Janus Henderson Group’s OmniAb OABI Stock Holding History

Janus Henderson 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
2025 Q2	–	Sell	-8,058,228	Closed	-$19.5M	–	2480
2025 Q1	$19.5M	Buy	8,058,228 +97,907	+1%	+$320K	0.01%	576
2024 Q4	$28.2M	Buy	7,960,321 +88,993	+1%	+$352K	0.01%	515
2024 Q3	$33.3M	Buy	7,871,328 +3,104	+0%	+$13.4K	0.02%	472
2024 Q2	$29.5M	Buy	7,868,224 +8,786	+0.1%	+$40K	0.02%	494
2024 Q1	$42.6M	Buy	7,859,438 +81,541	+1%	+$470K	0.02%	422
2023 Q4	$48M	Buy	7,777,897 +96,622	+1%	+$475K	0.03%	385
2023 Q3	$39.9M	Sell	7,681,275 -10,936	-0.1%	-$58.4K	0.03%	406
2023 Q2	$38.7M	Buy	7,692,211 +1,073,985	+16%	+$4.35M	0.02%	440
2023 Q1	$24.4M	Buy	6,618,226 +36,025	+0.5%	+$136K	0.02%	530
2022 Q4	$23.7M	Buy	+6,582,201	New	+$34.5M	0.02%	532

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

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 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

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return

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

KLP

Kent Lake PR Anasco, Puerto Rico $198M AUM 5.21% 1-Year Est. Return

Janus Henderson Group's OABI Position: Q2 2025 in Review

Janus Henderson Group sold out of OmniAb (OABI) in Q2 2025, closing a stake of 8,058,228 shares — an estimated $19.5M sold.

Janus Henderson Group first reported a position in OABI in Q4 2022 and held it in 10 quarters. The position peaked at $48M in Q4 2023. 144 funds tracked by Wall St. Rank hold OABI as of Q2 2025.

Janus Henderson Group reported no remaining OmniAb position as of Q2 2025 after selling out during the quarter.
Janus Henderson Group sold 8,058,228 OmniAb shares in Q2 2025, an estimated $19.5M.
Janus Henderson Group first reported a position in OmniAb in Q4 2022 and held it in 10 quarters.
Janus Henderson Group's OmniAb position peaked at $48M in Q4 2023.
144 funds tracked by Wall St. Rank held OmniAb as of Q2 2025.

Based on Janus Henderson Group's 13F filing for Q2 2025, filed 14 Aug 2025.