MKSMKSI
13F holders, Q1 2026 (March 31)620holders +105
151new positions
51sold out
12famous investors
$228.73avg. 13F price*
At the end of Q1 2026, 620 institutions reported holding MKS Inc. (MKSI) in their 13F filings, up 105 from Q4 2025. 151 opened new positions and 51 sold out. The largest holders were BlackRock, Inc. ($1.5B), Invesco Ltd. ($855.2M) and Vanguard Portfolio Management LLC ($847.0M). 12 famous investors held it, including Alex Sacerdote (3.9% of Whale Rock Capital Management's portfolio), Steve Cohen (0.7% of Point72 Asset Management's portfolio) and Israel Englander (0.2% of Millennium Management's portfolio).
- Company
- MKS Inc.
- CUSIP
- 55306N104
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 151 | $1.9B |
| Exits | 51 | $190.5M |
All 13F filers, Q4 2025 → Q1 2026: 14,386,810 shares bought and 14,804,648 shares sold, net −417,838 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 620 holders
| BlackRock, Inc. | 0.03% | Add +8.2% | 6,641,730 | $1.5B |
| Invesco Ltd. | 0.08% | Reduce -3.5% | 3,721,459 | $855.2M |
| Vanguard Portfolio Management LLC | 0.04% | — | 3,685,493 | $847.0M |
| Vanguard Capital Management LLC | 0.02% | — | 3,014,201 | $692.7M |
| State Street Corp. | 0.02% | Add +2.0% | 2,057,732 | $472.9M |
| Capital International Investors | 0.11% | Reduce -39.2% | 1,968,770 | $452.4M |
| FMR LLC | 0.02% | Reduce -39.5% | 1,933,843 | $444.4M |
| JPMorgan Chase & Co. | 0.03% | Add +35.1% | 2,096,342 | $441.2M |
| Wellington Management Group LLP | 0.08% | Reduce -28.2% | 1,833,137 | $421.3M |
| T. Rowe Price Associates Inc. | 0.05% | Reduce -38.3% | 1,700,148 | $390.7M |
| Point72 Asset Management | 0.68% | Add +157.3% | 1,610,331 | $370.1M |
| Geode Capital Management, LLC | 0.02% | Add +22.8% | 1,539,319 | $353.8M |
| Aspex Management (HK) Ltd | 5.13% | New | 1,538,789 | $353.6M |
| Neuberger Berman Group LLC | 0.25% | Reduce -1.9% | 1,433,529 | $329.4M |
| Whale Rock Capital Management | 3.88% | New | 1,306,724 | $300.3M |
| Capital World Investors | 0.04% | New | 1,277,200 | $293.5M |
| Westfield Capital Management Co. LP | 1.01% | Add +24.6% | 1,046,763 | $240.6M |
| Citadel Advisors | 0.16% | Add +106.8% | 947,032 | $217.6M |
| Millennium Management | 0.16% | Add +9.4% | 894,369 | $205.5M |
| Victory Capital Management Inc. | 0.13% | Reduce -65.7% | 878,758 | $201.9M |
| Charles Schwab Investment Management Inc. | 0.03% | Reduce -0.5% | 866,647 | $199.2M |
| Dimensional Fund Advisors LP | 0.04% | Reduce -25.3% | 835,345 | $191.9M |
| Bank of New York Mellon Corp | 0.04% | Add +5.5% | 832,150 | $191.2M |
| Principal Financial Group Inc. | 0.08% | Reduce -19.8% | 614,230 | $141.2M |
| AQR Capital Management | 0.06% | Add +213.5% | 616,497 | $136.9M |
| Northern Trust Corp. | 0.02% | Add +0.6% | 569,224 | $130.8M |
| Morgan Stanley | 0.01% | Reduce -12.8% | 515,063 | $118.4M |
| Samlyn Capital, LLC | 1.96% | New | 496,685 | $114.1M |
| Franklin Resources Inc. | 0.03% | Reduce -54.3% | 475,893 | $109.4M |
| Bank of America Corp. | 0.01% | Reduce -3.4% | 463,709 | $106.6M |
| FengHe Fund Management Pte. Ltd. | 14.49% | New | 456,329 | $104.9M |
| UBS Group AG | 0.02% | Add +33.5% | 432,130 | $99.3M |
| Vanguard Fiduciary Trust Co. | 0.02% | — | 417,114 | $95.9M |
| Balyasny Asset Management L.P. | 0.19% | Reduce -20.4% | 407,395 | $93.6M |
| Royce & Associates LP | 0.92% | Reduce -34.5% | 403,670 | $92.8M |
| Manufacturers Life Insurance Company, The | 0.08% | Reduce -34.0% | 400,319 | $92.0M |
| Nuveen, LLC | 0.02% | Add +10.8% | 378,158 | $86.9M |
| Blue Grotto Capital, LLC | 9.93% | Reduce -9.8% | 375,000 | $86.2M |
| Contour Asset Management LLC | 2.80% | New | 374,868 | $86.1M |
| Madison Asset Management, LLC | 0.96% | Reduce -63.3% | 338,336 | $77.8M |
| Raymond James Financial Inc. | 0.02% | Add +35.5% | 337,962 | $75.8M |
| Tremblant Capital Group | 2.44% | New | 329,786 | $75.8M |
| Nordea Investment Management AB | 0.07% | Reduce -45.6% | 326,308 | $71.5M |
| TimesSquare Capital Management, LLC | 1.12% | New | 288,165 | $66.2M |
| Summit Partners Public Asset Management, LLC | 3.00% | Reduce -26.0% | 282,206 | $64.9M |
| American Century Companies Inc. | 0.03% | Reduce -29.3% | 280,965 | $64.6M |
| Two Sigma Investments, LP | 0.06% | Add +849.3% | 278,687 | $64.0M |
| Nomura Holdings Inc. | 0.52% | Reduce -26.0% | 269,356 | $61.9M |
| Quantinno Capital Management LP | 0.10% | Add +12.5% | 259,749 | $59.7M |
| Amundi | 0.02% | Add +81.7% | 254,748 | $58.5M |
| Defiance ETFs, LLC | 0.83% | Add +5.3% | 250,616 | $57.6M |
| Penserra Capital Management LLC | 0.68% | Add +5.3% | 250,616 | $57.6M |
| Park West Asset Management LLC | 5.06% | Reduce -10.5% | 249,240 | $57.3M |
| Goldman Sachs Group Inc. | 0.01% | Add +36.5% | 245,626 | $56.4M |
| Value Holdings Management Co. LLC | 9.13% | Reduce -17.7% | 245,050 | $56.3M |
| Harvey Partners, LLC | 4.54% | Reduce -15.8% | 243,396 | $55.9M |
| Jane Street Group, LLC | 0.06% | Reduce -36.5% | 243,253 | $55.9M |
| Wells Fargo & Company | 0.01% | Reduce -37.9% | 243,038 | $55.9M |
| Systematic Financial Management LP | 1.28% | Reduce -8.6% | 242,063 | $55.6M |
| Natixis Advisors, LLC | 0.07% | Reduce -55.6% | 232,006 | $53.3M |
| Alliancebernstein L.P. | 0.02% | Add +271.5% | 319,921 | $51.1M |
| Jones Financial Companies LLLP | 0.02% | Add +9962.1% | 223,782 | $49.9M |
| Dendur Capital LP | 3.68% | New | 214,500 | $49.3M |
| Cooke & Bieler LP | 0.55% | Reduce -78.3% | 210,048 | $48.3M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.01% | Add +1.9% | 203,920 | $46.9M |
| Gotham Asset Management | 0.14% | Reduce -13.2% | 195,403 | $44.9M |
| Handelsbanken Fonder AB | 0.15% | Add +21.5% | 192,500 | $44.2M |
| Nomura Asset Management International Inc. | 0.07% | Add +23.5% | 186,005 | $42.7M |
| Rhumbline Advisers | 0.04% | Add +2.2% | 179,960 | $41.4M |
| Mizuho Markets Cayman LP | 2.16% | No change | 175,000 | $40.2M |
| LPL Financial LLC | 0.01% | Add +1369.1% | 174,975 | $40.2M |
| Ceredex Value Advisors LLC | 1.23% | Reduce -9.2% | 169,475 | $38.9M |
| Voloridge Investment Management, LLC | 0.15% | New | 166,066 | $38.2M |
| Sora Investors LLC | 3.44% | New | 162,762 | $37.4M |
| Barclays PLC | 0.01% | Reduce -52.5% | 161,499 | $37.1M |
| Frontier Capital Management Co. LLC | 0.38% | Reduce -70.7% | 161,250 | $37.1M |
| SummitTX Capital, L.P. | 1.18% | Reduce -21.8% | 160,909 | $37.0M |
| Retirement Systems of Alabama | 0.12% | Add +1.1% | 158,446 | $36.4M |
| Royal Bank of Canada | 0.01% | Reduce -50.6% | 153,003 | $35.2M |
| Delta Global Management LP | 2.84% | Reduce -53.8% | 151,117 | $34.7M |
| BNP Paribas Financial Markets | 0.02% | Reduce -7.4% | 148,697 | $34.2M |
| Cramer Rosenthal McGlynn LLC | 2.50% | Reduce -35.7% | 148,385 | $34.1M |
| Thrivent Financial for Lutherans | 0.06% | Add +64.0% | 143,677 | $33.0M |
| Polaris Capital Management, LLC | 2.53% | Reduce -49.2% | 134,700 | $31.0M |
| Deutsche Bank AG | 0.01% | Reduce -0.7% | 133,050 | $30.6M |
| Swiss National Bank | 0.02% | Add +0.3% | 132,900 | $30.5M |
| Loomis Sayles & Co. L P | 0.04% | Reduce -31.0% | 127,131 | $29.2M |
| California Public Employees Retirement System | 0.02% | Add +7.8% | 123,288 | $28.3M |
| Light Street Capital Management, LLC | 5.65% | Add +524.4% | 122,264 | $28.1M |
| D. E. Shaw & Co. | 0.02% | New | 120,173 | $27.6M |
| Needham Investment Management LLC | 1.41% | Reduce -8.1% | 120,000 | $27.6M |
| Bessemer Group Inc. | 0.04% | Reduce -25.4% | 117,851 | $27.1M |
| Bank of Montreal | 0.01% | Reduce -28.9% | 117,132 | $26.9M |
| Talos Eurisko Asset Management LP | 4.48% | New | 114,011 | $26.2M |
| SG Americas Securities, LLC | 0.03% | Add +477.0% | 110,343 | $25.4M |
| Daiwa Securities Group Inc. | 0.07% | Add +20146.0% | 107,304 | $24.7M |
| Renaissance Technologies | 0.04% | New | 103,603 | $23.8M |
| Sei Investments Co. | 0.02% | Reduce -19.7% | 101,214 | $23.3M |
| Federated Hermes, Inc. | 0.04% | Add +0.8% | 100,125 | $23.0M |
| Ameriprise Financial Inc. | 0.01% | Reduce -30.4% | 99,188 | $22.8M |
"% of holder's portfolio" is MKSI's weight in each manager's 13F, not the share of MKS Inc. the manager owns.