Jane Street’s FormFactor FORM Stock Holding History

Jane Street’s Portfolio FORM Stock Details FORM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$1.2M	Buy	12,400 +5,900	+91%	+$508K	﹤0.01%	6116
2025 Q4	$363K	Sell	6,500 -5,400	-45%	-$272K	﹤0.01%	8407
2025 Q3	$433K	Buy	+11,900	New	+$383K	﹤0.01%	8154
2022 Q2	–	Sell	-4,800	Closed	-$202K	–	10029
2022 Q1	$202K	Buy	+4,800	New	+$200K	﹤0.01%	9021
2021 Q2	–	Sell	-7,800	Closed	-$352K	–	9958
2021 Q1	$352K	Sell	7,800 -100	-1%	-$4.55K	﹤0.01%	7435
2020 Q4	$340K	Buy	+7,900	New	+$285K	﹤0.01%	6241

Other funds holding FORM

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

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

EARNEST Partners Atlanta, Georgia $24.3B AUM 34.41% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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

Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return

PCH

Polar Capital Holdings London, United Kingdom $28.2B AUM 115.26% 1-Year Est. Return

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

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

SEI Investments Oaks, Pennsylvania $108B AUM 26.14% 1-Year Est. Return

Jane Street's FORM Position: Q1 2026 in Review

Jane Street increased its FormFactor (FORM) stake by 681% in Q1 2026, buying an estimated $69.5M and bringing the position to 925,617 shares worth $89.8M. The position accounts for 0.01% of the portfolio, ranked #693.

Jane Street first reported a position in FORM in Q2 2013 and has held it in 23 quarters since. 393 funds tracked by Wall St. Rank hold FORM as of Q1 2026.

Jane Street held 925,617 shares of FormFactor worth $89.8M as of Q1 2026.
Jane Street bought 807,083 FormFactor shares in Q1 2026, an estimated $69.5M.
FormFactor made up 0.01% of Jane Street's portfolio in Q1 2026, its #693 holding.
Jane Street first reported a position in FormFactor in Q2 2013 and has held it in 23 quarters since.
393 funds tracked by Wall St. Rank held FormFactor as of Q1 2026.

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