Macom Technology Solutions Holdings, Inc. (MTSI) Shareholders & Insider Trades
Macom Technology Solutions shareholders at a glance
The largest holder of Macom Technology Solutions stock is Fidelity Management & Research Co. LLC, with 10.5 million shares (14.13% of the company), worth about $2.78 billion as of September 25, 2026. The 10 largest holders together own 56.1%.
In Q2 2026, 692 institutional holdings reports listed shares worth $27.80 billion.
Insiders reported 50 transactions in the last two years: 26 sales worth $290.09 million and no purchases. The newest one on file is from November 7, 2025 (Kober John F Iii, Chief Financial Officer).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through November 7, 2025.
Macom Technology Solutions Holdings, Inc.
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest Macom Technology Solutions shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Fidelity Management & Research Co. LLC | 10.5 million | 14.13% | $2.8B |
| BlackRock Advisors LLC | 8.9 million | 11.96% | $2.3B |
| Estate of Ocampo John L | 4.9 million | 6.56% | $1.3B |
| Vanguard Portfolio Management LLC | 3.6 million | 4.84% | $951.0M |
| Vanguard Capital Management LLC | 3.1 million | 4.12% | $809.0M |
| T. Rowe Price Investment Management, Inc. | 2.9 million | 3.83% | $752.0M |
| State Street Corporation | 2.3 million | 3.04% | $597.0M |
| Invesco Advisers, Inc. | 2.1 million | 2.89% | $567.0M |
| JPMorgan Investment Management, Inc. | 2.1 million | 2.85% | $561.0M |
| Geode Capital Management LLC | 1.4 million | 1.89% | $372.0M |
As of September 25, 2026.
Macom Technology Solutions institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 692 | – | $27.8B |
| Q1 2026 | 534 | 74.1 million | $16.4B |
| Q4 2025 | 483 | 74.8 million | $12.8B |
| Q3 2025 | 457 | 71.1 million | $8.9B |
| Q2 2025 | 441 | 66.7 million | $9.6B |
| Q1 2025 | 408 | 63.8 million | $6.5B |
| Q4 2024 | 403 | 62.4 million | $8.1B |
| Q3 2024 | 355 | 64.2 million | $7.1B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Macom Technology Solutions insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Kober John F Iii | Nov 7, 2025 | Chief Financial Officer | Sale at price 163.65 - 169.91 per share. | $3.1M |
| Daly Stephen G | Nov 6, 2025 | Chief Executive Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Kober John F Iii | Nov 6, 2025 | Chief Financial Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Struble Wayne Mack | Nov 6, 2025 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Hwang Donghyun Thomas | Nov 6, 2025 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Dennehy Robert B | Nov 6, 2025 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Roth Ambra R | Nov 6, 2025 | General Counsel | Stock Award(Grant) at price 0.00 per share. | – |
| Ocampo John L | Oct 29, 2025 | Beneficial Owner of more than 10% of a Class of Security | Sale at price 148.02 - 150.01 per share. | $19.7M |
| Kober John F Iii | Oct 28, 2025 | Chief Financial Officer | Sale at price 145.10 - 146.01 per share. | $217,852 |
| Daly Stephen G | Oct 28, 2025 | Chief Executive Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Kober John F Iii | Oct 28, 2025 | Chief Financial Officer | Stock Award(Grant) at price 0.00 per share. | – |
| Struble Wayne Mack | Oct 28, 2025 | Officer | Stock Award(Grant) at price 0.00 per share. | – |
Newest 12 of 50 insider transactions in the last two years.
Questions and answers
Who owns the most Macom Technology Solutions stock?
Fidelity Management & Research Co. LLC, with 14.13% of the company (as of September 25, 2026). Next: BlackRock Advisors LLC (11.96%) and Estate of Ocampo John L (6.56%).
How many institutions own Macom Technology Solutions stock?
692 institutional holdings reports listed Macom Technology Solutions shares in Q2 2026 worth $27.80 billion.
Are Macom Technology Solutions insiders buying or selling the stock?
In the last two years insiders reported 26 sales and no purchases (50 transactions in all); the newest on file is from November 7, 2025.
