BlackRock
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BlackRock’s OmniAb OABI Stock Holding History

BlackRock’s Portfolio OABI Stock Details OABI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$21.9M Buy
8,897,490
+790,609
+10% +$1.57M ﹤0.01% 3191
2026
Q1 		$12.7M Buy
8,106,881
+41,900
+0.5% +$75.6K ﹤0.01% 3344
2025
Q4 		$14.9M Buy
8,064,981
+1,100,759
+16% +$1.91M ﹤0.01% 3253
2025
Q3 		$11.1M Sell
6,964,222
-36,957
-0.5% -$67.5K ﹤0.01% 3403
2025
Q2 		$12.2M Sell
7,001,179
-57,563
-0.8% -$96.3K ﹤0.01% 3308
2025
Q1 		$16.9M Sell
7,058,742
-120,278
-2% -$394K ﹤0.01% 3040
2024
Q4 		$25.4M Sell
7,179,020
-44,529
-0.6% -$176K ﹤0.01% 2893
2024
Q3 		$30.6M Buy
7,223,549
+186,626
+3% +$807K ﹤0.01% 2778
2024
Q2 		$26.4M Sell
7,036,923
-35,178
-0.5% -$160K ﹤0.01% 2810
2024
Q1 		$38.3M Sell
7,072,101
-215,718
-3% -$1.24M ﹤0.01% 2605
2023
Q4 		$45M Buy
7,287,819
+521,034
+8% +$2.56M ﹤0.01% 2539
2023
Q3 		$35.1M Sell
6,766,785
-35,811
-0.5% -$191K ﹤0.01% 2619
2023
Q2 		$34.2M Buy
6,802,596
+1,090,237
+19% +$4.42M ﹤0.01% 2711
2023
Q1 		$21M Sell
5,712,359
-50,020
-0.9% -$189K ﹤0.01% 2947
2022
Q4 		$20.7M Buy
+5,762,379
New +$30.2M ﹤0.01% 3025

Other funds holding OABI

WCM
Whitefort Capital Management New York $406M AUM 84.26% 1-Year Est. Return
Nomura Holdings
Nomura Holdings Tokyo, Japan $85.4B AUM 91.09% 1-Year Est. Return
CCM
Cadian Capital Management New York $1.32B AUM 4.19% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
RHJA
Rice Hall James & Associates San Diego, California $2.05B AUM 43.16% 1-Year Est. Return
PMG
Private Management Group Irvine, California $3.8B AUM 23.19% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
TL
TowerView LLC New York $152M AUM 20.28% 1-Year Est. Return

BlackRock's OABI Position: Q2 2026 in Review

BlackRock increased its OmniAb (OABI) stake by 9.8% in Q2 2026, buying an estimated $1.57M and bringing the position to 8,897,490 shares worth $21.9M. The position accounts for ﹤0.01% of the portfolio, ranked #3191.

BlackRock first reported a position in OABI in Q4 2022 and has held it in 15 quarters since. The position peaked at $45M in Q4 2023. 131 funds tracked by Wall St. Rank hold OABI as of Q2 2026.

  • BlackRock held 8,897,490 shares of OmniAb worth $21.9M as of Q2 2026.
  • BlackRock bought 790,609 OmniAb shares in Q2 2026, an estimated $1.57M.
  • OmniAb made up ﹤0.01% of BlackRock's portfolio in Q2 2026, its #3191 holding.
  • BlackRock first reported a position in OmniAb in Q4 2022 and has held it in 15 quarters since.
  • BlackRock's OmniAb position peaked at $45M in Q4 2023.
  • 131 funds tracked by Wall St. Rank held OmniAb as of Q2 2026.

Based on BlackRock's 13F filing for Q2 2026, filed 7 Aug 2026.