Essex Investment Management’s Ambarella AMBA Stock Holding History

Essex Investment Management’s Portfolio AMBA Stock Details AMBA Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$4.24M	Sell	82,387 -1,456	-2%	-$90.8K	0.67%	48
2025 Q4	$5.94M	Sell	83,843 -1,509	-2%	-$122K	0.91%	33
2025 Q3	$7.04M	Buy	85,352 +873	+1%	+$63.4K	1.08%	25
2025 Q2	$5.58M	Sell	84,479 -1,952	-2%	-$104K	1.01%	24
2025 Q1	$4.35M	Sell	86,431 -4,091	-5%	-$280K	0.91%	27
2024 Q4	$6.58M	Buy	90,522 +5,098	+6%	+$325K	1.18%	15
2024 Q3	$4.82M	Sell	85,424 -1,795	-2%	-$95.5K	0.84%	35
2024 Q2	$4.71M	Buy	+87,219	New	+$4.33M	0.88%	33
2020 Q1	–	Sell	-15,000	Closed	-$908K	–	391
2019 Q4	$908K	Hold	15,000	–	–	0.11%	245
2019 Q3	$943K	Buy	+15,000	New	+$778K	0.14%	219
2015 Q2	–	Sell	-49,825	Closed	-$3.77M	–	313
2015 Q1	$3.77M	Buy	+49,825	New	+$3.02M	0.53%	54

Other funds holding AMBA

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Manulife (Manufacturers Life Insurance) Canada, Ontario, Canada $116B AUM 26.37% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Legal & General Group London, United Kingdom $432B AUM 29.4% 1-Year Est. Return

Essex Investment Management's AMBA Position: Q1 2026 in Review

Essex Investment Management reduced its Ambarella (AMBA) stake by 1.7% in Q1 2026, selling an estimated $90.8K and leaving 82,387 shares worth $4.24M. The position accounts for 0.67% of the portfolio, ranked #48.

Essex Investment Management first reported a position in AMBA in Q1 2015 and has held it in 11 quarters since. The position peaked at $7.04M in Q3 2025. 305 funds tracked by Wall St. Rank hold AMBA as of Q1 2026.

Essex Investment Management held 82,387 shares of Ambarella worth $4.24M as of Q1 2026.
Essex Investment Management sold 1,456 Ambarella shares in Q1 2026, an estimated $90.8K.
Ambarella made up 0.67% of Essex Investment Management's portfolio in Q1 2026, its #48 holding.
Essex Investment Management first reported a position in Ambarella in Q1 2015 and has held it in 11 quarters since.
Essex Investment Management's Ambarella position peaked at $7.04M in Q3 2025.
305 funds tracked by Wall St. Rank held Ambarella as of Q1 2026.

Based on Essex Investment Management's 13F filing for Q1 2026, filed 11 May 2026.