# MKS INC. COM

MKS INC. COM is a security (CUSIP 55306N104) tracked across SEC portfolio filings. 706 institutional managers reported $14.4B on Form 13F as of 2026-06-30; 69 registered fund positions totaling $2.4B via N-PORT as of 2026-05-31.

## Summary

- Issuer: MKS INC.
- Class: COM
- CUSIP: 55306N104
- Asset category: EC
- 13F holders: 706
- 13F value: $14.4B
- 13F period: 2026-06-30
- N-PORT fund positions: 69
- N-PORT value: $2.4B
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 706 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $1.5B | 6,641,730 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $1.2B | 7,487,305 |
| STATE STREET CORP | BOSTON, MA | $472.9M | 2,057,732 |
| Capital International Investors | Los Angeles, CA | $452.4M | 1,968,770 |
| FMR LLC | BOSTON, MA | $444.4M | 1,933,843 |
| JPMORGAN CHASE & CO | NEW YORK, NY | $441.2M | 2,096,342 |
| WELLINGTON MANAGEMENT GROUP LLP | BOSTON, MA | $421.3M | 1,833,137 |
| [Point72 Asset Management, L.P.](https://search.stillhousedata.com/firm/283077) | Stamford, CT | $370.3M | 1,610,331 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $353.8M | 1,539,319 |
| NEUBERGER BERMAN GROUP LLC | NEW YORK, NY | $329.4M | 1,433,529 |
| UBS Group AG | Zurich, V8 | $307.8M | 432,130 |
| [Whale Rock Capital Management LLC](https://search.stillhousedata.com/firm/140746) | Boston, MA | $300.3M | 1,306,724 |
| Capital World Investors | LOS ANGELES, CA | $293.5M | 1,277,200 |
| Bank of New York Mellon Corp | NEW YORK, NY | $292.9M | 658,544 |
| [WESTFIELD CAPITAL MANAGEMENT CO LP](https://search.stillhousedata.com/firm/146990) | BOSTON, MA | $240.6M | 1,046,763 |

## Top fund holders (N-PORT)

_Showing 15 of 69 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [SMALLCAP World Fund Inc](https://search.stillhousedata.com/fund/S000009599) | SMALLCAP World Fund Inc | $588.1M | 72.57% |
| State Street SPDR S&P MidCap 400SM ETF Trust | SPDR S&P MIDCAP 400 ETF TRUST | $465.4M | 192.16% |
| [Invesco Small Cap Value Fund](https://search.stillhousedata.com/fund/S000027837) | AIM Sector Funds (Invesco Sector Funds) | $325.3M | 302.52% |
| [Growth Fund of America](https://search.stillhousedata.com/fund/S000009228) | Growth Fund of America | $197.1M | 5.46% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $172.2M | 21.13% |
| [JPMorgan Mid Cap Value Fund](https://search.stillhousedata.com/fund/S000004475) | J.P. Morgan Fleming Mutual Fund Group, Inc. | $164.0M | 151.06% |
| [T. Rowe Price Mid-Cap Value Fund, Inc.](https://search.stillhousedata.com/fund/S000002103) | T. ROWE PRICE MID-CAP VALUE FUND, INC. | $118.8M | 80.36% |
| [Fidelity Leveraged Company Stock Fund](https://search.stillhousedata.com/fund/S000007200) | Fidelity Securities Fund | $62.5M | 151.88% |
| [T. Rowe Price Science & Technology Fund, Inc.](https://search.stillhousedata.com/fund/S000002119) | T. ROWE PRICE SCIENCE & TECHNOLOGY FUND, INC. | $45.1M | 41.98% |
| [AB DISCOVERY GROWTH FUND, INC.](https://search.stillhousedata.com/fund/S000010117) | AB DISCOVERY GROWTH FUND, INC. | $41.4M | 153.58% |
| Neuberger Next Generation Connectivity Fund Inc. | Neuberger Next Generation Connectivity Fund Inc. | $23.2M | 173.86% |
| [Fidelity Advisor Stock Selector Mid Cap Fund](https://search.stillhousedata.com/fund/S000005114) | Fidelity Advisor Series I | $20.6M | 81.12% |
| [SA Wellington Capital Appreciation Portfolio](https://search.stillhousedata.com/fund/S000007949) | ANCHOR SERIES TRUST | $18.2M | 90.56% |
| [LORD ABBETT DEVELOPING GROWTH FUND INC](https://search.stillhousedata.com/fund/S000006834) | LORD ABBETT DEVELOPING GROWTH FUND, INC. | $18.0M | 81.14% |
| [Bridge Builder Tax Managed Small/Mid Cap Fund](https://search.stillhousedata.com/fund/S000076295) | Bridge Builder Trust | $16.6M | 54.90% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/55306n104.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.