Vicor Corporation (VICR) Shareholders & Insider Trades
Vicor shareholders at a glance
The largest holder of Vicor stock is Patrizio Vinciarelli24.76 %, with 8.5 million shares (24.76% of the company), worth about $1.60 billion as of September 25, 2026. The 10 largest holders together own 70.4%.
In Q2 2026, 544 institutional holdings reports listed 32.3 million shares worth $8.28 billion.
Insiders reported 100 transactions in the last two years: 54 sales worth $81.72 million and no purchases. The newest one on file is from May 14, 2026 (D'Amico Andrew, Director).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 14, 2026.
Vicor Corporation
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest Vicor shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Patrizio Vinciarelli24.76 % | 8.5 million | 24.76% | $1.6B |
| T. Rowe Price Associates, Inc. (IM) | 4.4 million | 12.75% | $823.0M |
| JPMorgan Investment Management, Inc. | 2.4 million | 6.89% | $445.0M |
| T. Rowe Price International Ltd. | 2.4 million | 6.89% | $444.0M |
| BlackRock Advisors LLC | 2.3 million | 6.79% | $438.0M |
| Vanguard Portfolio Management LLC | 1.3 million | 3.72% | $240.0M |
| Vanguard Capital Management LLC | 1.1 million | 3.26% | $210.0M |
| State Street Corporation | 726,021 | 2.11% | $136.0M |
| Geode Capital Management LLC | 587,338 | 1.71% | $110.0M |
| Jane Street Group LLC | 539,169 | 1.57% | $101.0M |
As of September 25, 2026.
Vicor institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 544 | 32.3 million | $8.3B |
| Q1 2026 | 392 | 21.0 million | $3.3B |
| Q4 2025 | 305 | 20.5 million | $2.3B |
| Q3 2025 | 225 | 23.5 million | $1.2B |
| Q2 2025 | 221 | 19.1 million | $869.0M |
| Q1 2025 | 231 | 20.0 million | $935.0M |
| Q4 2024 | 214 | 19.6 million | $946.0M |
| Q3 2024 | 192 | 22.6 million | $950.0M |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Vicor insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| D'Amico Andrew | May 14, 2026 | Director | Sale at price 315.30 - 316.17 per share. | $252,277 |
| D'Amico Andrew | May 14, 2026 | Director | Conversion of Exercise of derivative security at price 50.00 per share. | $40,000 |
| D'Amico Andrew | May 13, 2026 | Director | Sale at price 311.58 - 315.00 per share. | $374,774 |
| Gusinov Alex | May 13, 2026 | Officer | Sale at price 300.00 per share. | $450,600 |
| Vinciarelli Patrizio | May 13, 2026 | Chief Executive Officer | Stock Gift at price 0.00 per share. | – |
| D'Amico Andrew | May 13, 2026 | Director | Conversion of Exercise of derivative security at price 50.00 per share. | $60,000 |
| D'Amico Andrew | May 12, 2026 | Director | Sale at price 303.03 per share. | $171,212 |
| Doyle Alvaro J | May 12, 2026 | Chief Technology Officer | Sale at price 286.91 per share. | $1.2M |
| Doyle Alvaro J | May 12, 2026 | Chief Technology Officer | Conversion of Exercise of derivative security at price 41.61 - 50.00 per share. | $181,360 |
| D'Amico Andrew | May 12, 2026 | Director | Conversion of Exercise of derivative security at price 75.43 per share. | $42,618 |
| Fendelet Quentin A | May 11, 2026 | Officer | Sale at price 290.01 - 301.34 per share. | $1.5M |
| Tuozzolo Claudio | May 11, 2026 | Officer and Director | Sale at price 304.65 per share. | $2.7M |
Newest 12 of 100 insider transactions in the last two years.
Questions and answers
Who owns the most Vicor stock?
Patrizio Vinciarelli24.76 %, with 24.76% of the company (as of September 25, 2026). Next: T. Rowe Price Associates, Inc. (IM) (12.75%) and JPMorgan Investment Management, Inc. (6.89%).
How many institutions own Vicor stock?
544 institutional holdings reports listed Vicor shares in Q2 2026, 32.3 million shares in all worth $8.28 billion.
Are Vicor insiders buying or selling the stock?
In the last two years insiders reported 54 sales and no purchases (100 transactions in all); the newest on file is from May 14, 2026.
