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OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) — 13F Holdings & Portfolio

CIK 1132716 · latest 13F-HR filed 2026-02-13

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OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) manages $857.8M in 13F-reported U.S. long-equity assets across 221 reported positions as of its 2025-12-31 13F-HR filing. Its largest disclosed positions are SCIE (10.92%), CDTX (8.12%), SYNOVUS FI (4.08%). Quarter over quarter (versus its 2025-09-30 filing) the fund opened 64 new positions and exited 94; 21 existing positions rose in reported value and 45 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

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AUM
$857.8M

Long-equity book

Holdings
221

Distinct positions

Period
2025-12-31

Filed 2026-02-13

Q/Q Activity
+64 / −94 / ↑21 / ↓45

vs 2025-09-30

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q4 25
GTLS100.0% · +44%

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q3 25 → Q4 25

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

5 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 100%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People
Name Title / Status Ownership Type

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

Top Adds (vs prior quarter)

Show all 21 →

Top Trims

Show all 45 →

New Positions

Show all 64 →

Exited Positions

Show all 94 →

OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) Holdings (2025-12-31)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 EXACT SCIE SCIE 30063PAB1 $93.7M 10.92% 90,000,000 PRN
2 CIDARA THE CDTX 171757206 $69.7M 8.12% 315,474 SH
3 SYNOVUS FI — 87161C501 $35.0M 4.08% 699,181 SH
4 BROADCOM I AVGO 11135F101 $27.3M 3.18% 78,896 SH
5 PELOTON IN — 70614WAB6 $27.1M 3.16% 27,352,000 PRN
6 MATTEL INC MAT 577081102 $19.3M 2.25% 973,829 SH
7 SNOWFLAKE SNOW 833445AD1 $19.0M 2.22% 12,300,000 PRN
8 DRAFTKINGS DKNG 26142RAB0 $18.3M 2.14% 20,000,000 PRN
9 NVIDIA COR NVDA 67066G104 $18.1M 2.11% 97,116 SH
10 AMERICAN E AEP 025537101 $15.0M 1.75% 130,250 SH
11 CENTERPOIN CNP 15189T107 $14.6M 1.71% 381,495 SH
12 ALLIANT EN LNT 018802108 $14.6M 1.70% 224,205 SH
13 AMICUS THE FOLD 03152W109 $14.2M 1.66% 1,000,000 SH
14 CRH PLC CRH G25508105 $13.7M 1.60% 109,645 SH
15 PARKER-HAN PH 701094104 $13.6M 1.58% 15,460 SH
16 WASTE MGMT WM 94106L109 $13.6M 1.58% 61,675 SH
17 ISHARES TR IWM 464287655 $12.8M 1.49% 52,000 SH
18 BOEING CO BA 097023105 $11.2M 1.30% 51,535 SH
19 CROCS INC CROX 227046109 $10.6M 1.24% 124,000 SH
20 FIRSTENERG FE 337932AR8 $10.2M 1.19% 10,000,000 PRN
21 TALEN ENER TLN 87422Q109 $9.8M 1.15% 26,225 SH
22 NEXTERA EN NEE 65339F101 $8.8M 1.02% 109,300 SH
23 B2GOLD COR BTG 11777Q209 $8.3M 0.97% 1,842,462 SH
24 PALO ALTO PANW 697435105 $8.3M 0.97% 45,000 SH
25 SOUTHERN C SO 842587DZ7 $8.0M 0.93% 7,500,000 PRN
26 ALPHABET I GOOGL 02079K305 $7.8M 0.91% 25,010 SH
27 JENA ACQUI JENA G5093B105 $7.1M 0.83% 700,000 SH
28 TOAST INC TOST 888787108 $7.1M 0.83% 200,000 SH
29 KNIGHT-SWI KNX 499049104 $7.0M 0.82% 133,935 SH
30 TESLA INC TSLA 88160R101 $6.1M 0.71% 13,617 SH
31 TE CONNECT TEL G87052109 $6.0M 0.70% 26,355 SH
32 FUTU HLDGS FUTU 36118L106 $5.9M 0.69% 36,021 SH
33 UNITED AIR UAL 910047109 $5.6M 0.65% 50,000 SH
34 SAIA INC SAIA 78709Y105 $5.2M 0.60% 15,840 SH
35 EGH ACQUIS EGHA G2946P100 $5.1M 0.59% 500,000 SH
36 MERCADOLIB MELI 58733R102 $5.0M 0.59% 2,500 SH
37 FLOWSERVE FLS 34354P105 $5.0M 0.59% 72,341 SH
38 HONEYWELL HON 438516106 $5.0M 0.58% 25,712 SH
39 LIVE NATIO LYV 538034109 $4.9M 0.57% 34,200 SH
40 GORES HLDG GTEN G4002F109 $4.9M 0.57% 474,941 SH
41 CANTOR EQU CEPV G1828S109 $4.6M 0.54% 450,000 SH
42 AXALTA COA AXTA G0750C108 $4.5M 0.53% 140,600 SH
43 ENTERGY CO ETR 29364G103 $4.5M 0.53% 48,830 SH
44 UNITED REN URI 911363109 $4.4M 0.51% 5,400 SH
45 AGRICULTUR ANSC G0131Y100 $4.3M 0.50% 384,160 SH
46 BOOKING HO BKNG 09857L108 $4.3M 0.50% 800 SH
47 CONSTELLAT CEG 21037T109 $4.3M 0.50% 12,100 SH
48 LUCID GROU Put LCID 549498202 $4.1M 0.48% 2,777,800 SH
49 HOWMET AER HWM 443201108 $4.1M 0.48% 20,000 SH
50 DELTA AIR DAL 247361702 $4.1M 0.48% 58,731 SH
Filing History
Period Filed AUM Holdings Accession
2025-12-31 2026-03-04 $72.3M 1 0001132716-26-000009
2025-12-31 2026-08-14 $380.2M 1 0001132716-26-000017
2025-12-31 2026-02-13 $857.8M 221 0001132716-26-000004
2025-09-30 2026-08-14 $286.5M 2 0001132716-26-000016
2025-09-30 2026-01-15 $1.66B 263 0001132716-26-000002
2025-06-30 2026-05-15 $219.5M 1 0001132716-26-000013
2025-03-31 2026-05-15 $188.4M 1 0001132716-26-000014
2024-12-31 2026-02-13 $143.5M 1 0001132716-26-000008
Filer Information
Address
ONE NORTH WACKER DRIVE 31ST FLOOR
CHICAGO, IL 60606
Phone
(312) 525-6000
Filing Manager
OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC)
CHICAGO, IL
Signatory
Peter Gyr
CCO UBS Asset Management (Americas)