Security key
925815102
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 19,949,752
- Total 13F value
- $933,063,791
- Share change
- +341,934
- Put/Call ratio
- 50%
- SEC-reported price per share
- $46.78
- Number of holders
- 213
- Value change
- +$14,877,205
- Number of buys
- 114
- Number of sells
- 84
- Shares outstanding
- 33,818,955
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2025
Institutions
213
Top holders
10
VICR full security history
Ownership snapshot
Full 13F holder table
VICOR CORP SEC filings
VICOR CORP company facts
Broader feeds
Ownership snapshot
Top reported holders of VICR - VICOR CORP - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Patrizio Vinciarelli
Disclosed value leader
Patrizio Vinciarelli
Comparable rows
15/15
Latest evidence
31 Dec 2024
13D/G
13F
Lead comparable stake: 47%
13D/G row: Patrizio Vinciarelli
Showing 1-6 of 15 holder rows.
Quick read
Patrizio Vinciarelli leads the comparable SEC ownership view at 47%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Patrizio Vinciarelli's linked filing trail.
Comparable ownership
Top 5
Patrizio Vinciarelli
47%
JPMORGAN CHASE & CO
11%
BlackRock, Inc.
11%
VANGUARD GROUP INC
7.5%
STATE STREET CORP
2.6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Patrizio Vinciarelli |
13D/G
|
47%
|
$1,066,666,077
21,051,235 shares
|
$0 | 31 Dec 2024 |
| JPMORGAN CHASE & CO |
13F
Company
|
11%
|
$185,903,033
3,847,330 shares
|
— | 31 Dec 2024 |
| BlackRock, Inc. |
13F
Company
|
11%
|
$172,083,610
3,561,333 shares
|
— | 31 Dec 2024 |
| VANGUARD GROUP INC |
13F
Company
|
7.5%
|
$122,222,926
2,529,448 shares
|
— | 31 Dec 2024 |
| STATE STREET CORP |
13F
Company
|
2.6%
|
$42,858,100
886,964 shares
|
— | 31 Dec 2024 |
| NEEDHAM INVESTMENT MANAGEMENT LLC |
13F
Company
|
2.6%
|
$42,231,680
874,000 shares
|
— | 31 Dec 2024 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
213
Shares
19,949,752
Rows available
213
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2025 vs Q1 2025 Across Filers
Q1 2025 holders
213
Q1 2025 holders
213
Holder diff
0
| Investor | Q1 2025 Shares | Q1 2025 Shares | Share Diff | Share Chg % | Q1 2025 value | Q1 2025 value | Value change | Value Chg % |
|---|