632 tracked 13F filers disclose a position in MKSI as of the latest SEC 13F filings, a combined $14.6B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $1.5B | 6.6M | ▲+8.2% Added · +503K sh | Q1 2026 | |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | $847.0M | 3.7M | →First observed position No prior filed position | Q1 2026 | |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $692.7M | 3.0M | →First observed position No prior filed position | Q1 2026 | |
| 4 | STATE STREET CORP | $949.4M | 2.1M | ▲+3.7% Added · +77K sh | Q2 2026 | |
| 5 | JPMORGAN CHASE & CO | $441.2M | 2.1M | ▲+35% Added · +545K sh | Q1 2026 | |
| 6 | FMR LLC | $444.4M | 1.9M | ▼−40% Reduced · −1.3M sh | Q1 2026 | |
| 7 | PRICE T ROWE ASSOCIATES INC /MD/ | $390.7M | 1.7M | ▼−38% Reduced · −1.1M sh | Q1 2026 | |
| 8 | Point72 Asset Management, L.P. | $370.1M | 1.6M | ▲+157% Added · +985K sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $686.6M | 1.5M | ▼~0% Reduced · −247 sh | Q2 2026 | |
| 10 | Neuberger Berman Group LLC | $329.4M | 1.4M | ▼−1.9% Reduced · −28K sh | Q1 2026 | |
| 11 | Whale Rock Capital Management LLC | $300.3M | 1.3M | ▲New +1.3M sh | Q1 2026 | |
| 12 | CITADEL ADVISORS LLC | $217.6M | 947K | ▲+107% Added · +489K sh | Q1 2026 | |
| 13 | WESTFIELD CAPITAL MANAGEMENT CO LP | $413.0M | 929K | ▼−11% Reduced · −118K sh | Q2 2026 | |
| 14 | NORGES BANK | $147.5M | 923K | ▲+7.4% Added · +63K sh | Q4 2025 | |
| 15 | MILLENNIUM MANAGEMENT LLC | $205.5M | 894K | ▲+9.4% Added · +77K sh | Q1 2026 | |
| 16 | VICTORY CAPITAL MANAGEMENT INC | $201.9M | 879K | ▼−66% Reduced · −1.7M sh | Q1 2026 | |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $199.2M | 867K | ▼−0.5% Reduced · −4K sh | Q1 2026 | |
| 18 | DIMENSIONAL FUND ADVISORS LP | $191.9M | 835K | ▼−25% Reduced · −282K sh | Q1 2026 | |
| 19 | Bank of New York Mellon Corp | $191.2M | 832K | ▲+5.5% Added · +44K sh | Q1 2026 | |
| 20 | AQR CAPITAL MANAGEMENT LLC | $136.9M | 616K | ▲+213% Added · +420K sh | Q1 2026 | |
| 21 | PRINCIPAL FINANCIAL GROUP INC | $141.2M | 614K | ▼−20% Reduced · −151K sh | Q1 2026 | |
| 22 | FengHe Fund Management Pte. Ltd. | $258.7M | 582K | ▲+27% Added · +125K sh | Q2 2026 | |
| 23 | NORTHERN TRUST CORP | $130.8M | 569K | ▲+0.6% Added · +3K sh | Q1 2026 | |
| 24 | MORGAN STANLEY | $118.4M | 515K | ▼−13% Reduced · −75K sh | Q1 2026 | |
| 25 | SAMLYN CAPITAL, LLC | $114.1M | 497K | ▲New +497K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 10 funds opened a new position in MKSI and 22 added to an existing one, while 27 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Combined value |
|---|---|---|
| AMAZON.COM INCAMZN | 355 funds | $190.8B |
| NVIDIA CORPNVDA | 354 funds | $380.7B |
| MICROSOFT CORPMSFT | 353 funds | $252.3B |
| ALPHABET INC-CL AGOOGL | 349 funds | $158.0B |
| META PLATFORMS INC-CLASS AMETA | 341 funds | $111.6B |
| BROADCOM INCAVGO | 339 funds | $148.1B |
| APPLE INCAAPL | 336 funds | $280.6B |
| ELI LILLY & COLLY | 330 funds | $74.6B |
| JPMORGAN CHASE & COJPM | 330 funds | $61.0B |
| ADVANCED MICRO DEVICESAMD | 328 funds | $39.5B |
| ALPHABET INC-CL CGOOG | 327 funds | $120.4B |
| APPLIED MATERIALS INCAMAT | 327 funds | $33.1B |
Ranked by how many of MKSI's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Aug 14, 2026 | Lee John Tseng-Chung | President & CEO, Director | Sell (S) | 10K | $3.0M |
| Aug 3, 2026 | Williams John Edward | EVP & GM, PSD | Sell (S) | 457 | $132K |
| Jun 12, 2026 | Schreiner James Alan | EVP & COO | Sell (S) | 2K | $854K |
| Jun 12, 2026 | Schreiner James Alan | EVP & COO | Sell (S) | 812 | $281K |
| Jun 12, 2026 | Schreiner James Alan | EVP & COO | Sell (S) | 217 | $75K |
| Jun 10, 2026 | Schreiner James Alan | EVP & COO | Sell (S) | 781 | $248K |
| Jun 5, 2026 | McCarthy Michelle M | SVP & Chief Accounting Officer | Sell (S) | 2K | $767K |
| Jun 1, 2026 | Henry David Philip | EVP, Global Str Mktg & GM, MSD | Sell (S) | 6K | $1.9M |
| Jun 1, 2026 | Mora Elizabeth | Director | Sell (S) | 300 | $95K |
| May 27, 2026 | Donahue Joseph B | Director | Sell (S) | 2K | $689K |
| May 27, 2026 | COLELLA GERALD G | Director | Sell (S) | 464 | $153K |
| May 27, 2026 | COLELLA GERALD G | Director | Sell (S) | 8K | $2.7M |
| Class | 13F holders | Value held |
|---|---|---|
| MKSIthis pagecs | 632 funds | $14.6B |
| MKSI 1.25 06/01/30SDBCV | 69 funds | $2.4B |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for MKSI
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/MKSI/capital-change-brief"
Use Arkolith's capital_change_brief for MKSI. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for MKSI. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.