Simplex Trading
XOMA

Simplex Trading’s Xoma XOMA Stock Holding History

Simplex Trading’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
Q2 		$353K Buy
8,300
+8,100
+4,050% +$328K ﹤0.01% 4032
2026
Q1 		$6.27K Buy
200
+100
+100% +$2.68K ﹤0.01% 7732
2025
Q4 		$2.66K Sell
100
-200
-67% -$6.44K ﹤0.01% 7733
2025
Q3 		$11K Buy
+300
New +$9.32K ﹤0.01% 7846
2024
Q2 		– Sell
-100
Closed -$2K – 9984
2024
Q1 		$2K Sell
100
-2,900
-97% -$65K ﹤0.01% 8483
2023
Q4 		$55K Buy
+3,000
New +$49.4K ﹤0.01% 6001
2022
Q1 		– Sell
-2,000
Closed -$41K – 11540
2021
Q4 		$41K Buy
+2,000
New +$46.8K ﹤0.01% 7509
2016
Q4 		– Sell
-4
Closed -$7K – 6646
2016
Q3 		$7K Hold
4
– – ﹤0.01% 4004
2016
Q2 		$5K Buy
4
+3
+300% +$43 ﹤0.01% 4291
2016
Q1 		$4K Hold
1
– – ﹤0.01% 4320
2015
Q4 		$5K Sell
1
-7
-88% -$179 ﹤0.01% 3916
2015
Q3 		$37K Sell
8
-5
-38% -$158 ﹤0.01% 2240
2015
Q2 		$22K Sell
13
-4
-24% -$288 ﹤0.01% 2384
2015
Q1 		$24K Buy
17
+9
+113% +$661 ﹤0.01% 2184
2014
Q4 		$26K Buy
+8
New +$686 ﹤0.01% 1863

Other funds holding XOMA

BI
BVF Inc San Francisco, California $3.91B AUM 304.52% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
WP
Woodline Partners San Francisco, California $32.4B AUM 58.5% 1-Year Est. Return
NM
Newtyn Management New York $801M AUM 23.14% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
OM
Opaleye Management Boston, Massachusetts $1.1B AUM 197.64% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
WIC
Water Island Capital New York $1.08B AUM 105.75% 1-Year Est. Return

Simplex Trading's XOMA Position: Q2 2026 in Review

Simplex Trading opened a new position in Xoma (XOMA) in Q2 2026: 4,891 shares worth $208K. The stake represents ﹤0.01% of the portfolio and ranks #4669 among its holdings. This is a return to the name: Simplex Trading previously reported a position in XOMA as recently as Q4 2025.

Simplex Trading first reported a position in XOMA in Q4 2014 and has held it in 13 quarters since. The position peaked at $424K in Q2 2015. 98 funds tracked by Wall St. Rank hold XOMA as of Q2 2026.

  • Simplex Trading held 4,891 shares of Xoma worth $208K as of Q2 2026.
  • Xoma was a new Simplex Trading position in Q2 2026.
  • Xoma made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #4669 holding.
  • Simplex Trading first reported a position in Xoma in Q4 2014 and has held it in 13 quarters since.
  • Simplex Trading's Xoma position peaked at $424K in Q2 2015.
  • 98 funds tracked by Wall St. Rank held Xoma as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.