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Vanguard Personalized Indexing Management’s Ambarella AMBA Stock Holding History

Vanguard Personalized Indexing 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 		$266K Buy
5,160
+633
+14% +$39.5K ﹤0.01% 1673
2025
Q4 		$321K Sell
4,527
-10
-0.2% -$808 ﹤0.01% 1483
2025
Q3 		$374K Buy
4,537
+142
+3% +$10.3K ﹤0.01% 1377
2025
Q2 		$290K Buy
+4,395
New +$233K ﹤0.01% 1458
2025
Q1 		– Sell
-3,005
Closed -$219K – 1844
2024
Q4 		$219K Buy
+3,005
New +$191K ﹤0.01% 1487

Other funds holding AMBA

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
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)
Manulife (Manufacturers Life Insurance) Canada, Ontario, Canada $116B AUM 26.37% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
Legal & General Group
Legal & General Group London, United Kingdom $432B AUM 29.4% 1-Year Est. Return

Vanguard Personalized Indexing Management's AMBA Position: Q1 2026 in Review

Vanguard Personalized Indexing Management increased its Ambarella (AMBA) stake by 14% in Q1 2026, buying an estimated $39.5K and bringing the position to 5,160 shares worth $266K. The position accounts for ﹤0.01% of the portfolio, ranked #1673.

Vanguard Personalized Indexing Management first reported a position in AMBA in Q4 2024 and has held it in 5 quarters since. The position peaked at $374K in Q3 2025. 305 funds tracked by Wall St. Rank hold AMBA as of Q1 2026.

  • Vanguard Personalized Indexing Management held 5,160 shares of Ambarella worth $266K as of Q1 2026.
  • Vanguard Personalized Indexing Management bought 633 Ambarella shares in Q1 2026, an estimated $39.5K.
  • Ambarella made up ﹤0.01% of Vanguard Personalized Indexing Management's portfolio in Q1 2026, its #1673 holding.
  • Vanguard Personalized Indexing Management first reported a position in Ambarella in Q4 2024 and has held it in 5 quarters since.
  • Vanguard Personalized Indexing Management's Ambarella position peaked at $374K in Q3 2025.
  • 305 funds tracked by Wall St. Rank held Ambarella as of Q1 2026.

Based on Vanguard Personalized Indexing Management's 13F filing for Q1 2026, filed 14 May 2026.