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 Q2	$14.5M	Buy	38,081 +11,411	+43%	+$3.12M	0.54%	63
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 $6.73T AUM 46.02% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

Manulife (Manufacturers Life Insurance) Canada, Ontario, Canada $128B AUM 35.83% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

Portolan Capital Management's VICR Position: Q2 2026 in Review

Portolan Capital Management increased its Vicor (VICR) stake by 43% in Q2 2026, buying an estimated $3.12M and bringing the position to 38,081 shares worth $14.5M. The position accounts for 0.54% of the portfolio, ranked #63.

Portolan Capital Management first reported a position in VICR in Q1 2014 and has held it in 10 quarters since. 514 funds tracked by Wall St. Rank hold VICR as of Q2 2026.

Portolan Capital Management held 38,081 shares of Vicor worth $14.5M as of Q2 2026.
Portolan Capital Management bought 11,411 Vicor shares in Q2 2026, an estimated $3.12M.
Vicor made up 0.54% of Portolan Capital Management's portfolio in Q2 2026, its #63 holding.
Portolan Capital Management first reported a position in Vicor in Q1 2014 and has held it in 10 quarters since.
514 funds tracked by Wall St. Rank held Vicor as of Q2 2026.

Based on Portolan Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.