Russell Investments Group’s OmniAb OABI Stock Holding History

Russell Investments Group’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	$157K	Buy	63,783 +52,983	+491%	+$105K	﹤0.01%	3273
2026 Q1	$17K	Sell	10,800 -139	-1%	-$251	﹤0.01%	3665
2025 Q4	$20.2K	Buy	10,939 +1,353	+14%	+$2.35K	﹤0.01%	3624
2025 Q3	$15.3K	Buy	9,586 +8,827	+1,163%	+$16.1K	﹤0.01%	3672
2025 Q2	$1.32K	Sell	759 -1,165	-61%	-$1.95K	﹤0.01%	3635
2025 Q1	$4.62K	Sell	1,924 -18	-0.9%	-$59	﹤0.01%	3383
2024 Q4	$6.88K	Sell	1,942 -1,974	-50%	-$7.81K	﹤0.01%	3218
2024 Q3	$16.6K	Buy	3,916 +3,752	+2,288%	+$16.2K	﹤0.01%	2994
2024 Q2	$615	Buy	+164	New	+$747	﹤0.01%	3487
2023 Q1	–	Sell	-44,139	Closed	-$159K	–	3351
2022 Q4	$159K	Buy	+44,139	New	+$232K	﹤0.01%	2609

Other funds holding OABI

BlackRock New York $6.73T AUM 46.02% 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 Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

TowerView LLC New York $152M AUM 20.28% 1-Year Est. Return

Isthmus Partners Madison, Wisconsin $1.03B AUM 22.86% 1-Year Est. Return

Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return

APCM

Arbiter Partners Capital Management New York $190M AUM 51.6% 1-Year Est. Return

Walleye Capital New York $28B AUM 44.22% 1-Year Est. Return

Cornerstone Capital Palo Alto, California $1.12B AUM 28.84% 1-Year Est. Return

Russell Investments Group's OABI Position: Q2 2026 in Review

Russell Investments Group increased its OmniAb (OABI) stake by 491% in Q2 2026, buying an estimated $105K and bringing the position to 63,783 shares worth $157K. The position accounts for ﹤0.01% of the portfolio, ranked #3273.

Russell Investments Group first reported a position in OABI in Q4 2022 and has held it in 10 quarters since. The position peaked at $159K in Q4 2022. 56 funds tracked by Wall St. Rank hold OABI as of Q2 2026.

Russell Investments Group held 63,783 shares of OmniAb worth $157K as of Q2 2026.
Russell Investments Group bought 52,983 OmniAb shares in Q2 2026, an estimated $105K.
OmniAb made up ﹤0.01% of Russell Investments Group's portfolio in Q2 2026, its #3273 holding.
Russell Investments Group first reported a position in OmniAb in Q4 2022 and has held it in 10 quarters since.
Russell Investments Group's OmniAb position peaked at $159K in Q4 2022.
56 funds tracked by Wall St. Rank held OmniAb as of Q2 2026.

Based on Russell Investments Group's 13F filing for Q2 2026, filed 6 Aug 2026.