at least $100 million in qualifying U.S. equity assets must file with the SEC within 45 days of each quarter end, so the holdings shown here are a snapshot of positions as of 2025-12-31 — not live or current holdings.
Looking at concentration, the top five institutional holders of MERCK & CO. INC. control 59% of the reported institutional shares, which makes ownership moderately concentrated — meaningful but not dominant influence from the largest holders. In the most recent quarter, 20 institutions initiated brand-new positions, 1 increased existing holdings, 2 trimmed their positions, and 28 exited entirely. Each of these actions is drawn directly from a line in a specific 13F filing that can be verified through SEC EDGAR.
Not investment advice. Every figure on this page is sourced from public SEC Form 13F filings and reflects positions as of the reporting quarter — institutional holdings can change significantly between filing dates, and 13F disclosures omit short positions, cash, non-U.S. holdings, and most derivatives. Nothing here is a recommendation to buy, sell, or hold any security. Verify current figures directly on SEC EDGAR and consult a licensed financial professional before making investment decisions based on institutional ownership data.
$2465.5T
Total Institutional Value
178
Institutional Holders
59%
Top-5 Concentration
20
New Buyers This Q
Ownership Concentration Gauge
How concentrated is institutional ownership of MERCK & CO. INC.? A higher percentage means fewer institutions control more of the stock.
Expense ratio for MERCK & CO. INC. — Green ≤ 0.20% (Low Cost), Yellow 0.20–0.75% (Average), Orange 0.75–1.50% (Above Avg), Red ≥ 1.50% (High Cost). Source: SEC EDGAR fund prospectus filings.
Concentration Score
59%
Top-5 holder share
New Buyers
20
Latest quarter activity
Institutional Concentration 59.0%
59% of institutional shares held by top 5
Top 5 institutional holders of MERCK & CO. INC. — share of total reported institutional value
Top Institutional Holders
| # | Institution | Shares | Value | Ownership % |
|---|---|---|---|---|
| 1 | Pacer Advisors, Inc. | 4,351,397 | $458028.0B | 18.6% |
| 2 | GROUPAMA ASSET MANAGMENT | 900,786 | $94812.0B | 3.8% |
| 3 | Oak Grove Capital LLC | 82,260 | $8658.7B | 0.4% |
| 4 | Anchor Investment Management, LLC | 66,699 | $7020.8B | 0.3% |
| 5 | SSA SWISS ADVISORS AG | 38,025 | $3962.3B | 0.2% |
| 6 | Banque Transatlantique SA | 18,828 | $1983.4B | 0.1% |
| 7 | ARWA LLC | 14,290 | $1504.2B | 0.1% |
| 8 | DGS Capital Management, LLC | 11,900 | $1252.6B | 0.1% |
| 9 | MidFirst Bank | 11,638 | $1225.0B | 0.0% |
| 10 | Cross Staff Investments Inc | 7,397 | $778608.0M | 0.0% |
| 11 | FLOYD FINANCIAL GROUP LLC | 5,339 | $652746.0M | 0.0% |
| 12 | BDFS Capital LLC | 3,544 | $376054.0M | 0.0% |
| 13 | Westshore Wealth, LLC | 3,491 | $367417.0M | 0.0% |
| 14 | CHELSEA COUNSEL CO | 3,260 | $346132.0M | 0.0% |
| 15 | TD Capital Management LLC | 3,160 | $332667.0M | 0.0% |
| 16 | Barnes Wealth Management Group, Inc | 2,949 | $310412.0M | 0.0% |
| 17 | Bell Investment Advisors, Inc | 2,421 | $254835.0M | 0.0% |
| 18 | Financially in Tune, LLC | 2,271 | $239045.0M | 0.0% |
| 19 | Tempo Wealth, LLC | 2,219 | $233620.0M | 0.0% |
| 20 | THRYVE WEALTH MANAGEMENT LLC | 2,206 | $232204.0M | 0.0% |
| 21 | Astoria Portfolio Advisors LLC. | 1,718 | $212721.0M | 0.0% |
| 22 | Strategic Investment Solutions, Inc. /IL | 500 | $52630.0M | 0.0% |
| 23 | SG Trading Solutions, LLC | 45,373 | $4776.0M | 0.0% |
Latest Quarter Activity
New Buyers (20)
Pacer Advisors, Inc. $458028.0B
GROUPAMA ASSET MANAGMENT $94812.0B
Oak Grove Capital LLC $8658.7B
Anchor Investment Management, LLC $7020.8B
SSA SWISS ADVISORS AG $3962.3B
Complete Exits (28)
Not Investment Advice: Institutional ownership data from SEC Form 13F filings is historical (reported ~45 days after quarter end). Holdings may have changed significantly. Not investment advice.
Frequently Asked Questions
How many institutional investors hold MERCK & CO. INC.? ▼
MERCK & CO. INC. is held by 178 institutional investors according to the latest SEC Form 13F filings. Institutional holders include hedge funds, mutual funds, pension funds, and other large investment managers required to disclose their U.S. equity holdings quarterly.
What is the total institutional ownership value of MERCK & CO. INC.? ▼
The total reported institutional ownership value of MERCK & CO. INC. is $2465.5T. This figure reflects the aggregate market value of all shares held by 13F-filing institutions as of their most recent quarterly report to the SEC.
How concentrated is institutional ownership of MERCK & CO. INC.? ▼
The top 5 institutional holders control 59% of all institutional shares in MERCK & CO. INC., making ownership moderately concentrated. High concentration means a small number of large funds hold significant influence over the stock.
What recent institutional activity has occurred in MERCK & CO. INC.? ▼
In the latest quarter, 20 institutions initiated new positions, 28 completely exited, 1 increased their holdings, 2 reduced their positions. These changes are reported in SEC Form 13F filings, which are filed within 45 days of quarter end. Note that positions may have changed since the filing date.
Where does MERCK & CO. INC. institutional ownership data come from? ▼
All institutional ownership data for MERCK & CO. INC. comes from SEC Form 13F filings, which are mandatory quarterly reports filed by institutional investment managers with at least $100 million in qualifying assets. These filings are public records available through the SEC EDGAR database.
Who is the largest institutional holder of MERCK & CO. INC.? ▼
The largest institutional holder of MERCK & CO. INC. is Pacer Advisors, Inc. with $458028.0B in reported holdings (4,351,397 shares). This is based on the most recent 13F filing and positions may have changed since the report date.
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Related Financial Data
Data sourced from SEC Form 13F filings via the EDGAR database. Filings reflect positions held as of quarter end and are reported within 45 days.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainFundData Editorial
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from SEC Form 13F filings via EDGAR. Consult a qualified professional before making decisions based on this data.
Read our methodology — how this data is sourced, computed, and verified.
Source: U.S. Securities and Exchange Commission (SEC) — EDGAR Form 13F-HR institutional holdings filings · 2024 Q4 13F filings disclose long positions of institutional managers with $100M+ AUM, filed quarterly within 45 days of period end. Short positions and certain hedging instruments not disclosed.