Jane Street’s Alpha Pro Tech APT Stock Holding History

Jane Street’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	$64.4K	Sell	14,500 -6,600	-31%	-$32.4K	﹤0.01%	10872
2025 Q4	$93.7K	Buy	21,100 +7,300	+53%	+$33.6K	﹤0.01%	10222
2025 Q3	$66K	Buy	+13,800	New	+$66K	﹤0.01%	10270
2022 Q2	–	Sell	-32,900	Closed	-$138K	–	9593
2022 Q1	$138K	Sell	32,900 -110,300	-77%	-$513K	﹤0.01%	9281
2021 Q4	$855K	Sell	143,200 -3,700	-3%	-$21.6K	﹤0.01%	6219
2021 Q3	$989K	Buy	+146,900	New	+$1.21M	﹤0.01%	5924
2021 Q2	–	Sell	-46,300	Closed	-$452K	–	9726
2021 Q1	$452K	Buy	46,300 +15,400	+50%	+$204K	﹤0.01%	6986
2020 Q4	$345K	Sell	30,900 -14,000	-31%	-$189K	﹤0.01%	6222
2020 Q3	$664K	Sell	44,900 -339,600	-88%	-$5.76M	﹤0.01%	4736
2020 Q2	$6.81M	Buy	384,500 +225,300	+142%	+$3.11M	0.01%	1510
2020 Q1	$1.92M	Buy	+159,200	New	+$1.33M	﹤0.01%	2061

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

Jane Street's APT Position: Q1 2026 in Review

Jane Street opened a new position in Alpha Pro Tech (APT) in Q1 2026: 25,630 shares worth $114K. The stake represents ﹤0.01% of the portfolio and ranks #10567 among its holdings. This is a return to the name: Jane Street previously reported a position in APT as recently as Q1 2025.

Jane Street first reported a position in APT in Q1 2020 and has held it in 7 quarters since. The position peaked at $2.13M in Q2 2020. 37 funds tracked by Wall St. Rank hold APT as of Q1 2026.

Jane Street held 25,630 shares of Alpha Pro Tech worth $114K as of Q1 2026.
Alpha Pro Tech was a new Jane Street position in Q1 2026.
Alpha Pro Tech made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #10567 holding.
Jane Street first reported a position in Alpha Pro Tech in Q1 2020 and has held it in 7 quarters since.
Jane Street's Alpha Pro Tech position peaked at $2.13M in Q2 2020.
37 funds tracked by Wall St. Rank held Alpha Pro Tech as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.