Cornerstone Capital’s OmniAb OABI Stock Holding History

Cornerstone Capital’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	$223K	Buy	142,286 +33,075	+30%	+$59.7K	0.02%	111
2025 Q4	$202K	Hold	109,211	–	–	0.02%	105
2025 Q3	$175K	Sell	109,211 -54,551	-33%	-$99.7K	0.02%	104
2025 Q2	$285K	Sell	163,762 -8,254	-5%	-$13.8K	0.03%	86
2025 Q1	$413K	Hold	172,016	–	–	0.04%	81
2024 Q4	$609K	Hold	172,016	–	–	0.06%	71
2024 Q3	$728K	Hold	172,016	–	–	0.07%	69
2024 Q2	$645K	Hold	172,016	–	–	0.07%	67
2024 Q1	$932K	Buy	172,016 +6,000	+4%	+$34.6K	0.1%	61
2023 Q4	$1.02M	Hold	166,016	–	–	0.11%	61
2023 Q3	$862K	Hold	166,016	–	–	0.1%	58
2023 Q2	$835K	Sell	166,016 -8,643	-5%	-$35K	0.1%	59
2023 Q1	$643K	Hold	174,659	–	–	0.08%	65
2022 Q4	$629K	Buy	+174,659	New	+$917K	0.08%	66

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

Cornerstone Capital's OABI Position: Q1 2026 in Review

Cornerstone Capital increased its OmniAb (OABI) stake by 30% in Q1 2026, buying an estimated $59.7K and bringing the position to 142,286 shares worth $223K. The position accounts for 0.02% of the portfolio, ranked #111.

Cornerstone Capital first reported a position in OABI in Q4 2022 and has held it in 14 quarters since. The position peaked at $1.02M in Q4 2023. 128 funds tracked by Wall St. Rank hold OABI as of Q1 2026.

Cornerstone Capital held 142,286 shares of OmniAb worth $223K as of Q1 2026.
Cornerstone Capital bought 33,075 OmniAb shares in Q1 2026, an estimated $59.7K.
OmniAb made up 0.02% of Cornerstone Capital's portfolio in Q1 2026, its #111 holding.
Cornerstone Capital first reported a position in OmniAb in Q4 2022 and has held it in 14 quarters since.
Cornerstone Capital's OmniAb position peaked at $1.02M in Q4 2023.
128 funds tracked by Wall St. Rank held OmniAb as of Q1 2026.

Based on Cornerstone Capital's 13F filing for Q1 2026, filed 12 May 2026.