Essex Investment Management’s Alpha Pro Tech APT Stock Holding History

Essex Investment Management’s Portfolio APT Stock Details APT Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$153K	Hold	34,375	–	–	0.02%	215
2025 Q4	$153K	Hold	34,375	–	–	0.02%	219
2025 Q3	$164K	Hold	34,375	–	–	0.03%	210
2025 Q2	$161K	Sell	34,375 -407	-1%	-$1.84K	0.03%	204
2025 Q1	$174K	Sell	34,782 -11	-0%	-$59	0.04%	188
2024 Q4	$184K	Sell	34,793 -4,027	-10%	-$22.1K	0.03%	194
2024 Q3	$221K	Hold	38,820	–	–	0.04%	186
2024 Q2	$214K	Sell	38,820 -73,595	-65%	-$411K	0.04%	187
2024 Q1	$701K	Hold	112,415	–	–	0.14%	159
2023 Q4	$595K	Sell	112,415 -44,903	-29%	-$206K	0.12%	170
2023 Q3	$683K	Sell	157,318 -4,761	-3%	-$19.8K	0.11%	221
2023 Q2	$645K	Buy	162,079 +4,351	+3%	+$17.1K	0.09%	244
2023 Q1	$656K	Hold	157,728	–	–	0.1%	241
2022 Q4	$634K	Hold	157,728	–	–	0.1%	231
2022 Q3	$639K	Sell	157,728 -10,819	-6%	-$47.1K	0.1%	224
2022 Q2	$752K	Buy	+168,547	New	+$718K	0.12%	220

Other funds holding APT

NIM

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

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

Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return

Group One Trading Chicago, Illinois $52.2B AUM 104.56% 1-Year Est. Return

BCM

Bridgeway Capital Management Houston, Texas $4.97B AUM 44.96% 1-Year Est. Return

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

Essex Investment Management's APT Position: Q1 2026 in Review

Essex Investment Management held its Alpha Pro Tech (APT) position steady in Q1 2026 at 34,375 shares worth $153K. The position accounts for 0.02% of the portfolio, ranked #215.

Essex Investment Management first reported a position in APT in Q2 2022 and has held it in 16 quarters since. The position peaked at $752K in Q2 2022. 37 funds tracked by Wall St. Rank hold APT as of Q1 2026.

Essex Investment Management held 34,375 shares of Alpha Pro Tech worth $153K as of Q1 2026.
Essex Investment Management left its Alpha Pro Tech share count unchanged in Q1 2026.
Alpha Pro Tech made up 0.02% of Essex Investment Management's portfolio in Q1 2026, its #215 holding.
Essex Investment Management first reported a position in Alpha Pro Tech in Q2 2022 and has held it in 16 quarters since.
Essex Investment Management's Alpha Pro Tech position peaked at $752K in Q2 2022.
37 funds tracked by Wall St. Rank held Alpha Pro Tech as of Q1 2026.

Based on Essex Investment Management's 13F filing for Q1 2026, filed 11 May 2026.