Latest Period
Q1 2026
Security Snapshot
VICOR CORP - Common Stock, par value $0.01 per share (VICR) Institutional Ownership
CUSIP: 925815102
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
365
Shares (Excl. Options)
20,995,399
Price
$161.00
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- Security type / class
- Equity / Common Stock, par value $0.01 per share
- Symbol
- VICR on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 20,995,399
- Total 13F value
- $3,334,912,075
- Portfolio coverage rank
- 0.01%
- Share change
- +561,032
- Value change
- +$127,821,103
- Number of holders
- 365
- Shares outstanding
- 33,970,029
- SEC-reported price per share
- $379.78
- Insider filing price
- $379.78
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- VICR - VICOR CORP - Common Stock, par value $0.01 per share is tracked under CUSIP 925815102.
- 365 institutions reported positions in Q1 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 365 to 54 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $3,334,912,075 to $96,396,296.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 365 institutions filings for Q1 2026.
Security key
925815102
Latest holder period
Q1 2026
13F holders
365
13D/G owners
4
CIK / CUSIP context first
Open Q1 2026 holders
VICR full holder history
VICOR CORP SEC filings
VICOR CORP company facts
VICOR CORP insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 925815102:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
VICR
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| VINCIARELLI PATRIZIO | 47% | $1,066,666,077 | 21,051,235 | Patrizio Vinciarelli | 31 Dec 2024 | |||
| BlackRock, Inc. | 7.9% | $428,063,580 | 2,658,780 | BlackRock, Inc. | 31 Mar 2026 | |||
| JPMORGAN CHASE & CO | 6.9% | +48% | $890,178,495 | +$298,865,213 | 2,343,932 | +51% | JPMORGAN CHASE & CO | 30 Jun 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 5.6% | $349,211,434 | 1,888,446 | T. Rowe Price Associates, Inc. | 31 Mar 2026 |
As of 31 Mar 2026, 365 institutional investors reported holding 20,995,399 shares of VICOR CORP - Common Stock, par value $0.01 per share (VICR). This represents 62% of the company’s total 33,970,029 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
47%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8.5% | 2,884,375 | -19% | 0.01% | $464,384,375 |
| JPMORGAN CHASE & CO | 6.2% | 2,106,726 | -48% | 0.02% | $299,618,699 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 5.6% | 1,888,446 | +329% | 0.04% | $304,040,000 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.4% | 1,162,134 | 0% | 0.01% | $187,103,574 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3% | 1,034,740 | 0% | 0% | $166,593,140 |
| STATE STREET CORP | 2.4% | 811,617 | -3% | 0% | $130,670,337 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 1.8% | 603,364 | +40% | 0.08% | $97,141,604 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.8% | 602,661 | +7.1% | 0.01% | $97,045,373 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.6% | 536,274 | +43% | 0.05% | $86,340,114 |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 1.5% | 522,000 | -8.4% | 4.3% | $84,042,000 |
| DIMENSIONAL FUND ADVISORS LP | 1.5% | 493,670 | -11% | 0.02% | $79,435,335 |
| GOLDMAN SACHS GROUP INC | 1.1% | 389,767 | +165% | 0.01% | $62,752,508 |
| JANE STREET GROUP, LLC | 0.96% | 327,715 | 0.06% | $52,762,115 | |
| MORGAN STANLEY | 0.9% | 306,929 | -14% | 0% | $49,415,583 |
| AWM Investment Company, Inc. | 0.85% | 288,180 | -14% | 5.1% | $46,396,980 |
| NORTHERN TRUST CORP | 0.8% | 272,711 | +22% | 0.01% | $43,906,471 |
| MILLENNIUM MANAGEMENT LLC | 0.65% | 221,867 | +6857% | 0.03% | $35,720,587 |
| HERALD INVESTMENT MANAGEMENT Ltd | 0.65% | 220,000 | -10% | 4.9% | $35,393,600 |
| COLRAIN CAPITAL LLC | 0.59% | 201,633 | -11% | 13% | $32,462,913 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.57% | 194,453 | -12% | 0% | $31,306,933 |
| Driehaus Capital Management LLC | 0.56% | 189,463 | 0.22% | $30,503,543 | |
| FMR LLC | 0.49% | 165,326 | -22% | 0% | $26,617,512 |
| FIRST TRUST ADVISORS LP | 0.48% | 163,953 | +23% | 0.02% | $26,396,433 |
| VANGUARD FIDUCIARY TRUST CO | 0.47% | 158,380 | 0% | 0.01% | $25,499,180 |
| Arosa Capital Management LP | 0.46% | 156,500 | +16% | 16% | $25,196,500 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q1 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 256,056 | $96,396,296 | +$32,116,876 | $379.78 | 54 |
| 2026 Q1 | 20,995,399 | $3,334,912,075 | +$127,821,103 | $161.00 | 365 |
| 2025 Q4 | 20,521,323 | $2,250,185,894 | +$135,298,166 | $109.60 | 288 |
| 2025 Q3 | 19,379,845 | $963,504,588 | +$15,629,115 | $49.72 | 211 |
| 2025 Q2 | 19,105,056 | $866,606,754 | -$39,787,617 | $45.36 | 205 |
| 2025 Q1 | 19,949,752 | $933,063,791 | +$14,877,205 | $46.78 | 213 |
| 2024 Q4 | 19,608,856 | $947,439,127 | +$11,124,589 | $48.32 | 197 |
| 2024 Q3 | 19,287,307 | $812,133,108 | +$24,193,140 | $42.10 | 177 |
| 2024 Q2 | 18,742,076 | $621,472,341 | -$18,426,350 | $33.16 | 168 |
| 2024 Q1 | 19,230,105 | $735,296,758 | -$32,957,088 | $38.24 | 171 |
| 2023 Q4 | 19,957,570 | $896,983,121 | -$66,469,896 | $44.94 | 199 |
| 2023 Q3 | 21,103,493 | $1,243,121,109 | -$7,006,139 | $58.89 | 222 |
| 2023 Q2 | 21,021,109 | $1,135,396,967 | +$97,002,020 | $54.00 | 196 |
| 2023 Q1 | 19,449,733 | $912,974,929 | +$59,347,424 | $46.94 | 196 |
| 2022 Q4 | 17,977,793 | $966,441,693 | -$27,759,930 | $53.75 | 193 |
| 2022 Q3 | 18,456,020 | $1,091,375,640 | -$21,975,865 | $59.14 | 197 |
| 2022 Q2 | 18,731,404 | $1,025,180,102 | +$44,105,131 | $54.73 | 188 |
| 2022 Q1 | 17,813,590 | $1,257,628,267 | -$97,529,558 | $70.55 | 216 |
| 2021 Q4 | 17,458,310 | $2,216,179,449 | -$69,284,815 | $126.98 | 239 |
| 2021 Q3 | 17,853,016 | $2,394,863,009 | +$136,258,694 | $134.16 | 211 |
| 2021 Q2 | 16,850,744 | $1,782,014,230 | +$80,813,907 | $105.74 | 187 |
| 2021 Q1 | 16,150,553 | $1,373,453,035 | +$32,204,794 | $85.03 | 192 |
| 2020 Q4 | 15,745,479 | $1,452,236,499 | +$5,563,320 | $92.22 | 192 |
| 2020 Q3 | 15,584,014 | $1,211,415,911 | +$9,967,483 | $77.73 | 177 |
| 2020 Q2 | 15,447,827 | $1,111,501,146 | +$159,720,708 | $71.95 | 184 |