Vicor

VICR · NASDAQ

$204.14+$13.46 (+7.06%)TodayMarket closed · Oct 20, 4:05 PM ET

Prev close $190.68

Who owns VICR

Largest institutional holders, from their latest 13F filings

The 10 largest institutions hold 42.0% of VICR’s shares.

Vinciarelli (Patrizio)18.5%
T. Rowe Price Associates, Inc.5.1%
BlackRock Institutional Trust Company, N.A.4.7%
JP Morgan Asset Management3.4%
Next 6 largest institutions10.4%
All other shareholders58.0%

Top institutional holders of VICR
Holder	Shares	% of shares	Change, last filing	Filed
Vinciarelli (Patrizio)	8.52M	18.47%	−40.70K	Jul 6, 2026
T. Rowe Price Associates, Inc.	2.34M	5.07%	+482.14K	Jun 30, 2026
BlackRock Institutional Trust Company, N.A.	2.18M	4.73%	−346.29K	Jun 30, 2026
JP Morgan Asset Management	1.55M	3.35%	+412.80K	Jun 30, 2026
Vanguard Portfolio Management, LLC	1.28M	2.78%	+118.01K	Jun 30, 2026
Vanguard Capital Management, LLC	1.12M	2.43%	+85.80K	Jun 30, 2026
State Street Investment Management (US)	726.02K	1.57%	−85.60K	Jun 30, 2026
Geode Capital Management, L.L.C.	587.34K	1.27%	−15.32K	Jun 30, 2026
Jane Street Capital, L.L.C.	539.17K	1.17%	+211.45K	Jun 30, 2026
Manulife Investment Management (North America) Limited	530.88K	1.15%	−72.48K	Jun 30, 2026

Largest mutual fund holders

Top mutual fund holders of VICR
Holder	Shares	% of shares	Change, last filing	Filed
iShares Core S&P Mid-Cap ETF	817.74K	1.77%	+15.65K	Aug 31, 2026
Vanguard Total Stock Market Index Fund	808.96K	1.75%	+2.48K	Jul 31, 2026
Vanguard Small-Cap Index Fund	584.05K	1.27%	+1.55K	Jul 31, 2026
Needham Aggressive Growth Fund	477.00K	1.03%	+2.00K	Jun 30, 2026
JPMorgan Funds - US Technology Fund	349.33K	0.76%	−43.78K	Jul 31, 2026

Insider trades

Form 4 filings by officers, directors and large holders

Over the last 6 months, insiders sold $181.27M (556 trades) of VICR on the open market, with no buys.

Latest VICR insider transactions
Insider	Date	Type	Shares	Price	Value
VINCIARELLI PATRIZIO	Oct 2, 2026	Sale	1.31K	$313.32	$411.07K
VINCIARELLI PATRIZIO	Oct 2, 2026	Sale	2.65K	$312.29	$826.94K
VINCIARELLI PATRIZIO	Oct 2, 2026	Sale	2.68K	$311.42	$834.30K
VINCIARELLI PATRIZIO	Oct 2, 2026	Sale	6.45K	$310.32	$2.00M
VINCIARELLI PATRIZIO	Oct 2, 2026	Sale	877	$309.10	$271.08K
VINCIARELLI PATRIZIO	Oct 2, 2026	Sale	4.96K	$308.01	$1.53M
VINCIARELLI PATRIZIO	Oct 2, 2026	Sale	1.07K	$306.93	$329.95K
VINCIARELLI PATRIZIO	Oct 1, 2026	Sale	900	$330.00	$297.00K
VINCIARELLI PATRIZIO	Oct 1, 2026	Sale	100	$324.98	$32.50K
VINCIARELLI PATRIZIO	Oct 1, 2026	Sale	600	$323.37	$194.02K

Short interest

Settled Sep 30, 2026

Shares short: 2.41M
Days to cover: 2.22
% of shares outstanding: 5.24%
Average daily volume: 1.09M
Change since last report: +18.0%

Information on this page is provided for informational purposes only and is not a recommendation to buy, sell or hold any security. Investing involves risk, including possible loss of principal. Market data is delayed at least 15 minutes and is provided without warranty. Analyst ratings, price targets and company data come from third-party sources. Past performance does not guarantee future results.