Vicor Corporation
Vicor Corporation (VICR) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · VICR · as of Sep 30, 2025
Ownership Breakdown
223
Institutional Holders
▲ 5 vs Q2
$976.41M
Total Inst. Value
▲ $120.22M vs Q2
45.10M
Shares Outstanding
freeFloat 68.93%
19.64M
13F Shares Held
▲ 764,094 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
VICR largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
JPMORGAN CHASE & CO electronic components, nec | 4.13M | 9.13% | 9.13% | $205.54B | Nov 26, 2025 | ▼ 316.8K |
BLACKROCK, INC. electronic components, nec | 3.71M | 8.20% | 8.20% | $184.58B | Nov 12, 2025 | ▲ 288.7K |
VANGUARD GROUP INC electronic components, nec | 2.47M | 5.46% | 5.46% | $122.99B | Nov 7, 2025 | ▼ 50.5K |
STATE STREET CORP electronic components, nec | 851.2K | 1.88% | 1.88% | $42.32B | Nov 14, 2025 | ▲ 2.9K |
NEEDHAM INVESTMENT MANAGEMENT LLC electronic components, nec | 641.5K | 1.42% | 1.42% | $31.89B | Nov 14, 2025 | ▼ 64.0K |
DIMENSIONAL FUND ADVISORS LP electronic components, nec | 578.5K | 1.28% | 1.28% | $28.76B | Nov 12, 2025 | ▲ 25.4K |
GEODE CAPITAL MANAGEMENT, LLC electronic components, nec | 576.2K | 1.27% | 1.27% | $28.65B | Nov 12, 2025 | ▲ 6.2K |
MORGAN STANLEY electronic components, nec | 445.0K | 98.31% | 98.31% | $22.13B | May 27, 2026 | ▲ 117.1K |
AWM INVESTMENT COMPANY, INC. electronic components, nec | 333.2K | 73.61% | 73.61% | $16.57B | Nov 13, 2025 | ▼ 30 |
NUVEEN, LLC electronic components, nec | 285.4K | 63.05% | 63.05% | $14.19B | Nov 12, 2025 | ▲ 119.7K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
24
Increased
+1.32M shares3
New Positions
first time holders19
Decreased
−801.8K shares0
Sold Out
fully exitedNet shares change (top 50)
+517.1K
+1.32M / −801.8K
Net new holders
+8
3 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
VICR insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
16
Buy transactions
19
Sell transactions
0.84
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Morrison Kemble D VP-Corporate Controller | May 11, 2026 | Sale | 800 | $300.31 | $240.2K | 1.5K | Form 4 ↗ |
Morrison Kemble D VP-Corporate Controller | May 11, 2026 | Sale | 1,000 | $301.71 | $301.7K | 513 | Form 4 ↗ |
Morrison Kemble D VP-Corporate Controller | May 11, 2026 | Sale | 100 | $302.51 | $30.3K | 413 | Form 4 ↗ |
Morrison Kemble D VP-Corporate Controller | May 11, 2026 | Sale | 413 | $303.55 | $125.4K | 0 | Form 4 ↗ |
Fendelet Quentin A. Corp. VP - CAO | May 11, 2026 | Sale | 700 | $290.01 | $203.0K | 4.4K | Form 4 ↗ |
Fendelet Quentin A. Corp. VP - CAO | May 11, 2026 | Sale | 262 | $291.44 | $76.4K | 4.1K | Form 4 ↗ |
Fendelet Quentin A. Corp. VP - CAO | May 11, 2026 | Sale | 238 | $292.66 | $69.7K | 3.9K | Form 4 ↗ |
Fendelet Quentin A. Corp. VP - CAO | May 11, 2026 | Sale | 497 | $293.63 | $145.9K | 3.4K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Vicor Corporation (VICR) is primarily owned by institutional investors, who hold approximately 43.5% of total shares outstanding. Company insiders own approximately 31.07%, while retail and public investors account for the remaining 25.38%.
The largest institutional shareholder of Vicor Corporation is JPMORGAN CHASE & CO, holding approximately 4.13 million shares — equal to 9.13% of outstanding shares — as of September 30, 2025.
A total of 223 institutional investors currently hold VICR stock, with a combined institutional value of approximately $976,411,390 as of the most recent 13F filing period.
Frequently asked questions
VICR ownershipVicor Corporation (VICR) is primarily owned by institutional investors, who hold approximately 43.5% of shares. The largest shareholder is JPMORGAN CHASE & CO with a 9.13% stake. Company insiders hold 31.07%. Data sourced from SEC Form 13F as of September 30, 2025.