OmniAb, Inc. - OABIW

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q2 2026 · Compare: Q1 2026
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
Whitefort Capital Management, LP History Reduced 10,248,658 25,211 6.21% 6.59% 1 -3,975,000 -27.95% Q2 2026 Aug 14, 2026
BlackRock, Inc. History Added to 8,897,490 21,887 0.0% 0.0% 2 +790,609 9.75% Q2 2026 Aug 07, 2026
NOMURA HOLDINGS INC History Added to 5,028,160 12,369 0.01% 0.0% 3 +4,323,112 613.17% Q2 2026 Aug 14, 2026
CADIAN CAPITAL MANAGEMENT, LP History Added to 4,211,821 10,361 0.78% 0.79% 4 +54,692 1.32% Q2 2026 Aug 14, 2026
VANGUARD CAPITAL MANAGEMENT LLC History Reduced 3,852,356 9,476 0.0% 0.0% 5 -141,296 -3.54% Q2 2026 Aug 13, 2026
GEODE CAPITAL MANAGEMENT, LLC History Reduced 2,883,978 7,096 0.0% 0.0% 6 -41,601 -1.42% Q2 2026 Aug 12, 2026
RICE HALL JAMES & ASSOCIATES, LLC History Added to 2,610,434 6,421 0.31% 0.22% 7 +63,179 2.48% Q2 2026 Aug 07, 2026
PRIVATE MANAGEMENT GROUP INC History Reduced 2,344,770 5,768 0.15% 0.11% 8 -84,396 -3.47% Q2 2026 Jul 31, 2026
STATE STREET CORP History Added to 2,133,549 5,248 0.0% 0.0% 9 +66,406 3.21% Q2 2026 Aug 07, 2026
DIMENSIONAL FUND ADVISORS LP History Reduced 1,262,099 3,105 0.0% 0.0% 10 -483,149 -27.68% Q2 2026 Aug 11, 2026
TOWERVIEW LLC History Added to 1,180,000 2,902 1.9% 1.01% 11 +180,000 18.0% Q2 2026 Aug 04, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC History Added to 980,416 2,411 0.0% 0.0% 12 +76,617 8.48% Q2 2026 Aug 13, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History Added to 966,877 2,378 0.0% 0.0% 13 +7,304 0.76% Q2 2026 Aug 14, 2026
NORTHERN TRUST CORP History Added to 948,294 2,332 0.0% 0.0% 14 +67,399 7.65% Q2 2026 Aug 13, 2026
ADAR1 Capital Management, LLC History Added to 947,412 2,330 0.11% 0.07% 15 +242,222 34.35% Q2 2026 Aug 14, 2026
ISTHMUS PARTNERS, LLC History Added to 803,428 1,976 0.19% 0.12% 16 +46,754 6.18% Q2 2026 Jul 20, 2026
VANGUARD FIDUCIARY TRUST CO History Added to 758,460 1,865 0.0% 0.0% 17 +32,852 4.53% Q2 2026 Aug 13, 2026
TWO SIGMA INVESTMENTS, LP History Added to 657,432 1,617 0.0% 0.0% 18 +144,691 28.22% Q2 2026 Aug 14, 2026
Nuveen, LLC History Added to 642,811 1,581 0.0% 0.0% 19 +18,935 3.04% Q2 2026 Aug 11, 2026
RENAISSANCE TECHNOLOGIES LLC History Added to 600,350 1,476 0.0% 0.0% 20 +330,750 122.68% Q2 2026 Aug 13, 2026
D. E. Shaw & Co., Inc. History Added to 559,404 1,376 0.0% 0.0% 21 +179,150 47.11% Q2 2026 Aug 14, 2026
MACKENZIE FINANCIAL CORP History New 489,134 1,203 0.0% 22 +489,134 New Q2 2026 Aug 13, 2026
GOLDMAN SACHS GROUP INC History Reduced 384,573 946 0.0% 0.0% 23 -34,451 -8.22% Q2 2026 Aug 14, 2026
MORGAN STANLEY History Reduced 371,506 913 0.0% 0.0% 24 -36,427 -8.93% Q2 2026 Aug 13, 2026
MILLENNIUM MANAGEMENT LLC History Reduced 474,159 864 0.0% 0.0% 25 -49,759 -9.5% Q2 2026 Aug 14, 2026
Bank of New York Mellon Corp History Added to 318,406 783 0.0% 0.0% 26 +43,955 16.02% Q2 2026 Aug 06, 2026
TLS Advisors LLC History Reduced 220,685 542 1.59% 0.93% 27 -29,500 -11.79% Q2 2026 Aug 14, 2026
FMR LLC History Added to 199,818 491 0.0% 0.0% 28 +10,282 5.42% Q2 2026 Aug 13, 2026
BRIDGEWAY CAPITAL MANAGEMENT, LLC History No change 198,900 489 0.01% 0.01% 29 0 0.0% Q2 2026 Aug 14, 2026
Arbiter Partners Capital Management LLC History No change 192,585 473 0.25% 0.17% 30 0 0.0% Q2 2026 Aug 10, 2026
RHUMBLINE ADVISERS History Added to 171,957 423 0.0% 0.0% 31 +12,722 7.99% Q2 2026 Aug 11, 2026
Palumbo Wealth Management LLC History New 161,975 398 0.08% 32 +161,975 New Q2 2026 Aug 12, 2026
Invesco Ltd. History Added to 161,376 396 0.0% 0.0% 33 +26,289 19.46% Q2 2026 Aug 14, 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP History New 159,621 392 0.0% 34 +159,621 New Q2 2026 Aug 13, 2026
AQR CAPITAL MANAGEMENT LLC History Added to 157,716 387 0.0% 0.0% 35 +42,069 36.38% Q2 2026 Aug 14, 2026
BANK OF AMERICA CORP /DE/ History Added to 149,493 367 0.0% 0.0% 36 +27,837 22.88% Q2 2026 Aug 14, 2026
Walleye Capital LLC History New 144,427 355 0.0% 37 +144,427 New Q2 2026 Aug 03, 2026
Cornerstone Capital, Inc. History No change 142,286 350 0.03% 0.02% 38 0 0.0% Q2 2026 Aug 03, 2026
ACADIAN ASSET MANAGEMENT LLC History New 132,385 323 0.0% 39 +132,385 New Q2 2026 Aug 13, 2026
JPMORGAN CHASE & CO History Reduced 107,049 275 0.0% 0.0% 40 -13,053 -10.87% Q2 2026 Aug 12, 2026
DEUTSCHE BANK AG\ History Added to 100,842 248 0.0% 0.0% 41 +8,172 8.82% Q2 2026 Aug 07, 2026
WELLS FARGO & COMPANY/MN History Added to 100,229 246 0.0% 0.0% 42 +50,096 99.93% Q2 2026 Aug 14, 2026
ALLIANCEBERNSTEIN L.P. History Added to 155,992 244 0.0% 0.0% 43 +5,400 3.59% Q2 2026 Aug 14, 2026
CITADEL ADVISORS LLC History Reduced 91,890 226 0.0% 0.0% 44 -149,394 -61.92% Q2 2026 Sep 02, 2026
PRICE T ROWE ASSOCIATES INC /MD/ History Added to 80,106 198 0.0% 0.0% 45 +3,066 3.98% Q2 2026 Aug 14, 2026
AMERICAN CENTURY COMPANIES INC History Added to 75,083 184 0.0% 0.0% 46 +40,267 115.66% Q2 2026 Aug 12, 2026
XTX Topco Ltd History Added to 73,907 181 0.0% 0.0% 47 +29,248 65.49% Q2 2026 Aug 14, 2026
Connor, Clark & Lunn Investment Management Ltd. History Added to 72,357 177 0.0% 0.0% 48 +58,221 411.86% Q2 2026 Aug 12, 2026
MetLife Investment Management, LLC History Added to 65,744 161 0.0% 0.0% 49 +17,612 36.59% Q2 2026 Aug 13, 2026
Russell Investments Group, Ltd. History Added to 63,783 156 0.0% 0.0% 50 +52,983 490.58% Q2 2026 Aug 06, 2026
THRIVENT FINANCIAL FOR LUTHERANS History New 55,342 136 0.0% 51 +55,342 New Q2 2026 Aug 14, 2026
CITIGROUP INC History Added to 54,667 134 0.0% 0.0% 52 +44,915 460.57% Q2 2026 Aug 03, 2026
SEI INVESTMENTS CO History Reduced 53,390 131 0.0% 0.0% 53 -7,188 -11.87% Q2 2026 Aug 14, 2026
Shay Capital LLC History Added to 51,500 126 0.01% 0.01% 54 +1,838 3.7% Q2 2026 Aug 14, 2026
Vanguard Global Advisers, LLC History No change 51,396 126 0.0% 0.0% 55 0 0.0% Q2 2026 Aug 13, 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. History Added to 50,644 124 0.0% 0.0% 56 +531 1.06% Q2 2026 Aug 14, 2026
BLAIR WILLIAM & CO/IL History Added to 43,394 106 0.0% 0.0% 57 +178 0.41% Q2 2026 Aug 11, 2026
Police & Firemen's Retirement System of New Jersey History Added to 42,217 103 0.0% 0.0% 58 +19,649 87.07% Q2 2026 Jul 23, 2026
PRUDENTIAL FINANCIAL INC History Added to 38,969 95 0.0% 0.0% 59 +19,690 102.13% Q2 2026 Aug 12, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Reduced 35,691 87 0.0% 0.0% 60 -5,938 -14.26% Q2 2026 Aug 14, 2026
Squarepoint Ops LLC History Added to 35,357 86 0.0% 0.0% 61 +25,325 252.44% Q2 2026 Aug 14, 2026
LPL Financial LLC History Reduced 34,821 85 0.0% 0.0% 62 -1,343 -3.71% Q2 2026 Aug 07, 2026
WOODSTOCK CORP History Reduced 29,376 72 0.01% 0.0% 63 -5,042 -14.65% Q2 2026 Jul 13, 2026
INTECH INVESTMENT MANAGEMENT LLC History Reduced 27,824 68 0.0% 0.0% 64 -1,113 -3.85% Q2 2026 Aug 10, 2026
BARCLAYS PLC History Reduced 26,469 65 0.0% 0.0% 65 -2,291 -7.97% Q2 2026 Aug 14, 2026
MANUFACTURERS LIFE INSURANCE COMPANY, THE History Reduced 24,785 60 0.0% 0.0% 66 -4,158 -14.37% Q2 2026 Sep 09, 2026
VOYA INVESTMENT MANAGEMENT LLC History Added to 23,613 58 0.0% 0.0% 67 +5,423 29.81% Q2 2026 Aug 12, 2026
China Universal Asset Management Co., Ltd. History Reduced 23,072 56 0.0% 0.0% 68 -2,474 -9.68% Q2 2026 Jul 24, 2026
HighTower Advisors, LLC History Added to 21,609 53 0.0% 0.0% 69 +541 2.57% Q2 2026 Aug 05, 2026
BFSG, LLC History No change 20,815 51 0.0% 0.0% 70 0 0.0% Q2 2026 Jul 20, 2026
Qube Research & Technologies Ltd History New 20,186 49 0.0% 71 +20,186 New Q2 2026 Aug 14, 2026
BNP PARIBAS FINANCIAL MARKETS History Reduced 19,822 48 0.0% 0.0% 72 -7,517 -27.5% Q2 2026 Aug 13, 2026
Quadrature Capital Ltd History New 19,492 47 0.0% 74 +19,492 New Q2 2026 Aug 06, 2026
ProShare Advisors LLC History Reduced 19,155 47 0.0% 0.0% 73 -3,397 -15.06% Q2 2026 Aug 11, 2026
Thrive Wealth Management, LLC History Added to 18,046 44 0.01% 0.0% 75 +765 4.43% Q2 2026 Jul 07, 2026
UBS Group AG History Reduced 17,849 43 0.0% 0.0% 76 -84,658 -82.59% Q2 2026 Aug 13, 2026
TWO SIGMA SECURITIES, LLC History New 15,726 38 0.0% 78 +15,726 New Q2 2026 Aug 14, 2026
OSAIC HOLDINGS, INC. History Added to 15,459 38 0.0% 0.0% 77 +9,960 181.12% Q2 2026 Aug 14, 2026
CANADA PENSION PLAN INVESTMENT BOARD History New 15,100 37 0.0% 79 +15,100 New Q2 2026 Aug 14, 2026
VICTORY CAPITAL MANAGEMENT INC History Added to 13,649 33 0.0% 0.0% 80 +161 1.19% Q2 2026 Aug 07, 2026
JANE STREET GROUP, LLC History Reduced 13,200 32 0.0% 0.0% 81 -14,351 -52.09% Q2 2026 Aug 14, 2026
MERCER GLOBAL ADVISORS INC /ADV History Added to 12,357 30 0.0% 0.0% 82 +2,309 22.98% Q2 2026 Aug 19, 2026
CHOREO, LLC History Added to 12,232 30 0.0% 0.0% 83 +54 0.44% Q2 2026 Aug 04, 2026
NEW YORK STATE COMMON RETIREMENT FUND History No change 11,806 29 0.0% 0.0% 84 0 0.0% Q2 2026 Jul 29, 2026
Legal & General Group Plc History Added to 11,284 27 0.0% 0.0% 85 +1,992 21.44% Q2 2026 Aug 14, 2026
Legato Capital Management LLC History Reduced 10,913 26 0.0% 0.0% 86 -17,283 -61.3% Q2 2026 Aug 06, 2026
Vanguard Personalized Indexing Management, LLC History Reduced 10,793 26 0.0% 0.0% 87 -14,434 -57.22% Q2 2026 Aug 11, 2026
Virtu Financial LLC History New 10,565 26 0.0% 88 +10,565 New Q2 2026 Aug 13, 2026
XPONANCE LLC History New 10,472 25 0.0% 89 +10,472 New Q2 2026 Aug 10, 2026
Ameritas Investment Partners, Inc. History No change 9,652 23 0.0% 0.0% 90 0 0.0% Q2 2026 Aug 13, 2026
Tower Research Capital LLC (TRC) History Reduced 8,044 19 0.0% 0.0% 91 -27,262 -77.22% Q2 2026 Aug 11, 2026
SUMMIT SECURITIES GROUP LLC History New 7,882 19 0.0% 92 +7,882 New Q2 2026 Aug 03, 2026
Steigerwald, Gordon & Koch Inc. History No change 7,673 18 0.0% 0.0% 93 0 0.0% Q2 2026 Jul 22, 2026
Mirae Asset Global Investments Co., Ltd. History Reduced 6,484 15 0.0% 0.0% 94 -1,345 -17.18% Q2 2026 Jul 22, 2026
ROYAL BANK OF CANADA History Added to 5,219 13 0.0% 0.0% 95 +3,468 198.06% Q2 2026 Aug 14, 2026
CWM, LLC History No change 7,599 11 0.0% 0.0% 96 0 0.0% Q1 2026 May 14, 2026
GF FUND MANAGEMENT CO. LTD. History Reduced 2,973 7 0.0% 0.0% 97 -228 -7.12% Q2 2026 Aug 07, 2026
Allworth Financial LP History Added to 2,771 6 0.0% 0.0% 98 +320 13.06% Q2 2026 Aug 11, 2026
Jackson, Grant Investment Advisers, Inc. History No change 2,450 6 0.0% 0.0% 99 0 0.0% Q2 2026 Jul 31, 2026
SBI Securities Co., Ltd. History Added to 2,059 5 0.0% 101 +2,035 8479.17% Q2 2026 Jul 22, 2026
Sterling Capital Management LLC History Reduced 2,217 5 0.0% 0.0% 100 -1,090 -32.96% Q2 2026 Jul 28, 2026
Redwood Park Advisors LLC History No change 2,184 5 0.0% 0.0% 102 0 0.0% Q2 2026 Aug 11, 2026
Parallel Advisors, LLC History No change 1,854 4 0.0% 0.0% 103 0 0.0% Q2 2026 Aug 05, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM History Reduced 1,515 3 0.0% 0.0% 104 -4,728 -75.73% Q2 2026 Aug 24, 2026
Arax Advisory Partners History Added to 1,601 3 0.0% 105 +1,593 19912.5% Q2 2026 Aug 10, 2026
Larson Financial Group LLC History No change 1,444 3 0.0% 0.0% 106 0 0.0% Q2 2026 Aug 14, 2026
Optiver Holding B.V. History Reduced 848 2 0.0% 0.0% 108 -96 -10.17% Q2 2026 Aug 12, 2026
Cheviot Value Management, LLC History No change 980 2 0.0% 0.0% 107 0 0.0% Q2 2026 Aug 06, 2026
NISA INVESTMENT ADVISORS, LLC History Added to 520 1 0.0% 109 +30 6.12% Q2 2026 Aug 10, 2026
EverSource Wealth Advisors, LLC History Added to 521 1 0.0% 111 +11 2.16% Q2 2026 Jul 24, 2026
North Star Investment Management Corp. History No change 550 1 0.0% 110 0 0.0% Q2 2026 Jul 28, 2026
Dynamic Wealth Strategies, LLC History No change 411 1 0.0% 112 0 0.0% Q2 2026 Jul 23, 2026
Stonepine Capital Management, LLC History Closed out 0 0 0.1% -164,045 -100.0% Q2 2026 Aug 17, 2026
JACOBS LEVY EQUITY MANAGEMENT, INC History Closed out 0 0 0.0% -42,966 -100.0% Q2 2026 Aug 14, 2026
NINE MASTS CAPITAL Ltd History Closed out 0 0 0.01% -29,062 -100.0% Q2 2026 Aug 07, 2026
State of Wyoming History Reduced 274 0 0.0% -24,694 -98.9% Q2 2026 Aug 06, 2026
Point72 Asset Management, L.P. History Closed out 0 0 0.0% -16,238 -100.0% Q2 2026 Aug 14, 2026
Diversified Enterprises, LLC History Closed out 0 0 0.0% -11,311 -100.0% Q2 2026 Jul 31, 2026
Abel Hall, LLC History Closed out 0 0 0.0% -10,704 -100.0% Q2 2026 Jul 24, 2026
Integrated Wealth Concepts LLC History Closed out 0 0 0.0% -10,651 -100.0% Q2 2026 Sep 08, 2026
MAI Capital Management History Closed out 0 0 0.0% -4,821 -100.0% Q2 2026 Aug 14, 2026
Essential Partners LLC History Closed out 0 0 0.0% -1,060 -100.0% Q2 2026 Aug 10, 2026
Parkside Financial Bank & Trust History New 347 0 +347 New Q2 2026 Sep 04, 2026
GAMMA Investing LLC History Reduced 602 0 0.0% -330 -35.41% Q2 2026 Jul 07, 2026
Quarry LP History New 317 0 +317 New Q2 2026 Aug 14, 2026
SIMPLEX TRADING, LLC History Closed out 0 0 -283 -100.0% Q2 2026 Aug 12, 2026
C M BIDWELL & ASSOCIATES LTD History New 233 0 +233 New Q2 2026 Aug 11, 2026
IFG Advisory, LLC History New 190 0 +190 New Q2 2026 Aug 13, 2026
TD PRIVATE CLIENT WEALTH LLC History New 170 0 +170 New Q2 2026 Aug 04, 2026
Farther Finance Advisors, LLC History Added to 191 0 +160 516.13% Q2 2026 Jul 17, 2026
ROTHSCHILD INVESTMENT LLC History Added to 154 0 +66 75.0% Q2 2026 Aug 06, 2026
TWIN PEAKS WEALTH ADVISORS, LLC History Closed out 0 0 -58 -100.0% Q2 2026 Aug 13, 2026
FARMERS & MERCHANTS INVESTMENTS INC History Closed out 0 0 -53 -100.0% Q2 2026 Jul 20, 2026
True Wealth Design, LLC History Added to 54 0 +38 237.5% Q2 2026 Jul 16, 2026
Wealth Enhancement Trust Services, Inc. History New 35 0 +35 New Q2 2026 Jul 22, 2026
Clearstead Advisors, LLC History New 29 0 +29 New Q2 2026 Aug 06, 2026
Transamerica Financial Advisors, LLC History Closed out 0 0 -29 -100.0% Q2 2026 Aug 14, 2026
SJS Investment Consulting Inc. History Added to 28 0 +25 833.33% Q2 2026 Jul 22, 2026
Wealth Preservation Advisors, LLC History Closed out 0 0 -19 -100.0% Q2 2026 Aug 14, 2026
Root Financial Partners, LLC History Closed out 0 0 -13 -100.0% Q2 2026 Jul 29, 2026
IFP Advisors, Inc History Reduced 87 0 -8 -8.42% Q2 2026 Jul 20, 2026
JPL Wealth Management, LLC History New 7 0 +7 New Q2 2026 Aug 13, 2026
Caitong International Asset Management Co., Ltd History Added to 5 0 +4 400.0% Q2 2026 Aug 04, 2026
FIFTH THIRD BANCORP History No change 127 0 0 0.0% Q2 2026 Aug 05, 2026
CENTRAL TRUST Co History No change 171 0 0 0.0% Q2 2026 Jul 31, 2026
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC History No change 127 0 0 0.0% Q2 2026 Aug 13, 2026
SIGNATUREFD, LLC History No change 361 0 0 0.0% Q2 2026 Jul 23, 2026
MATHER GROUP, LLC. History No change 21 0 0 0.0% Q2 2026 Jul 27, 2026
Comprehensive Financial Planning, Inc./PA History No change 323 0 0 0.0% Q2 2026 Aug 10, 2026