TA
XOMA

TLS Advisors’s Xoma XOMA Stock Holding History

TLS Advisors’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 		$3.6M Buy
114,867
+66,944
+140% +$1.79M 8.55% 5
2025
Q4 		$1.69M Sell
47,923
-66,944
-58% -$2.15M 4.43% 7
2025
Q3 		$3.79M Sell
114,867
-4,177
-4% -$130K 11.01% 5
2025
Q2 		$3M Hold
119,044
– – 9.36% 5
2025
Q1 		$2.37M Hold
119,044
– – 5.36% 6
2024
Q4 		$3.13M Sell
119,044
-700
-0.6% -$20.5K 7.15% 6
2024
Q3 		$3.17M Sell
119,744
-621
-0.5% -$16.8K 6.7% 6
2024
Q2 		$2.85M Hold
120,365
– – 7.14% 6
2024
Q1 		$2.9M Sell
120,365
-100
-0.1% -$2.24K 6.74% 7
2023
Q4 		$2.23M Sell
120,465
-200
-0.2% -$3.29K 7.4% 5
2023
Q3 		$1.7M Hold
120,665
– – 6.88% 5
2023
Q2 		$2.28M Buy
120,665
+200
+0.2% +$3.75K 9.78% 4
2023
Q1 		$2.54M Sell
120,465
-3,559
-3% -$74.8K 13.08% 3
2022
Q4 		$2.28M Buy
+124,024
New +$2.25M 11.25% 3

Other funds holding XOMA

BI
BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
WP
Woodline Partners San Francisco, California $26.4B AUM 44.85% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
OM
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
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

TLS Advisors's XOMA Position: Q1 2026 in Review

TLS Advisors increased its Xoma (XOMA) stake by 140% in Q1 2026, buying an estimated $1.79M and bringing the position to 114,867 shares worth $3.6M. The position accounts for 8.55% of the portfolio, ranked #5.

TLS Advisors first reported a position in XOMA in Q4 2022 and has held it in 14 quarters since. The position peaked at $3.79M in Q3 2025. 85 funds tracked by Wall St. Rank hold XOMA as of Q1 2026.

  • TLS Advisors held 114,867 shares of Xoma worth $3.6M as of Q1 2026.
  • TLS Advisors bought 66,944 Xoma shares in Q1 2026, an estimated $1.79M.
  • Xoma made up 8.55% of TLS Advisors's portfolio in Q1 2026, its #5 holding.
  • TLS Advisors first reported a position in Xoma in Q4 2022 and has held it in 14 quarters since.
  • TLS Advisors's Xoma position peaked at $3.79M in Q3 2025.
  • 85 funds tracked by Wall St. Rank held Xoma as of Q1 2026.

Based on TLS Advisors's 13F filing for Q1 2026, filed 13 May 2026.