Jane Street’s Xoma XOMA Stock Holding History

Jane Street’s Portfolio XOMA Stock Details XOMA Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$455K	Buy	+14,519	New	+$389K	﹤0.01%	8275
2025 Q4	–	Sell	-27,363	Closed	-$1.05M	–	12580
2025 Q3	$1.05M	Buy	+27,363	New	+$850K	﹤0.01%	6199
2023 Q2	–	Sell	-31,497	Closed	-$665K	–	9691
2023 Q1	$665K	Buy	+31,497	New	+$662K	﹤0.01%	5802
2020 Q3	–	Sell	-12,266	Closed	-$242K	–	8043
2020 Q2	$242K	Buy	+12,266	New	+$269K	﹤0.01%	6141
2018 Q1	–	Sell	-9,965	Closed	-$355K	–	5500
2017 Q4	$355K	Buy	+9,965	New	+$270K	﹤0.01%	3576
2015 Q4	–	Sell	-5,782	Closed	-$87K	–	4550
2015 Q3	$87K	Buy	5,782 +4,711	+440%	+$149K	﹤0.01%	3387
2015 Q2	$83K	Buy	+1,071	New	+$77.1K	﹤0.01%	3463
2015 Q1	–	Sell	-1,252	Closed	-$90K	–	3550
2014 Q4	$90K	Buy	1,252 +585	+88%	+$50.1K	﹤0.01%	2346
2014 Q3	$56K	Buy	+667	New	+$56.9K	﹤0.01%	2412
2013 Q3	–	Sell	-1,392	Closed	-$101K	–	3185
2013 Q2	$101K	Buy	+1,392	New	+$104K	﹤0.01%	2436

Other funds holding XOMA

BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

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

Woodline Partners San Francisco, California $26.4B AUM 44.85% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Opaleye Management Boston, Massachusetts $759M AUM 124.8% 1-Year Est. Return

GKIM

GW&K Investment Management Boston, Massachusetts $11.3B AUM 31.98% 1-Year Est. Return

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

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Jane Street's XOMA Position: Q1 2026 in Review

Jane Street opened a new position in Xoma (XOMA) in Q1 2026: 14,519 shares worth $455K. The stake represents ﹤0.01% of the portfolio and ranks #8275 among its holdings. This is a return to the name: Jane Street previously reported a position in XOMA as recently as Q3 2025.

Jane Street first reported a position in XOMA in Q2 2013 and has held it in 10 quarters since. The position peaked at $1.05M in Q3 2025. 85 funds tracked by Wall St. Rank hold XOMA as of Q1 2026.

Jane Street held 14,519 shares of Xoma worth $455K as of Q1 2026.
Xoma was a new Jane Street position in Q1 2026.
Xoma made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #8275 holding.
Jane Street first reported a position in Xoma in Q2 2013 and has held it in 10 quarters since.
Jane Street's Xoma position peaked at $1.05M in Q3 2025.
85 funds tracked by Wall St. Rank held Xoma as of Q1 2026.

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