CenterBook Partners’s Ambarella AMBA Stock Holding History

CenterBook Partners’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	–	Sell	-6,954	Closed	-$493K	–	637
2025 Q4	$493K	Buy	+6,954	New	+$562K	0.02%	487
2023 Q4	–	Sell	-96,882	Closed	-$5.14M	–	383
2023 Q3	$5.14M	Buy	96,882 +83,527	+625%	+$5.87M	0.64%	28
2023 Q2	$1.12M	Sell	13,355 -46,224	-78%	-$3.38M	0.14%	226
2023 Q1	$4.61M	Buy	59,579 +29,266	+97%	+$2.51M	0.65%	28
2022 Q4	$2.49M	Buy	+30,313	New	+$2.02M	0.41%	67

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

CenterBook Partners's AMBA Position: Q1 2026 in Review

CenterBook Partners sold out of Ambarella (AMBA) in Q1 2026, closing a stake of 6,954 shares — an estimated $493K sold.

CenterBook Partners first reported a position in AMBA in Q4 2022 and held it in 5 quarters. The position peaked at $5.14M in Q3 2023. 305 funds tracked by Wall St. Rank hold AMBA as of Q1 2026.

CenterBook Partners reported no remaining Ambarella position as of Q1 2026 after selling out during the quarter.
CenterBook Partners sold 6,954 Ambarella shares in Q1 2026, an estimated $493K.
CenterBook Partners first reported a position in Ambarella in Q4 2022 and held it in 5 quarters.
CenterBook Partners's Ambarella position peaked at $5.14M in Q3 2023.
305 funds tracked by Wall St. Rank held Ambarella as of Q1 2026.

Based on CenterBook Partners's 13F filing for Q1 2026, filed 5 May 2026.