Merck & Co., Inc.
MRK- Exchange
- NYSE
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0000310158
In the last 90 days, Merck & Co., Inc. insiders filed 0 open-market purchases and 7 sales; 3,854 institutions reported holding it in 13F filings for Q2 2026, worth $254.3B in total; 4 superinvestors hold it, including Harris Associates (Oakmark) and Fairfax Financial.
13F holders, Q2 2026
Institutional positions in Merck & Co., Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 3,854
- +96 vs. Q1 2026
- Shares held
- 1.98B
- +52.6M (+2.7%) vs. Q1 2026
- Total value
- $254.3B
- +$23.0B (+9.9%) vs. Q1 2026
- New holders
- 214
- 1,635 more added
- Sold out
- 118
- 1,508 more reduced
54 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MRK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 3,854 | $254.3B |
| Q1 2026 | 3,812 | $231.9B |
| Q4 2025 | 3,674 | $206.6B |
| Q3 2025 | 3,319 | $159.8B |
| Q2 2025 | 3,337 | $155.9B |
| Q1 2025 | 3,459 | $177.7B |
| Q4 2024 | 3,618 | $196.9B |
| Q3 2024 | 3,502 | $221.8B |
| Q2 2024 | 3,558 | $242.3B |
| Q1 2024 | 3,547 | $256.9B |
| Q4 2023 | 3,444 | $211.6B |
| Q3 2023 | 3,222 | $197.7B |
| Q2 2023 | 3,262 | $222.8B |
| Q1 2023 | 3,188 | $205.1B |
| Q4 2022 | 3,244 | $212.2B |
| Q3 2022 | 2,997 | $162.7B |
| Q2 2022 | 3,020 | $171.5B |
| Q1 2022 | 2,962 | $152.1B |
| Q4 2021 | 2,910 | $142.2B |
| Q3 2021 | 2,658 | $138.8B |
| Q2 2021 | 2,684 | $144.3B |
| Q1 2021 | 2,693 | $143.2B |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Merck & Co., Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| TCW Group Inc | 845,538 | $108.7M | 0.73% | −16,921−2.0% | Reduced |
| Mercer Global Advisors Inc | 845,459 | $108.6M | 0.13% | +59,522+7.6% | Added |
| Lansforsakringar Fondforvaltning AB (publ) | 830,507 | $106.7M | 0.48% | +25,680+3.2% | Added |
| Temasek Holdings (Private) Ltd | 816,101 | $104.9M | 0.29% | +816,101 | New |
| Guggenheim Capital LLC | 811,080 | $104.2M | 0.67% | +16,212+2.0% | Added |
| Teacher Retirement System of Texas | 805,085 | $103.5M | 0.28% | +145,208+22.0% | Added |
| State of New Jersey Common Pension Fund D | 799,427 | $102.7M | 0.35% | −48,822−5.8% | Reduced |
| Ieq Capital, LLC | 799,214 | $102.7M | 0.47% | −142,139−15.1% | Reduced |
| Donaldson Capital Management, LLC | 798,673 | $102.6M | 2.94% | +13,513+1.7% | Added |
| HRT Financial LP | 798,048 | $102.5M | 0.19% | +655,319+459.1% | Added |
| Resona Asset Management Co.,Ltd. | 793,749 | $102.1M | 0.48% | −62,999−7.4% | Reduced |
| Compagnie Lombard Odier SCmA | 790,796 | $101.6M | 1.10% | −1,781−0.2% | Reduced |
| Tredje AP-fonden | 786,562 | $101.1M | 0.46% | −54,886−6.5% | Reduced |
| J. Safra Sarasin Holding AG | 987,390 | $100.9M | 1.45% | +26,676+2.8% | Added |
| First Financial Bankshares Inc | 752,788 | $96.7M | 1.81% | +9,187+1.2% | Added |
| Bahl & Gaynor Inc | 742,880 | $95.5M | 0.44% | −7,614−1.0% | Reduced |
| Midwest Trust Co | 738,473 | $94.9M | 1.08% | −9,145−1.2% | Reduced |
| Sarasin & Partners LLP | 736,662 | $94.7M | 1.11% | −49,029−6.2% | Reduced |
| Migdal Insurance & Financial Holdings Ltd. | 730,035 | $94.3M | 0.60% | +420,033+135.5% | Added |
| Mn Services Vermogensbeheer B.V. | 720,421 | $92.6M | 0.69% | −253,200−26.0% | Reduced |
| Nykredit A/S | 718,471 | $92.3M | 0.35% | +718,471 | New |
| ING Groep NV | 717,830 | $92.2M | 0.45% | +76,121+11.9% | Added |
| Old Republic International Corporation | 705,600 | $90.7M | 3.40% | 00.0% | Unchanged |
| Czech National Bank | 703,007 | $90.3M | 0.49% | +27,039+4.0% | Added |
| Sumitomo Mitsui DS Asset Management Company, Ltd | 694,815 | $89.3M | 0.62% | +3,309+0.5% | Added |
| Arizona State Retirement System | 686,042 | $88.2M | 0.44% | +6,296+0.9% | Added |
| FIL Ltd | 678,957 | $87.2M | 0.06% | +81,605+13.7% | Added |
| Fort Washington Investment Advisors Inc | 666,931 | $85.7M | 0.43% | +7,080+1.1% | Added |
| OrbiMed Advisors LLC | 663,400 | $85.2M | 1.61% | 00.0% | Unchanged |
| State of Michigan Retirement System | 663,390 | $85.2M | 0.38% | −59,700−8.3% | Reduced |
| Nisa Investment Advisors, LLC | 649,381 | $84.0M | 0.26% | −44,160−6.4% | Reduced |
| Clark Capital Management Group, Inc. | 652,471 | $83.8M | 0.46% | +12,199+1.9% | Added |
| Calamos Advisors LLC | 650,503 | $83.6M | 0.30% | −127,160−16.4% | Reduced |
| Cacti Asset Management LLC | 645,299 | $82.9M | 4.16% | 00.0% | Unchanged |
| Atalanta Sosnoff Capital, LLC | 642,053 | $82.5M | 1.45% | +339,926+112.5% | Added |
| Zurich Insurance Group Ltd | 631,197 | $81.1M | 0.56% | −336,401−34.8% | Reduced |
| Boston Partners | 629,240 | $80.8M | 0.07% | −12,526−2.0% | Reduced |
| Holocene Advisors, LP | 628,000 | $80.7M | 0.18% | +55,533+9.7% | Added |
| Virginia Retirement Systems Et Al | 619,138 | $79.6M | 0.48% | −99,100−13.8% | Reduced |
| Perpetual Ltd | 609,565 | $78.3M | 1.12% | +15,122+2.5% | Added |
| SRS Capital Advisors, Inc. | 608,608 | $78.2M | 0.52% | +304,752+100.3% | Added |
| Pathstone Holdings, LLC | 599,421 | $77.1M | 0.22% | +118,786+24.7% | Added |
| Harvest Portfolios Group Inc. | 592,151 | $76.1M | 1.07% | −34,651−5.5% | Reduced |
| Whittier Trust Co | 592,471 | $75.1M | 0.74% | +7,049+1.2% | Added |
| Empowered Funds, LLC | 576,918 | $74.1M | 0.39% | +69,103+13.6% | Added |
| Erste Asset Management GmbH | 571,075 | $73.9M | 0.57% | +180,219+46.1% | Added |
| Capitolis Liquid Global Markets LLC | 571,730 | $73.5M | 0.32% | +347,900+155.4% | Added |
| IFM Investors Pty Ltd | 571,235 | $73.4M | 0.49% | +48,656+9.3% | Added |
| Compass Capital Management, Inc | 567,099 | $72.9M | 4.39% | −22,669−3.8% | Reduced |
| Samlyn Capital, LLC | 565,755 | $72.7M | 1.21% | −160,726−22.1% | Reduced |
| Clearbridge Investments, LLC | 565,690 | $72.7M | 0.06% | −12,096−2.1% | Reduced |
| MetLife Investment Management | 565,110 | $72.6M | 0.33% | −14,894−2.6% | Reduced |
| Peapack Gladstone Financial Corp | 563,132 | $72.4M | 0.83% | −1,577−0.3% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 562,388 | $72.3M | 0.30% | +55,794+11.0% | Added |
| Millennium Management LLC | 561,302 | $72.1M | 0.05% | −1,409,389−71.5% | Reduced |
| Spears Abacus Advisors LLC | 557,332 | $71.6M | 1.27% | −240,891−30.2% | Reduced |
| Douglas Lane & Associates, LLC | 552,155 | $71.0M | 0.96% | −9,737−1.7% | Reduced |
| D.A. Davidson & Co. | 552,007 | $70.9M | 0.39% | −20,586−3.6% | Reduced |
| Omers Administration Corp | 547,569 | $70.4M | 0.42% | −1,051,358−65.8% | Reduced |
| Aristotle Atlantic Partners, LLC | 546,486 | $70.2M | 2.91% | −6,000−1.1% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 545,517 | $70.1M | 0.34% | −32,652−5.6% | Reduced |
| Daiwa Securities Group Inc. | 543,300 | $69.8M | 0.16% | +29,548+5.8% | Added |
| Kornitzer Capital Management Inc | 539,543 | $69.3M | 1.45% | −4,618−0.8% | Reduced |
| Employees Provident Fund Board | 535,502 | $68.8M | 0.39% | −1,359,663−71.7% | Reduced |
| Gotham Asset Management, LLC | 528,937 | $68.0M | 0.16% | +22,386+4.4% | Added |
| 1832 Asset Management L.P. | 520,333 | $66.9M | 0.08% | −96,507−15.6% | Reduced |
| Radnor Capital Management, LLC | 518,900 | $66.7M | 9.36% | −543−0.1% | Reduced |
| Retirement Systems of Alabama | 518,855 | $66.7M | 0.20% | −8,224−1.6% | Reduced |
| ProShare Advisors LLC | 517,507 | $66.5M | 0.10% | −7,788−1.5% | Reduced |
| RNC Capital Management LLC | 517,240 | $66.5M | 2.74% | +2,900+0.6% | Added |
| Federation des caisses Desjardins du Quebec | 514,231 | $66.1M | 0.20% | −56,648−9.9% | Reduced |
| O'Shaughnessy Asset Management, LLC | 509,542 | $65.5M | 0.31% | −86,926−14.6% | Reduced |
| Banque Pictet & Cie SA | 503,429 | $64.7M | 0.67% | −9,702−1.9% | Reduced |
| Mediolanum International Funds Ltd | 495,800 | $64.1M | 0.55% | −17,988−3.5% | Reduced |
| Ofi Invest Asset Management | 569,512 | $64.1M | 0.64% | −60,545−9.6% | Reduced |
| Sanibel Captiva Trust Company, Inc. | 496,731 | $63.8M | 1.59% | −6,350−1.3% | Reduced |
| Oppenheimer Asset Management Inc. | 492,922 | $63.3M | 0.66% | +850+0.2% | Added |
| Fred Alger Management, LLC | 487,735 | $63.0M | 0.21% | +166,734+51.9% | Added |
| Rockland Trust Co | 490,049 | $63.0M | 2.47% | −44,914−8.4% | Reduced |
| Pinnacle Associates Ltd | 486,775 | $62.6M | 0.68% | +1,019+0.2% | Added |
| Xponance, Inc. | 473,483 | $60.8M | 0.37% | +392+0.1% | Added |
| Cambridge Investment Research Advisors, Inc. | 469,217 | $60.3M | 0.14% | +57,875+14.1% | Added |
| BI Asset Management Fondsmaeglerselskab A/S | 468,644 | $59.5M | 0.47% | −659,086−58.4% | Reduced |
| SRB Corp | 463,298 | $59.5M | 3.20% | 00.0% | Unchanged |
| PensionDanmark Pensionsforsikringsaktieselskab | 462,927 | $59.5M | 0.49% | +54,260+13.3% | Added |
| GWM Advisors LLC | 455,515 | $58.5M | 0.17% | +41,950+10.1% | Added |
| Capital International Inc | 454,397 | $58.4M | 0.41% | +448,389+7,463.2% | Added |
| Alps Advisors Inc | 452,664 | $58.2M | 0.27% | +24,904+5.8% | Added |
| AIA Group Ltd | 449,725 | $57.8M | 0.73% | +74,001+19.7% | Added |
| Tocqueville Asset Management L.P. | 447,832 | $57.5M | 0.76% | +1,320+0.3% | Added |
| Fukoku Mutual Life Insurance Co | 447,246 | $57.5M | 3.35% | 00.0% | Unchanged |
| Boston Trust Walden Corp | 447,062 | $57.4M | 0.44% | −6,132−1.4% | Reduced |
| MML Investors Services, LLC | 444,129 | $57.1M | 0.12% | +63,932+16.8% | Added |
| B. Metzler seel. Sohn & Co. AG | 443,208 | $57.0M | 0.49% | −11,777−2.6% | Reduced |
| Nichols & Pratt Advisers LLP | 442,799 | $56.9M | 3.46% | −3,840−0.9% | Reduced |
| Saudi Central Bank | 440,465 | $56.3M | 0.74% | +81,454+22.7% | Added |
| Amalgamated Bank | 434,306 | $55.8M | 0.39% | −24,324−5.3% | Reduced |
| Gateway Investment Advisers LLC | 433,052 | $55.6M | 0.55% | −10,795−2.4% | Reduced |
| USS Investment Management Ltd | 432,343 | $55.5M | 0.22% | −1,688−0.4% | Reduced |
| QRG Capital Management, Inc. | 428,993 | $55.1M | 0.45% | −70,739−14.2% | Reduced |