Inhibrx Biosciences, Inc. (INBX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

15,478,000Shares Outstanding

12,892,482Shares held by institutions

$1,069,431,382Value of institutional holdings

83.30%Institutional ownership %

25.67%Shares Changed QoQ

135No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Inhibrx Biosciences, Inc. (NASDAQ:INBX) is held by 135 institutional investors per 13F filings through December 2025.

Their combined ownership stood at 82.6% of outstanding shares in December 2025, up from 68.0% in September 2025.
Their total shares held in INBX increased 25.05% quarter over quarter, and separately, investors owning Inhibrx Biosciences increased 32.35% from a year ago.
Activity in INBX broke down as 81 buyers, 38 sellers, and 16 unchanged among 135 total holders.
In total, institutional investors held 12.79Mn shares in Inhibrx Biosciences as of December 2025, up by 2.56Mn shares quarter on quarter, and up 1.45Mn shares year over year.
As of December 31, 2025, PERCEPTIVE ADVISORS LLC held the largest stake in Inhibrx Biosciences with 1.45Mn shares, accounting for 9.39% of total shares outstanding.
The largest buyers of Inhibrx Biosciences for the quarter ending December 2025 were Morgan Stanley (724.87K), Capital Research Global Investors (421.58K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (297.12K), HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND (264.0K), Goldman Sachs Group Inc (175.27K).
Leading sellers of Inhibrx Biosciences shares for the quarter ending December 2025 were VIKING GLOBAL INVESTORS LP (350.0K), Woodline Partners LP (197.11K), KENNEDY CAPITAL MANAGEMENT LLC (90.42K), Groupe la Francaise (31.7K), CITADEL ADVISORS LLC (30.29K).
Per Business Quant data, the top 10 holders of Inhibrx Biosciences for the quarter ending December 2025 are PERCEPTIVE ADVISORS LLC (1.45Mn), VIKING GLOBAL INVESTORS LP (1.44Mn), Morgan Stanley (1.17Mn), Sanofi (1.16Mn), HighTower Advisors, LLC (870.51K), BlackRock, Inc. (777.38K), VANGUARD GROUP INC (623.08K), Sofinnova Investments, Inc. (454.66K), Capital Research Global Investors (421.58K), State Street Corp (374.96K).

135 Institutional Holders

12,892,482 Total Shares Held

Rows:

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Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
PERCEPTIVE ADVISORS LLC	31 Dec, 2025	1,452,707	125,000	9.41%	$114,763,853.00
VIKING GLOBAL INVESTORS LP	31 Dec, 2025	1,437,705	-350,000	-19.58%	$113,578,695.00
Morgan Stanley	31 Dec, 2025	1,167,728	724,872	163.68%	$92,250,538.00
Sanofi	31 Dec, 2025	1,157,926	0	0.00%	$91,476,154.00
HighTower Advisors, LLC	31 Dec, 2025	870,507	-1,252	-0.14%	$68,770,053.00
BlackRock, Inc.	31 Dec, 2025	777,383	92,637	13.53%	$61,413,257.00
VANGUARD GROUP INC	31 Dec, 2025	623,084	28,166	4.73%	$49,223,636.00
Sofinnova Investments, Inc.	31 Dec, 2025	454,657	14,565	3.31%	$35,917,903.00
Capital Research Global Investors	31 Dec, 2025	421,575	421,575	0.00%	$33,304,425.00
State Street Corp	31 Dec, 2025	374,961	171,038	83.87%	$29,621,919.00
Caligan Partners LP	31 Dec, 2025	323,565	87,182	36.88%	$25,561,635.00
SUSQUEHANNA INTERNATIONAL GROUP, LLP	31 Dec, 2025	297,116	297,116	0.00%	$23,472,164.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	275,917	-21,903	-7.35%	$21,797,443.00
PFM Health Sciences, LP	31 Dec, 2025	265,517	25,873	10.80%	$20,975,843.00
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	31 Dec, 2025	264,000	264,000	0.00%	$20,856,000.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	226,009	4,089	1.84%	$17,858,743.00
Schonfeld Strategic Advisors LLC	31 Dec, 2025	214,725	117,343	120.50%	$16,963,275.00
Goldman Sachs Group Inc	31 Dec, 2025	201,234	175,268	674.99%	$15,897,486.00
Woodline Partners LP	31 Dec, 2025	139,479	-197,111	-58.56%	$11,018,841.00
NORGES BANK	31 Dec, 2025	133,300	133,300	0.00%	$10,530,700.00

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