L3VLUP
ProSign in

VICR in the 13F filings

Vicor Corp · CUSIP 925815102

Sector · Technology hardware and equipment
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q2 2024Q1 2024Q4 2023Q3 2023Q2 2023
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
28
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 1 listed it in both
Shares listed
4,123,119
combined, among listed positions
Reported value
$659m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 21 buyers (opened or added shares) and 9 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +2,372,933.

Managers listing VICR in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

28 of 28 holders

ActionFiling
T. Rowe Price Associates Inc1,888,446$304munder 0.1%Added+1,448,62615 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP536,274$86munder 0.1%Added+162,18614 May 2026 (the filing on sec.gov)
Jane Street Group LLC327,715$53munder 0.1%Newnew12 May 2026 (the filing on sec.gov)
Millennium Management LLC221,867$36munder 0.1%Added+218,67815 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)165,326$27munder 0.1%Trimmed-46,01415 May 2026 (the filing on sec.gov)
AQR Capital Management LLC148,309$24munder 0.1%Added+66,69015 May 2026 (the filing on sec.gov)
Tudor Investment Corp137,316$22munder 0.1%Added+83,29215 May 2026 (the filing on sec.gov)
Invesco Ltd126,466$20munder 0.1%Trimmed-22,19312 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC85,295$14munder 0.1%Added+23,23413 May 2026 (the filing on sec.gov)
AllianceBernstein LP101,217$11munder 0.1%Added+75,40715 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP60,060$9.7munder 0.1%Added+24,61115 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC47,300$7.6munder 0.1%Added+37,10014 May 2026 (the filing on sec.gov)
Citadel Advisors LLC46,435$7.5munder 0.1%Added+21,87115 May 2026 (the filing on sec.gov)
Man Group PLC35,856$5.8munder 0.1%Added+32,50515 May 2026 (the filing on sec.gov)
Bridgewater Associates LP33,207$5.3munder 0.1%Added+14,11315 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC30,509$4.9munder 0.1%Newnew27 Oct 2026 (the filing on sec.gov)
Janus Henderson Group Ltd30,404$4.9munder 0.1%Trimmed-59,65818 May 2026 (the filing on sec.gov)
Point72 Asset Management LP29,067$4.7munder 0.1%Added+24,34115 May 2026 (the filing on sec.gov)
Polen Capital Management LLC13,899$2.2munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP11,905$1.9munder 0.1%Trimmed-3,92014 May 2026 (the filing on sec.gov)
Two Sigma Investments LP11,752$1.9munder 0.1%Added+7,50015 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC8,526$1.4munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Winton Group Ltd8,494$1.4munder 0.1%Trimmed-4,60112 May 2026 (the filing on sec.gov)
MFS Investment Management5,077$817kunder 0.1%Newnew14 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP4,542$731kunder 0.1%Trimmed-3,67715 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (6)

Exited (2)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
1 in Q2 2024 to 10 in Q2 2026

Tracked managers listing it, at least.

0358102015201720182019202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
VICR by quarter
QuarterHoldersReported valueBuyersSellers
Q1 20151$2.6mn.a.n.a.
Q3 20161$1.8mn.a.n.a.
Q4 20161$2.1mn.a.n.a.
Q1 20171$2.2mn.a.n.a.
Q3 20171$2.2mn.a.n.a.
Q1 20182$2.7mn.a.n.a.
Q2 20182$14mn.a.n.a.
Q3 20181$9.9mn.a.n.a.
Q1 20191$1.5mn.a.n.a.
Q2 20192$1.4mn.a.n.a.
Q3 20201$2.2mn.a.n.a.
Q4 20202$30mn.a.n.a.
Q1 20211$58mn.a.n.a.
Q2 20212$145mn.a.n.a.
Q3 20213$284mn.a.n.a.
Q4 20214$140mn.a.n.a.
Q1 20224$130mn.a.n.a.
Q2 20223$141mn.a.n.a.
Q3 20221$118mn.a.n.a.
Q4 20221$32mn.a.n.a.
Q1 20232$1.2mn.a.n.a.
Q2 20232$6.5mn.a.n.a.
Q3 20233$19mn.a.n.a.
Q4 20232$16m11
Q1 20242$11m11
Q2 20241$921k10
Q4 20241$1.0m10
Q1 20251$1.0m10
Q2 20251$1.0m01
Q3 20251$1.2m10
Q4 20252$2.6m188
Q1 20267$435m219
Q2 202610$1.4bn2015

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

VICR and AAPL →VICR and SNDK →VICR and CSCO →Choose a stock to compare with VICR →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own VICR, latest filings →Back to the 13F Explorer →