Ambarella Ownership | Who Owns Ambarella?

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Ambarella Ownership Summary

Ambarella is owned by 85.41% institutional investors, 4.83% insiders, and 9.75% retail investors. Vanguard group is the largest institutional shareholder, holding 12.88% of AMBA shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 2.97% of its assets in Ambarella shares.

AMBA Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Ambarella	85.41%	4.83%	9.75%
Sector	Technology Stocks	36.93%	14.89%	48.18%
Idea	Semiconductor Stocks List	48.16%	6.95%	44.89%
Idea	Self Driving Car Stocks List	36.19%	7.47%	56.34%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	5.48M	12.88%	$388.22M
Blackrock funding, inc. /de	3.79M	8.87%	$195.05M
Blackrock	3.47M	8.52%	$187.38M
State street	1.98M	4.63%	$101.74M
Manufacturers life insurance company, the	1.59M	3.71%	$81.64M
Millennium management	1.51M	3.54%	$77.86M
Geode capital management	1.03M	2.41%	$52.99M
Price t rowe associates inc /md/	952.32K	2.23%	$49.02M
Citadel advisors	931.86K	2.18%	$47.97M
Legal & general group	926.40K	2.17%	$47.69M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Fifthdelta	546.54K	3.88%	$28.13M
Kodai capital management lp	778.55K	2.32%	$56.63M
Westerly capital management	130.00K	1.82%	$6.69M
Sws partners	91.44K	1.16%	$4.71M
Shannon river fund management	114.94K	1.13%	$5.92M
Freemont management	135.80K	1.06%	$6.99M
Samjo management	41.63K	0.93%	$2.14M
Essex investment management	82.39K	0.67%	$4.24M
Collar capital management	18.65K	0.62%	$959.91K
Nano cap new millennium growth fund l p	12.00K	0.58%	$617.70K

Top Buyers

Holder	Shares	% Assets	Change
Millennium management	1.51M	0.03%	1.34M
Fifthdelta	546.54K	3.88%	546.54K
Manufacturers life insurance company, the	1.59M	0.07%	524.94K
Citadel advisors	931.86K	0.01%	396.19K
Woodline partners lp	349.48K	0.07%	349.48K

Top Sellers

Holder	Shares	% Assets	Change
Jericho capital asset management	-	-	-1.59M
Macquarie group	-	-	-1.18M
Fuller & thaler asset management	-	-	-848.09K
Slate path capital lp	-	-	-814.40K
Barclays	15.67K	0.00%	-679.42K

New Positions

Holder	Shares	% Assets	Change	Value
Fifthdelta	546.54K	3.88%	546.54K	$28.13M
Woodline partners lp	349.48K	0.07%	349.48K	$17.99M
Axa investment managers	332.58K	0.07%	332.58K	$27.44M
Vanguard fiduciary trust	284.29K	0.00%	284.29K	$14.63M
Hawk ridge capital management lp	276.10K	0.52%	276.10K	$14.21M

Sold Out

Holder	Change
Stephens consulting	-1.00
Tortoise investment management	-2.00
Southstate	-3.00
Private wealth asset management	-4.00
Riggs asset managment	-5.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	313	-10.57%	36,474,494	-1.53%	85	1.13%	169	11.92%	85	-33.59%
Dec 31, 2025	106	-70.31%	8,856,314	-75.10%	20	0.30%	45	-76.56%	37	-63.73%
Sep 30, 2025	129	-59.31%	8,725,551	-73.23%	20	0.35%	65	-60.12%	38	-63.46%
Jun 30, 2025	322	2.22%	35,040,309	-0.42%	82	1.14%	163	-3.55%	106	10.42%
Mar 31, 2025	10	-96.91%	1,154,851	-96.58%	2	0.04%	2	-98.76%	2	-97.98%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	1.30M	2.97%	15.26K
Vanguard US Total Market Shares ETF	1.24M	2.95%	1.28K
Vanguard Information Technology ETF	996.56K	2.28%	5.26K
iShares Russell 2000 ETF	968.68K	2.21%	8.18K
Vanguard Small Cap Index	940.95K	2.15%	-3.59K
State Street® SPDR® S&P® Smcndctr ETF	856.59K	1.96%	-
SPDR® S&P Semiconductor ETF	647.44K	1.52%	-
L&G Artificial Intelligence ETF	615.67K	1.41%	-
FullerThaler Behavioral Small-Cap Growth	586.61K	1.36%	-200.03K
FullerThaler Behavioral Sm-Cp Gr R6	540.00K	1.25%	-182.50K

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 26, 2026	Young John Alexander	CFO	Sell	$38.40K
May 26, 2026	Wang Feng-Ming	CEO	Sell	$553.31K
May 26, 2026	Wang Feng-Ming	CEO	Sell	$842.25K
May 26, 2026	Wang Feng-Ming	CEO	Sell	$1.56M
Apr 21, 2026	Young John Alexander	CFO	Sell	$118.26K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	5
2026 Q1	-	14
2025 Q4	-	11
2025 Q3	-	6
2025 Q2	-	7

AMBA Ownership FAQ

Who owns the most shares of Ambarella?

Ambarella’s largest shareholders are Vanguard group (5.48M shares, 12.88%), Blackrock funding, inc. /de (3.79M shares, 8.87%), and Blackrock (3.47M shares, 8.52%). Together, they hold 30.27% of Ambarella’s total shares outstanding.

Does Blackrock own Ambarella?

Yes, BlackRock owns 8.52% of Ambarella, totaling 3.47M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 187.38M$. In the last quarter, BlackRock increased its holdings by 33.73K shares, a 0.98% change.

Who is Ambarella’s biggest shareholder by percentage of total assets invested?

Fifthdelta is Ambarella’s biggest shareholder by percentage of total assets invested, with 3.88% of its assets in 546.54K Ambarella shares, valued at 28.13M$.

Who is the top mutual fund holder of Ambarella shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Ambarella shares, with 2.97% of its total shares outstanding invested in 1.3M Ambarella shares.

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