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

13F Portfolio Filings

Most recent 13F
Q4 2025
13D/G filings
13G on 2 securities
Location
Chicago, IL
CIK
0001132716
Alternate names
UBS OCONNOR LLC
All SEC filings
View on sec.gov
Holdings Value
Quarter Holdings Value ($000) Top Holdings Form Type Date Filed Filing ID
Q4 2025 1 380,233 GTLS NEW HOLDINGS 8/14/2026 000113271626000017
Q4 2025 13 2,446,011 CYBR, CMA, DAY, RNAM NEW HOLDINGS 5/15/2026 000113271626000011
Q4 2025 1 72,323 KLAR NEW HOLDINGS 3/4/2026 000113271626000009
Q4 2025 221 857,835 EXACT SCIE, CDTX, SNV, AVGO 13F-HR 2/13/2026 000113271626000004
Q3 2025 2 286,454 GTLS, EA NEW HOLDINGS 8/14/2026 000113271626000016
Q3 2025 4 780,438 CYBR, FYBR, AL, ELME NEW HOLDINGS 5/15/2026 000113271626000012
Q3 2025 5 616,058 K, IPG, INFA, MRUS NEW HOLDINGS 2/13/2026 000113271626000005
Q3 2025 263 1,658,033 VRNA, COOP, SPR, NVDA RESTATEMENT 1/15/2026 000113271626000002
Q2 2025 1 90,448 LBRDK NEW HOLDINGS 8/14/2026 000113271626000015
Q2 2025 1 219,473 FYBR NEW HOLDINGS 5/15/2026 000113271626000013
Q2 2025 4 633,717 K, INFA, SPR, IPG NEW HOLDINGS 2/13/2026 000113271626000006
Q2 2025 7 790,665 WBA, SKX, DNB, COOP NEW HOLDINGS 11/14/2025 000113271625000033
Q2 2025 354 1,952,323 BPMC, CHX, ANSS, HES 13F-HR 8/14/2025 000113271625000019
Q1 2025 1 188,382 FYBR NEW HOLDINGS 5/15/2026 000113271626000014
Q1 2025 1 11,982 CCRN NEW HOLDINGS 2/13/2026 000113271626000007
Q1 2025 4 698,503 K, WBA, SPR, AMED NEW HOLDINGS 11/14/2025 000113271625000034
Q1 2025 12 2,103,095 HES, DFS, CHX, JNPR NEW HOLDINGS 8/14/2025 000113271625000020
Q1 2025 304 1,226,992 ITCI, ML, PELOTON IN, OXY 13F-HR 5/15/2025 000113271625000010
Q4 2024 1 143,525 FYBR NEW HOLDINGS 2/13/2026 000113271626000008
Q4 2024 1 93,950 AMED NEW HOLDINGS 11/14/2025 000113271625000035
Q4 2024 8 1,320,512 HES, K, CHX, DFS NEW HOLDINGS 8/14/2025 000113271625000021
Q4 2024 12 1,202,921 JNPR, HCP, SMAR, EDR NEW HOLDINGS 5/15/2025 000113271625000011
Q4 2024 397 1,260,391 SPR, REVANCE TH, CRH, PELOTON IN 13F-HR 2/14/2025 000113271625000004
Q3 2024 1 21,318 FYBR NEW HOLDINGS 11/14/2025 000113271625000036
Q3 2024 4 1,006,262 HES, K, CHX, ANSS NEW HOLDINGS 8/14/2025 000113271625000022
Q3 2024 7 798,798 HCP, JNPR, EDR, X NEW HOLDINGS 5/15/2025 000113271625000012
Q3 2024 8 930,887 CTLT, MRO, SRCL, AXNX NEW HOLDINGS 2/14/2025 000113271625000005
Q3 2024 480 1,295,868 SPR, EQC, REVANCE TH, PELOTON IN 13F-HR 11/14/2024 000113271624000037
Q2 2024 2 567,930 HES, ANSS NEW HOLDINGS 8/14/2025 000113271625000023
Q2 2024 5 705,061 JNPR, HCP, X, EDR NEW HOLDINGS 5/15/2025 000113271625000013
Q2 2024 6 510,231 CTLT, AXNX, MRO, ACI NEW HOLDINGS 2/14/2025 000113271625000006
Q2 2024 4 160,059 CERE, SWN, DO, HA NEW HOLDINGS 11/14/2024 000113271624000038
Q2 2024 521 1,606,519 ETRN, SPIRIT AIR, PRFT, REVANCE TH 13F-HR 8/14/2024 000113271624000030
Q1 2024 5 929,851 HES, JNPR, X, ANSS NEW HOLDINGS 5/15/2025 000113271625000014
Q1 2024 3 281,103 AXNX, CTLT, ACI NEW HOLDINGS 2/14/2025 000113271625000007
Q1 2024 2 179,723 CERE, SWN NEW HOLDINGS 11/14/2024 000113271624000039
Q1 2024 5 701,511 PXD, ETRN, ERF, SP NEW HOLDINGS 8/14/2024 000113271624000031
Q1 2024 495 1,398,170 SPIRIT AIR, PELOTON IN, RYAAY, REVANCE TH 13F-HR 5/15/2024 000113271624000022
Q4 2023 3 436,734 HES, X, ACI NEW HOLDINGS 2/14/2025 000113271625000008
Q4 2023 3 698,541 PXD, CERE, CPRI NEW HOLDINGS 11/14/2024 000113271624000040
Q4 2023 4 656,918 SPLK, IMGN, KRTX, RPT NEW HOLDINGS 5/15/2024 000113271624000027
Q4 2023 494 1,390,411 SRC, SPIRIT AIR, PELOTON IN, RYAAY 13F-HR 2/14/2024 000113271624000016
Q3 2023 1 86,669 CPRI NEW HOLDINGS 8/14/2024 000113271624000032
Q3 2023 2 196,819 SPLK, TWNK NEW HOLDINGS 5/15/2024 000113271624000028
Q3 2023 7 1,368,925 SGEN, VMW, NEWR, DEN NEW HOLDINGS 2/14/2024 000113271624000017
Q3 2023 552 3,969,268 ATVI, HZNP, NATI, SPIRIT AIR 13F-HR 11/14/2023 000113271623000020
Q2 2023 1 93,825 ACI NEW HOLDINGS 8/14/2024 000113271624000033
Q2 2023 1 156,906 VMW NEW HOLDINGS 5/15/2024 000113271624000025
Q2 2023 12 1,327,144 HZNP, SGEN, FOCS, NATI NEW HOLDINGS 2/14/2024 000113271624000018
Q2 2023 2 457,025 ATVI, UNVR NEW HOLDINGS 11/14/2023 000113271623000021
Q2 2023 568 2,712,598 ISEE, PDCE, SYNH, LSI 13F-HR 8/14/2023 000113271623000016
Q1 2023 3 316,878 VMW, ACI, SIMO NEW HOLDINGS 5/15/2024 000113271624000024
Q1 2023 9 643,880 UNVR, AQUA, SGEN, TSEM NEW HOLDINGS 2/14/2024 000113271624000019
Q1 2023 4 774,355 HZNP, ATVI, FOCS, MNTV NEW HOLDINGS 11/14/2023 000113271623000022
Q1 2023 2 208,655 FHN, AUY NEW HOLDINGS 8/14/2023 000113271623000014
Q1 2023 604 2,275,199 PRVB, OAK STR, SPIRIT A, OXYWS 13F-HR 5/15/2023 000113271623000007
Q4 2022 4 530,738 HZNP, VMW, SIMO, TSEM NEW HOLDINGS 2/14/2024 000113271624000020
Q4 2022 5 991,663 ATVI, FHN, SGFY, ONEM NEW HOLDINGS 11/14/2023 000113271623000024
Q4 2022 5 509,933 LHCG, COUP, AAWW, COWN RESTATEMENT 8/14/2023 000113271623000019
Q4 2022 5 509,933 LHCG, COUP, AAWW, COWN NEW HOLDINGS 8/14/2023 000113271623000015
Q3 2022 4 681,259 ATVI, TSEM, SIMO, VMW NEW HOLDINGS 11/14/2023 000113271623000025
Q3 2022 3 301,388 ONEM, FHN, TGNA NEW HOLDINGS 8/14/2023 000113271623000017
Q3 2022 9 1,535,539 ROG, SWCH, STOR, LHCG NEW HOLDINGS 5/15/2023 000113271623000008
Q3 2022 4 1,011,377 ZEN, AVLR, TWTR, CLR NEW HOLDINGS 2/14/2023 000113271623000003
Q3 2022 940 5,268,505 BHVN, CHNG, PING, GBT 13F-HR 11/14/2022 000113271622000019
Q2 2022 4 660,801 ATVI, TSEM, SIMO, VMW NEW HOLDINGS 8/14/2023 000113271623000018
Q2 2022 4 418,612 LHCG, FHN, MGI, TGNA NEW HOLDINGS 5/15/2023 000113271623000009
Q2 2022 13 1,715,865 ROG, BHVN, MNDT, SWCH NEW HOLDINGS 2/14/2023 000113271623000002
Q2 2022 6 1,113,023 CTXS, SAIL, WBT, MTOR NEW HOLDINGS 11/14/2022 000113271622000023
Q2 2022 941 5,708,930 ACC, CDK, COHR, PSB 13F-HR 8/12/2022 000113271622000014
Q1 2022 3 496,204 ATVI, TGNA, TSEM RESTATEMENT 5/15/2023 000113271623000012
Q1 2022 3 66,204 ATVI, TSEM, TGNA NEW HOLDINGS 5/15/2023 000113271623000010
Q1 2022 10 2,700,177 CERN, ROG, CTXS, PLAN NEW HOLDINGS 2/14/2023 000113271623000001
Q1 2022 5 1,024,877 MIME, COHR, WBT, ZNGA NEW HOLDINGS 11/14/2022 000113271622000022
Q1 2022 2 292,168 MGP, ECOL NEW HOLDINGS 8/12/2022 000113271622000018
Q4 2021 5 614,276 COHR, CERN, ROG, VNE NEW HOLDINGS 11/14/2022 000113271622000021
Q4 2021 11 1,287,611 CONE, MGP, VG, MIME NEW HOLDINGS 8/12/2022 000113271622000017
Q4 2021 5 3,139,896 INFO, NUAN, XLNX, FOE NEW HOLDINGS 5/16/2022 000113271622000012
Q4 2021 917 5,350,444 NUAN, ATH, CIT, XLNX 13F-HR 2/14/2022 000113271622000003
Q3 2021 1 1,624 GSKY NEW HOLDINGS 11/14/2022 000113271622000020
Q3 2021 8 1,187,133 KSU, XLNX, CIT, HRC NEW HOLDINGS 8/12/2022 000113271622000016
Q3 2021 20 4,169,748 NUAN, INFO, KSU, PPD NEW HOLDINGS 6/9/2022 000113271622000013
Q3 2021 11 2,172,990 INFO, PPD, VER, ATH NEW HOLDINGS 5/16/2022 000113271622000011
Q3 2021 2 849,674 NUAN, CADE NEW HOLDINGS 2/14/2022 000113271622000007
Q3 2021 893 4,356,845 WTW, MDLA, CLDR, FIVN RESTATEMENT 1/12/2022 000113271622000001
Q2 2021 4 661,080 ATH, XLNX, CHNG, COHR NEW HOLDINGS 8/12/2022 000113271622000015
Q2 2021 10 3,018,547 INFO, NUAN, MXIM, KSU NEW HOLDINGS 5/16/2022 000113271622000010
Q2 2021 2 288,894 PFPT, CIT NEW HOLDINGS 2/14/2022 000113271622000005
Q2 2021 9 1,684,329 MXIM, PPD, VER, GRA NEW HOLDINGS 2/7/2022 000113271622000002
Q2 2021 2 123,583 TLND, CBB NEW HOLDINGS 11/12/2021 000113271621000022
Q2 2021 857 5,428,471 ALXN, WORK, PRAH, PROOFPOI 13F-HR 8/13/2021 000113271621000013
Q1 2021 6 978,918 INFO, KSU, XLNX, CHNG NEW HOLDINGS 5/16/2022 000113271622000009
Q1 2021 3 910,254 WORK, MXIM, ALXN NEW HOLDINGS 2/14/2022 000113271622000004
Q1 2021 7 555,380 GRUB, PRSP, NAV, CMD NEW HOLDINGS 11/12/2021 000113271621000021
Q1 2021 3 356,515 GWPH, CLGX, GLUU NEW HOLDINGS 8/13/2021 000113271621000017
Q1 2021 785 4,139,350 VAR, RP, FLIR, BBL 13F-HR 5/14/2021 000113271621000006
Q4 2020 3 361,238 MXIM, XLNX, ALXN NEW HOLDINGS 2/14/2022 000113271622000006
Q4 2020 7 615,614 WORK, GRUB, EV, NAV NEW HOLDINGS 11/12/2021 000113271621000020
Q4 2020 3 430,445 VAR, ACIA, PLURALSI NEW HOLDINGS 8/13/2021 000113271621000016
Q4 2020 1 239,913 CXO NEW HOLDINGS 5/14/2021 000113271621000012
Q4 2020 2 3,903,000 CHFWU, ATAU NEW HOLDINGS 2/19/2021 000113271621000005
Q4 2020 568 3,244,733 TIF, TESLA IN, CLGX, FIT 13F-HR 2/17/2021 000113271621000004
Q3 2020 3 225,447 MXIM, NAV, CLGX NEW HOLDINGS 11/12/2021 000113271621000019
Q3 2020 6 401,026 VAR, GRUB, NGHC, FIT NEW HOLDINGS 8/13/2021 000113271621000015
Q3 2020 4 376,758 TIF, GLIBA, ACIA, MNTA NEW HOLDINGS 5/14/2021 000113271621000009
Q3 2020 306 2,934,230 ETFC, AMTD, WMGI, IMMU 13F-HR 11/12/2020 000113271620000017
Q2 2020 2 30,395 CBB, GLIBA NEW HOLDINGS 8/13/2021 000113271621000014
Q2 2020 5 517,352 TIF, WMGI, TCO, FIT NEW HOLDINGS 5/14/2021 000113271621000011
Q2 2020 4 910,101 ETFC, AMTD, ACIA, WUBA NEW HOLDINGS 2/12/2021 000113271621000003
Q2 2020 2 91,876 LOGM, ADSW NEW HOLDINGS 11/13/2020 000113271620000022
Q2 2020 377 2,978,543 LM, CAESARS, EE, CZR 13F-HR 8/13/2020 000113271620000012
Q1 2020 2 23,799 NAV, CBB NEW HOLDINGS 5/14/2021 000113271621000007
Q1 2020 11 1,375,235 TIF, ETFC, LM, AMTD NEW HOLDINGS 2/12/2021 000113271621000002
Q1 2020 7 463,780 WBC, AXE, ACIA, IAC NEW HOLDINGS 11/12/2020 000113271620000020
Q1 2020 3 34,946 EE, FSCT, GCAP NEW HOLDINGS 8/14/2020 000113271620000016
Q1 2020 318 2,957,286 CY, MLNX, S, UTX 13F-HR 5/15/2020 000113271620000008
Q4 2019 1 160,119 AMTD NEW HOLDINGS 2/12/2021 000113271621000001
Q4 2019 4 330,728 MLNX, TIF, ACIA, WMGI NEW HOLDINGS 11/12/2020 000113271620000019
Q4 2019 6 449,808 CY, ZAYO, INXN, CZR NEW HOLDINGS 8/14/2020 000113271620000015
Q4 2019 309 2,593,420 WCG, CAESARS, MEDICINE, TESLA IN 13F-HR 2/14/2020 000113271620000003
Q3 2019 2 141,110 MLNX, PACB NEW HOLDINGS 11/12/2020 000113271620000018
Q3 2019 5 504,035 WCG, CY, CAESARS, CZR NEW HOLDINGS 8/14/2020 000113271620000014
Q3 2019 3 824,975 CELG, GWR, ZAYO NEW HOLDINGS 5/15/2020 000113271620000011
Q3 2019 3 251,040 STI, VIAB, CPE NEW HOLDINGS 2/14/2020 000113271620000006
Q3 2019 301 1,873,439 TESLA IN, AABA, MEDICINE, DISH NET 13F-HR 11/14/2019 000113271619000018
Q2 2019 3 179,368 MLNX, AGN, CZR NEW HOLDINGS 8/14/2020 000113271620000013
Q2 2019 5 464,563 CELG, WCG, ZAYO, PACB NEW HOLDINGS 5/15/2020 000113271620000010
Q2 2019 3 289,802 STI, TSS, CRAY NEW HOLDINGS 2/14/2020 000113271620000005
Q2 2019 2 382,128 APC, TRCO NEW HOLDINGS 11/14/2019 000113271619000016
Q2 2019 237 3,846,089 RHT, FDC, LLL, WP 13F-HR 8/14/2019 000113271619000012
Q1 2019 8 1,196,860 FDC, RHT, LLL, CELG RESTATEMENT 5/15/2020 000113271620000007
Q1 2019 2 114,278 MLNX, PACB NEW HOLDINGS 5/15/2020 000113271620000009
Q1 2019 1 1,478 QUAD NEW HOLDINGS 2/14/2020 000113271620000004
Q1 2019 1 1,478 QUAD NEW HOLDINGS 11/14/2019 000113271619000019
Q4 2018 5 610,607 FOXA, RHT, TRCO, PACB NEW HOLDINGS 8/14/2019 000113271619000013
Q4 2018 7 477,224 DNB, ARRS, ATHN, AHL NEW HOLDINGS 5/13/2019 000113271619000011
Q4 2018 8 100,039 DELL, BPR, P, AXTA NEW HOLDINGS 2/19/2019 000113271619000002
Q4 2018 206 1,584,655 TESLA IN, CI, META, WTW 13F-HR 2/15/2019 000113271619000001
Q3 2018 5 513,519 FOXA, DVMT, DNB, IDTI NEW HOLDINGS 8/14/2019 000113271619000014
Q3 2018 7 687,386 COL, ESRX, ORIG, NXTM NEW HOLDINGS 5/13/2019 000113271619000010
Q3 2018 1 427,219 AET NEW HOLDINGS 2/19/2019 000113271619000006
Q3 2018 263 2,725,674 ANDV, TESLA IN, CA, PF 13F-HR 11/14/2018 000113271618000015
Q2 2018 2 148,625 TRCO, FOXA calls NEW HOLDINGS 8/14/2019 000113271619000015
Q2 2018 5 254,058 ESRX, DVMT, NXTM, USG NEW HOLDINGS 5/13/2019 000113271619000009
Q2 2018 8 1,655,305 COL, XL, AET, ANDV NEW HOLDINGS 2/19/2019 000113271619000005
Q2 2018 2 676,822 NXPI, GGP NEW HOLDINGS 11/14/2018 000113271618000016
Q2 2018 244 2,258,097 VR, TESLA IN, WTW, CI 13F-HR 8/14/2018 000113271618000012
Q1 2018 3 462,146 AET, AKRXQ, ESRX NEW HOLDINGS 5/13/2019 000113271619000008
Q1 2018 4 333,699 XL, GGP, SHLM, FOXA NEW HOLDINGS 2/19/2019 000113271619000004
Q1 2018 9 2,176,452 NXPI, MON, COL, TWX NEW HOLDINGS 11/14/2018 000113271618000017
Q1 2018 280 2,220,943 INTEL CO, APD, WTW, MICRON T 13F-HR 5/14/2018 000113271618000006
Q4 2017 3 270,904 AET, NXTM, GGP NEW HOLDINGS 2/19/2019 000113271619000003
Q4 2017 6 617,376 COL, TWX, GNCMA, DYN NEW HOLDINGS 11/14/2018 000113271618000018
Q4 2017 4 674,090 MON, SNI, TRCO, XCRA NEW HOLDINGS 8/15/2018 000113271618000014
Q4 2017 5 773,431 NXPI, CPN, AKRXQ, STRP NEW HOLDINGS 5/14/2018 000113271618000007
Q4 2017 272 3,308,677 BDX, INTEL CO, WTW, APD 13F-HR 2/14/2018 000113271618000001
Q3 2017 2 200,895 COL, NXTM NEW HOLDINGS 11/14/2018 000113271618000019
Q3 2017 6 1,379,485 TWX, NXPI, MON, SNI NEW HOLDINGS 8/15/2018 000113271618000013
Q3 2017 6 777,299 BCR, CPN, AKRXQ, TRCO NEW HOLDINGS 5/14/2018 000113271618000008
Q3 2017 1 36,420 ABCO NEW HOLDINGS 2/14/2018 000113271618000004
Q3 2017 327 4,364,217 LVLT, ALRPRB, ALR, POST 13F-HR 11/14/2017 000113271617000019
Q3 2017 2 121,663 ALR, ALRPRB NEW HOLDINGS 11/14/2017 000113271617000020
Q2 2017 9 938,180 TWX, NXPI, MON, AKRXQ NEW HOLDINGS 5/14/2018 000113271618000009
Q2 2017 9 700,547 BCR, WOOF, LVLT, WFM NEW HOLDINGS 2/14/2018 000113271618000003
Q2 2017 366 4,475,351 RAI, POST, KHC, TAP RESTATEMENT 8/31/2017 000113271617000018
Q1 2017 7 998,124 TWX, NXPI, LVLT, WOOF NEW HOLDINGS 2/14/2018 000113271618000002
Q1 2017 4 650,676 RAI, MJN, PVTB, RAD NEW HOLDINGS 11/14/2017 000113271617000021
Q1 2017 3 78,346 VAL, EVER, CST NEW HOLDINGS 8/14/2017 000113271617000014
Q1 2017 3 48,885 HKRSQ, INAP NEW HOLDINGS 5/30/2017 000113271617000012
Q1 2017 388 4,153,138 WWAV, TAP, KHC, POST 13F-HR 5/12/2017 000113271617000007
Q4 2016 3 275,833 NXPI, MON, TWX NEW HOLDINGS 2/14/2018 000113271618000005
Q4 2016 1 79,805 LVLT NEW HOLDINGS 11/14/2017 000113271617000022
Q4 2016 9 469,932 WWAV, PVTB, RAD, ALR NEW HOLDINGS 8/14/2017 000113271617000015
Q4 2016 3 82,046 BEAV, SE, EVER NEW HOLDINGS 5/12/2017 000113271617000008
Q4 2016 377 4,272,983 STJ, TAP, POST, EBAY 13F-HR 2/14/2017 000113271617000001
Q3 2016 2 75,479,000 MON, MON calls NEW HOLDINGS 11/14/2017 000113271617000023
Q3 2016 6 426,467 LNKD, MEG, ALR, JOY NEW HOLDINGS 8/14/2017 000113271617000016
Q3 2016 7 413,839 WWAV, STJ, RAD, PVTB NEW HOLDINGS 5/12/2017 000113271617000009
Q3 2016 7 193,667 IM, FLTX, CPHD, RAX NEW HOLDINGS 2/15/2017 000113271617000005
Q3 2016 390 5,615,296 PG, PG puts, EEM, COTY 13F-HR 11/14/2016 000113271616000050
Q2 2016 2 61,388 MON, MDVN NEW HOLDINGS 8/14/2017 000113271617000017
Q2 2016 6 480,442 LNKD, STJ, RAD, MEG NEW HOLDINGS 5/12/2017 000113271617000010
Q2 2016 8 191,918 IM, HUM, AXLL, CVT NEW HOLDINGS 2/14/2017 000113271617000003
Q2 2016 7 331,962 EMC, TYC, AXLL, HOT NEW HOLDINGS 11/14/2016 000113271616000051
Q2 2016 372 3,571,099 NLSN, CAG, POST, K RESTATEMENT 10/6/2016 000113271616000049
Q1 2016 6 271,845 ALR, RAD, ODP, IM NEW HOLDINGS 5/12/2017 000113271617000011
Q1 2016 3 182,823 EMC, HUM, AXLL NEW HOLDINGS 2/14/2017 000113271617000004
Q1 2016 4 167,198 BXLT, CVC, GAS, TUMI NEW HOLDINGS 11/14/2016 000113271616000052
Q1 2016 418 4,827,168 NLSN, SCHW, CAM, CAG RESTATEMENT 10/6/2016 000113271616000048
Q1 2016 2 280,095 TWC, SNDK NEW HOLDINGS 8/12/2016 000113271616000034
Q4 2015 1 17,848 HUM NEW HOLDINGS 2/15/2017 000113271617000006
Q4 2015 3 182,823 EMC, HUM, AXLL NEW HOLDINGS 2/14/2017 000113271617000002
Q4 2015 9 561,750 BRCM, TWC, RAD, ATML NEW HOLDINGS 11/14/2016 000113271616000053
Q4 2015 400 5,179,840 PCP, BRCM, CB, NLSN RESTATEMENT 10/6/2016 000113271616000047
Q4 2015 7 173,330 HNT, GMCR, ODP, JAH NEW HOLDINGS 8/12/2016 000113271616000035
Q4 2015 5 185,957 CAM, KING, YOKU, SLH NEW HOLDINGS 5/13/2016 000113271616000030
Q3 2015 3 57,114 CVC, CI, GAS NEW HOLDINGS 11/14/2016 000113271616000054
Q3 2015 482 4,855,583 HCC, NLSN, SCHW, CYN RESTATEMENT 10/6/2016 000113271616000046
Q3 2015 2 181,951 TWC, BHI NEW HOLDINGS 8/12/2016 000113271616000036
Q3 2015 8 836,945 PCP, BRCM, CB, CAM NEW HOLDINGS 5/13/2016 000113271616000031
Q3 2015 5 362,189 SIAL, PRGO, CYT, BEE NEW HOLDINGS 2/10/2016 000113271616000025
Q2 2015 737 5,757,739 FDO, HCC, DTV, NLSN RESTATEMENT 10/6/2016 000113271616000045
Q2 2015 4 417,933 BRCM, TWC, ALTR, ODP NEW HOLDINGS 8/12/2016 000113271616000037
Q2 2015 2 102,393 HCBK, PRGO NEW HOLDINGS 5/13/2016 000113271616000032
Q2 2015 4 443,838 HSP, SIAL, FSL, HME NEW HOLDINGS 2/10/2016 000113271616000026
Q2 2015 3 324,533 PLL, PPO, OCR NEW HOLDINGS 11/13/2015 000113271615000020
Q1 2015 717 4,673,276 SLXP, NLSN, SCHW, MICRON T RESTATEMENT 10/6/2016 000113271616000044
Q1 2015 3 140,067 PPO, HCBK, ODP NEW HOLDINGS 5/13/2016 000113271616000033
Q1 2015 2 207,907 HSP, CTRX NEW HOLDINGS 2/10/2016 000113271616000027
Q1 2015 5 365,302 DTV, SIAL, DRC, XLS NEW HOLDINGS 11/13/2015 000113271615000021
Q1 2015 4 449,559 FDO, TRW, PCYC, ARUN NEW HOLDINGS 8/13/2015 000113271615000016
Q4 2014 4 192,515 TWC, DRC, HCBK, TWC calls NEW HOLDINGS 2/10/2016 000113271616000028
Q4 2014 6 294,063 DTV, SIAL, LO, IRF NEW HOLDINGS 11/13/2015 000113271615000022
Q4 2014 5 373,462 TRW, AGN, FDO, RVBD NEW HOLDINGS 8/13/2015 000113271615000015
Q4 2014 4 243,726 CFN, CVD, VOLCANO, VOLC NEW HOLDINGS 5/14/2015 000113271615000009
Q4 2014 610 4,647,686 NLSN, COV, PL, MICRON T RESTATEMENT 4/6/2015 000113271615000007
Q3 2014 10 472,222 TRW, DTV, TWC, FDO NEW HOLDINGS 11/13/2015 000113271615000023
Q3 2014 6 115,082 CPWR, TIBX, IRF, SWY NEW HOLDINGS 8/13/2015 000113271615000017
Q3 2014 5 300,692 COV, PL, BYI, FWLT NEW HOLDINGS 5/14/2015 000113271615000010
Q3 2014 4 168,720 CNQR, CONCUR T, TWTC, KMR NEW HOLDINGS 2/13/2015 000113271615000002
Q3 2014 427 4,734,102 HUM, NLSN, MICRON T, ASH 13F-HR 11/14/2014 000113271614000014
Q2 2014 3 122,511 TWC, HCBK, AGN NEW HOLDINGS 8/13/2015 000113271615000018
Q2 2014 4 266,861 COV, DTV, PL, SWY NEW HOLDINGS 5/14/2015 000113271615000011
Q2 2014 1 21,159 FWLT NEW HOLDINGS 2/13/2015 000113271615000003
Q2 2014 2 52,797 HSH, MCRS NEW HOLDINGS 11/14/2014 000113271614000015
Q2 2014 1 10,567,000 HUDSON C NEW HOLDINGS 8/15/2014 000113271614000013
Q2 2014 421 4,606,601 HUM, MICRON T, MSFT, NLSN 13F-HR 8/15/2014 000113271614000012
Q1 2014 1 52,584 TWC NEW HOLDINGS 5/14/2015 000113271615000012
Q1 2014 1 20,134 FWLT NEW HOLDINGS 2/13/2015 000113271615000004
Q1 2014 2 111,522 FRX, HCBK NEW HOLDINGS 11/14/2014 000113271614000016
Q1 2014 427 5,094,622 HUM, MSFT, NLSN, AAL 13F-HR 5/14/2014 000113271614000006
Q4 2013 1 20,233 HCBK NEW HOLDINGS 2/13/2015 000113271615000005
Q4 2013 2 7,150 LEAP, RDA NEW HOLDINGS 11/14/2014 000113271614000017
Q4 2013 1 2,599 CSE NEW HOLDINGS 8/15/2014 000113271614000010
Q4 2013 1 4,350 LEAP NEW HOLDINGS 5/14/2014 000113271614000007
Q4 2013 394 5,407,737 TERADYNE, HUM, MYLAN IN, LIFE 13F-HR 2/13/2014 000113271614000001
Q3 2013 1 18,061,000 HCBK NEW HOLDINGS 11/14/2014 000113271614000018
Q3 2013 4 14,770,000 HMA, LEAP, CSE, CTB NEW HOLDINGS 8/15/2014 000113271614000011
Q3 2013 4 111,123,000 LIFE, LPS, SPREADTR, RDA NEW HOLDINGS 5/14/2014 000113271614000008
Q3 2013 1 44,403,000 ELAN PLC NEW HOLDINGS 2/13/2014 000113271614000002
Q2 2013 4 161,919,000 LIFE TEC, SMITHFIE, WARNER C, DOLE FOO NEW HOLDINGS 5/14/2014 000113271614000009
Q2 2013 3 95,744,000 BMC SOFT, DELL INC, BUCKEYE NEW HOLDINGS 2/13/2014 000113271614000003
Q1 2013 2 46,788,000 GARDNER, WMS INDS NEW HOLDINGS 2/13/2014 000113271614000004
Q4 2012 2 59,375,000 SPRINT N, NYSE EUR NEW HOLDINGS 2/13/2014 000113271614000005
Additional filings from OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) that have since been restated

13D and 13G Filings

All 13D and 13G filings

Investors who own more than 5% of a class must file a Schedule 13D or 13G.

2 securities where the latest filing since 12/18/2024 is a 13G, the newest filed 4/29/2026. View all