Stock ownership · SEC 13F · Q4 2025

MERCK & CO. INC.

Who owns MERCK & CO. INC. (CUSIP 58933Y105)? A look at the institutions behind it, how tightly they hold it, and the latest quarter's moves.

$582.8M
Reported value
23
Institutions
98%
Top-5 share

The verdict

According to SEC Form 13F-HR filings in this corpus, MERCK & CO. INC. ranks #9 of 775 tracked securities by reported institutional value (largest first), matching the /stocks listing among names with ≥5 reporting holders. 23 institutions report $582.8M as of Q4 2025, with ownership dominated by its top few institutional owners.

23
institutions hold it
$582.8M
reported 13F value
98%
held by top 5
#9
of 775 by value

Based on long positions reported to the SEC as of Q4 2025; 13F omits shorts, options and non-US holdings.

According to SEC Form 13F-HR filings in this corpus, MERCK & CO. INC. ranks #9 of 775 tracked securities by reported institutional value (largest first), matching the /stocks listing among names with ≥5 reporting holders.

How 13F ownership is computed · All tracked stocks · Concentration rankings

SEC Form 13F-HR ownership desk

CUSIP 58933Y105 · Q4 2025 $583M reported

VALUE-MEGA · HOLDERS-NARROW · CONC-DOM · CLEAR-PEER · ACTIVITY-HOT · BOOK-FULL

  • VALUE-MEGA #9/775
  • HOLDERS-NARROW 23 filers
  • CONC-DOM 98% top-5
  • CLEAR-PEER EXXON MOBIL
  • ACTIVITY-HOT 20 new
  • BOOK-FULL 8Q history

Photo-finish peer on reported value: EXXON MOBIL CORP

Read with: Ownership concentration guide - MERCK & CO. INC.'s top-five holders account for 98% of reported value — read concentration before treating any single filer as a signal.

Reported-value neighbourhood · MERCK & CO. INC.

Nearest tracked securities by aggregate 13F reported value, not a full corpus reprint.

MERCK & . . · this stock$583MEXXON MOBIL · near$519MMETA PLATFORMS · near$497MSALESFORCE · near$486MNEWMONT · near$484M
Aggregate reported institutional value ($)

MERCK & CO. INC. vs. the broadly-held institutional universe

Where this security's reporting-institution count sits among tracked 13F securities

23 Top 12% higher than 88% of 216 securities

Broadly-held tracked securities, banded by reporting-institution count

Each bar is a band; taller bars hold more securities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source SEC Form 13F-HR filings · Q4 2025

Largest institutional holders of MERCK & CO. INC.
  1. 1
    Pacer Advisors, Inc. $458.0M
  2. 2
    GROUPAMA ASSET MANAGMENT $94.8M
  3. 3
    Oak Grove Capital LLC $8.7M
  4. 4
    Anchor Investment Management, LLC $7.0M
  5. 5
    SSA SWISS ADVISORS AG $4.0M
  6. 6
    Banque Transatlantique SA $2.0M

Top 6 reported holders by value · Q4 2025

Institutional ownership over time

The number of institutions reporting a MERCK & CO. INC. position has held steady from 23 to 23 over the last 8 quarters of 13F filings.

1020304050 Q1'24Q2'24Q3'24Q4'24Q1'25Q2'25Q3'25Q4'25 23
Distinct 13F filers holding MERCK & CO. INC., by quarter

Top Institutional Holders

# Institution Shares Value Share of reported
1 Pacer Advisors, Inc. 4,351,397 $458.0M 78.6%
2 GROUPAMA ASSET MANAGMENT 900,786 $94.8M 16.3%
3 Oak Grove Capital LLC 82,260 $8.7M 1.5%
4 Anchor Investment Management, LLC 66,699 $7.0M 1.2%
5 SSA SWISS ADVISORS AG 38,025 $4.0M 0.7%
6 Banque Transatlantique SA 18,828 $2.0M 0.3%
7 ARWA LLC 14,290 $1.5M 0.3%
8 DGS Capital Management, LLC 11,900 $1.3M 0.2%
9 MidFirst Bank 11,638 $1.2M 0.2%
10 Cross Staff Investments Inc 7,397 $779K 0.1%
11 FLOYD FINANCIAL GROUP LLC 5,339 $653K 0.1%
12 BDFS Capital LLC 3,544 $376K 0.1%
13 Westshore Wealth, LLC 3,491 $367K 0.1%
14 CHELSEA COUNSEL CO 3,260 $346K 0.1%
15 TD Capital Management LLC 3,160 $333K 0.1%
16 Barnes Wealth Management Group, Inc 2,949 $310K 0.1%
17 Bell Investment Advisors, Inc 2,421 $255K 0.0%
18 Financially in Tune, LLC 2,271 $239K 0.0%
19 Tempo Wealth, LLC 2,219 $234K 0.0%
20 THRYVE WEALTH MANAGEMENT LLC 2,206 $232K 0.0%
21 Astoria Portfolio Advisors LLC. 1,718 $213K 0.0%
22 Strategic Investment Solutions, Inc. /IL 500 $53K 0.0%
23 SG Trading Solutions, LLC 45,373 $5K 0.0%

Investment Discretion

SEC Form 13F requires each institutional filer to report whether it exercises sole or shared discretion over a position. Among MERCK & CO. INC.'s reported holders for Q4 2025, by reported value:

Sole discretion (SOLE)
99.7%
Shared-defined discretion (DFND)
0.3%

Latest Quarter Activity · Q4 2025

New positions (20)

Pacer Advisors, Inc. $458.0M
GROUPAMA ASSET MANAGMENT $94.8M
Oak Grove Capital LLC $8.7M
Anchor Investment Management, LLC $7.0M
SSA SWISS ADVISORS AG $4.0M
Banque Transatlantique SA $2.0M

Complete exits (28)

CIBC Bancorp USA Inc. exited
Kimelman & Baird, LLC exited
Kensington Investment Counsel, LLC exited
Blue Fin Capital, Inc. exited
Court Place Advisors, LLC exited
Fulcrum Asset Management LLP exited

Frequently Asked Questions

How many institutions hold MERCK & CO. INC.?▼
MERCK & CO. INC. is held by 23 institutional investors per the latest SEC Form 13F filings as of Q4 2025.
Where does MERCK & CO. INC. sit among tracked securities?▼
According to SEC Form 13F-HR filings in this corpus, MERCK & CO. INC. ranks #9 of 775 tracked securities by reported institutional value (largest first), matching the /stocks listing among names with ≥5 reporting holders. The ordinal is recomputed live among securities with ≥5 reporting holders. See /methodology/#corpus-placement.
What is the total institutional value of MERCK & CO. INC.?▼
Institutions report $582.8M of MERCK & CO. INC. as of Q4 2025.
How concentrated is ownership of MERCK & CO. INC.?▼
The top five institutional holders account for 98% of the reported institutional value in MERCK & CO. INC., making ownership dominated by its top few institutional owners.
Who is the largest institutional holder of MERCK & CO. INC.?▼
Pacer Advisors, Inc. is the largest reported holder of MERCK & CO. INC. with $458.0M across 4,351,397 shares as of Q4 2025.

Nationwide stocks with similar institutional value or holder count

Two 13F-derived peer sets for MERCK & CO. INC.: nearest aggregate reported value and nearest institutional holder count, not catalog browse links.

Similar reported value

Nearest stocks by aggregate 13F reported value ($582.8M here).

EXXON MOBIL CORP $519.1M META PLATFORMS INC $496.8M SALESFORCE INC $486.4M NEWMONT CORP $484.2M

Similar holder count

Nearest stocks by number of disclosing 13F holders (23 here).

NETFLIX INC 23 PROCTER & GAMBLE CO 23 CATERPILLAR INC 22 CHEVRON CORP NEW 22

Source: U.S. Securities and Exchange Commission (SEC) - EDGAR Form 13F-HR institutional holdings filings · Q4 2025 13F-HR discloses long US-listed equity positions of managers with $100M+ qualifying assets, filed within 45 days of period end. Short positions and most derivatives are not disclosed.

PlainFundData is rendered directly from SEC EDGAR Form 13F-HR institutional holdings filings, no number is typed in by an editor. Holder lists, concentration, and reported value on this page are aggregated live from those 13F-HR extracts. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-16.