Inhibrx Biosciences Ownership | Who Owns Inhibrx Biosciences?

Overview Forecast RevenueFinancials Chart

Inhibrx Biosciences Ownership Summary

Inhibrx Biosciences is owned by 25.49% institutional investors, 27.17% insiders, and 47.33% retail investors. Viking global investors lp is the largest institutional shareholder, holding 11.56% of INBX shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.32% of its assets in Inhibrx Biosciences shares.

INBX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Inhibrx Biosciences	25.49%	27.17%	47.33%
Sector	Healthcare Stocks	42.54%	10.83%	46.63%
Industry	Biotech Stocks	45.22%	10.75%	44.04%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Viking global investors lp	1.79M	11.56%	$60.21M
Perceptive advisors	1.33M	8.58%	$44.72M
Sanofi	1.16M	7.49%	$39.00M
Hightower advisors	871.76K	5.64%	$29.36M
Blackrock funding, inc. /de	684.75K	4.43%	$23.06M
Vanguard group	594.92K	3.85%	$20.04M
Morgan stanley	442.86K	2.86%	$14.92M
Sofinnova investments	440.09K	2.85%	$14.82M
Woodline partners lp	336.59K	2.18%	$11.34M
Millennium management	255.34K	1.76%	$3.57M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Sanofi	1.16M	14.98%	$39.00M
Perceptive advisors	1.33M	1.29%	$44.72M
Caligan partners lp	236.38K	1.04%	$7.96M
Sofinnova investments	440.09K	0.81%	$14.82M
Birchview capital, lp	31.70K	0.81%	$1.07M
Pfm health sciences, lp	239.64K	0.62%	$8.07M
Acuta capital partners	16.38K	0.57%	$551.58K
Slotnik capital	41.40K	0.44%	$1.39M
Readystate asset management lp	170.16K	0.24%	$5.73M
Viking global investors lp	1.79M	0.16%	$60.21M

Top Buyers

Holder	Shares	% Assets	Change
Morgan stanley	442.86K	0.00%	415.05K
Perceptive advisors	1.33M	1.29%	349.81K
Caligan partners lp	236.38K	1.04%	236.38K
Readystate asset management lp	170.16K	0.24%	143.32K
Summittx capital	54.14K	0.08%	54.14K

Top Sellers

Holder	Shares	% Assets	Change
Blackrock	-	-	-2.75M
Ra capital management	-	-	-2.63M
Tcg crossover management	-	-	-1.75M
Citadel advisors	-	-	-1.20M
Alpine associates management	-	-	-1.05M

New Positions

Holder	Shares	% Assets	Change	Value
Caligan partners lp	236.38K	1.04%	236.38K	$7.96M
Summittx capital	54.14K	0.08%	54.14K	$1.82M
Wellington management group llp	29.76K	0.00%	29.76K	$1.00M
Marshall wace, llp	27.24K	0.00%	27.24K	$917.51K
Acuta capital partners	16.38K	0.57%	16.38K	$551.58K

Sold Out

Holder	Change
Quest partners	-1.00
Financial gravity asset management	-2.00
Ifp advisors	-4.00
Jones financial companies lllp	-4.00
Lindbrook capital	-17.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	40	-54.02%	3,943,558	-62.21%	25	0.56%	11	-64.52%	14	-58.82%
Jun 30, 2025	86	-10.42%	10,434,307	-3.62%	67	1.38%	30	3.45%	34	-5.56%
Mar 31, 2025	9	-91.59%	2,655,100	-76.21%	18	0.35%	2	-95.74%	2	-93.55%
Dec 31, 2024	107	2.88%	11,162,060	25.45%	72	2.18%	47	-20.34%	31	72.22%
Sep 30, 2024	104	10.64%	8,897,409	-8.12%	57	1.29%	59	118.52%	18	-70.49%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	1.22M	2.32%	94.03K
Vanguard Institutional Extnd Mkt Idx Tr	394.10K	0.75%	-76.00
The Merger Fund A	198.51K	0.38%	198.51K
Vanguard Russell 2000 ETF	129.24K	0.25%	1.43K
Meridian Small Cap Growth Legacy	123.63K	0.24%	-39.95K
ArrowMark Small Cap Gro	123.63K	0.24%	-39.95K
NT R2000 Index Fund - NL	95.63K	0.18%	-1.93K
NT R2000 Index Fund - DC - NL - 2	75.94K	0.14%	-886.00
NT R2000 Growth Index Fund - NL	65.89K	0.13%	-2.36K
iShares Russell 2000 Small-Cap Idx Instl	64.02K	0.12%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Oct 07, 2025	VIKING GLOBAL INVESTORS LP	-	Sell	$9.95M
Oct 07, 2025	VIKING GLOBAL INVESTORS LP	-	Sell	$526.16K
Oct 07, 2025	VIKING GLOBAL INVESTORS LP	-	Sell	$807.60K
Nov 20, 2024	Kayyem Jon Faiz	-	Buy	$266.10K
Nov 19, 2024	Kayyem Jon Faiz	-	Buy	$495.71K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	3
2025 Q2	-	-
2025 Q1	-	-
2024 Q4	3	-
2024 Q3	7	-

INBX Ownership FAQ

Who Owns Inhibrx Biosciences?

Inhibrx Biosciences shareholders are primarily institutional investors at 25.49%, followed by 27.17% insiders and 47.34% retail investors. The average institutional ownership in Inhibrx Biosciences's industry, Biotech Stocks , is 45.22%, which Inhibrx Biosciences falls below.

Who owns the most shares of Inhibrx Biosciences?

Inhibrx Biosciences’s largest shareholders are Viking global investors lp (1.79M shares, 11.56%), Perceptive advisors (1.33M shares, 8.58%), and Sanofi (1.16M shares, 7.49%). Together, they hold 27.63% of Inhibrx Biosciences’s total shares outstanding.

Does Blackrock own Inhibrx Biosciences?

BlackRock is not among the top 10 institutional shareholders of Inhibrx Biosciences.

Who is Inhibrx Biosciences’s biggest shareholder by percentage of total assets invested?

Sanofi is Inhibrx Biosciences’s biggest shareholder by percentage of total assets invested, with 14.98% of its assets in 1.16M Inhibrx Biosciences shares, valued at 39M$.

Who is the top mutual fund holder of Inhibrx Biosciences shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Inhibrx Biosciences shares, with 2.32% of its total shares outstanding invested in 1.22M Inhibrx Biosciences shares.

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