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INBX in the 13F filings

Inhibrx Biosciences Inc · CUSIP 45720N103

Sector · Pharmaceuticals and biotechnologyTheme · Biological productsTheme · Healthcare: biopharma and medtech· L3VLUP-defined
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024
Quarter end
31 Mar 2026
the date the book describes
Filed
18 May 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
22
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 4 listed it in both
Shares listed
3,283,590
combined, among listed positions
Reported value
$221m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 12 buyers (opened or added shares) and 9 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -9,130.

Managers listing INBX in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

22 of 22 holders

ActionFiling
Viking Global Investors LP1,437,705$97m0.27%Held015 May 2026 (the filing on sec.gov)
Capital Research Global Investors392,847$26munder 0.1%Trimmed-28,72813 May 2026 (the filing on sec.gov)
Woodline Partners LP384,433$26m0.10%Added+244,95415 May 2026 (the filing on sec.gov)
Millennium Management LLC327,860$22munder 0.1%Added+51,94315 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC254,827$17m0.12%Added+40,10215 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP97,873$6.6munder 0.1%Trimmed-199,24315 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.77,437$5.2munder 0.1%Trimmed-44,66415 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)52,808$3.5munder 0.1%Added+6,53915 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC50,183$3.4munder 0.1%Trimmed-2,41714 May 2026 (the filing on sec.gov)
Citadel Advisors LLC33,157$2.2munder 0.1%Added+6,25715 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP30,980$2.1munder 0.1%Newnew14 May 2026 (the filing on sec.gov)
Wellington Management Group LLP25,785$1.7munder 0.1%Trimmed-2,60815 May 2026 (the filing on sec.gov)
Invesco Ltd23,356$1.6munder 0.1%Trimmed-89,04012 May 2026 (the filing on sec.gov)
Marshall Wace LLP20,888$1.4munder 0.1%Trimmed-8,42215 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC15,639$1.1munder 0.1%Added+12,24115 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC13,501$908kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
AllianceBernstein LP8,950$707kunder 0.1%Held015 May 2026 (the filing on sec.gov)
Jane Street Group LLC9,196$618kunder 0.1%Trimmed-23,82312 May 2026 (the filing on sec.gov)
AQR Capital Management LLC8,380$563kunder 0.1%Added+87915 May 2026 (the filing on sec.gov)
Tudor Investment Corp7,373$496kunder 0.1%Added+2,73115 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc7,012$472kunder 0.1%Added+1,67815 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd3,400$229kunder 0.1%Newnew18 May 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (3)

Exited (1)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
1 in Q3 2024 to 4 in Q2 2026

Tracked managers listing it, at least.

01234Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
INBX by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20241$25m10
Q3 20241$28m00
Q4 20241$28m00
Q1 20251$25m00
Q2 20252$35m10
Q3 20252$72m01
Q4 20254$175m129
Q1 20264$166m129
Q2 20264$245m1214

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

INBX and GILD →INBX and AMGN →INBX and ARGX →Choose a stock to compare with INBX →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own INBX, latest filings →Back to the 13F Explorer →