We are live on ! Find out more
XOMA

Xoma
XOMA

Delisted

XOMA was delisted on the 13th of July, 2026.

Back to rankings

85 hedge funds and large institutions have $313M invested in Xoma in 2026 Q1 according to their latest regulatory filings, with 21 funds opening new positions, 28 increasing their positions, 16 reducing their positions, and 9 closing their positions.

New
Increased
Maintained
Reduced
Closed

33,783% more call options, than puts

Call options by funds: $2.03M | Put options by funds: $6K

133% more first-time investments, than exits

New positions opened: 21 | Existing positions closed: 9

75% more repeat investments, than reductions

Existing positions increased: 28 | Existing positions reduced: 16

36% more capital invested

Capital invested by funds: $230M → $313M (+$83.2M)

15% more funds holding

Funds holding: 74 → 85 (+11)

14.18% more ownership

Funds ownership: 69.72% → 83.9% (+14%)

0% more funds holding in top 10

Funds holding in top 10: 1 → 1 (0)

Holders
85
Holders Change
+11
Holders Change %
+14.86%
% of All Funds
1.05%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
21
Increased
28
Reduced
16
Closed
9
Calls
$2.03M
Puts
$6K
Net Calls
+$2.03M
Net Calls Change
+$2.01M

Top Buyers

1
WP
Woodline Partners
California
+$10.1M
2
GKIM
GW&K Investment Management
Massachusetts
+$6.22M
3
Millennium Management
Millennium Management
New York
+$5.49M
4
Fidelity Investments
Fidelity Investments
Massachusetts
+$3.78M
5
Citadel Advisors
Citadel Advisors
Florida
+$2.64M

Top Sellers

1
HS
HighVista Strategies
Massachusetts
-$1.77M
2
SCM
Stonepine Capital Management
Oregon
-$1.22M
3
Renaissance Technologies
Renaissance Technologies
New York
-$1.04M
4
Wellington Management Group
Wellington Management Group
Massachusetts
-$787K
5
Los Angeles Capital Management
Los Angeles Capital Management
California
-$513K
Name Holding Trade Value Shares
Change 		Change in
Stake
MASM
76
MH & Associates Securities Management
California
$628 – – –
Nisa Investment Advisors
77
Nisa Investment Advisors
Missouri
$596 – – –
SS
78
SBI Securities
Japan
$439 +$54 +2 +17%
RFP
79
Root Financial Partners
California
$408 +$348 +13 New
LFG
80
Larson Financial Group
Missouri
$314 +$268 +10 New
TWD
81
True Wealth Design
Ohio
$126 +$27 +1 +33%
AF
82
Allworth Financial
California
$95 -$187 -7 -70%
RIL
83
Rothschild Investment LLC
Illinois
$94 – – –
TWC
84
TD Waterhouse Canada
Ontario, Canada
$33 – – –
MCM
85
MAI Capital Management
Ohio
$32 +$27 +1 New
Renaissance Technologies
86
Renaissance Technologies
New York
– -$1.04M -39,017 Closed
Wellington Management Group
87
Wellington Management Group
Massachusetts
– -$787K -29,591 Closed
Squarepoint
88
Squarepoint
New York
– -$237K -8,901 Closed
SG Americas Securities
89
SG Americas Securities
New York
– -$169K -6,356 Closed
Federated Hermes
90
Federated Hermes
Pennsylvania
– -$8.91K -335 Closed
AB
91
Amalgamated Bank
New York
– -$8K -298 Closed
Simplex Trading
92
Simplex Trading
Illinois
– -$4.63K -173 Closed
AAP
93
Arax Advisory Partners
Colorado
– -$80 -3 Closed
IA
94
IFP Advisors
Florida
– -$27 -1 Closed
1 2 3
4

XOMA Hedge Fund Activity: Q1 2026 in Review

85 of the 8,125 institutional investors tracked by Wall St. Rank reported a position in Xoma (XOMA) for Q1 2026, worth a combined $313M — up 36% from $230M a quarter earlier.

Buyers outnumbered sellers: 21 funds opened new XOMA positions and 9 closed out — a net gain of 12 holders — while 28 added to existing stakes and 16 trimmed.

The largest buyer was Woodline Partners, adding an estimated $10.1M. The largest seller was HighVista Strategies, cutting an estimated $1.77M.

  • 85 institutional investors held Xoma (XOMA) as of Q1 2026, up from 74 in Q4 2025.
  • Funds reported $313M of Xoma stock for Q1 2026, up 36% quarter-over-quarter.
  • 21 funds opened new Xoma positions in Q1 2026 and 9 closed out, a net change of +12 holders.
  • The largest Xoma buyer in Q1 2026 was Woodline Partners, an estimated $10.1M added.
  • The largest Xoma seller in Q1 2026 was HighVista Strategies, an estimated $1.77M sold.

Based on aggregated 13F filings for Q1 2026.