MKS INC. MKSI
COM · Common Stock · CUSIP 55306N104 · ISIN US55306N1046
Company in Andover, United States
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($8.3m this quarter). Holder counts are more reliable. Shares outstanding: 67.3m as of 2024-07-29, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $130.67. Options: 13 managers hold calls ($241.7m notional), 10 hold puts ($25.3m).
Trends to Q2 2024
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 357 |
| Q4 2022 | 316 |
| Q1 2023 | 325 |
| Q2 2023 | 321 |
| Q3 2023 | 324 |
| Q4 2023 | 325 |
| Q1 2024 | 343 |
| Q2 2024 | 397 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 155 | 177 |
| Q1 2023 | 140 | 155 |
| Q2 2023 | 161 | 156 |
| Q3 2023 | 168 | 135 |
| Q4 2023 | 153 | 164 |
| Q1 2024 | 177 | 142 |
| Q2 2024 | 223 | 148 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2023 | $13.1m | $12.9m | 0.99 |
| Q4 2023 | $20.9m | $11.6m | 0.56 |
| Q1 2024 | $54.1m | $19.9m | 0.37 |
| Q2 2024 | $241.7m | $25.3m | 0.10 |
Biggest buyers
| FMR LLC | Added | +431.0k |
| NOMURA HOLDINGS INC | Added | +272.1k |
| Shellback Capital, LP | New | +264.5k |
| MILLENNIUM MANAGEMENT LLC | Added | +239.1k |
| WELLS FARGO & COMPANY/MN | Added | +201.8k |
| BlackRock Inc. | Added | +201.2k |
| Balyasny Asset Management L.P. | Added | +187.6k |
| MIZUHO MARKETS AMERICAS LLC | New | +177.4k |
| WELLINGTON MANAGEMENT GROUP LLP | Added | +174.9k |
| NATIXIS ADVISORS, LLC | Added | +174.7k |
Biggest sellers
| MORGAN STANLEY | Reduced | -896.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | -717.4k |
| VICTORY CAPITAL MANAGEMENT INC | Reduced | -615.7k |
| WESTFIELD CAPITAL MANAGEMENT CO LP | Reduced | -596.0k |
| Capital International Investors | Reduced | -510.8k |
| COOKE & BIELER LP | Reduced | -406.6k |
| NORGES BANK | Reduced | -375.1k |
| DEUTSCHE BANK AG\ | Reduced | -217.6k |
| FRONTIER CAPITAL MANAGEMENT CO LLC | Reduced | -210.9k |
| Amundi | Reduced | -158.8k |
Biggest calls
| UBS Group AG | New | $118.5m907.2k shares |
| JANE STREET GROUP, LLC | Added | $68.6m525.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $16.3m124.6k shares |
| WOLVERINE TRADING, LLC | Reduced | $15.2m116.2k shares |
| Caption Management, LLC | New | $8.5m65.0k shares |
| PEAK6 Investments LLC | Reduced | $6.7m51.6k shares |
| CITADEL ADVISORS LLC | Reduced | $4.1m31.1k shares |
| Squarepoint Ops LLC | New | $2.4m18.6k shares |
| SIMPLEX TRADING, LLC | Reduced | $535.0k4.1k shares |
| GTS SECURITIES LLC | New | $404.8k3.1k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $8.9m68.4k shares |
| CITADEL ADVISORS LLC | Added | $5.2m39.7k shares |
| WOLVERINE TRADING, LLC | Added | $4.2m32.4k shares |
| Walleye Capital LLC | Added | $2.5m19.2k shares |
| SIMPLEX TRADING, LLC | Added | $1.5m11.5k shares |
| JANE STREET GROUP, LLC | New | $1.1m8.2k shares |
| Walleye Trading LLC | Reduced | $809.6k6.2k shares |
| GTS SECURITIES LLC | Added | $809.6k6.2k shares |
| PEAK6 Investments LLC | New | $274.2k2.1k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution filed 2025-10-17 | 8.8% |
| Invesco Ltd. 13G · institution new · filed 2026-02-12 | 6.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.5% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.2% |
Fell to 5% or below in the last year: JPMORGAN CHASE & CO (2.9%, 2026-09-03), VICTORY CAPITAL MANAGEMENT INC (90.0%, 2026-07-24), FMR LLC (3.3%, 2026-05-06), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC), PRICE T ROWE ASSOCIATES INC /MD/ (4.1%, 2026-02-17)
Insider purchases and sales in Q2 2024
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2022 | 2 | $147.5k | 1 | $19.3k | — |
| Q4 2022 | 0 | — | 2 | $54.6k | — |
| Q1 2023 | 0 | — | 2 | $36.8k | — |
| Q2 2023 | 0 | — | 2 | $41.3k | $41.3k |
| Q3 2023 | 0 | — | 5 | $4.7m | $1.0m |
| Q4 2023 | 1 | $170.8k | 2 | $42.3k | $42.3k |
| Q1 2024 | 0 | — | 5 | $7.6m | $2.4m |
| Q2 2024 | 0 | — | 1 | $68.8k | $68.8k |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2024-06-03 | Mora Elizabeth Director | Sold plan | $35.6k275 shares |
| 2024-04-01 | Mora Elizabeth Director | Sold plan | $33.2k250 shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2024
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.02% of their portfolio | 7.0m $909.9m | Added +68.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.11% of their portfolio | 6.8m $893.9m | Reduced -717.4k |
| BlackRock Inc. 0.02% of their portfolio | 6.6m $863.5m | Added +201.2k |
| FMR LLC 0.04% of their portfolio | 4.4m $579.8m | Added +431.0k |
| WELLINGTON MANAGEMENT GROUP LLP 0.08% of their portfolio | 3.5m $462.5m | Added +174.9k |
| VICTORY CAPITAL MANAGEMENT INC 0.43% of their portfolio | 3.3m $431.7m | Reduced -615.7k |
| JPMORGAN CHASE & CO 0.02% of their portfolio | 3.2m $418.6m | Added +134.5k |
| Capital International Investors 0.08% of their portfolio | 3.2m $412.6m | Reduced -510.8k |
| Invesco Ltd. 0.07% of their portfolio | 2.4m $318.4m | Reduced -129.1k |
| NORDEA INVESTMENT MANAGEMENT AB 0.35% of their portfolio | 2.2m $295.2m | Added +77.0k |
| STATE STREET CORP 0.01% of their portfolio | 1.9m $246.8m | Reduced -3.8k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 1.1m $146.4m | Added +35.8k |
| NEUBERGER BERMAN GROUP LLC 0.12% of their portfolio | 1.1m $140.5m | Added +78.9k |
| Bank of New York Mellon Corp 0.03% of their portfolio | 1.0m $135.7m | Reduced -78.1k |
| GOLDMAN SACHS GROUP INC 0.03% of their portfolio | 1.0m $132.5m | Added +124.4k |
| PRINCIPAL FINANCIAL GROUP INC 0.07% of their portfolio | 894.3k $116.8m | Reduced -17.0k |
| ROYCE & ASSOCIATES LP 0.98% of their portfolio | 800.4k $104.5m | Reduced -119.1k |
| Madison Asset Management, LLC 1.20% of their portfolio | 743.7k $97.1m | Added +68.7k |
| NORGES BANK 0.01% of their portfolio | 713.6k $93.2m | Reduced -375.1k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 644.8k $84.2m | Reduced -5.4k |
| MORGAN STANLEY 0.01% of their portfolio | 639.7k $83.5m | Reduced -896.5k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 617.6k $80.6m | Added +5.4k |
| Rafferty Asset Management, LLC 0.26% of their portfolio | 543.9k $71.0m | Reduced -52.0k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 497.1k $64.9m | Added +59.5k |
| BARCLAYS PLC 0.03% of their portfolio | 488.5k $63.8m | Added +95.1k |
| COOKE & BIELER LP 0.60% of their portfolio | 474.5k $62.0m | Reduced -406.6k |
| FRONTIER CAPITAL MANAGEMENT CO LLC 0.56% of their portfolio | 436.0k $56.9m | Reduced -210.9k |
| Ceredex Value Advisors LLC 1.07% of their portfolio | 432.9k $56.5m | Added +126.2k |
| Fisher Asset Management, LLC 0.02% of their portfolio | 429.5k $56.1m | Reduced -5.9k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.05% of their portfolio | 418.9k $54.7m | Added +51.5k |
| CITIGROUP INC 0.05% of their portfolio | 414.1k $54.1m | Added +118.9k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 390.8k $51.0m | Added +201.8k |
| Capital Research Global Investors 0.01% of their portfolio | 387.2k $50.6m | Unchanged |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 372.4k $48.6m | Added +17.5k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 359.0k $46.9m | Added +80.9k |
| Polaris Capital Management, LLC 2.51% of their portfolio | 358.6k $46.8m | Reduced -8.1k |
| MILLENNIUM MANAGEMENT LLC 0.04% of their portfolio | 348.0k $45.4m | Added +239.1k |
| Balyasny Asset Management L.P. 0.11% of their portfolio | 321.4k $42.0m | Added +187.6k |
| VALUE HOLDINGS MANAGEMENT CO. LLC 7.11% of their portfolio | 297.7k $38.9m | Unchanged |
| NOMURA HOLDINGS INC 0.23% of their portfolio | 273.7k $35.7m | Added +272.1k |
| Shellback Capital, LP 2.53% of their portfolio | 264.5k $34.5m | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 260.0k $33.9m | Added +82.5k |
| LOOMIS SAYLES & CO L P 0.05% of their portfolio | 250.9k $32.8m | Added +130.0k |
| NATIXIS ADVISORS, LLC 0.07% of their portfolio | 247.7k $32.3m | Added +174.7k |
| Thrivent Financial for Lutherans 0.06% of their portfolio | 245.0k $32.0m | Reduced -18.3k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.21% of their portfolio | 230.4k $30.1m | Reduced -3.1k |
| Aperture Investors, LLC 3.82% of their portfolio | 199.7k $26.1m | Added +19.4k |
| UBS Group AG 0.01% of their portfolio | 199.1k $26.0m | Added +17.3k |
| JANE STREET GROUP, LLC 0.03% of their portfolio | 182.3k $23.8m | Added +108.5k |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 179.6k $23.4m | Reduced -4.2k |
| MIZUHO MARKETS AMERICAS LLC 0.64% of their portfolio | 177.4k $23.2m | New |
| AMERICAN CENTURY COMPANIES INC 0.01% of their portfolio | 177.4k $23.2m | Reduced -90.3k |
| Nuveen Asset Management, LLC 0.01% of their portfolio | 167.7k $22.6m | Added +20.5k |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 0.65% of their portfolio | 164.7k $21.5m | Reduced -4.9k |
| RAYMOND JAMES & ASSOCIATES 0.01% of their portfolio | 159.5k $20.8m | Reduced -3.0k |
| Retirement Systems of Alabama 0.08% of their portfolio | 154.1k $20.1m | Reduced -984 |
| Polar Capital Holdings Plc 0.12% of their portfolio | 151.4k $19.8m | Reduced -1.4k |
| GREAT LAKES ADVISORS, LLC 0.17% of their portfolio | 150.0k $19.6m | Added +74.6k |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 149.6k $19.5m | Reduced -36.1k |
| PointState Capital LP 0.55% of their portfolio | 146.2k $19.1m | Unchanged |
| Harvey Partners, LLC 2.35% of their portfolio | 145.5k $19.0m | Reduced -9.5k |
| First Eagle Investment Management, LLC 0.04% of their portfolio | 141.2k $18.4m | Added +10.0k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 135.0k $17.6m | Reduced -217.6k |
| Kodai Capital Management LP 0.34% of their portfolio | 134.9k $17.6m | New |
| Swiss National Bank 0.01% of their portfolio | 131.9k $17.2m | Added +6.5k |
| Tyro Capital Management LLC 7.42% of their portfolio | 125.3k $16.4m | Added +65.5k |
| NEEDHAM INVESTMENT MANAGEMENT LLC 1.32% of their portfolio | 123.0k $16.1m | Reduced -50.0k |
| Corient Private Wealth LP 0.03% of their portfolio | 121.4k $15.9m | Added +50.2k |
| Amundi 0.01% of their portfolio | 119.3k $16.1m | Reduced -158.8k |
| California Public Employees Retirement System 0.01% of their portfolio | 116.8k $15.3m | Added +332 |
| BESSEMER GROUP INC 0.03% of their portfolio | 114.7k $15.0m | Added +36.6k |
| Legal & General Group Plc 0.00% of their portfolio | 99.3k $13.0m | Added +2.5k |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 97.9k $12.8m | Reduced -68.7k |
| Blue Grotto Capital, LLC 2.49% of their portfolio | 95.0k $12.4m | Reduced -20.0k |
| FIRST TRUST ADVISORS LP 0.01% of their portfolio | 89.3k $11.7m | Added +29.9k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 88.0k $11.5m | Reduced -3.2k |
| SOROS FUND MANAGEMENT LLC 0.25% of their portfolio | 85.9k $11.2m | New |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 82.5k $10.8m | Added +4.6k |
| STRS OHIO 0.04% of their portfolio | 82.4k $10.8m | Reduced -2.4k |
| MACQUARIE GROUP LTD 0.01% of their portfolio | 81.7k $10.7m | Added +61.3k |
| Corebridge Financial, Inc. 0.06% of their portfolio | 80.0k $10.4m | First filing |
| Leith Wheeler Investment Counsel Ltd. 0.88% of their portfolio | 77.8k $10.2m | Added +570 |
| HSBC HOLDINGS PLC 0.01% of their portfolio | 76.8k $10.1m | Added +74.9k |
| EAGLE ASSET MANAGEMENT INC 0.05% of their portfolio | 75.0k $9.7m | Reduced -2.0k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 74.0k $9.7m | Reduced -2.9k |
| FIRST NATIONAL BANK OF OMAHA 0.63% of their portfolio | 73.7k $9.6m | Added +2.7k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.02% of their portfolio | 68.0k $8.9m | Reduced -2.9k |
| Gotham Asset Management, LLC 0.11% of their portfolio | 67.7k $8.8m | Added +30.7k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 65.8k $8.6m | Added +1.4k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 60.9k $8.0m | New |
| NISSAY ASSET MANAGEMENT CORP /JAPAN 0.05% of their portfolio | 60.0k $7.8m | Added +8.6k |
| STIFEL FINANCIAL CORP 0.01% of their portfolio | 59.5k $7.8m | Added +1.3k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.02% of their portfolio | 57.9k $7.6m | Added +8.6k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.01% of their portfolio | 54.3k $7.1m | Reduced -541 |
| CANADA LIFE ASSURANCE Co 0.01% of their portfolio | 53.7k $7.0m | Added +7.2k |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 0.07% of their portfolio | 51.8k $6.8m | Reduced -1.3k |
| LAZARD ASSET MANAGEMENT LLC 0.01% of their portfolio | 50.3k $6.6m | Reduced -15.4k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 48.3k $6.3m | New |
| GHP Investment Advisors, Inc. 0.31% of their portfolio | 46.9k $6.1m | Added +180 |
| SEI INVESTMENTS CO 0.01% of their portfolio | 46.2k $6.0m | Added +877 |