Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

ALX ONCOLOGY HOLDINGS INC

CIK 0001810182ALXO· quarter ending 2026-06-30

Shares outstanding

138,276,997

as of 2026-07-30 · 10-Q cover page, filed 2026-08-06

Held by 13F filers

105,937,916

76.6% of shares outstanding

Holders

+24 vs 2026-03-31 · 36 new, 12 exited

Value

$219.4M

shares +12.4% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-06, as of 2026-07-30)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	ALXO · NASDAQ	138,276,997	105,937,916	76.6%	93	00166B105

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	00166B105	COM	93	105,937,916	138,276,997	76.6%	$219.4M	2 call / 0 put	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (93 of 93 · 00166B105)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	RA CAPITAL MANAGEMENT, L.P.	13,011,849	9.41%	$26.9M	—
2	venBio Partners LLC	12,884,638	9.32%	$26.7M	—
3	BlackRock, Inc.	7,399,530	5.35%	$15.3M	+6,951,731 (+1552.4%)
4	Redmile Group, LLC	7,392,504	5.35%	$15.3M	-571,684 (-7.2%)
5	Blackstone Inc.	6,593,543	4.77%	$13.6M	+766,999 (+13.2%)
6	Driehaus Capital Management LLC	6,025,240	4.36%	$12.5M	+290,620 (+5.1%)
7	SILVERARC CAPITAL MANAGEMENT, LLC	5,744,757	4.15%	$11.9M	NEW
8	TCG Crossover Management, LLC	5,655,487	4.09%	$11.7M	-7,356,362 (-56.5%)
9	VANGUARD CAPITAL MANAGEMENT LLC	4,973,436	3.60%	$10.3M	+793,700 (+19.0%)
10	Vivo Capital, LLC	3,184,713	2.30%	$6.6M	—
11	MARSHALL WACE, LLP	3,071,496	2.22%	$6.4M	-685,720 (-18.3%)
12	5AM Venture Management, LLC	3,057,325	2.21%	$6.3M	—
13	Almitas Capital LLC	2,938,431	2.13%	$6.1M	-235,403 (-7.4%)
14	ORBIMED ADVISORS LLC	2,866,256	2.07%	$5.9M	—
15	GEODE CAPITAL MANAGEMENT, LLC	2,787,809	2.02%	$5.8M	+2,294,372 (+465.0%)
16	TWO SIGMA INVESTMENTS, LP	2,178,176	1.58%	$4.5M	+590,343 (+37.2%)
17	MILLENNIUM MANAGEMENT LLC	1,543,594	1.12%	$3.2M	-444,965 (-22.4%)
18	Nantahala Capital Management, LLC	1,500,000	1.08%	$3.1M	NEW
19	STATE STREET CORP	1,498,905	1.08%	$3.1M	+1,323,077 (+752.5%)
20	ACADIAN ASSET MANAGEMENT LLC	1,313,490	0.95%	$2.7M	+212,465 (+19.3%)
21	JPMORGAN CHASE & CO	1,044,728	0.76%	$2.3M	+1,044,629 (+1055180.8%)
22	NORTHERN TRUST CORP	935,669	0.68%	$1.9M	+798,705 (+583.1%)
23	Ensign Peak Advisors, Inc	810,297	0.59%	$1.7M	-140,253 (-14.8%)
24	VANGUARD PORTFOLIO MANAGEMENT LLC	749,229	0.54%	$1.6M	+651,348 (+665.4%)
25	VANGUARD FIDUCIARY TRUST CO	743,491	0.54%	$1.5M	+449,013 (+152.5%)
26	GOLDMAN SACHS GROUP INC	742,331	0.54%	$1.5M	+603,738 (+435.6%)
27	RENAISSANCE TECHNOLOGIES LLC	603,797	0.44%	$1.2M	-128,802 (-17.6%)
28	ADAR1 Capital Management, LLC	533,660	0.39%	$1.1M	NEW
29	UBS Group AG	462,943	0.33%	$958K	-451,811 (-49.4%)
30	GSA CAPITAL PARTNERS LLP	413,545	0.30%	$856K	+344,558 (+499.5%)
31	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	241,113	0.17%	$499K	NEW
32	Bank of New York Mellon Corp	238,447	0.17%	$494K	NEW
33	BRIDGEWAY CAPITAL MANAGEMENT, LLC	226,072	0.16%	$468K	+150,000 (+197.2%)
34	Atom Investors LP	219,382	0.16%	$454K	NEW
35	IEQ CAPITAL, LLC	175,382	0.13%	$363K	+83,149 (+90.2%)
36	MORGAN STANLEY	157,873	0.11%	$327K	+59,038 (+59.7%)
37	Invesco Ltd.	149,923	0.11%	$310K	+138,943 (+1265.4%)
38	Nuveen, LLC	143,645	0.10%	$297K	NEW
39	SUSQUEHANNA INTERNATIONAL GROUP, LLP	123,157	0.09%	$255K	-1,205,750 (-90.7%)
40	RHUMBLINE ADVISERS	107,902	0.08%	$223K	NEW
41	DEUTSCHE BANK AG\	107,428	0.08%	$222K	NEW
42	WELLS FARGO & COMPANY/MN	99,926	0.07%	$207K	NEW
43	PRICE T ROWE ASSOCIATES INC /MD/	89,779	0.06%	$186K	NEW
44	Verdad Advisers, LP	82,200	0.06%	$170K	NEW
45	BANK OF AMERICA CORP /DE/	76,032	0.05%	$157K	-501,751 (-86.8%)
46	Graham Capital Management, L.P.	74,821	0.05%	$155K	+37,082 (+98.3%)
47	XTX Topco Ltd	69,657	0.05%	$144K	+25,516 (+57.8%)
48	MetLife Investment Management, LLC	64,959	0.05%	$134K	NEW
49	CITIGROUP INC	50,635	0.04%	$105K	+50,618 (+297752.9%)
50	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	49,682	0.04%	$103K	NEW
51	Squarepoint Ops LLC	46,869	0.03%	$97K	NEW
52	Vanguard Global Advisers, LLC	43,038	0.03%	$89K	+33,070 (+331.8%)
53	AXQ CAPITAL, LP	40,553	0.03%	$84K	NEW
54	WEALTH ENHANCEMENT ADVISORY SERVICES, LLC	38,011	0.03%	$81K	+14 (+0.0%)
55	NEW YORK STATE COMMON RETIREMENT FUND	33,100	0.02%	$69K	NEW
56	BARCLAYS PLC	32,884	0.02%	$68K	+22,369 (+212.7%)
57	Police & Firemen's Retirement System of New Jersey	31,822	0.02%	$66K	NEW
58	MANUFACTURERS LIFE INSURANCE COMPANY, THE	30,997	0.02%	$64K	NEW
59	ALLIANCEBERNSTEIN L.P.	26,340	0.02%	$53K	NEW
60	JACOBS LEVY EQUITY MANAGEMENT, INC	25,507	0.02%	$53K	NEW
61	HC Advisors, LLC	22,900	0.02%	$47K	—
62	Callan Family Office, LLC	22,419	0.02%	$46K	—
63	VOYA INVESTMENT MANAGEMENT LLC	21,461	0.02%	$44K	NEW
64	AMERICAN CENTURY COMPANIES INC	21,434	0.02%	$44K	NEW
65	CAXTON CORP	20,946	0.02%	$43K	—
66	INTECH INVESTMENT MANAGEMENT LLC	19,424	0.01%	$40K	NEW
67	COMMONWEALTH EQUITY SERVICES, LLC	18,451	0.01%	$38K	NEW
68	Bronte Capital Management Pty Ltd.	18,095	0.01%	$37K	NEW
69	JSF Financial, LLC	17,500	0.01%	$36K	—
70	BNP PARIBAS FINANCIAL MARKETS	16,616	0.01%	$34K	+16,150 (+3465.7%)
71	PRUDENTIAL FINANCIAL INC	16,385	0.01%	$34K	NEW
72	MONETA GROUP INVESTMENT ADVISORS LLC	15,196	0.01%	$31K	—
73	ProShare Advisors LLC	14,125	0.01%	$29K	NEW
74	FMR LLC	13,242	0.01%	$27K	+256 (+2.0%)
75	Lido Advisors, LLC	13,220	0.01%	$27K	—
76	Abel Hall, LLC	12,731	0.01%	$26K	+133 (+1.1%)
77	Beacon Pointe Advisors, LLC	12,500	0.01%	$26K	—
78	China Universal Asset Management Co., Ltd.	12,500	0.01%	$26K	NEW
79	Legal & General Group Plc	10,483	0.01%	$22K	NEW
80	Tower Research Capital LLC (TRC)	10,397	0.01%	$22K	NEW
81	XPONANCE LLC	10,179	0.01%	$21K	NEW
82	HSBC HOLDINGS PLC	10,105	0.01%	$22K	—
83	Ameritas Investment Partners, Inc.	9,792	0.01%	$20K	NEW
84	Russell Investments Group, Ltd.	8,628	0.01%	$18K	NEW
85	ROYAL BANK OF CANADA	6,156	0.00%	$13K	+4,277 (+227.6%)
86	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	1,486	0.00%	$3K	NEW
87	NISA INVESTMENT ADVISORS, LLC	1,106	0.00%	$2K	—
88	Bradley & Co. Private Wealth Management, LLC	1,000	0.00%	$2K	—
89	EverSource Wealth Advisors, LLC	905	0.00%	$2K	—
90	Sterling Capital Management LLC	379	0.00%	$785	NEW
91	PNC Financial Services Group, Inc.	100	0.00%	$207	—
92	Caitong International Asset Management Co., Ltd	36	0.00%	$75	+30 (+500.0%)
93	SBI Securities Co., Ltd.	14	0.00%	$29	—

Exited since 2026-03-31 (12 filers; largest 12 shown)

ADAGE CAPITAL PARTNERS GP, L.L.C.	−2,000,000
Squadron Capital Management LLC	−1,460,000
Qube Research & Technologies Ltd	−107,647
BANK OF NOVA SCOTIA	−105,858
JANE STREET GROUP, LLC	−95,101
Brevan Howard Capital Management LP	−79,389
OMERS ADMINISTRATION Corp	−75,000
Point72 Asset Management, L.P.	−41,095
NINE MASTS CAPITAL Ltd	−20,623
TWO SIGMA SECURITIES, LLC	−10,993
CWM, LLC	−65
Optiver Holding B.V.	−27

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
TCG Crossover Fund III, L.P.	SCHEDULE 13G/A	2026-08-14	2026-06-30	2,827,748	2.1%
TCG Crossover GP II, LLC	SCHEDULE 13G/A	2026-08-14	2026-06-30	2,827,739	2.1%
Chen Yu	SCHEDULE 13G/A	2026-08-14	2026-06-30	5,655,487	4.2%
TCG Crossover GP III, LLC	SCHEDULE 13G/A	2026-08-14	2026-06-30	2,827,748	2.1%
TCG Crossover Fund II, L.P.	SCHEDULE 13G/A	2026-08-14	2026-06-30	2,827,739	2.1%
BlackRock, Inc.	SCHEDULE 13G	2026-07-27	2026-06-30	7,327,850	5.4%
Jean George	SCHEDULE 13D/A	2026-05-27	2026-05-27	2,942,525	2.2%
Henry A. Plain Jr	SCHEDULE 13D/A	2026-05-27	2026-05-27	2,942,525	2.2%
Michael A Carusi	SCHEDULE 13D/A	2026-05-27	2026-05-27	2,942,525	2.2%
Lightstone Ventures (A), L.P.	SCHEDULE 13D/A	2026-05-27	2026-05-27	185,870	0.1%
Lightstone Ventures II (A), L.P.	SCHEDULE 13D/A	2026-05-27	2026-05-27	78,138	0.1%
Lightstone Ventures II, L.P.	SCHEDULE 13D/A	2026-05-27	2026-05-27	1,315,255	1%
Lightstone Ventures, L.P.	SCHEDULE 13D/A	2026-05-27	2026-05-27	1,363,262	1%
LSV Associates II, LLC	SCHEDULE 13D/A	2026-05-27	2026-05-27	1,393,393	1%
LSV Associates, LLC	SCHEDULE 13D/A	2026-05-27	2026-05-27	1,549,132	1.2%
HBM Healthcare Investments (Cayman) Ltd.	SCHEDULE 13G/A	2026-05-15	2026-03-31	8,590,692	6.5%
Redmile Group, LLC	SCHEDULE 13G/A	2026-05-15	2026-03-31	9,214,188	6.8%
Jeremy C. Green	SCHEDULE 13G/A	2026-05-15	2026-03-31	9,214,188	6.8%
Redmile Biopharma Investments III, L.P.	SCHEDULE 13G/A	2026-05-15	2026-03-31	5,267,838	3.9%
Millennium Group Management LLC	SCHEDULE 13G/A	2026-04-28	2026-03-31	1,988,559	1.5%
Israel A. Englander	SCHEDULE 13G/A	2026-04-28	2026-03-31	1,988,559	1.5%
Millennium Management LLC	SCHEDULE 13G/A	2026-04-28	2026-03-31	1,988,559	1.5%
Integrated Core Strategies (US) LLC	SCHEDULE 13G/A	2026-04-28	2026-03-31	730,528	0.5%
Peter Kolchinsky	SCHEDULE 13G	2026-02-09	2026-02-02	13,117,106	9.9%
RA Capital Healthcare Fund, L.P.	SCHEDULE 13G	2026-02-09	2026-02-02	13,117,106	9.9%
RA Capital Management, L.P.	SCHEDULE 13G	2026-02-09	2026-02-02	13,117,106	9.9%
Rajeev Shah	SCHEDULE 13G	2026-02-09	2026-02-02	13,117,106	9.9%
venBio Global Strategic GP, Ltd.	SCHEDULE 13D/A	2026-02-04	2026-02-02	4,431,600	3.4%
venBio Global Strategic GP, L.P.	SCHEDULE 13D/A	2026-02-04	2026-02-02	4,431,600	3.4%
venBio Global Strategic GP II, Ltd.	SCHEDULE 13D/A	2026-02-04	2026-02-02	8,453,038	6.4%
venBio Global Strategic GP II, L.P.	SCHEDULE 13D/A	2026-02-04	2026-02-02	8,453,038	6.4%
venBio Global Strategic Fund, L.P.	SCHEDULE 13D/A	2026-02-04	2026-02-02	4,431,600	3.4%
venBio Global Strategic Fund II L.P.	SCHEDULE 13D/A	2026-02-04	2026-02-02	8,453,038	6.4%
Adelman Robert J	SCHEDULE 13D/A	2026-02-04	2026-02-02	12,984,044	9.9%
GOODMAN COREY S	SCHEDULE 13D/A	2026-02-04	2026-02-02	13,163,549	10%
TANG CAPITAL PARTNERS INTERNATIONAL, LP	SCHEDULE 13G/A	2025-11-14	2025-09-30	0	0%
TANG CAPITAL PARTNERS, LP	SCHEDULE 13G/A	2025-11-14	2025-09-30	0	0%
TANG CAPITAL PARTNERS IV, INC	SCHEDULE 13G/A	2025-11-14	2025-09-30	0	0%
TANG CAPITAL PARTNERS III, INC	SCHEDULE 13G/A	2025-11-14	2025-09-30	0	0%
TANG CAPITAL MANAGEMENT, LLC	SCHEDULE 13G/A	2025-11-14	2025-09-30	0	0%
KEVIN TANG	SCHEDULE 13G/A	2025-11-14	2025-09-30	0	0%
FMR LLC	SCHEDULE 13G/A	2024-12-06	2024-11-29	1,798,875	3.4%
Abigail P. Johnson	SCHEDULE 13G/A	2024-12-06	2024-11-29	1,798,875	3.4%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.