Simplex Trading’s OmniAb OABI Stock Holding History

Simplex Trading’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	$444	Sell	283 -147	-34%	-$265	﹤0.01%	8745
2025 Q4	$795	Sell	430 -2,904	-87%	-$5.05K	﹤0.01%	8078
2025 Q3	$5K	Buy	3,334 +3,134	+1,567%	+$5.73K	﹤0.01%	8331
2025 Q2	$0	Sell	200 -31	-13%	-$52	﹤0.01%	9417
2025 Q1	$0	Sell	231 -1,100	-83%	-$3.6K	﹤0.01%	9298
2024 Q4	$4K	Sell	1,331 -986	-43%	-$3.9K	﹤0.01%	7767
2024 Q3	$9K	Buy	2,317 +374	+19%	+$1.62K	﹤0.01%	7265
2024 Q2	$7K	Buy	+1,943	New	+$8.85K	﹤0.01%	7687
2023 Q3	–	Sell	-7	Closed	-$37	–	9481
2023 Q2	$0	Buy	+7	New	+$28	﹤0.01%	9633
2023 Q1	–	Sell	-1,992	Closed	-$7.52K	–	9801
2022 Q4	$7K	Buy	+1,992	New	+$10.5K	﹤0.01%	7847

Other funds holding OABI

WCM

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

BlackRock New York $5.72T AUM 30.48% 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 $1.61T AUM 30.72% 1-Year Est. Return

RHJA

Rice Hall James & Associates San Diego, California $1.8B AUM 36.16% 1-Year Est. Return

PMG

Private Management Group Irvine, California $3.47B AUM 13.39% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

TowerView LLC New York $155M AUM 30.14% 1-Year Est. Return

Simplex Trading's OABI Position: Q1 2026 in Review

Simplex Trading reduced its OmniAb (OABI) stake by 34% in Q1 2026, selling an estimated $265 and leaving 283 shares worth $444. The position accounts for ﹤0.01% of the portfolio, ranked #8745.

Simplex Trading first reported a position in OABI in Q4 2022 and has held it in 10 quarters since. The position peaked at $9K in Q3 2024. 128 funds tracked by Wall St. Rank hold OABI as of Q1 2026.

Simplex Trading held 283 shares of OmniAb worth $444 as of Q1 2026.
Simplex Trading sold 147 OmniAb shares in Q1 2026, an estimated $265.
OmniAb made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #8745 holding.
Simplex Trading first reported a position in OmniAb in Q4 2022 and has held it in 10 quarters since.
Simplex Trading's OmniAb position peaked at $9K in Q3 2024.
128 funds tracked by Wall St. Rank held OmniAb as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.