Jane Street’s OmniAb OABI Stock Holding History

Jane Street’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	–	Sell	-27,551	Closed	-$54.7K	–	12661
2026 Q1	$43.3K	Sell	27,551 -107,827	-80%	-$195K	﹤0.01%	11020
2025 Q4	$250K	Sell	135,378 -53,704	-28%	-$93.3K	﹤0.01%	9233
2025 Q3	$303K	Buy	189,082 +35,346	+23%	+$64.6K	﹤0.01%	8881
2025 Q2	$268K	Buy	153,736 +72,958	+90%	+$122K	﹤0.01%	8060
2025 Q1	$194K	Buy	80,778 +16,823	+26%	+$55K	﹤0.01%	8476
2024 Q4	$226K	Sell	63,955 -72,404	-53%	-$286K	﹤0.01%	8202
2024 Q3	$577K	Sell	136,359 -36,694	-21%	-$159K	﹤0.01%	6941
2024 Q2	$649K	Buy	173,053 +151,675	+709%	+$691K	﹤0.01%	6593
2024 Q1	$116K	Buy	21,378 +4,084	+24%	+$23.5K	﹤0.01%	8474
2023 Q4	$107K	Buy	+17,294	New	+$85K	﹤0.01%	8551
2023 Q2	–	Sell	-80,164	Closed	-$295K	–	9296
2023 Q1	$295K	Sell	80,164 -181,946	-69%	-$687K	﹤0.01%	7230
2022 Q4	$944K	Buy	+262,110	New	+$1.38M	﹤0.01%	5073

Other funds holding OABI

WCM

Whitefort Capital Management New York $406M AUM 84.26% 1-Year Est. Return

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

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 Malvern, Pennsylvania $4.68T 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

Jane Street's OABI Position: Q2 2026 in Review

Jane Street sold out of OmniAb (OABI) in Q2 2026, closing a stake of 27,551 shares — an estimated $54.7K sold.

Jane Street first reported a position in OABI in Q4 2022 and held it in 12 quarters. The position peaked at $944K in Q4 2022. 131 funds tracked by Wall St. Rank hold OABI as of Q2 2026.

Jane Street reported no remaining OmniAb position as of Q2 2026 after selling out during the quarter.
Jane Street sold 27,551 OmniAb shares in Q2 2026, an estimated $54.7K.
Jane Street first reported a position in OmniAb in Q4 2022 and held it in 12 quarters.
Jane Street's OmniAb position peaked at $944K in Q4 2022.
131 funds tracked by Wall St. Rank held OmniAb as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.