BZAI · Blaize Holdings, Inc. · Shareholders & Ownership

$0.24 0.00 (-0.29%) At close · Oct 21

Russell 2000 member Rebalance outlook locked

Market Cap

$34.76M

144.83M

Volume · Oct 21 1.6M Avg daily vol (3M) 4.55M

Every disclosed holder of BZAI 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.

How the holder list picks a filing →

Who Owns BZAI

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	126	44,536,354	30.75%	Yes
Insiders (Forms 3, 4, 5)	0	0	0.00%	No
13D/G-only blocks	7	61,204,174	42.26%	Yes
Remaining	—	39,091,511	26.99%	Rest
Registered funds (N-PORT, not summed)	80	13,863,937	9.57%	No

Shares outstanding: 144,832,039, the issuer's latest cover-page count restated onto today's split basis.

Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.

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 BZAI

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	Bess Ventures & Advisory, LLC 13D CIK 2068418 · Unknown · Sep 16, 2026 Item 4 purpose: Passive investment	12,446,783	8.59%	-2,000,000	Sep 16, 2026
1.1	Bess Ventures & Advisory, LLC Insider CIK 2068418 · May 8, 2026 10% Owner, issuer-wide, not summed	13,653,976	9.43%	+2,000,000	May 8, 2026	10% Owner, issuer-wide, not summed
2	Polar Asset Management Partners Inc. 13G CIK 1326389 · Registered investment adviser · Jun 30, 2026 Rule 13d-1(b), qualified institution	9,375,000	6.47%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution
3	Dinakar Munagala 13D CIK 2048309 · Unknown · Aug 2, 2026 Item 4 purpose: not restated by this amendment, the earlier 13D's purpose stands	9,259,316	6.39%	+1,213,423	Aug 2, 2026
3.1	Munagala Dinakar Insider CIK 2048309 · Apr 17, 2026 Director, Chief Executive Officer, issuer-wide, not summed	501,422	0.35%	-3,845,274	Apr 17, 2026	Director, Chief Executive Officer, issuer-wide, not summed
4	BurTech LP LLC 13D CIK 1878670 · Unknown · May 13, 2025	9,135,750	6.31%	—	May 13, 2025
5	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	7,387,308	5.10%	+1,742,482	Jun 30, 2026	carried, not yet filed for the newest quarter
5.1	BlackRock, Inc. 13G CIK 2012383 · Holding company · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	7,237,904	5.00%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
5.2	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	2,514,336	1.74%	+241,567	Jun 30, 2026	iShares Trust, not summed
5.3	iShares Russell 2000 Growth ETF Fund S000004343 · Registered fund · Jun 30, 2026 iShares Trust, not summed	807,950	0.56%	+300,925	Jun 30, 2026	iShares Trust, not summed
5.4	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	289,739	0.20%	+69,547	Jun 30, 2026	iShares Trust, not summed
5.5	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	122,911	0.08%	0	Jun 30, 2026	Quantitative Master Series LLC, not summed
6	Ava Investors S.A. 13G CIK 2048130 · Unknown · Jun 30, 2026 Rule 13d-1(c), passive investor	6,973,432	4.81%	-4,763,822	Jun 30, 2026	Rule 13d-1(c), passive investor
6.1	Ava Investors SA Insider CIK 2048130 · Mar 31, 2026 10% Owner, issuer-wide, not summed	11,737,254	8.10%	-5,979,638	Mar 31, 2026	10% Owner, issuer-wide, not summed
7	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,654,065	3.21%	+1,069,738	Jun 30, 2026	carried, not yet filed for the newest quarter
8	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	3,611,806	2.49%	+774,500	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
9	SUHAIL RIZVI 13G CIK 1226358 · Unknown · Jan 13, 2025 Rule 13d-1(c), passive investor	2,991,908	2.07%	—	Jan 13, 2025	Rule 13d-1(c), passive investor
10	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,136,932	1.48%	+362,338	Jun 30, 2026	carried, not yet filed for the newest quarter
11	LAZARD ASSET MANAGEMENT LLC 13F CIK 1207017 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,986,835	1.37%	+782,631	Jun 30, 2026	carried, not yet filed for the newest quarter
12	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	1,807,978	1.25%	+265,504	Jun 30, 2026	carried, not yet filed for the newest quarter
13	MARSHALL WACE, LLP 13F CIK 1318757 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,607,810	1.11%	+1,607,810	Jun 30, 2026	carried, not yet filed for the newest quarter
14	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	1,572,428	1.09%	+192,920	Jun 30, 2026	carried, not yet filed for the newest quarter
14.1	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	34,300	0.02%	-600	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
14.2	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	2,526	0.00%	0	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
15	AQR CAPITAL MANAGEMENT LLC 13F CIK 1167557 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,501,041	1.04%	+289,598	Jun 30, 2026	carried, not yet filed for the newest quarter
16	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,247,768	0.86%	+1,170,785	Jun 30, 2026	carried, not yet filed for the newest quarter
17	D. E. Shaw & Co., Inc. 13F CIK 1009207 · Unknown · Jun 30, 2026 Classes BZAI, BZAIW, carried, not yet filed for the newest quarter	1,179,863	0.81%	+279,863	Jun 30, 2026	Classes BZAI, BZAIW, carried, not yet filed for the newest quarter
18	Calamos Advisors LLC 13F CIK 1316507 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,000,000	0.69%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
19	Nuveen, LLC 13F CIK 1871926 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	954,564	0.66%	+838,859	Jun 30, 2026	carried, not yet filed for the newest quarter
19.1	College Retirement Equities Fund - Total Global Stock Account Fund S000005080 · Registered fund · Jun 30, 2026 College Retirement Equities Fund, not summed	815,210	0.56%	—	Jun 30, 2026	College Retirement Equities Fund, not summed
19.2	Nuveen Small Cap Blend Index Fund Fund S000005367 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	116,111	0.08%	+23,649	Jul 31, 2026	TIAA-CREF Funds, not summed
20	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	940,787	0.65%	+28,011	Jun 30, 2026	carried, not yet filed for the newest quarter
21	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	911,602	0.63%	+241,295	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
22	Caption Management, LLC 13F CIK 1706766 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	898,556	0.62%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
23	Saba Capital Management, L.P. 13F CIK 1510281 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	874,225	0.60%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
24	Temasek Holdings (Private) Ltd 13F CIK 1021944 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	857,215	0.59%	-1,737,049	Jun 30, 2026	carried, not yet filed for the newest quarter
25	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	817,912	0.56%	+817,912	Jun 30, 2026	carried, not yet filed for the newest quarter
26	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	773,375	0.53%	+115,711	Jun 30, 2026	carried, not yet filed for the newest quarter
26.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	33,975	0.02%	+5,145	Jun 30, 2026	Northern Funds, not summed
26.2	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	32,596	0.02%	-1,488	Jun 30, 2026	Northern Funds, not summed
27	Themes Generative Artificial Intelligence ETF Fund S000081040 · Registered fund · Jun 30, 2026 Themes ETF Trust, not summed	762,160	0.53%	-78,840	Jun 30, 2026	Themes ETF Trust, not summed
28	Themes Management Co LLC 13F CIK 2107564 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	762,160	0.53%	-78,840	Jun 30, 2026	carried, not yet filed for the newest quarter
29	LMR Partners LLP 13F CIK 1578621 · Exempt reporting adviser · Jun 30, 2026 Classes BZAI, BZAIW, carried, not yet filed for the newest quarter	761,458	0.53%	+146,458	Jun 30, 2026	Classes BZAI, BZAIW, carried, not yet filed for the newest quarter
30	MMCAP International Inc. SPC 13F CIK 1304857 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	750,000	0.52%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
31	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	720,616	0.50%	+135,170	Jun 30, 2026	carried, not yet filed for the newest quarter
31.1	Schwab U.S. Small-Cap ETF Fund S000026636 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	263,300	0.18%	+26,102	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
31.2	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	192,236	0.13%	+54	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
31.3	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	124,540	0.09%	0	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
31.4	Schwab U.S. Broad Market ETF Fund S000026631 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	33,568	0.02%	+479	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
32	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	590,901	0.41%	+76,269	Jun 30, 2026	carried, not yet filed for the newest quarter
33	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	581,271	0.40%	+170,739	Jun 30, 2026	carried, not yet filed for the newest quarter
34	AlphaCore Capital LLC 13F CIK 1713662 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	570,358	0.39%	+130,010	Jun 30, 2026	carried, not yet filed for the newest quarter
35	ARISTEIA CAPITAL, L.L.C. 13F CIK 1080171 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	559,887	0.39%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
36	XTX Topco Ltd 13F CIK 1828301 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	474,830	0.33%	+451,888	Jun 30, 2026	carried, not yet filed for the newest quarter
37	CANTOR FITZGERALD, L. P. 13F CIK 1024896 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	459,692	0.32%	-309,539	Jun 30, 2026	carried, not yet filed for the newest quarter
38	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	448,517	0.31%	+65,060	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
39	EFG International AG 13F CIK 2109868 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	430,646	0.30%	+430,646	Jun 30, 2026	carried, not yet filed for the newest quarter
40	Bess Lane Insider CIK 1733859 · Jul 7, 2026 Director, issuer-wide, not summed	389,968	0.27%	—	Jul 7, 2026	Director, issuer-wide, not summed
40.1	Lane Bess 13D CIK 1733859 · Unknown · May 13, 2025	11,021,985	7.61%	+1,500,000	May 13, 2025
41	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 Classes BZAI, BZAIW, carried, not yet filed for the newest quarter	382,689	0.26%	+100,516	Jun 30, 2026	Classes BZAI, BZAIW, carried, not yet filed for the newest quarter
41.1	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Jun 30, 2026 GOLDMAN SACHS TRUST, not summed	63,067	0.04%	+55,057	Jun 30, 2026	GOLDMAN SACHS TRUST, not summed
42	Frank Edward H. Insider CIK 1589827 · Dec 3, 2025 Director, issuer-wide, not summed	378,757	0.26%	+75,258	Dec 3, 2025	Director, issuer-wide, not summed
43	Hambrecht Juergen Insider CIK 1634906 · Dec 3, 2025 Director, issuer-wide, not summed	378,757	0.26%	+75,258	Dec 3, 2025	Director, issuer-wide, not summed
44	Hudson Bay Capital Management LP 13F CIK 1393825 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	353,877	0.24%	-101,911	Jun 30, 2026	carried, not yet filed for the newest quarter
45	WOLVERINE ASSET MANAGEMENT LLC 13F CIK 1279891 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	349,730	0.24%	-55,646	Jun 30, 2026	carried, not yet filed for the newest quarter
46	Sehmi Harminder Insider CIK 2048383 · Jul 1, 2026 Chief Financial Officer, issuer-wide, not summed	259,773	0.18%	-40,609	Jul 1, 2026	Chief Financial Officer, issuer-wide, not summed
47	SUSQUEHANNA INTERNATIONAL GROUP, LLP 13F CIK 1446194 · Unknown · Jun 30, 2026 Classes BZAI, BZAIW, carried, not yet filed for the newest quarter	257,158	0.18%	-54,220	Jun 30, 2026	Classes BZAI, BZAIW, carried, not yet filed for the newest quarter
48	IEQ CAPITAL, LLC 13F CIK 1779789 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	237,901	0.16%	+92,306	Jun 30, 2026	carried, not yet filed for the newest quarter
49	WHITEBOX ADVISORS LLC 13F CIK 1257391 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	209,250	0.14%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
50	X-Square Capital, LLC 13F CIK 1729300 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	200,000	0.14%	0	Jun 30, 2026	carried, not yet filed for the newest quarter

2 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 183 holders

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Key facts CIK 1871638 CUSIP 092915107 13F (30d) 7 filings 7 filers Visit website Investor relations