Jim Simons’s OmniAb OABI Stock Holding History

Jim Simons’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 Q1	$423K	Buy	269,600 +26,900	+11%	+$48.5K	﹤0.01%	2667
2025 Q4	$449K	Sell	242,700 -280,754	-54%	-$488K	﹤0.01%	2619
2025 Q3	$838K	Sell	523,454 -184,096	-26%	-$336K	﹤0.01%	2575
2025 Q2	$1.23M	Buy	707,550 +680,950	+2,560%	+$1.14M	﹤0.01%	2397
2025 Q1	$63.8K	Buy	+26,600	New	+$87K	﹤0.01%	3259
2024 Q1	–	Sell	-40,959	Closed	-$253K	–	3957
2023 Q4	$253K	Sell	40,959 -39,000	-49%	-$192K	﹤0.01%	3051
2023 Q3	$415K	Sell	79,959 -59,900	-43%	-$320K	﹤0.01%	2797
2023 Q2	$703K	Buy	+139,859	New	+$567K	﹤0.01%	2693

Other funds holding OABI

WCM

Whitefort Capital Management New York $339M AUM 52.48% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

CCM

Cadian Capital Management New York $821M AUM 14.36% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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 Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

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

Jim Simons's OABI Position: Q1 2026 in Review

Jim Simons increased its OmniAb (OABI) stake by 11% in Q1 2026, buying an estimated $48.5K and bringing the position to 269,600 shares worth $423K. The position accounts for ﹤0.01% of the portfolio, ranked #2667.

Jim Simons first reported a position in OABI in Q2 2023 and has held it in 8 quarters since. The position peaked at $1.23M in Q2 2025. 128 funds tracked by Wall St. Rank hold OABI as of Q1 2026.

Jim Simons held 269,600 shares of OmniAb worth $423K as of Q1 2026.
Jim Simons bought 26,900 OmniAb shares in Q1 2026, an estimated $48.5K.
OmniAb made up ﹤0.01% of Jim Simons's portfolio in Q1 2026, its #2667 holding.
Jim Simons first reported a position in OmniAb in Q2 2023 and has held it in 8 quarters since.
Jim Simons's OmniAb position peaked at $1.23M in Q2 2025.
128 funds tracked by Wall St. Rank held OmniAb as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.