DaveManuel.com · Institutional Ownership · Who Owns It
VICOR CORP (VICR)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
520
Reporting holders
$9.0B
Reported value
4.7%
Calls
3.2%
Puts
+148
Holder change
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $934.6M | 2,460,929 | 0.01% | 8q | -14.7%-$160.8M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $899.5M | 2,368,366 | 0.09% | 31q | +25.4%+$182.3M |
| JPMORGAN CHASE & CO | $869.8M incl. $36.7K options CALL | 2,370,220 | 0.05% | 31q | +12.5%+$96.7M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $486.2M | 1,280,146 | 0.02% | 2q | +10.2%+$44.8M |
| JANE STREET GROUP, LLC | $475.5M incl. $270.8M options CALL+PUT | 539,169 | 0.04% | 14q | +64.5%+$186.5M |
| VANGUARD CAPITAL MANAGEMENT LLC | $425.6M | 1,120,538 | 0.01% | 2q | +8.3%+$32.6M |
| STATE STREET CORP | $275.7M | 726,021 | 0.01% | 31q | -10.5%-$32.5M |
| GEODE CAPITAL MANAGEMENT, LLC | $223.1M | 587,338 | 0.01% | 31q | -2.5%-$5.8M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $208.1M incl. $157.3M options CALL+PUT | 133,641 | 0.02% | 31q | +122.5%+$114.6M |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $201.6M | 530,885 | 0.16% | 31q | -12.0%-$27.5M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $201.6M | 530,811 | 0.09% | 7q | -1.0%-$2.1M |
| NEEDHAM INVESTMENT MANAGEMENT LLC | $199.0M | 524,000 | 5.98% | 31q | HELD |
| Driehaus Capital Management LLC | $188.6M | 496,507 | 1.09% | 2q | +162.1%+$116.6M |
| DIMENSIONAL FUND ADVISORS LP | $187.3M | 493,315 | 0.03% | 31q | HELD |
| AQR CAPITAL MANAGEMENT LLC | $168.0M | 449,529 | 0.06% | 26q | +203.1%+$112.5M |
| GOLDMAN SACHS GROUP INC | $141.9M | 373,757 | 0.01% | 31q | -4.1%-$6.1M |
| Arosa Capital Management LP | $100.6M incl. $53.2M options CALL+PUT | 125,000 | 17.94% | 3q | -20.1%-$25.4M |
| Invesco Ltd. | $93.2M | 245,334 | 0.01% | 31q | +94.0%+$45.1M |
| MORGAN STANLEY | $87.7M | 230,808 | 0.00% | 35q | -24.8%-$28.9M |
| CITADEL ADVISORS LLC | $87.5M incl. $82.4M options CALL+PUT | 13,434 | 0.01% | 31q | -71.1%-$214.9M |
| ACADIAN ASSET MANAGEMENT LLC | $76.7M | 202,077 | 0.09% | 9q | +136.9%+$44.3M |
| NORTHERN TRUST CORP | $73.3M | 192,902 | 0.01% | 31q | -29.3%-$30.3M |
| IMC-Chicago, LLC | $72.4M CALL+PUT | options only | 0.02% | 3q | OPTIONS |
| UBS Group AG | $59.6M | 156,855 | 0.01% | 31q | +69.7%+$24.5M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $59.0M | 155,435 | 0.01% | 31q | -20.1%-$14.8M |
| FIRST TRUST ADVISORS LP | $58.7M | 154,621 | 0.03% | 31q | -5.7%-$3.5M |
| VANGUARD FIDUCIARY TRUST CO | $58.0M | 152,771 | 0.01% | 2q | -3.5%-$2.1M |
| COLRAIN CAPITAL LLC | $57.1M | 150,277 | 19.32% | 10q | -25.5%-$19.5M |
| AWM Investment Company, Inc. | $56.6M | 148,981 | 4.91% | 25q | -48.3%-$52.9M |
| Bank of New York Mellon Corp | $53.2M | 139,978 | 0.01% | 31q | HELD |
| T. Rowe Price Investment Management, Inc. | $50.8M | 133,857 | 0.03% | new | NEW |
| PINNACLE ASSOCIATES LTD | $49.6M | 130,492 | 0.54% | 13q | -16.3%-$9.7M |
| Nuveen, LLC | $47.8M | 125,882 | 0.01% | 6q | +13.7%+$5.8M |
| HRT FINANCIAL LP | $47.5M incl. $1.1M options OPT | 124,966 | 0.09% | 2q | +48.9%+$15.6M |
| PRINCIPAL FINANCIAL GROUP INC | $44.8M | 117,886 | 0.02% | 31q | +6.9%+$2.9M |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | $42.7M | 112,380 | 0.38% | new | NEW |
| RHUMBLINE ADVISERS | $38.4M | 101,178 | 0.03% | 31q | +49.2%+$12.7M |
| Andar Capital Management HK Ltd | $38.4M | 101,100 | 17.23% | 3q | +83.8%+$17.5M |
| BANK OF AMERICA CORP /DE/ | $33.5M | 88,249 | 0.00% | 31q | -13.6%-$5.3M |
| TUDOR INVESTMENT CORP ET AL | $33.2M incl. $1.4M options CALL+PUT | 83,690 | 0.05% | 3q | -39.1%-$21.3M |
| Tidal Investments LLC | $31.5M | 82,874 | 0.05% | 5q | +87.8%+$14.7M |
| LOS ANGELES CAPITAL MANAGEMENT LLC | $30.2M | 79,396 | 0.11% | 3q | +1153.1%+$27.7M |
| RAYMOND JAMES FINANCIAL INC | $30.1M | 79,194 | 0.01% | 7q | +40.2%+$8.6M |
| HERALD INVESTMENT MANAGEMENT Ltd | $29.3M | 77,100 | 3.97% | 26q | -65.0%-$54.2M |
| ASHFORD CAPITAL MANAGEMENT INC | $28.5M | 74,920 | 3.05% | 31q | -34.0%-$14.7M |
| Russell Investments Group, Ltd. | $27.4M | 72,593 | 0.02% | 7q | +220.0%+$18.8M |
| HSBC HOLDINGS PLC | $26.4M | 70,523 | 0.01% | 2q | +796.8%+$23.4M |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | $25.7M | 67,769 | 0.17% | 2q | -41.3%-$18.1M |
| AMERIPRISE FINANCIAL INC | $25.0M | 65,696 | 0.01% | 31q | +29.5%+$5.7M |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | $24.7M CALL | options only | 0.43% | new | OPTIONS |
| MILLENNIUM MANAGEMENT LLC | $24.1M incl. $227.9K options CALL | 62,780 | 0.01% | 9q | -71.7%-$61.0M |
| BNP PARIBAS FINANCIAL MARKETS | $23.7M | 62,291 | 0.01% | 31q | -17.0%-$4.8M |
| GF FUND MANAGEMENT CO. LTD. | $23.2M | 60,972 | 0.28% | 2q | -47.1%-$20.6M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | $22.2M | 58,388 | 0.03% | 2q | +90.5%+$10.5M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $19.4M | 51,121 | 0.00% | 30q | +29.8%+$4.5M |
| Alight Capital Management LP | $19.0M | 50,000 | 2.67% | 3q | +25.0%+$3.8M |
| PRUDENTIAL FINANCIAL INC | $18.7M | 49,285 | 0.02% | 11q | +73.6%+$7.9M |
| Trexquant Investment LP | $18.3M | 48,149 | 0.11% | 2q | +682.7%+$15.9M |
| Bruce & Co., Inc. | $18.2M | 48,000 | 4.93% | 12q | -26.2%-$6.5M |
| Swiss National Bank | $17.9M | 47,232 | 0.01% | 31q | +3.5%+$607.6K |
| CIBC WORLD MARKET INC. | $17.1M | 44,987 | 0.03% | 3q | -38.5%-$10.7M |
| ALGERT GLOBAL LLC | $17.1M | 44,930 | 0.20% | 6q | +100.8%+$8.6M |
| CHAPIN DAVIS, INC. | $16.8M | 44,200 | 2.95% | 8q | HELD |
| Point72 Asset Management, L.P. | $16.6M incl. $12.8M options CALL+PUT | 10,000 | 0.02% | 3q | -65.6%-$31.7M |
| NEUBERGER BERMAN GROUP LLC | $16.2M | 42,655 | 0.01% | 2q | +39.8%+$4.6M |
| WELLS FARGO & COMPANY/MN | $15.7M | 41,463 | 0.00% | 31q | +12.0%+$1.7M |
| ALLIANCEBERNSTEIN L.P. | $15.7M | 97,525 | 0.01% | 31q | -3.6%-$594.4K |
| Informed Momentum Co LLC | $15.1M | 39,729 | 1.34% | 3q | -13.8%-$2.4M |
| FRANKLIN RESOURCES INC | $14.9M | 39,267 | 0.00% | 11q | +47.7%+$4.8M |
| CAPITAL FUND MANAGEMENT S.A. | $14.7M | 38,615 | 0.06% | 2q | +146.8%+$8.7M |
| Portolan Capital Management, LLC | $14.5M | 38,081 | 0.54% | 3q | +42.8%+$4.3M |
| FMR LLC | $14.1M | 37,254 | 0.00% | 26q | -77.5%-$48.6M |
| GatePass Capital, LLC | $13.1M | 34,604 | 4.99% | 7q | -2.8%-$378.3K |
| Chicago Capital, LLC | $12.8M | 33,812 | 0.31% | 3q | +63.2%+$5.0M |
| NATIXIS ADVISORS, LLC | $12.6M | 33,091 | 0.01% | new | NEW |
| D. E. Shaw & Co., Inc. | $12.3M incl. $9.2M options CALL+PUT | 8,144 | 0.01% | 15q | +307.2%+$9.3M |
| BESSEMER GROUP INC | $11.9M | 31,416 | 0.02% | 8q | HELD |
| Legal & General Group Plc | $11.7M | 30,830 | 0.00% | 31q | HELD |
| SEI INVESTMENTS CO | $11.2M | 29,498 | 0.01% | 6q | +10.6%+$1.1M |
| Vident Advisory, LLC | $10.5M | 27,516 | 0.08% | 2q | +49.9%+$3.5M |
| Weiss Asset Management LP | $10.4M | 27,439 | 0.11% | 2q | -3.7%-$402.9K |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $10.4M | 27,326 | 0.01% | 31q | +1.4%+$138.6K |
| NATIXIS | $10.3M | 27,116 | 0.04% | new | NEW |
| Walleye Trading LLC | $10.2M incl. $7.4M options CALL+PUT | 7,377 | 0.01% | 3q | HELD |
| JACOBS LEVY EQUITY MANAGEMENT, INC | $9.9M | 26,003 | 0.04% | 7q | -74.6%-$29.0M |
| IRONWOOD INVESTMENT MANAGEMENT LLC | $9.7M | 25,507 | 3.35% | 31q | -17.4%-$2.0M |
| ExodusPoint Capital Management, LP | $9.7M | 25,493 | 0.06% | 3q | +114.1%+$5.2M |
| KINGDON CAPITAL MANAGEMENT, L.L.C. | $9.5M | 25,000 | 0.97% | 2q | +25.0%+$1.9M |
| SIMPLEX TRADING, LLC | $9.4M incl. $7.4M options CALL+PUT | 5,258 | 0.01% | 31q | -55.1%-$11.5M |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $9.4M | 24,623 | 0.01% | new | NEW |
| Bouvel Investment Partners, LLC | $9.3M | 24,525 | 2.11% | 12q | -1.7%-$156.8K |
| Retirement Systems of Alabama | $9.2M | 24,167 | 0.03% | 2q | HELD |
| Main Management ETF Advisors, LLC | $9.0M | 23,606 | 0.27% | new | NEW |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM | $8.7M | 22,872 | 0.02% | 31q | HELD |
| TWO SIGMA INVESTMENTS, LP | $8.4M | 22,226 | 0.01% | 15q | +89.1%+$4.0M |
| Creative Planning | $8.4M | 22,138 | 0.00% | 5q | +52.0%+$2.9M |
| RICE HALL JAMES & ASSOCIATES, LLC | $8.3M | 21,893 | 0.40% | 27q | -24.0%-$2.6M |
| LPL Financial LLC | $8.2M | 21,505 | 0.00% | 8q | +8.7%+$657.0K |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | $8.1M | 21,250 | 0.01% | 31q | +232.5%+$5.6M |
| VANGUARD ASSET MANAGEMENT, Ltd | $7.5M | 19,649 | 0.01% | 2q | +7.6%+$524.9K |
Showing the largest 100 of 520 reported holders.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-09-10 | 2026-09-09 | Charter or bylaws amended | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-11 | McNamara Michael | General Manager Mfg. Ops. | Sold | 18,618 | $5.8M ×3 |
Ten percent owners and entities
Usually an institution that crossed a reporting threshold, or a company taking a strategic stake, rather than an individual with a view.
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-30 | VINCIARELLI PATRIZIO | Chairman & CEO | Sold | 20,000 | $7.5M ×17 |
| 2026-06-22 | VINCIARELLI PATRIZIO | Chairman & CEO | Sold | 20,000 | $7.2M ×16 |
| 2026-07-01 | VINCIARELLI PATRIZIO | Chairman & CEO | Sold | 20,000 | $7.1M ×19 |
| 2026-05-28 | VINCIARELLI PATRIZIO | Chairman and CEO | Sold | 20,000 | $6.8M ×19 |
| 2026-06-23 | VINCIARELLI PATRIZIO | Chairman & CEO | Sold | 20,000 | $6.7M ×18 |
| 2026-06-18 | VINCIARELLI PATRIZIO | Chairman & CEO | Sold | 20,000 | $6.6M ×13 |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 127 | $170.1M | 596,430 | 30 | 39 | 34 | 0.0% |
| Q2 2026 | 520 | $9.0B | 21,964,689 | 191 | 157 | 124 | 7.9% |
| Q1 2026 | 372 | $3.5B | 21,018,621 | 106 | 117 | 102 | 4.4% |
| Q4 2025 | 293 | $2.3B | 20,526,184 | 99 | 79 | 67 | 2.6% |
| Q3 2025 | 215 | $1.2B | 23,514,084 | 40 | 64 | 62 | 1.0% |
| Q2 2025 | 206 | $883.6M | 19,119,706 | 30 | 58 | 66 | 1.9% |
| Q1 2025 | 215 | $954.3M | 19,983,597 | 39 | 68 | 61 | 2.1% |
| Q4 2024 | 199 | $961.8M | 19,609,023 | 33 | 53 | 59 | 1.5% |
| Q3 2024 | 179 | $963.5M | 22,562,544 | 28 | 53 | 54 | 1.4% |
| Q2 2024 | 171 | $696.2M | 20,764,297 | 24 | 49 | 63 | 1.1% |
| Q1 2024 | 176 | $855.6M | 21,986,158 | 19 | 54 | 57 | 1.7% |
| Q4 2023 | 204 | $1.0B | 21,955,967 | 31 | 67 | 70 | 1.6% |
| Q3 2023 | 229 | $1.3B | 21,103,794 | 49 | 63 | 76 | 2.7% |
| Q2 2023 | 201 | $1.2B | 21,172,100 | 33 | 66 | 63 | 1.7% |
| Q1 2023 | 201 | $927.4M | 19,494,865 | 24 | 74 | 59 | 1.3% |
| Q4 2022 | 201 | $976.9M | 17,977,020 | 32 | 68 | 56 | 1.1% |
| Q3 2022 | 198 | $1.4B | 24,246,725 | 25 | 84 | 47 | 0.9% |
| Q2 2022 | 190 | $3.2B | 58,618,951 | 20 | 77 | 60 | 0.4% |
| Q1 2022 | 223 | $2.5B | 35,520,384 | 37 | 82 | 68 | 1.1% |
| Q4 2021 | 244 | $5.1B | 40,001,202 | 47 | 83 | 73 | 0.7% |
| Q3 2021 | 215 | $4.1B | 30,330,022 | 34 | 55 | 75 | 0.6% |
| Q2 2021 | 191 | $4.3B | 40,603,051 | 31 | 56 | 51 | 0.4% |
| Q1 2021 | 190 | $4.1B | 48,001,985 | 26 | 60 | 67 | 0.3% |
| Q4 2020 | 196 | $2.8B | 29,603,702 | 37 | 46 | 65 | 1.0% |
| Q3 2020 | 177 | $1.7B | 21,978,092 | 20 | 64 | 65 | 1.8% |
| Q2 2020 | 184 | $1.7B | 22,384,783 | 50 | 58 | 46 | 2.6% |
| Q1 2020 | 147 | $1.3B | 29,558,198 | 28 | 52 | 36 | 1.4% |
| Q4 2019 | 135 | $949.9M | 20,095,800 | 23 | 38 | 45 | 1.2% |
| Q3 2019 | 128 | $544.7M | 18,177,047 | 14 | 51 | 27 | 1.5% |
| Q2 2019 | 132 | $579.4M | 18,341,233 | 15 | 53 | 35 | 1.8% |
| Q1 2019 | 135 | $585.6M | 18,324,249 | 15 | 42 | 47 | 2.9% |
| Q4 2018 | 147 | $810.4M | 21,115,734 | 4 | 1 | 2 | 1.5% |