Inhibrx Biosciences INBX Institutional Ownership

NASDAQ INBX

$101.25 +1.17 (+1.17%)

As of: Oct 1, 2026 · 10:06 AM EDT

Institutions by Trading Activity

165 Institutions

Increased 110 66.7%

Unchanged 16 9.7%

Reduced 39 23.6%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

91.63%

▲+9.53 pp QoQ

Shares Held by Institutions

14.36Mn

of 15.67Mn outstanding

▲+16.29% QoQ

Shares Outstanding

15.67Mn

1.31Mn held outside 13F filers

Institutional Investors

165

filed 13F for Jun 2026

▲+30 vs prior quarter

Net Shares Added (QoQ)

+2.01Mn

accumulated since last quarter

Value of Holdings

$1.44Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Inhibrx Biosciences, Inc. (NASDAQ:INBX) showed up in the 13F filings of 165 institutional investors as of June 2026.

Their combined ownership stood at 91.6% of outstanding shares in June 2026, up from 82.1% in March 2026.
Their total shares held in INBX increased 16.29% quarter over quarter, and separately, investors owning Inhibrx Biosciences increased 87.5% from a year ago.
Of these 165 holders, 110 added to their stakes in Inhibrx Biosciences, 39 trimmed positions, and 16 made no changes.
Combined, these investors held 14.36Mn shares in INBX for June 2026, up by 2.01Mn shares quarter on quarter, and up 3.95Mn shares year over year.
As of June 30, 2026, Morgan Stanley held the largest stake in Inhibrx Biosciences with 1.31Mn shares, accounting for 8.35% of total shares outstanding.
Leading buyers of Inhibrx Biosciences shares for the quarter ending June 2026 were Bank Of America Corp /De/ (808.46K), Schonfeld Strategic Advisors LLC (442.76K), Parkman Healthcare Partners LLC (256.95K), Goldman Sachs Group Inc (243.1K), First Turn Management, LLC (164.78K).
The biggest sellers of Inhibrx Biosciences for the quarter ending June 2026 included VIKING GLOBAL INVESTORS LP (313.78K), MILLENNIUM MANAGEMENT LLC (180.66K), PERCEPTIVE ADVISORS LLC (144.94K), SummitTX Capital, L.P. (122.57K), Sofinnova Investments, Inc. (102.93K).
Per Business Quant data, the top 10 holders of Inhibrx Biosciences for the quarter ending June 2026 are Morgan Stanley (1.31Mn), PERCEPTIVE ADVISORS LLC (1.3Mn), Sanofi (1.16Mn), VIKING GLOBAL INVESTORS LP (1.12Mn), HighTower Advisors, LLC (870.55K), Bank Of America Corp /De/ (841.14K), BlackRock, Inc. (825.97K), Schonfeld Strategic Advisors LLC (697.59K), State Street Corp (640.46K), VANGUARD CAPITAL MANAGEMENT LLC (492.48K).

Form 13F Holdings

165 Institutional Holders

Report period 30 Jun, 2026

Total shares held 14.36Mn

Of outstanding 91.63%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Morgan Stanley	0000895421	1,308,051	8.35%	▲44,973	+3.56%	$123.94Mn
2	PERCEPTIVE ADVISORS LLC	0001224962	1,297,763	8.28%	▼144,944	-10.05%	$122.96Mn
3	Sanofi	0001121404	1,157,926	7.39%	0	0.00%	$109.71Mn
4	VIKING GLOBAL INVESTORS LP	0001103804	1,123,929	7.17%	▼313,776	-21.82%	$106.49Mn
5	HighTower Advisors, LLC	0001462245	870,551	5.56%	▲351	+0.04%	$82.48Mn
6	Bank Of America Corp /De/	0000070858	841,141	5.37%	▲808,458	+2,473.63%	$79.70Mn
7	BlackRock, Inc.	0002012383	825,972	5.27%	▲27,074	+3.39%	$78.26Mn
8	Schonfeld Strategic Advisors LLC	0001665241	697,586	4.45%	▲442,759	+173.75%	$66.10Mn
9	State Street Corp	0000093751	640,458	4.09%	▲89,613	+16.27%	$60.68Mn
10	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	492,477	3.14%	▲6,055	+1.24%	$46.66Mn
11	Woodline Partners LP	0001784547	400,892	2.56%	▲16,459	+4.28%	$37.98Mn
12	Capital Research Global Investors	0001422848	363,050	2.32%	▼29,797	-7.58%	$34.40Mn
13	Goldman Sachs Group Inc	0000886982	338,176	2.16%	▲243,102	+255.70%	$32.04Mn
14	PFM Health Sciences, LP	0001442756	308,385	1.97%	▲2,954	+0.97%	$29.22Mn
15	Sofinnova Investments, Inc.	0001631134	303,103	1.93%	▼102,926	-25.35%	$28.72Mn
16	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	0001535845	271,700	1.73%	▲101,000	+59.17%	$25.74Mn
17	Parkman Healthcare Partners LLC	0001777015	256,950	1.64%	▲256,950	0.00%	$24.35Mn
18	GEODE CAPITAL MANAGEMENT, LLC	0001214717	256,175	1.63%	▲24,666	+10.65%	$24.28Mn
19	First Turn Management, LLC	0001993440	164,783	1.05%	▲164,783	0.00%	$15.61Mn
20	MILLENNIUM MANAGEMENT LLC	0001273087	147,200	0.94%	▼180,660	-55.10%	$13.95Mn

Showing 1 to 20 of 165 holders