Portolan Capital Management’s Tower Semiconductor TSEM Stock Holding History

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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$7.96M	Sell	30,557 -1,486	-5%	-$356K	0.3%	94
2026 Q1	$5.62M	Sell	32,043 -116,482	-78%	-$15.7M	0.3%	92
2025 Q4	$17.4M	Sell	148,525 -178,780	-55%	-$17.2M	0.93%	32
2025 Q3	$23.7M	Buy	327,305 +217,673	+199%	+$11.9M	1.28%	22
2025 Q2	$4.75M	Buy	+109,632	New	+$4.21M	0.3%	87
2025 Q1	–	Sell	-74,707	Closed	-$3.85M	–	146
2024 Q4	$3.85M	Buy	+74,707	New	+$3.5M	0.26%	101
2016 Q1	–	Sell	-543,278	Closed	-$7.64M	–	134
2015 Q4	$7.64M	Sell	543,278 -465,180	-46%	-$6.72M	0.97%	29
2015 Q3	$13M	Buy	1,008,458 +611,484	+154%	+$8.22M	1.72%	11
2015 Q2	$6.13M	Buy	396,974 +114,079	+40%	+$1.83M	0.86%	42
2015 Q1	$4.8M	Buy	+282,895	New	+$4.34M	0.88%	45

Other funds holding TSEM

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

Clal Insurance Tel-Aviv, Israel $22.3B AUM 79.91% 1-Year Est. Return

Phoenix Financial Givatayim, Israel $14.6B AUM 57.48% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

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

UIM

USS Investment Management London, United Kingdom $27.8B AUM 39.42% 1-Year Est. Return

HIIFS

Harel Insurance Investments & Financial Services Ramat Gan, Israel $20.6B AUM 59.59% 1-Year Est. Return

Senvest Management New York $3.41B AUM 66.27% 1-Year Est. Return

MIFH

Migdal Insurance & Financial Holdings Petach Tikva, Israel $15.6B AUM 71.29% 1-Year Est. Return

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

Portolan Capital Management reduced its Tower Semiconductor (TSEM) stake by 4.6% in Q2 2026, selling an estimated $356K and leaving 30,557 shares worth $7.96M. The position accounts for 0.3% of the portfolio, ranked #94.

Portolan Capital Management first reported a position in TSEM in Q1 2015 and has held it in 10 quarters since. The position peaked at $23.7M in Q3 2025. 452 funds tracked by Wall St. Rank hold TSEM as of Q2 2026.

Portolan Capital Management held 30,557 shares of Tower Semiconductor worth $7.96M as of Q2 2026.
Portolan Capital Management sold 1,486 Tower Semiconductor shares in Q2 2026, an estimated $356K.
Tower Semiconductor made up 0.3% of Portolan Capital Management's portfolio in Q2 2026, its #94 holding.
Portolan Capital Management first reported a position in Tower Semiconductor in Q1 2015 and has held it in 10 quarters since.
Portolan Capital Management's Tower Semiconductor position peaked at $23.7M in Q3 2025.
452 funds tracked by Wall St. Rank held Tower Semiconductor as of Q2 2026.

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