Portolan Capital Management’s Vicor VICR Stock Holding History

Portolan Capital Management’s Portfolio VICR Stock Details VICR Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$4.29M	Sell	26,670 -22,051	-45%	-$3.64M	0.23%	109
2025 Q4	$5.34M	Buy	+48,721	New	+$4.14M	0.29%	104
2023 Q4	–	Sell	-66,393	Closed	-$3.91M	–	156
2023 Q3	$3.91M	Sell	66,393 -196,331	-75%	-$13M	0.37%	83
2023 Q2	$14.2M	Buy	+262,724	New	+$13M	1.26%	25
2020 Q4	–	Sell	-6,709	Closed	-$521K	–	187
2020 Q3	$521K	Sell	6,709 -13,456	-67%	-$1.07M	0.06%	133
2020 Q2	$1.45M	Sell	20,165 -14,193	-41%	-$797K	0.17%	118
2020 Q1	$1.53M	Sell	34,358 -119,458	-78%	-$5.66M	0.23%	102
2019 Q4	$7.19M	Buy	+153,816	New	+$5.86M	0.73%	52
2014 Q2	–	Sell	-59,702	Closed	-$609K	–	138
2014 Q1	$609K	Buy	+59,702	New	+$669K	0.14%	116

Other funds holding VICR

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Manulife (Manufacturers Life Insurance) Canada, Ontario, Canada $116B AUM 26.37% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return

NIM

Needham Investment Management New York $1.96B AUM 101.23% 1-Year Est. Return

Portolan Capital Management's VICR Position: Q1 2026 in Review

Portolan Capital Management reduced its Vicor (VICR) stake by 45% in Q1 2026, selling an estimated $3.64M and leaving 26,670 shares worth $4.29M. The position accounts for 0.23% of the portfolio, ranked #109.

Portolan Capital Management first reported a position in VICR in Q1 2014 and has held it in 9 quarters since. The position peaked at $14.2M in Q2 2023. 369 funds tracked by Wall St. Rank hold VICR as of Q1 2026.

Portolan Capital Management held 26,670 shares of Vicor worth $4.29M as of Q1 2026.
Portolan Capital Management sold 22,051 Vicor shares in Q1 2026, an estimated $3.64M.
Vicor made up 0.23% of Portolan Capital Management's portfolio in Q1 2026, its #109 holding.
Portolan Capital Management first reported a position in Vicor in Q1 2014 and has held it in 9 quarters since.
Portolan Capital Management's Vicor position peaked at $14.2M in Q2 2023.
369 funds tracked by Wall St. Rank held Vicor as of Q1 2026.

Based on Portolan Capital Management's 13F filing for Q1 2026, filed 15 May 2026.