Jane Street’s Tempus AI TEM Stock Holding History

Jane Street’s Portfolio TEM Stock Details TEM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$106M	Sell	2,348,200 -1,444,600	-38%	-$82.1M	0.01%	614
2025 Q4	$224M	Sell	3,792,800 -892,600	-19%	-$69.8M	0.03%	321
2025 Q3	$378M	Buy	4,685,400 +150,200	+3%	+$10.5M	0.06%	221
2025 Q2	$288M	Buy	4,535,200 +1,878,500	+71%	+$108M	0.06%	212
2025 Q1	$128M	Buy	2,656,700 +2,369,400	+825%	+$128M	0.03%	306
2024 Q4	$9.7M	Buy	287,300 +62,500	+28%	+$3.09M	﹤0.01%	1913
2024 Q3	$12.7M	Buy	224,800 +153,300	+214%	+$7.17M	﹤0.01%	1670
2024 Q2	$2.5M	Buy	+71,500	New	+$2.19M	﹤0.01%	4118

Other funds holding TEM

AIM

ARK Investment Management St. Petersburg, Florida $12.9B AUM 64.92% 1-Year Est. Return

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

Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return

GWMR

GC Wealth Management RIA Cambridge, Massachusetts $1.73B AUM 16.14% 1-Year Est. Return

SoftBank Group Tokyo, Japan $11.4B AUM 27.91% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $154B AUM 29.96% 1-Year Est. Return

NAMA

Nikko Asset Management Americas New York $7.07B AUM 50.91% 1-Year Est. Return

Jane Street's TEM Position: Q1 2026 in Review

Jane Street increased its Tempus AI (TEM) stake by 198% in Q1 2026, buying an estimated $25.2M and bringing the position to 668,854 shares worth $30.2M. The position accounts for ﹤0.01% of the portfolio, ranked #1433.

Jane Street first reported a position in TEM in Q2 2024 and has held it in 8 quarters since. The position peaked at $40.7M in Q3 2025. 425 funds tracked by Wall St. Rank hold TEM as of Q1 2026.

Jane Street held 668,854 shares of Tempus AI worth $30.2M as of Q1 2026.
Jane Street bought 444,124 Tempus AI shares in Q1 2026, an estimated $25.2M.
Tempus AI made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #1433 holding.
Jane Street first reported a position in Tempus AI in Q2 2024 and has held it in 8 quarters since.
Jane Street's Tempus AI position peaked at $40.7M in Q3 2025.
425 funds tracked by Wall St. Rank held Tempus AI as of Q1 2026.

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