AMBA US Equity

AMBARELLA INC

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Information Technology · Semiconductors & Related Devices · CIK 1280263 · FYE 0131

$69.19

+0.22 (+0.32%)

USD · as of 2026-07-29 · marketstack

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Institutional ownership· 13F filers holding AMBA · 2026-Q1 methodology → sources →

303 holders

% of shares outstanding held

83.3%

Shares held (13F)

36,521,551

Reporting holders

303

Top holders

largest 100 of 303 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	3,789,2153.8M	$195M	8.64%	—
2	VANGUARD PORTFOLIO MANAGEMENT LLC	3,716,8633.7M	$191M	8.47%	NEW†
3	STATE STREET CORP	1,976,4642.0M	$102M	4.51%	ADD 16%
4	VANGUARD CAPITAL MANAGEMENT LLC	1,814,6031.8M	$93M	4.14%	NEW†
5	MANUFACTURERS LIFE INSURANCE COMPANY, THE	1,586,0821.6M	$82M	3.62%	ADD 49%
6	MILLENNIUM MANAGEMENT LLC	1,512,5391.5M	$78M	3.45%	ADD 791%
7	GEODE CAPITAL MANAGEMENT, LLC	1,029,2291.0M	$53M	2.35%	—
8	PRICE T ROWE ASSOCIATES INC /MD/	952,315952,315	$49M	2.17%	ADD 10%
9	CITADEL ADVISORS LLC	931,862931,862	$48M	2.12%	ADD 74%
10	Legal & General Group Plc	926,396926,396	$48M	2.11%	ADD 51%
11	MORGAN STANLEY	724,655724,655	$37M	1.65%	TRIM -20%
12	DIMENSIONAL FUND ADVISORS LP	638,587638,587	$33M	1.46%	ADD 28%
13	Connor, Clark & Lunn Investment Management Ltd.	600,506600,506	$31M	1.37%	ADD 8%
14	EXCHANGE TRADED CONCEPTS, LLC	571,580571,580	$29M	1.30%	ADD 62%
15	FIFTHDELTA Ltd	546,538546,538	$28M	1.25%	NEW
16	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	541,901541,901	$28M	1.24%	ADD 24%
17	Point72 Asset Management, L.P.	521,211521,211	$27M	1.19%	TRIM -32%
18	AQR CAPITAL MANAGEMENT LLC	495,815495,815	$26M	1.13%	ADD 110%
19	Nuveen, LLC	487,820487,820	$25M	1.11%	ADD 2%
20	BANK OF AMERICA CORP /DE/	481,758481,758	$25M	1.10%	ADD 8%
21	Stephens Investment Management Group LLC	475,141475,141	$24M	1.08%	—
22	Squarepoint Ops LLC	460,580460,580	$24M	1.05%	TRIM -42%
23	JPMORGAN CHASE & CO	473,762473,762	$23M	1.08%	ADD 77%
24	PINNACLE ASSOCIATES LTD	430,249430,249	$22M	0.98%	ADD 20%
25	ALGERT GLOBAL LLC	409,220409,220	$21M	0.93%	ADD 97%
26	Handelsbanken Fonder AB	396,690396,690	$20M	0.90%	ADD 27%
27	BNP PARIBAS ASSET MANAGEMENT Holding S.A.	384,796384,796	$20M	0.88%	ADD 24%
28	NORTHERN TRUST CORP	374,780374,780	$19M	0.85%	ADD 3%
29	JACOBS LEVY EQUITY MANAGEMENT, INC	364,429364,429	$19M	0.83%	ADD 14%
30	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	363,291363,291	$19M	0.83%	—
31	Woodline Partners LP	349,479349,479	$18M	0.80%	NEW
32	UBS Group AG	314,046314,046	$16M	0.72%	TRIM -51%
33	FMR LLC	302,337302,337	$16M	0.69%	ADD 7%
34	OBERWEIS ASSET MANAGEMENT INC/	295,185295,185	$15M	0.67%	TRIM -52%
35	Balyasny Asset Management L.P.	289,849289,849	$15M	0.66%	TRIM -19%
36	VANGUARD FIDUCIARY TRUST CO	284,289284,289	$15M	0.65%	NEW
37	HAWK RIDGE CAPITAL MANAGEMENT LP	276,100276,100	$14M	0.63%	NEW
38	T. Rowe Price Investment Management, Inc.	257,800257,800	$13M	0.59%	NEW
39	MARSHALL WACE, LLP	249,542249,542	$13M	0.57%	TRIM -22%
40	D. E. Shaw & Co., Inc.	245,165245,165	$13M	0.56%	NEW
41	Walleye Capital LLC	210,934210,934	$11M	0.48%	ADD 2202%
42	GOLDMAN SACHS GROUP INC	209,817209,817	$11M	0.48%	—
43	RENAISSANCE TECHNOLOGIES LLC	199,400199,400	$10M	0.45%	NEW
44	RAYMOND JAMES FINANCIAL INC	186,296186,296	$9M	0.42%	—
45	SUSQUEHANNA INTERNATIONAL GROUP, LLP	153,741153,741	$8M	0.35%	TRIM -31%
46	Freemont Management S.A.	135,800135,800	$7M	0.31%	ADD 252%
47	FIRST TRUST ADVISORS LP	132,938132,938	$7M	0.30%	TRIM -9%
48	WESTERLY CAPITAL MANAGEMENT, LLC	130,000130,000	$7M	0.30%	ADD 53%
49	MAIRS & POWER INC	117,581117,581	$6M	0.27%	NEW
50	Shannon River Fund Management LLC	114,940114,940	$6M	0.26%	TRIM -62%
51	Bank of New York Mellon Corp	112,192112,192	$6M	0.26%	TRIM -4%
52	Portolan Capital Management, LLC	108,749108,749	$6M	0.25%	ADD 100%
53	Hillsdale Investment Management Inc.	107,000107,000	$6M	0.24%	ADD 2%
54	Robeco Schweiz AG	104,154104,154	$5M	0.24%	TRIM -36%
55	DEUTSCHE BANK AG\	95,46095,460	$5M	0.22%	TRIM -3%
56	Engineers Gate Manager LP	93,94393,943	$5M	0.21%	TRIM -25%
57	Allianz Asset Management GmbH	92,60092,600	$5M	0.21%	NEW
58	SWS Partners	91,43791,437	$5M	0.21%	ADD 3%
59	SEI INVESTMENTS CO	89,13989,139	$5M	0.20%	ADD 38%
60	ArrowMark Colorado Holdings LLC	89,00089,000	$5M	0.20%	ADD 62%
61	Russell Investments Group, Ltd.	88,32088,320	$5M	0.20%	ADD 25%
62	Invesco Ltd.	87,80487,804	$5M	0.20%	ADD 7%
63	PANAGORA ASSET MANAGEMENT INC	87,16787,167	$4M	0.20%	NEW
64	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	83,10483,104	$4M	0.19%	ADD 3%
65	ESSEX INVESTMENT MANAGEMENT CO LLC	82,38782,387	$4M	0.19%	—
66	Mitsubishi UFJ Asset Management Co., Ltd.	81,90981,909	$4M	0.19%	—
67	Swiss National Bank	80,83380,833	$4M	0.18%	—
68	FRANKLIN RESOURCES INC	77,41377,413	$4M	0.18%	ADD 41%
69	LORD, ABBETT & CO. LLC	76,64676,646	$4M	0.17%	TRIM -4%
70	ALLIANCEBERNSTEIN L.P.	44,25844,258	$3M	0.10%	TRIM -63%
71	SORA INVESTORS LLC	59,09259,092	$3M	0.13%	TRIM -64%
72	DNB Asset Management AS	57,68957,689	$3M	0.13%	ADD 22%
73	RHUMBLINE ADVISERS	56,65456,654	$3M	0.13%	—
74	ACADIAN ASSET MANAGEMENT LLC	54,20054,200	$3M	0.12%	TRIM -55%
75	SG Americas Securities, LLC	51,36751,367	$3M	0.12%	TRIM -7%
76	Trexquant Investment LP	49,29449,294	$3M	0.11%	TRIM -66%
77	WELLS FARGO & COMPANY/MN	48,43348,433	$2M	0.11%	TRIM -47%
78	Pacer Advisors, Inc.	38,07638,076	$2M	0.09%	ADD 469%
79	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	47,91847,918	$2M	0.11%	ADD 24%
80	Granite Investment Partners, LLC	44,24044,240	$2M	0.10%	ADD 59%
81	Y-Intercept (Hong Kong) Ltd	43,06843,068	$2M	0.10%	—
82	Susquehanna Portfolio Strategies, LLC	42,20242,202	$2M	0.10%	TRIM -14%
83	Samjo Management, LLC	41,63041,630	$2M	0.09%	NEW
84	AMERIPRISE FINANCIAL INC	40,62240,622	$2M	0.09%	TRIM -32%
85	VANGUARD ASSET MANAGEMENT, Ltd	36,10036,100	$2M	0.08%	NEW
86	Holocene Advisors, LP	35,46035,460	$2M	0.08%	NEW
87	Creative Planning	34,52434,524	$2M	0.08%	ADD 34%
88	OCCUDO QUANTITATIVE STRATEGIES LP	25,21025,210	$2M	0.06%	ADD 442%
89	IEQ CAPITAL, LLC	32,40832,408	$2M	0.07%	ADD 186%
90	Brevan Howard Capital Management LP	30,75930,759	$2M	0.07%	NEW
91	CITIGROUP INC	30,32430,324	$2M	0.07%	—
92	Man Group plc	28,98428,984	$1M	0.07%	ADD 17%
93	VAN ECK ASSOCIATES CORP	28,68228,682	$1M	0.07%	TRIM -19%
94	STIFEL FINANCIAL CORP	27,25327,253	$1M	0.06%	ADD 172%
95	HARBOR CAPITAL ADVISORS, INC.	26,98926,989	$1M	0.06%	NEW
96	IMC-Chicago, LLC	25,60825,608	$1M	0.06%	TRIM -42%
97	Quantbot Technologies LP	25,22525,225	$1M	0.06%	ADD 6%
98	DARK FOREST CAPITAL MANAGEMENT LP	23,07323,073	$1M	0.05%	NEW
99	MetLife Investment Management, LLC	22,91222,912	$1M	0.05%	—
100	KBC Group NV	21,79521,795	$1M	0.05%	—

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

BlackRock, Inc.

3.8M

3.9M

3.8M

$195M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

3.7M

$191M

STATE STREET CORP

1.6M

1.7M

1.9M

1.7M

2.0M

$102M

VANGUARD CAPITAL MANAGEMENT LLC

—

1.8M

$93M

MANUFACTURERS LIFE INSURANCE COMPANY, THE

1.5M

1.3M

1.4M

853K

1.1M

1.6M

$82M

MILLENNIUM MANAGEMENT LLC

1.4M

910K

64K

119K

170K

1.5M

$78M

GEODE CAPITAL MANAGEMENT, LLC

915K

948K

976K

985K

1.0M

$53M

PRICE T ROWE ASSOCIATES INC /MD/

25K

29K

33K

36K

865K

952K

$49M

CITADEL ADVISORS LLC

849K

711K

946K

455K

536K

932K

$48M

Legal & General Group Plc

453K

581K

634K

519K

614K

926K

$48M

MORGAN STANLEY

843K

762K

792K

959K

911K

725K

$37M

DIMENSIONAL FUND ADVISORS LP

623K

544K

516K

512K

499K

639K

$33M

Connor, Clark & Lunn Investment Management Ltd.

305K

358K

481K

567K

557K

601K

$31M

EXCHANGE TRADED CONCEPTS, LLC

284K

382K

371K

271K

353K

572K

$29M

FIFTHDELTA Ltd

—

547K

$28M

Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	303	36,521,551	83.3%	$1.9B
2025-Q4

Short interest has its own tab now — open SI →

Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.

Activists & large holders· Schedule 13D/G beneficial owners · AMBA

Large holders — 13G, passive (top 3 by % of class)

Holder	% of class	Type	As of
VANGUARD PORTFOLIO MANAGEMENT LLC	8.57%	QII	2026-03-31	SEC →
BlackRock, Inc.	7.3%	QII	2025-03-31	SEC →
VANGUARD GROUP INC	0%	QII	2026-03-13	SEC →

Source: SEC Schedule 13D/13G structured XML. 13D = active intent; 13G filers report passively (Rule 13d-1(b) QII / 13d-1(c) Passive / 13d-1(d) Exempt) and are not activists. Percent and delta are the group aggregate the filing reports. Structured 13D/G coverage begins December 2024 (SEC XML mandate).

Institutional ownership· 13F filers holding AMBA · 2026-Q1 methodology → sources →

303 holders

% of shares outstanding held

83.3%

Shares held (13F)

36,521,551

Reporting holders

303

Top holders

largest 100 of 303 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	BlackRock, Inc.	3,789,2153.8M	$195M	8.64%	—
2	VANGUARD PORTFOLIO MANAGEMENT LLC	3,716,8633.7M	$191M	8.47%	NEW†
3	STATE STREET CORP	1,976,4642.0M	$102M	4.51%	ADD 16%
4	VANGUARD CAPITAL MANAGEMENT LLC	1,814,6031.8M	$93M	4.14%	NEW†
5	MANUFACTURERS LIFE INSURANCE COMPANY, THE	1,586,0821.6M	$82M	3.62%	ADD 49%
6	MILLENNIUM MANAGEMENT LLC	1,512,5391.5M	$78M	3.45%	ADD 791%
7	GEODE CAPITAL MANAGEMENT, LLC	1,029,2291.0M	$53M	2.35%	—
8	PRICE T ROWE ASSOCIATES INC /MD/	952,315952,315	$49M	2.17%	ADD 10%
9	CITADEL ADVISORS LLC	931,862931,862	$48M	2.12%	ADD 74%
10	Legal & General Group Plc	926,396926,396	$48M	2.11%	ADD 51%
11	MORGAN STANLEY	724,655724,655	$37M	1.65%	TRIM -20%
12	DIMENSIONAL FUND ADVISORS LP	638,587638,587	$33M	1.46%	ADD 28%
13	Connor, Clark & Lunn Investment Management Ltd.	600,506600,506	$31M	1.37%	ADD 8%
14	EXCHANGE TRADED CONCEPTS, LLC	571,580571,580	$29M	1.30%	ADD 62%
15	FIFTHDELTA Ltd	546,538546,538	$28M	1.25%	NEW
16	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	541,901541,901	$28M	1.24%	ADD 24%
17	Point72 Asset Management, L.P.	521,211521,211	$27M	1.19%	TRIM -32%
18	AQR CAPITAL MANAGEMENT LLC	495,815495,815	$26M	1.13%	ADD 110%
19	Nuveen, LLC	487,820487,820	$25M	1.11%	ADD 2%
20	BANK OF AMERICA CORP /DE/	481,758481,758	$25M	1.10%	ADD 8%
21	Stephens Investment Management Group LLC	475,141475,141	$24M	1.08%	—
22	Squarepoint Ops LLC	460,580460,580	$24M	1.05%	TRIM -42%
23	JPMORGAN CHASE & CO	473,762473,762	$23M	1.08%	ADD 77%
24	PINNACLE ASSOCIATES LTD	430,249430,249	$22M	0.98%	ADD 20%
25	ALGERT GLOBAL LLC	409,220409,220	$21M	0.93%	ADD 97%
26	Handelsbanken Fonder AB	396,690396,690	$20M	0.90%	ADD 27%
27	BNP PARIBAS ASSET MANAGEMENT Holding S.A.	384,796384,796	$20M	0.88%	ADD 24%
28	NORTHERN TRUST CORP	374,780374,780	$19M	0.85%	ADD 3%
29	JACOBS LEVY EQUITY MANAGEMENT, INC	364,429364,429	$19M	0.83%	ADD 14%
30	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	363,291363,291	$19M	0.83%	—
31	Woodline Partners LP	349,479349,479	$18M	0.80%	NEW
32	UBS Group AG	314,046314,046	$16M	0.72%	TRIM -51%
33	FMR LLC	302,337302,337	$16M	0.69%	ADD 7%
34	OBERWEIS ASSET MANAGEMENT INC/	295,185295,185	$15M	0.67%	TRIM -52%
35	Balyasny Asset Management L.P.	289,849289,849	$15M	0.66%	TRIM -19%
36	VANGUARD FIDUCIARY TRUST CO	284,289284,289	$15M	0.65%	NEW
37	HAWK RIDGE CAPITAL MANAGEMENT LP	276,100276,100	$14M	0.63%	NEW
38	T. Rowe Price Investment Management, Inc.	257,800257,800	$13M	0.59%	NEW
39	MARSHALL WACE, LLP	249,542249,542	$13M	0.57%	TRIM -22%
40	D. E. Shaw & Co., Inc.	245,165245,165	$13M	0.56%	NEW
41	Walleye Capital LLC	210,934210,934	$11M	0.48%	ADD 2202%
42	GOLDMAN SACHS GROUP INC	209,817209,817	$11M	0.48%	—
43	RENAISSANCE TECHNOLOGIES LLC	199,400199,400	$10M	0.45%	NEW
44	RAYMOND JAMES FINANCIAL INC	186,296186,296	$9M	0.42%	—
45	SUSQUEHANNA INTERNATIONAL GROUP, LLP	153,741153,741	$8M	0.35%	TRIM -31%
46	Freemont Management S.A.	135,800135,800	$7M	0.31%	ADD 252%
47	FIRST TRUST ADVISORS LP	132,938132,938	$7M	0.30%	TRIM -9%
48	WESTERLY CAPITAL MANAGEMENT, LLC	130,000130,000	$7M	0.30%	ADD 53%
49	MAIRS & POWER INC	117,581117,581	$6M	0.27%	NEW
50	Shannon River Fund Management LLC	114,940114,940	$6M	0.26%	TRIM -62%
51	Bank of New York Mellon Corp	112,192112,192	$6M	0.26%	TRIM -4%
52	Portolan Capital Management, LLC	108,749108,749	$6M	0.25%	ADD 100%
53	Hillsdale Investment Management Inc.	107,000107,000	$6M	0.24%	ADD 2%
54	Robeco Schweiz AG	104,154104,154	$5M	0.24%	TRIM -36%
55	DEUTSCHE BANK AG\	95,46095,460	$5M	0.22%	TRIM -3%
56	Engineers Gate Manager LP	93,94393,943	$5M	0.21%	TRIM -25%
57	Allianz Asset Management GmbH	92,60092,600	$5M	0.21%	NEW
58	SWS Partners	91,43791,437	$5M	0.21%	ADD 3%
59	SEI INVESTMENTS CO	89,13989,139	$5M	0.20%	ADD 38%
60	ArrowMark Colorado Holdings LLC	89,00089,000	$5M	0.20%	ADD 62%
61	Russell Investments Group, Ltd.	88,32088,320	$5M	0.20%	ADD 25%
62	Invesco Ltd.	87,80487,804	$5M	0.20%	ADD 7%
63	PANAGORA ASSET MANAGEMENT INC	87,16787,167	$4M	0.20%	NEW
64	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	83,10483,104	$4M	0.19%	ADD 3%
65	ESSEX INVESTMENT MANAGEMENT CO LLC	82,38782,387	$4M	0.19%	—
66	Mitsubishi UFJ Asset Management Co., Ltd.	81,90981,909	$4M	0.19%	—
67	Swiss National Bank	80,83380,833	$4M	0.18%	—
68	FRANKLIN RESOURCES INC	77,41377,413	$4M	0.18%	ADD 41%
69	LORD, ABBETT & CO. LLC	76,64676,646	$4M	0.17%	TRIM -4%
70	ALLIANCEBERNSTEIN L.P.	44,25844,258	$3M	0.10%	TRIM -63%
71	SORA INVESTORS LLC	59,09259,092	$3M	0.13%	TRIM -64%
72	DNB Asset Management AS	57,68957,689	$3M	0.13%	ADD 22%
73	RHUMBLINE ADVISERS	56,65456,654	$3M	0.13%	—
74	ACADIAN ASSET MANAGEMENT LLC	54,20054,200	$3M	0.12%	TRIM -55%
75	SG Americas Securities, LLC	51,36751,367	$3M	0.12%	TRIM -7%
76	Trexquant Investment LP	49,29449,294	$3M	0.11%	TRIM -66%
77	WELLS FARGO & COMPANY/MN	48,43348,433	$2M	0.11%	TRIM -47%
78	Pacer Advisors, Inc.	38,07638,076	$2M	0.09%	ADD 469%
79	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	47,91847,918	$2M	0.11%	ADD 24%
80	Granite Investment Partners, LLC	44,24044,240	$2M	0.10%	ADD 59%
81	Y-Intercept (Hong Kong) Ltd	43,06843,068	$2M	0.10%	—
82	Susquehanna Portfolio Strategies, LLC	42,20242,202	$2M	0.10%	TRIM -14%
83	Samjo Management, LLC	41,63041,630	$2M	0.09%	NEW
84	AMERIPRISE FINANCIAL INC	40,62240,622	$2M	0.09%	TRIM -32%
85	VANGUARD ASSET MANAGEMENT, Ltd	36,10036,100	$2M	0.08%	NEW
86	Holocene Advisors, LP	35,46035,460	$2M	0.08%	NEW
87	Creative Planning	34,52434,524	$2M	0.08%	ADD 34%
88	OCCUDO QUANTITATIVE STRATEGIES LP	25,21025,210	$2M	0.06%	ADD 442%
89	IEQ CAPITAL, LLC	32,40832,408	$2M	0.07%	ADD 186%
90	Brevan Howard Capital Management LP	30,75930,759	$2M	0.07%	NEW
91	CITIGROUP INC	30,32430,324	$2M	0.07%	—
92	Man Group plc	28,98428,984	$1M	0.07%	ADD 17%
93	VAN ECK ASSOCIATES CORP	28,68228,682	$1M	0.07%	TRIM -19%
94	STIFEL FINANCIAL CORP	27,25327,253	$1M	0.06%	ADD 172%
95	HARBOR CAPITAL ADVISORS, INC.	26,98926,989	$1M	0.06%	NEW
96	IMC-Chicago, LLC	25,60825,608	$1M	0.06%	TRIM -42%
97	Quantbot Technologies LP	25,22525,225	$1M	0.06%	ADD 6%
98	DARK FOREST CAPITAL MANAGEMENT LP	23,07323,073	$1M	0.05%	NEW
99	MetLife Investment Management, LLC	22,91222,912	$1M	0.05%	—
100	KBC Group NV	21,79521,795	$1M	0.05%	—

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

BlackRock, Inc.

3.8M

3.9M

3.8M

$195M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

3.7M

$191M

STATE STREET CORP

1.6M

1.7M

1.9M

1.7M

2.0M

$102M

VANGUARD CAPITAL MANAGEMENT LLC

—

1.8M

$93M

MANUFACTURERS LIFE INSURANCE COMPANY, THE

1.5M

1.3M

1.4M

853K

1.1M

1.6M

$82M

MILLENNIUM MANAGEMENT LLC

1.4M

910K

64K

119K

170K

1.5M

$78M

GEODE CAPITAL MANAGEMENT, LLC

915K

948K

976K

985K

1.0M

$53M

PRICE T ROWE ASSOCIATES INC /MD/

25K

29K

33K

36K

865K

952K

$49M

CITADEL ADVISORS LLC

849K

711K

946K

455K

536K

932K

$48M

Legal & General Group Plc

453K

581K

634K

519K

614K

926K

$48M

MORGAN STANLEY

843K

762K

792K

959K

911K

725K

$37M

DIMENSIONAL FUND ADVISORS LP

623K

544K

516K

512K

499K

639K

$33M

Connor, Clark & Lunn Investment Management Ltd.

305K

358K

481K

567K

557K

601K

$31M

EXCHANGE TRADED CONCEPTS, LLC

284K

382K

371K

271K

353K

572K

$29M

FIFTHDELTA Ltd

—

547K

$28M

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	303	36,521,551	83.3%	$1.9B
2025-Q4

Short interest has its own tab now — open SI →

Activists & large holders· Schedule 13D/G beneficial owners · AMBA

Large holders — 13G, passive (top 3 by % of class)

Holder	% of class	Type	As of
VANGUARD PORTFOLIO MANAGEMENT LLC	8.57%	QII	2026-03-31	SEC →
BlackRock, Inc.	7.3%	QII	2025-03-31	SEC →
VANGUARD GROUP INC	0%	QII	2026-03-13	SEC →

AMBA US Equity☆

Institutional ownership· 13F filers holding AMBA · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Activists & large holders· Schedule 13D/G beneficial owners · AMBA

Institutional ownership· 13F filers holding AMBA · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Activists & large holders· Schedule 13D/G beneficial owners · AMBA

AMBA US Equity