Vicor Ownership | Who Owns Vicor?

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Vicor Ownership Summary

Vicor is owned by 43.38% institutional investors, 31.45% insiders, and 25.17% retail investors. Jpmorgan chase is the largest institutional shareholder, holding 9.13% of VICR shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 3.06% of its assets in Vicor shares.

VICR Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Vicor	43.38%	31.45%	25.17%
Sector	Technology Stocks	50.72%	12.57%	36.71%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Jpmorgan chase	4.13M	9.13%	$205.54M
Blackrock funding, inc. /de	3.71M	8.20%	$184.58M
Blackrock	3.40M	7.63%	$112.61M
Vanguard group	2.47M	5.46%	$122.99M
State street	851.22K	1.88%	$42.32M
Needham investment management	641.45K	1.42%	$31.89M
Dimensional fund advisors lp	578.51K	1.28%	$28.76M
Geode capital management	576.24K	1.27%	$28.65M
Morgan stanley	445.00K	0.98%	$22.13M
Awm investment company	333.18K	0.74%	$16.57M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Colrain capital	254.14K	7.20%	$12.64M
Needham investment management	641.45K	2.22%	$31.89M
Herald investment management	250.00K	1.65%	$12.41M
Awm investment company	333.18K	1.55%	$16.57M
Bruce	90.00K	1.39%	$4.47M
Ashford capital management	225.19K	1.25%	$11.20M
Millrace asset group	28.71K	0.92%	$952.00K
Ironwood investment management	31.22K	0.68%	$1.55M
Chapin davis	45.70K	0.56%	$2.27M
Manatuck hill partners	29.10K	0.48%	$1.45M

Top Buyers

Holder	Shares	% Assets	Change
Blackrock funding, inc. /de	3.71M	0.00%	288.66K
Millennium management	264.61K	0.01%	259.02K
Arrowstreet capital, limited partnership	267.88K	0.01%	254.63K
Herald investment management	250.00K	1.65%	250.00K
Nuveen	285.42K	0.00%	119.72K

Top Sellers

Holder	Shares	% Assets	Change
Wealthfront advisers	-	-	-1.65M
Brown capital management	-	-	-737.04K
Capital investors	-	-	-378.10K
Summit partners public asset management	-	-	-368.10K
Jpmorgan chase	4.13M	0.01%	-316.76K

New Positions

Holder	Shares	% Assets	Change	Value
Herald investment management	250.00K	1.65%	250.00K	$12.41M
Marshall wace, llp	56.53K	0.00%	56.53K	$2.81M
Norges bank	55.11K	0.00%	55.11K	$2.66M
Millrace asset group	28.71K	0.92%	28.71K	$952.00K
Summit global investments	21.13K	0.06%	21.13K	$1.05M

Sold Out

Holder	Change
Global financial private client	-1.00
Nelson, van denburg & campbell wealth management group	-4.00
Ifp advisors	-4.00
Bell investment advisors	-9.00
Stephens consulting	-10.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	217	5.34%	19,637,747	8.14%	43	2.66%	105	14.13%	62	-10.14%
Jun 30, 2025	209	-6.70%	18,590,320	-6.64%	41	2.12%	93	-21.19%	70	14.75%
Mar 31, 2025	5	-97.63%	785,103	-96.31%	1	0.08%	5	-94.95%	-	-100.00%
Dec 31, 2024	198	5.88%	19,528,917	2.45%	43	2.36%	94	16.05%	54	-8.47%
Sep 30, 2024	187	3.89%	19,062,499	1.70%	42	2.42%	81	-	59	-7.81%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Small-Cap ETF	1.37M	3.06%	-
JPM US Technology A (dist) USD	1.31M	2.92%	-17.75K
Vanguard Total Stock Mkt Idx Inv	730.24K	1.63%	-16.20K
Vanguard US Total Market Shares ETF	713.54K	1.58%	-
Vanguard Small Cap Index	568.43K	1.27%	-3.78K
iShares Russell 2000 ETF	561.85K	1.25%	-
Needham Aggressive Growth Retail	511.50K	1.13%	-2.50K
JPMorgan Small Cap Growth A	450.98K	1.00%	-4.86K
American Funds SMALLCAP World A	378.10K	0.84%	-
JPMorgan U.S. Tech Leaders ETF	350.88K	0.78%	2.91K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Oct 24, 2025	Tuozzolo Claudio	Corp. Vice President	Sell	$46.73K
Oct 24, 2025	Davies Philip D	VP Global Sales & Marketing	Sell	$1.38M
Oct 24, 2025	Davies Philip D	VP Global Sales & Marketing	Sell	$74.01K
Oct 23, 2025	Morrison Kemble D	VP-Corporate Controller	Sell	$67.85K
Oct 23, 2025	Grava Nancy L	VP Human Resources	Sell	$180.55K

Insider Transactions Trends

Date	Buy	Sell
2023 Q4	-	-
2023 Q3	1	13
2023 Q2	-	2
2023 Q1	1	6
2022 Q4	-	1

VICR Ownership FAQ

Who owns the most shares of Vicor?

Vicor’s largest shareholders are Jpmorgan chase (4.13M shares, 9.13%), Blackrock funding, inc. /de (3.71M shares, 8.20%), and Blackrock (3.4M shares, 7.63%). Together, they hold 24.96% of Vicor’s total shares outstanding.

Does Blackrock own Vicor?

Yes, BlackRock owns 7.63% of Vicor, totaling 3.4M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 112.61M$. In the last quarter, BlackRock decreased its holdings by -40.162K shares, a -1.17% change.

Who is Vicor’s biggest shareholder by percentage of total assets invested?

Colrain capital is Vicor’s biggest shareholder by percentage of total assets invested, with 7.20% of its assets in 254.14K Vicor shares, valued at 12.64M$.

Who is the top mutual fund holder of Vicor shares?

iShares Core S&P Small-Cap ETF is the top mutual fund holder of Vicor shares, with 3.06% of its total shares outstanding invested in 1.37M Vicor shares.

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