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ALXO · Alx Oncology Holdings Inc · Shareholders & Ownership

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$1.19 -0.05 (-4.03%)
Market Cap
$165.24M
Shares
138.28M
Volume · Oct 21 669.47K Avg daily vol (3M) 1.15M

Every disclosed holder of ALXO in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

Who Owns ALXO

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions
Holder group Shares % Out
Institutional (13F) 105,189,888 76.07%
Insiders (Forms 3, 4, 5) 1,243,678 0.90%
13D/G-only blocks 25,213,092 18.23%
Remaining 6,630,339 4.80%
Registered funds (N-PORT, not summed) 13,127,965 9.49%

Shares outstanding: 138,276,997, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of ALXO

# Holder Shares
1
RA CAPITAL MANAGEMENT, L.P.
13F CIK 1346824 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
13,011,849
2
venBio Partners LLC
13F CIK 1776382 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
12,884,638
3
HBM Healthcare Investments (Cayman) Ltd.
13G CIK 1232258 · Unknown · Mar 31, 2026
Rule 13d-1(c), passive investor
8,590,692
4
BlackRock, Inc.
13F CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
7,399,530
4.1
BlackRock, Inc.
13G CIK 2012383 · Holding company · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
7,327,850
4.2
iShares Russell 2000 ETF
Fund S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
2,598,748
4.3
iShares Russell 2000 Growth ETF
Fund S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
1,013,254
4.4
iShares Micro-Cap ETF
Fund S000004439 · Registered fund · Jun 30, 2026
iShares Trust, not summed
361,777
4.5
Master Small Cap Index Series
Fund S000002716 · Registered fund · Jun 30, 2026
Quantitative Master Series LLC, not summed
201,688
5
Redmile Group, LLC
13F CIK 1425738 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
7,392,504
6
Blackstone Inc.
13F CIK 1393818 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
6,593,543
7
Driehaus Capital Management LLC
13F CIK 938206 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
6,025,240
8
SILVERARC CAPITAL MANAGEMENT, LLC
13F CIK 1816307 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
5,744,757
9
TCG Crossover GP II, LLC
13G CIK 1969280 · Unknown · Jun 30, 2026
Rule 13d-1(c), passive investor
5,655,487
10
TCG Crossover Management, LLC
13F CIK 1839948 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
5,655,487
11
VANGUARD CAPITAL MANAGEMENT LLC
13F CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
4,973,436
12
venBio Global Strategic Fund, L.P.
13D CIK 1504130 · Unknown · Oct 14, 2026
Item 4 purpose: Other
4,307,034
13
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
3,642,854
14
TANG CAPITAL MANAGEMENT, LLC
13G CIK 1191935 · Unknown · Dec 31, 2024
Rule 13d-1(c), passive investor
3,296,883
15
Vivo Capital, LLC
13F CIK 1674712 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,184,713
16
MARSHALL WACE, LLP
13F CIK 1318757 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,071,496
17
5AM Venture Management, LLC
13F CIK 1799883 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,057,325
18
Almitas Capital LLC
13F CIK 1596468 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,938,431
19
ORBIMED ADVISORS LLC
13F CIK 1055951 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,866,256
20
GEODE CAPITAL MANAGEMENT, LLC
13F CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,787,809
21
TWO SIGMA INVESTMENTS, LP
13F CIK 1179392 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,178,176
22
Vivo Capital Fund IX, L.P.
13G CIK 1750117 · Sep 30, 2024
Rule 13d-1(c), passive investor
1,813,864
23
LSV Associates, LLC
13D CIK 1643828 · Unknown · May 27, 2026
Item 4 purpose: not restated by this amendment, the earlier 13D's purpose stands
1,549,132
24
MILLENNIUM MANAGEMENT LLC
13F CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,543,594
25
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
1,498,905
25.1
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
45,100
25.2
State Street Total Return V.I.S. Fund
Fund S000001637 · Registered fund · Jun 30, 2026
STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
2,724
26
ACADIAN ASSET MANAGEMENT LLC
13F CIK 916542 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,313,490
27
VANGUARD EXTENDED MARKET INDEX FUND
Fund S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
1,164,899
28
JPMORGAN CHASE & CO
13F CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
1,044,728
29
NORTHERN TRUST CORP
13F CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
935,669
29.1
Small Cap Index Fund
Fund S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
56,054
29.2
Small Cap Core Fund
Fund S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
15,752
30
Ensign Peak Advisors, Inc
13F CIK 1454984 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
810,297
31
Nantahala Capital Management, LLC
13F CIK 1472322 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
750,000
32
VANGUARD PORTFOLIO MANAGEMENT LLC
13F CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
749,229
33
VANGUARD FIDUCIARY TRUST CO
13F CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
743,491
34
GOLDMAN SACHS GROUP INC
13F CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
742,331
34.1
Goldman Sachs Small Cap Growth Insights Fund
Fund S000014930 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
83,966
34.2
Goldman Sachs Variable Insurance Trust Small Cap Equity Insights Fund
Fund S000009355 · Registered fund · Jun 30, 2026
Goldman Sachs Variable Insurance Trust, not summed
12,550
35
RENAISSANCE TECHNOLOGIES LLC
13F CIK 1037389 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
603,797
36
Pons Jaume
Insider CIK 1816977 · Feb 19, 2025
PRESIDENT & CSO, issuer-wide
579,388
37
ADAR1 Capital Management, LLC
13F CIK 1940272 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
533,660
38
UBS Group AG
13F CIK 1610520 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
462,943
39
GSA CAPITAL PARTNERS LLP
13F CIK 1362033 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
413,545
40
JPMorgan U.S. Small Company Fund
Fund S000002795 · Registered fund · Jun 30, 2026
JPMorgan Trust I, not summed
393,960
41
Lettmann Jason
Insider CIK 1688269 · Aug 17, 2026
Director, CHIEF EXECUTIVE OFFICER, issuer-wide
294,379
42
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
241,113
42.1
Schwab Small-Cap Index Fund
Fund S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
260,212
43
Bank of New York Mellon Corp
13F CIK 1390777 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
238,447
44
BRIDGEWAY CAPITAL MANAGEMENT, LLC
13F CIK 1107261 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
226,072
44.1
Ultra-Small Company Market Fund
Fund S000004424 · Registered fund · Jun 30, 2026
Bridgeway Funds, Inc., not summed
211,000
44.2
Ultra-Small Company Fund
Fund S000004423 · Registered fund · Jun 30, 2026
Bridgeway Funds, Inc., not summed
15,072
45
Atom Investors LP
13F CIK 1738902 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
219,382
46
IEQ CAPITAL, LLC
13F CIK 1779789 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
175,382
47
MORGAN STANLEY
13F CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
157,873
48
Invesco Ltd.
13F CIK 914208 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
149,923
48.1
Invesco RAFI US 1500 Small-Mid ETF
Fund S000013120 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
35,672
49
Nuveen, LLC
13F CIK 1871926 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
143,645
49.1
Nuveen Small Cap Blend Index Fund
Fund S000005367 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
143,645
50
SUSQUEHANNA INTERNATIONAL GROUP, LLP
13F CIK 1446194 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
123,157

3 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 154 holders

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Key facts CIK 1810182 CUSIP 00166B105 13F (30d) 6 filings 6 filers Visit website Investor relations