AMBA · Ambarella Inc · Shareholders & Ownership

$67.96 +4.74 (+7.50%)

Russell 2000 member Rebalance outlook locked

Market Cap

$2.99B

44.14M

Volume · Oct 21 1.66M Avg daily vol (3M) 1.64M

Every disclosed holder of AMBA 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 AMBA

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)	342	35,888,134	81.30%	Yes
Insiders (Forms 3, 4, 5)	14	2,410,770	5.46%	Yes
13D/G-only blocks	0	0	0.00%	Yes
Remaining	—	5,842,067	13.24%	Rest
Registered funds (N-PORT, not summed)	99	9,300,571	21.07%	No

Shares outstanding: 44,140,971, 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 AMBA

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	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	3,944,592	8.94%	+155,377	Jun 30, 2026	carried, not yet filed for the newest quarter
1.1	iShares ESG Aware MSCI USA Small-Cap ETF Fund S000061604 · Registered fund · May 31, 2026 iShares Trust, not summed	17,401	0.04%	+4,878	May 31, 2026	iShares Trust, not summed
1.2	iShares MSCI World Small-Cap ETF Fund S000091430 · Registered fund · May 31, 2026 iShares Trust, not summed	2,822	0.01%	—	May 31, 2026	iShares Trust, not summed
2	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,688,405	8.36%	-28,458	Jun 30, 2026	carried, not yet filed for the newest quarter
3	PRICE T ROWE ASSOCIATES INC /MD/ 13F CIK 80255 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,598,976	5.89%	+1,646,661	Jun 30, 2026	carried, not yet filed for the newest quarter
3.1	PRICE T ROWE ASSOCIATES INC /MD/ 13G CIK 80255 · Registered investment adviser · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	2,598,863	5.89%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
4	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	2,562,733	5.81%	+586,269	Jun 30, 2026	carried, not yet filed for the newest quarter
4.1	STATE STREET CORP 13G CIK 93751 · Bank · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	2,562,733	5.81%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
5	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,873,539	4.24%	+58,936	Jun 30, 2026	carried, not yet filed for the newest quarter
5.1	VANGUARD CAPITAL MANAGEMENT LLC 13G CIK 2100119 · Registered investment adviser · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	2,198,918	4.98%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
6	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	1,321,260	2.99%	+36,903	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
7	MANUFACTURERS LIFE INSURANCE COMPANY, THE 13F CIK 928047 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,186,541	2.69%	-399,541	Jun 30, 2026	carried, not yet filed for the newest quarter
7.1	Small Cap Core Fund Fund S000043450 · Registered fund · Jul 31, 2026 John Hancock Investment Trust, not summed	474,228	1.07%	-132,224	Jul 31, 2026	John Hancock Investment Trust, not summed
8	Legal & General Group Plc 13F CIK 764068 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,116,729	2.53%	+190,333	Jun 30, 2026	carried, not yet filed for the newest quarter
9	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,098,120	2.49%	+68,891	Jun 30, 2026	carried, not yet filed for the newest quarter
10	VANGUARD INFORMATION TECHNOLOGY INDEX FUND Fund S000004452 · Registered fund · May 31, 2026 VANGUARD WORLD FUND, not summed	1,013,134	2.30%	+3,688	May 31, 2026	VANGUARD WORLD FUND, not summed
11	Kohn Leslie Insider CIK 1558645 · Sep 17, 2025 Director, Chief Technology Officer, issuer-wide	977,428	2.21%	-2,249	Sep 17, 2025	Director, Chief Technology Officer, issuer-wide
12	VANGUARD SMALL-CAP INDEX FUND Fund S000002845 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	956,766	2.17%	+12,417	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
13	VANGUARD EXPLORER FUND Fund S000002578 · Registered fund · Jul 31, 2026 VANGUARD EXPLORER FUND, not summed	785,344	1.78%	+287,036	Jul 31, 2026	VANGUARD EXPLORER FUND, not summed
14	Wang Feng-Ming Insider CIK 1558686 · Sep 17, 2026 Director, CEO, issuer-wide	767,759	1.74%	-5,848	Sep 17, 2026	Director, CEO, issuer-wide
15	MENORA MIVTACHIM HOLDINGS LTD. 13F CIK 1351917 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	757,571	1.72%	+757,571	Jun 30, 2026	carried, not yet filed for the newest quarter
16	Stephens Investment Management Group LLC 13F CIK 1314440 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	721,711	1.64%	+246,570	Jun 30, 2026	carried, not yet filed for the newest quarter
17	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	718,154	1.63%	+79,567	Jun 30, 2026	carried, not yet filed for the newest quarter
17.1	Dimensional U.S. Small Cap ETF Fund S000070906 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	139,536	0.32%	+651	Jul 31, 2026	Dimensional ETF Trust, not summed
17.2	Dimensional U.S. Core Equity 2 ETF Fund S000070903 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	72,268	0.16%	+3,288	Jul 31, 2026	Dimensional ETF Trust, not summed
17.3	Dimensional U.S. Equity Market ETF Fund S000070902 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	10,324	0.02%	-2,157	Jul 31, 2026	Dimensional ETF Trust, not summed
17.4	Dimensional US Core Equity Market ETF Fund S000069432 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	9,521	0.02%	+443	Jul 31, 2026	Dimensional ETF Trust, not summed
17.5	Dimensional US Core Equity 1 ETF Fund S000081780 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	4,094	0.01%	-687	Jul 31, 2026	Dimensional ETF Trust, not summed
18	Connor, Clark & Lunn Investment Management Ltd. 13F CIK 1596800 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	685,726	1.55%	+85,220	Jun 30, 2026	carried, not yet filed for the newest quarter
19	EXCHANGE TRADED CONCEPTS, LLC 13F CIK 1457320 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	630,697	1.43%	+59,117	Jun 30, 2026	carried, not yet filed for the newest quarter
19.1	ROBO Global Robotics and Automation Index ETF Fund S000042659 · Registered fund · Jul 31, 2026 EXCHANGE TRADED CONCEPTS TRUST, not summed	483,856	1.10%	+28,156	Jul 31, 2026	EXCHANGE TRADED CONCEPTS TRUST, not summed
19.2	ROBO Global Artificial Intelligence ETF Fund S000065729 · Registered fund · Jul 31, 2026 EXCHANGE TRADED CONCEPTS TRUST, not summed	141,180	0.32%	+25,850	Jul 31, 2026	EXCHANGE TRADED CONCEPTS TRUST, not summed
20	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	611,551	1.39%	-113,104	Jun 30, 2026	carried, not yet filed for the newest quarter
21	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 13F CIK 1705339 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	562,013	1.27%	+20,112	Jun 30, 2026	carried, not yet filed for the newest quarter
21.1	Global X Artificial Intelligence & Technology ETF Fund S000061326 · Registered fund · May 31, 2026 GLOBAL X FUNDS, not summed	369,594	0.84%	+14,720	May 31, 2026	GLOBAL X FUNDS, not summed
21.2	Global X Autonomous & Electric Vehicles ETF Fund S000061415 · Registered fund · May 31, 2026 GLOBAL X FUNDS, not summed	60,620	0.14%	+2,827	May 31, 2026	GLOBAL X FUNDS, not summed
21.3	Global X Internet of Things ETF Fund S000054692 · Registered fund · May 31, 2026 GLOBAL X FUNDS, not summed	33,594	0.08%	-2,352	May 31, 2026	GLOBAL X FUNDS, not summed
21.4	Global X Russell 2000 ETF Fund S000085029 · Registered fund · Jul 31, 2026 GLOBAL X FUNDS, not summed	20,400	0.05%	+2,505	Jul 31, 2026	GLOBAL X FUNDS, not summed
21.5	Global X AI Semiconductor & Quantum ETF Fund S000095265 · Registered fund · May 31, 2026 GLOBAL X FUNDS, not summed	2,037	0.00%	+1,728	May 31, 2026	GLOBAL X FUNDS, not summed
22	VANGUARD SMALL-CAP GROWTH INDEX FUND Fund S000002846 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	551,361	1.25%	+22,860	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
23	D. E. Shaw & Co., Inc. 13F CIK 1009207 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	515,084	1.17%	+269,919	Jun 30, 2026	carried, not yet filed for the newest quarter
24	T. Rowe Price Investment Management, Inc. 13F CIK 1897612 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	513,569	1.16%	+255,769	Jun 30, 2026	carried, not yet filed for the newest quarter
25	JACOBS LEVY EQUITY MANAGEMENT, INC 13F CIK 884414 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	504,409	1.14%	+139,980	Jun 30, 2026	carried, not yet filed for the newest quarter
26	AQR CAPITAL MANAGEMENT LLC 13F CIK 1167557 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	495,583	1.12%	-232	Jun 30, 2026	carried, not yet filed for the newest quarter
27	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	476,351	1.08%	+19,035	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
28	VANGUARD STRATEGIC EQUITY FUND Fund S000002593 · Registered fund · Jun 30, 2026 VANGUARD HORIZON FUNDS, not summed	440,956	1.00%	-82,917	Jun 30, 2026	VANGUARD HORIZON FUNDS, not summed
29	Nuveen, LLC 13F CIK 1871926 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	439,002	0.99%	-48,818	Jun 30, 2026	carried, not yet filed for the newest quarter
29.1	Nuveen Quant Small Cap Equity Fund Fund S000005386 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	133,810	0.30%	-37,520	Jul 31, 2026	TIAA-CREF Funds, not summed
29.2	College Retirement Equities Fund - Total Global Stock Account Fund S000005080 · Registered fund · Jun 30, 2026 College Retirement Equities Fund, not summed	62,900	0.14%	-58,147	Jun 30, 2026	College Retirement Equities Fund, not summed
29.3	Nuveen Small Cap Blend Index Fund Fund S000005367 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	54,355	0.12%	+6,726	Jul 31, 2026	TIAA-CREF Funds, not summed
29.4	Nuveen Equity Index Fund Fund S000005360 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	29,577	0.07%	0	Jul 31, 2026	TIAA-CREF Funds, not summed
29.5	Nuveen Small/Mid Cap Value Fund Fund S000014609 · Registered fund · Jun 30, 2026 Nuveen Investment Trust, not summed	16,833	0.04%	-6,564	Jun 30, 2026	Nuveen Investment Trust, not summed
30	PINNACLE ASSOCIATES LTD 13F CIK 743127 · Registered investment adviser · Sep 30, 2026	428,683	0.97%	+19,837	Sep 30, 2026
31	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	403,692	0.91%	+28,912	Jun 30, 2026	carried, not yet filed for the newest quarter
31.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	21,565	0.05%	+2,623	Jun 30, 2026	Northern Funds, not summed
31.2	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	4,014	0.01%	-114	Jun 30, 2026	Northern Funds, not summed
32	BNP PARIBAS ASSET MANAGEMENT Holding S.A. 13F CIK 1520354 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	394,182	0.89%	+9,386	Jun 30, 2026	carried, not yet filed for the newest quarter
33	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	379,551	0.86%	+16,260	Jun 30, 2026	carried, not yet filed for the newest quarter
34	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	379,423	0.86%	+169,606	Jun 30, 2026	carried, not yet filed for the newest quarter
35	BANK OF AMERICA CORP /DE/ 13F CIK 70858 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	361,932	0.82%	-119,826	Jun 30, 2026	carried, not yet filed for the newest quarter
36	Squarepoint Ops LLC 13F CIK 1642575 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	358,889	0.81%	-101,691	Jun 30, 2026	carried, not yet filed for the newest quarter
37	NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 13F CIK 921739 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	358,122	0.81%	+358,122	Jun 30, 2026	carried, not yet filed for the newest quarter
38	OBERWEIS ASSET MANAGEMENT INC/ 13F CIK 937886 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	342,254	0.78%	+47,069	Jun 30, 2026	carried, not yet filed for the newest quarter
38.1	Oberweis Micro-Cap Fund Fund S000010231 · Registered fund · Jun 30, 2026 OBERWEIS FUNDS, not summed	302,369	0.69%	+47,069	Jun 30, 2026	OBERWEIS FUNDS, not summed
38.2	Oberweis Global Opportunities Fund Fund S000010230 · Registered fund · Jun 30, 2026 OBERWEIS FUNDS, not summed	10,200	0.02%	0	Jun 30, 2026	OBERWEIS FUNDS, not summed
39	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	316,013	0.72%	+13,676	Jun 30, 2026	carried, not yet filed for the newest quarter
40	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	298,076	0.68%	+13,787	Jun 30, 2026	carried, not yet filed for the newest quarter
41	ALGERT GLOBAL LLC 13F CIK 1275218 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	297,624	0.67%	-111,596	Jun 30, 2026	carried, not yet filed for the newest quarter
42	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	212,428	0.48%	+10,599	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
43	RAYMOND JAMES FINANCIAL INC 13F CIK 720005 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	187,266	0.42%	+970	Jun 30, 2026	carried, not yet filed for the newest quarter
44	Ju Chi-Hong Insider CIK 1882831 · Sep 17, 2026 Senior VP, Systems & GM, Asia, issuer-wide	162,153	0.37%	-1,771	Sep 17, 2026	Senior VP, Systems & GM, Asia, issuer-wide
45	Robinhood Asset Management, LLC 13F CIK 2067588 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	159,123	0.36%	+159,123	Jun 30, 2026	carried, not yet filed for the newest quarter
46	Lee Chan W Insider CIK 1882825 · Sep 17, 2026 Chief Operations Officer, issuer-wide	154,443	0.35%	-2,655	Sep 17, 2026	Chief Operations Officer, issuer-wide
47	PANAGORA ASSET MANAGEMENT INC 13F CIK 883677 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	150,261	0.34%	+63,094	Jun 30, 2026	carried, not yet filed for the newest quarter
48	DEUTSCHE BANK AG\ 13F CIK 948046 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	150,163	0.34%	+54,703	Jun 30, 2026	carried, not yet filed for the newest quarter
49	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	143,071	0.32%	-170,975	Jun 30, 2026	carried, not yet filed for the newest quarter
50	Samjo Management, LLC 13F CIK 1986590 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	136,955	0.31%	+95,325	Jun 30, 2026	carried, not yet filed for the newest quarter

4 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 401 holders

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Key facts CIK 1280263 CUSIP G037AX101 13F (30d) 41 filings 41 filers Visit website Investor relations