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OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC)

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$3.76B
Positions
236
Quarter ended
December 31, 2025
Filed
August 14, 2026

Reported portfolio value by quarter (54 quarters reported)

$1.72T $496M
Q3 12 Q2 15 Q1 18 Q4 20 Q3 23 Q4 25

$50B in Q3 2012 → $3.76B now. Hover for any quarter.

Holdings

As reported for the quarter ended December 31, 2025. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
CS Cyberark S 12.4% Added 5.3% 1,040,571 $464M
CI Chart Inds 10.1% Added 44% 1,843,737 $380M
CI Comerica I 7.7% New 3,311,960 $288M
DI Dayforce I 7.5% New 4,096,708 $283M
AB Avidity Bi 7.1% New 3,716,597 $268M
FC Frontier C 7.0% Added 17% 6,901,367 $263M
AL Air Lease 5.2% Added 272% 3,039,453 $195M
HI Hologic In 5.2% New 2,605,031 $194M
ES Exact Scie 4.8% New 1,779,212 $181M
CB Cadence Ba 3.3% New 2,916,809 $125M
C Confluent 3.2% New 3,970,660 $120M
ES Exact Scie 2.5% New 90,000,000 $93.7M
KG Klarna Gro 1.9% New 2,501,675 $72.3M
C Cidara The 1.9% New 315,474 $69.7M
SA Sealed Air 1.3% New 1,195,854 $49.5M
SF Synovus Fi 0.9% New 699,181 $35M
BI Broadcom I 0.7% Added 892% 78,896 $27.3M
PI Peloton In 0.7% Unchanged 27,352,000 $27.1M
M Mattel Inc 0.5% Added 3.2% 973,829 $19.3M
Snowflake 0.5% Added 392% 12,300,000 $19M
Draftkings 0.5% Trimmed 9.1% 20,000,000 $18.3M
NC Nvidia Cor 0.5% Trimmed 48% 97,116 $18.1M
AE American E 0.4% Added 210% 130,250 $15M
C Centerpoin 0.4% Trimmed 1.6% 381,495 $14.6M
AE Alliant En 0.4% Trimmed 26% 224,205 $14.6M
A Amicus The 0.4% New 1,000,000 $14.2M
Crh PLC 0.4% New 109,645 $13.7M
P Parker-han 0.4% New 15,460 $13.6M
WM Waste Mgmt 0.4% New 61,675 $13.6M
IT Ishares Tr 0.3% New 52,000 $12.8M
Boeing Co 0.3% New 51,535 $11.2M
Crocs Inc 0.3% Unchanged 124,000 $10.6M
F Firstenerg 0.3% Unchanged 10,000,000 $10.2M
TE Talen Ener 0.3% New 26,225 $9.83M
NE Nextera En 0.2% New 109,300 $8.77M
BC B2gold Cor 0.2% Trimmed 10% 1,842,462 $8.31M
PA Palo Alto 0.2% New 45,000 $8.29M
SC Southern C 0.2% Trimmed 57% 7,500,000 $8.01M
AI Alphabet I 0.2% New 25,010 $7.83M
PI Plymouth I 0.2% Trimmed 46% 350,677 $7.67M
H Hillenbran 0.2% New 239,227 $7.59M
JA Jena Acqui 0.2% Unchanged 700,000 $7.12M
Toast Inc 0.2% Added 150% 200,000 $7.1M
K Knight-swi 0.2% New 133,935 $7M
Tesla Inc 0.2% Added 15% 13,617 $6.12M
TC Te Connect 0.2% New 26,355 $6M
FH Futu Hldgs 0.2% New 36,021 $5.92M
UA United Air 0.1% New 50,000 $5.59M
Saia Inc 0.1% New 15,840 $5.17M
EA Egh Acquis 0.1% Unchanged 500,000 $5.07M
M Mercadolib 0.1% Trimmed 62% 2,500 $5.04M
Flowserve 0.1% New 72,341 $5.02M
H Honeywell 0.1% New 25,712 $5.02M
LN Live Natio 0.1% Trimmed 49% 34,200 $4.87M
GH Gores Hldg 0.1% Trimmed 14% 474,941 $4.87M
CE Cantor Equ 0.1% New 450,000 $4.61M
AC Axalta Coa 0.1% Added 65% 140,600 $4.54M
EC Entergy Co 0.1% Trimmed 77% 48,830 $4.51M
UR United Ren 0.1% Trimmed 38% 5,400 $4.37M
A Agricultur 0.1% Unchanged 384,160 $4.29M

Showing top 60 of 236 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q4 2025

quarter ended December 31, 2025 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
VP Verona Pha Exited −4,283,462 −$457M
K Kellanova Exited −3,533,015 −$290M
CI Comerica I New +3,311,960 +$288M 7.7%
DI Dayforce I New +4,096,708 +$283M 7.5%
AB Avidity Bi New +3,716,597 +$268M 7.1%
HI Hologic In New +2,605,031 +$194M 5.2%
ES Exact Scie New +1,779,212 +$181M 4.8%
MC Mr Cooper Exited −799,969 −$169M
AL Air Lease Added +2,222,043 +$143M 5.2%
I Interpubli Exited −4,730,494 −$132M

Showing the 10 largest of 258 changes.

Q3 2025

quarter ended September 30, 2025 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
CS Cyberark S New +987,814 +$477M 14.3%
VP Verona Pha New +4,283,462 +$457M 13.7%
W Walgreens Exited −25,115,686 −$288M
CI Chart Inds New +1,280,039 +$256M 7.7%
SU Skechers U Exited −3,598,177 −$227M
B Blueprint Exited −1,713,587 −$220M
Championx Exited −7,546,703 −$187M
Ansys Inc Exited −492,829 −$173M
Hess Corp Exited −1,055,429 −$146M
D& Dun & Brad Exited −13,678,842 −$124M

Showing the 10 largest of 400 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 14, 2026

Company Action Shares changed Value of change % of portfolio
DF Discover F Exited −2,389,191 −$408M
I Intra-cell Exited −3,091,133 −$408M
Hess Corp Trimmed −1,856,094 −$257M 4.0%
SU Skechers U New +3,598,177 +$227M 6.2%
B Blueprint Added +1,698,722 +$218M 6.0%
BR Beacon Roo Exited −1,575,016 −$195M
W Walgreens Added +15,003,457 +$172M 7.8%
BG Berry Glob Exited −1,955,816 −$137M
JN Juniper Ne Trimmed −3,250,113 −$130M 3.2%
D& Dun & Brad New +13,678,842 +$124M 3.4%

Showing the 10 largest of 426 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 15, 2026

Company Action Shares changed Value of change % of portfolio
I Intra-cell Added +3,070,849 +$405M 9.6%
Hashicorp Exited −6,858,790 −$235M
Smartsheet Exited −3,854,149 −$216M
DF Discover F Added +1,222,493 +$209M 9.6%
BR Beacon Roo New +1,575,016 +$195M 4.6%
EG Endeavor G Exited −4,612,518 −$144M
W Walgreens New +10,112,229 +$113M 2.7%
SM Summit Mat Exited −2,033,333 −$103M
H& H & E Equi New +1,085,190 +$103M 2.4%
AE Altair Eng Exited −897,580 −$97.9M

Showing the 10 largest of 447 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 13, 2026

Company Action Shares changed Value of change % of portfolio
CI Catalent I Exited −3,856,472 −$234M
MO Marathon O Exited −8,329,434 −$222M
DF Discover F New +1,166,698 +$202M 5.0%
Smartsheet Added +3,354,149 +$188M 5.4%
Stericycle Exited −2,824,521 −$172M
AI Axonics In Exited −2,148,826 −$150M
FC Frontier C Added +3,536,184 +$123M 3.6%
SM Summit Mat New +2,033,333 +$103M 2.6%
AE Altair Eng New +897,580 +$97.9M 2.4%
JN Juniper Ne Added +2,379,409 +$89.1M 7.6%

Showing the 10 largest of 541 changes.

Q3 2024

quarter ended September 30, 2024 · filed November 14, 2025

Company Action Shares changed Value of change % of portfolio
K Kellanova New +3,778,689 +$305M 7.5%
E Equitrans Exited −11,441,637 −$149M
Stericycle Added +2,374,521 +$145M 4.3%
MO Marathon O Added +3,905,897 +$104M 5.5%
Championx Added +3,257,621 +$98.2M 4.6%
SA Spirit Aer New +2,780,079 +$90.4M 2.2%
CT Cerevel Th Exited −2,000,000 −$81.8M
Hashicorp Added +2,174,507 +$73.6M 5.7%
CI Catalent I Added +1,071,806 +$64.9M 5.8%
S Southweste Exited −8,430,201 −$56.7M

Showing the 10 largest of 604 changes.

Q2 2024

quarter ended June 30, 2024 · filed August 14, 2025

Company Action Shares changed Value of change % of portfolio
PN Pioneer Na Exited −2,431,644 −$638M
Hashicorp Added +4,438,951 +$150M 4.4%
EG Endeavor G New +4,789,930 +$129M 3.6%
E Equitrans Added +9,797,129 +$127M 4.2%
MO Marathon O New +4,423,537 +$127M 3.6%
Championx New +2,881,776 +$95.7M 2.7%
CI Catalent I Added +1,060,894 +$59.7M 4.4%
CT Cerevel Th Trimmed −1,230,529 −$50.3M 2.3%
DF Discover F Exited −343,669 −$45.1M
Perficient New +418,022 +$31.3M 0.9%

Showing the 10 largest of 561 changes.

Q1 2024

quarter ended March 31, 2024 · filed May 15, 2025

Company Action Shares changed Value of change % of portfolio
S Splunk Inc Exited −3,680,525 −$561M
JN Juniper Ne New +4,428,704 +$164M 4.7%
AI Axonics In Added +1,897,614 +$131M 3.8%
Ansys Inc New +352,899 +$123M 3.5%
SR Spirit Rlt Exited −2,739,448 −$120M
CI Catalent I New +1,723,772 +$97.3M 2.8%
Hess Corp Added +619,498 +$94.6M 12.8%
US United Sta Added +2,281,664 +$93M 4.3%
CT Cerevel Th Added +1,505,529 +$63.6M 3.9%
Immunogen Exited −1,915,452 −$56.8M

Showing the 10 largest of 559 changes.

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