Vicor
Builds modular power systems for AI processors and other high-performance electronics.
$188.63
After-hours close+0.77 (+0.41%)
At close$187.86(−7.75%)
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Breakdown13F · Form 4
Institutions 71.61%32.46M sharesInsiders 19.12%8.67M sharesOther 9.27%4.20M shares
Shares outstanding 45.33M · Float 31.25M · 68.9% free float
Institutions13F, as of Jun 30, 2026
539 holders · 32.46M shares · 191 new positions · 352 increased · 132 reduced · 47 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 2.46M | 5.43% | −423.4K | Aug 7, 2026 |
| JPMorgan Chase & Co | 2.37M | 5.23% | +263.5K | Aug 12, 2026 |
| Price T Rowe Associates Inc /MD/ | 2.37M | 5.22% | +479.9K | Aug 14, 2026 |
| Vanguard Portfolio Management LLC | 1.28M | 2.82% | +118.0K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 1.12M | 2.47% | +85.8K | Aug 13, 2026 |
| State Street Corp | 726.0K | 1.60% | −85.6K | Aug 7, 2026 |
| Geode Capital Management, LLC | 587.3K | 1.30% | −15.3K | Aug 12, 2026 |
| Jane Street Group, LLC | 539.2K | 1.19% | +211.5K | Aug 14, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Patrizio Vinciarelli | 47.30% | 21.05M | 13G | Feb 11, 2025 ↗ |
| BlackRock, Inc. | 7.90% | 2.66M | 13G | Apr 24, 2026 ↗ |
| JPMorgan Chase & Co | 6.90% | 2.34M | 13G | Jul 16, 2026 ↗ |
| T. Rowe Price Associates, Inc. | 5.60% | 1.89M | 13G | May 15, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Patrizio Vinciarelli | director, 10 percent owner, officer: Chairman & CEO | 8.51M | 18.78% | Jul 7, 2026 |
| Estia J. Eichten | director | 101.4K | 0.22% | Jul 28, 2026 |
| Michael McNamara | director, officer: General Manager Mfg. Ops. | 18.2K | 0.04% | May 12, 2026 |
| Claudio Tuozzolo | director, officer: Corp. Vice President | 13.2K | 0.03% | Jun 12, 2026 |
| Samuel J. Anderson | director | 7.4K | 0.02% | Aug 24, 2026 |
| Sean Crilly | officer: Corp. VP-Eng., Pwr Syst. | 7.2K | 0.02% | Jun 8, 2026 |
| Alex Gusinov | officer: Corp. Vice President Eng. | 6.0K | 0.01% | May 14, 2026 |
| Philip D. Davies | director, officer: Corp. VP-Global Sales & Mktg. | 1.9K | 0.00% | Aug 5, 2026 |
| Alvaro Doyle | officer: VP and CIO | 42 | 0.00% | May 13, 2026 |
11 people have not refiled in the last 18 months (152.0K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 17, 2026 | Zmira Laviedirector | Sale | 908 | $250.00 | 0 |
| Aug 17, 2026 | Samuel J. Andersondirector | Sale | 2,073 | $252.60 | 4,034 |
| Aug 3, 2026 | Philip D. Daviesdirector, officer: Corp. VP-Global Sales & Mktg. | Sale · 9 lots | 3,072 | $211.69 | 1,920 |
| Jul 23, 2026 | Zmira Laviedirector | Sale | 1,216 | $224.72 | 0 |
| Jul 6, 2026 | Patrizio Vinciarellidirector, 10 percent owner, officer: Chairman & CEO | Sale · 2 lots | 700 | $302.40 | 8,347,390 |
| Jul 1, 2026 | Patrizio Vinciarellidirector, 10 percent owner, officer: Chairman & CEO | Sale · 19 lots | 20,000 | $356.68 | 8,368,090 |
| Jul 1, 2026 | Philip D. Daviesdirector, officer: Corp. VP-Global Sales & Mktg. | Sale · 11 lots | 3,073 | $356.97 | 1,920 |
| Jul 2, 2026 | Patrizio Vinciarellidirector, 10 percent owner, officer: Chairman & CEO | Sale · 24 lots | 20,000 | $318.88 | 8,348,090 |
| Jun 30, 2026 | Patrizio Vinciarellidirector, 10 percent owner, officer: Chairman & CEO | Sale · 17 lots | 20,000 | $375.04 | 8,388,090 |
| Jun 29, 2026 | Patrizio Vinciarellidirector, 10 percent owner, officer: Chairman & CEO | Sale · 33 lots | 20,000 | $354.65 | 8,408,090 |
CongressHouse and Senate disclosures
Not reported.