Patrizio Vinciarelli owns 18.38% of Vicor
8,474,515 shares as of the October 2, 2026 filing, worth $1.6B at the latest close.
VICR · $8.8B market cap · Founder-ledGet an email when Patrizio Vinciarelli’s stake moves.
Free.
The stake
18.38%
worth $1.6B at the latest close
Stake rank
#74
by dollar value of the stake
Last sale
17 days ago
Oct 2, 2026
Last buy
3,231 days ago
Dec 14, 2017 · $71,348
Patrizio Vinciarelli owns 18.38% of VICOR CORP: 8,474,515 of 46,106,732 shares, worth about $1.6B at the 2026-10-16 close. The stake has moved from 24.40% in 2016 to 18.38% on 2026-10-02, across 86 sales and 4 purchases that moved it since 2016. The last trade that moved it was a planned sale of $6.2M on 2026-10-02.
How the stake is held
as of the Oct 2, 2026 filing
SHARES
OF THE STAKE
COMMON STOCK · stated Oct 2, 2026 · Form 4 ↗
HELD DIRECTLY
8,307,390
98.0%
HELD INDIRECTLY · Indirect, per the filing’s footnote
167,125
2.0%
THE STAKE
8,474,515
18.38%