Ambarella Ownership | Who Owns Ambarella?

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Ambarella Ownership Summary

Ambarella is owned by 20.82% institutional investors, 4.76% insiders, and 74.43% 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 2.96% of its assets in Ambarella shares.

AMBA Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Ambarella	20.82%	4.76%	74.43%
Sector	Technology Stocks	35.30%	13.07%	51.63%
Idea	Semiconductor Stocks List	60.61%	7.19%	32.20%
Idea	Self Driving Car Stocks List	28.68%	7.36%	63.96%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	5.48M	12.88%	$388.22M
Blackrock funding, inc. /de	3.83M	9.00%	$271.16M
Blackrock	3.47M	8.52%	$187.38M
State street	1.68M	3.97%	$138.70M
Jericho capital asset management	1.21M	2.86%	$100.13M
Geode capital management	1.02M	2.40%	$72.31M
Millennium management	910.17K	2.18%	$45.81M
Morgan stanley	911.48K	2.14%	$64.57M
Manufacturers life insurance company, the	853.22K	2.01%	$70.41M
Fuller & thaler asset management	848.09K	1.99%	$60.08M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
S squared	128.55K	3.53%	$9.11M
Kodai capital management lp	778.55K	2.32%	$56.63M
Oberweis asset management inc/	611.36K	1.93%	$50.45M
Sws partners	89.19K	1.53%	$6.32M
Westerly capital management	45.00K	1.16%	$3.71M
Sora investors	152.37K	1.16%	$12.57M
Virtus etf advisers	20.93K	1.13%	$1.73M
G2 investment partners management	66.00K	1.10%	$5.45M
Essex investment management	85.35K	1.08%	$7.04M
Connective capital management	13.93K	1.06%	$1.15M

Top Buyers

Holder	Shares	% Assets	Change
Balyasny asset management	459.56K	0.05%	413.36K
Driehaus capital management	381.13K	0.23%	381.13K
Axa investment managers	332.58K	0.07%	332.58K
Vanguard group	5.48M	0.01%	311.65K
Arrowstreet capital, limited partnership	316.38K	0.02%	203.72K

Top Sellers

Holder	Shares	% Assets	Change
Macquarie group	-	-	-1.18M
Manufacturers life insurance company, the	853.22K	0.06%	-518.30K
Millennium management	910.17K	0.02%	-484.02K
Woodline partners lp	-	-	-441.38K
Axa	-	-	-356.99K

New Positions

Holder	Shares	% Assets	Change	Value
Driehaus capital management	381.13K	0.23%	381.13K	$31.45M
Axa investment managers	332.58K	0.07%	332.58K	$27.44M
Readystate asset management lp	72.94K	0.26%	72.94K	$6.02M
G2 investment partners management	66.00K	1.10%	66.00K	$5.45M
Dnb asset management as	47.16K	0.01%	47.16K	$3.34M

Sold Out

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

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
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%
Dec 31, 2024	319	11.15%	33,697,450	2.34%	81	1.28%	155	13.97%	100	9.89%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	1.27M	2.96%	3.43K
Vanguard US Total Market Shares ETF	1.24M	2.95%	1.28K
Vanguard Information Technology ETF	992.59K	2.31%	4.11K
iShares Russell 2000 ETF	983.99K	2.29%	199.00K
Vanguard Small Cap Index	918.65K	2.13%	-1.02K
SPDR® S&P Semiconductor ETF	647.44K	1.52%	-
State Street® SPDR® S&P® Smcndctr ETF	596.91K	1.39%	-
FullerThaler Behavioral Small-Cap Growth	586.61K	1.36%	-200.03K
FullerThaler Behavioral Sm-Cp Gr R6	540.00K	1.25%	-182.50K
T. Rowe Price New Horizons	515.10K	1.20%	17.40K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Dec 30, 2025	Ju Chi-Hong	Senior VP, Systems & GM, Asia	Sell	$558.14K
Jan 05, 2026	Ju Chi-Hong	Senior VP, Systems & GM, Asia	Sell	$584.11K
Dec 30, 2025	Ju Chi-Hong	Senior VP, Systems & GM, Asia	Sell	$264.75K
Dec 26, 2025	PAISLEY CHRISTOPHER B	-	Sell	$36.09K
Dec 17, 2025	Young John Alexander	CFO	Sell	$185.22K

Insider Transactions Trends

Date	Buy	Sell
2026 Q1	-	1
2025 Q4	-	11
2025 Q3	-	6
2025 Q2	-	7
2025 Q1	-	24

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 (3.83M shares, 9.00%), and Blackrock (3.47M shares, 8.52%). Together, they hold 30.40% 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?

S squared is Ambarella’s biggest shareholder by percentage of total assets invested, with 3.53% of its assets in 128.55K Ambarella shares, valued at 9.11M$.

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 2.96% of its total shares outstanding invested in 1.27M Ambarella shares.

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