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VICR

Vicor Corp

Company with tickers: VICR

CIK
751978
CUSIP
925815102
Shares Outstanding
33,863,689
13F Activity (30d)
14 filings 10 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 368
Total Value: $3,325,303,660
Total Shares: 20,654,060
Showing 1–100 of 385 holdings by value · page 1 of 4

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 368 13F filers · Δ vs Dec 31, 2025
Top Holder
14.0%
Jun 2023 → Mar 2026 · range 11.6% – 22.9%
−5.2 pts
Top 5
42.2%
Jun 2023 → Mar 2026 · range 40.8% – 61.6%
−12.8 pts
Top 10
55.6%
Jun 2023 → Mar 2026 · range 52.8% – 72.2%
−10.7 pts
HHI
494
Jun 2023 → Mar 2026 · range 446 – 1,080
Broadly held−384

Quarterly Activity

vs Dec 31, 2025
New
107
Increased
123
Decreased
107
Sold Out
33
Unchanged
31
Holder count: +74
Institutional value: +44.8%
Shares held: -1.4%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Showing 100 of 385
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Holder Value (USD) % of 13F Shares Open