Jane Street’s Castellum CTM Stock Holding History

Jane Street’s Portfolio CTM Stock Details CTM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$140K	Sell	236,774 -107,068	-31%	-$95.6K	﹤0.01%	10442
2025 Q4	$311K	Buy	343,842 +8,138	+2%	+$8.69K	﹤0.01%	8763
2025 Q3	$366K	Buy	335,704 +140,971	+72%	+$164K	﹤0.01%	8518
2025 Q2	$204K	Buy	+194,733	New	+$200K	﹤0.01%	8507
2025 Q1	–	Sell	-449,001	Closed	-$898K	–	9588
2024 Q4	$898K	Buy	449,001 +429,310	+2,180%	+$137K	﹤0.01%	5590
2024 Q3	$3.44K	Buy	19,691 +8,472	+76%	+$1.48K	﹤0.01%	9420
2024 Q2	$2.09K	Buy	+11,219	New	+$2.59K	﹤0.01%	9201

Other funds holding CTM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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

MWM

Meridian Wealth Management Lexington, Kentucky $2.85B AUM 31.23% 1-Year Est. Return

CAPTRUST Financial Advisors Raleigh, North Carolina $57.3B AUM 18.32% 1-Year Est. Return

VFT

Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM

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

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

SAI

Savvy Advisors Inc New York $3.75B AUM 21.95% 1-Year Est. Return

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Jane Street's CTM Position: Q1 2026 in Review

Jane Street reduced its Castellum (CTM) stake by 31% in Q1 2026, selling an estimated $95.6K and leaving 236,774 shares worth $140K. The position accounts for ﹤0.01% of the portfolio, ranked #10442.

Jane Street first reported a position in CTM in Q2 2024 and has held it in 7 quarters since. The position peaked at $898K in Q4 2024. 27 funds tracked by Wall St. Rank hold CTM as of Q1 2026.

Jane Street held 236,774 shares of Castellum worth $140K as of Q1 2026.
Jane Street sold 107,068 Castellum shares in Q1 2026, an estimated $95.6K.
Castellum made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #10442 holding.
Jane Street first reported a position in Castellum in Q2 2024 and has held it in 7 quarters since.
Jane Street's Castellum position peaked at $898K in Q4 2024.
27 funds tracked by Wall St. Rank held Castellum as of Q1 2026.

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