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Driehaus Capital Management’s Ambarella AMBA Stock Holding History

Driehaus Capital 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 		– Sell
-366,251
Closed -$25.9M – 359
2025
Q4 		$25.9M Sell
366,251
-14,880
-4% -$1.2M 0.18% 171
2025
Q3 		$31.5M Buy
+381,131
New +$27.7M 0.23% 150
2023
Q2 		– Sell
-139,095
Closed -$10.8M – 389
2023
Q1 		$10.8M Sell
139,095
-146,090
-51% -$12.5M 0.15% 211
2022
Q4 		$23.5M Buy
+285,185
New +$19M 0.35% 92
2022
Q3 		– Sell
-247,059
Closed -$16.2M – 348
2022
Q2 		$16.2M Buy
247,059
+26,639
+12% +$2.15M 0.26% 133
2022
Q1 		$23.1M Sell
220,420
-367,174
-62% -$46.8M 0.28% 125
2021
Q4 		$119M Buy
587,594
+10,253
+2% +$1.9M 1.22% 7
2021
Q3 		$89.9M Buy
577,341
+357,013
+162% +$41M 1.07% 10
2021
Q2 		$23.5M Buy
220,328
+158,795
+258% +$15.7M 0.31% 106
2021
Q1 		$6.18M Buy
+61,533
New +$6.7M 0.09% 264
2018
Q1 		– Sell
-44,000
Closed -$2.58M – 485
2017
Q4 		$2.58M Buy
44,000
+39,900
+973% +$2.22M 0.1% 237
2017
Q3 		$201K Buy
+4,100
New +$202K 0.01% 468
2016
Q1 		– Sell
-5,152
Closed -$287K – 542
2015
Q4 		$287K Sell
5,152
-8,748
-63% -$493K 0.01% 486
2015
Q3 		$803K Sell
13,900
-115,818
-89% -$10.9M 0.03% 375
2015
Q2 		$13.3M Sell
129,718
-32,151
-20% -$2.81M 0.46% 50
2015
Q1 		$12.3M Sell
161,869
-33,026
-17% -$2M 0.42% 51
2014
Q4 		$9.88M Buy
194,895
+22,234
+13% +$1.04M 0.4% 58
2014
Q3 		$7.54M Buy
172,661
+102,747
+147% +$3.4M 0.29% 86
2014
Q2 		$2.18M Buy
+69,914
New +$1.85M 0.07% 329
2013
Q3 		– Sell
-28,800
Closed -$485K – 437
2013
Q2 		$485K Buy
+28,800
New +$437K 0.02% 389

Other funds holding AMBA

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Manulife (Manufacturers Life Insurance)
Manulife (Manufacturers Life Insurance) Canada, Ontario, Canada $128B AUM 35.83% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return
Legal & General Group
Legal & General Group London, United Kingdom $480B AUM 42.84% 1-Year Est. Return

Driehaus Capital Management's AMBA Position: Q1 2026 in Review

Driehaus Capital Management sold out of Ambarella (AMBA) in Q1 2026, closing a stake of 366,251 shares — an estimated $25.9M sold.

Driehaus Capital Management first reported a position in AMBA in Q2 2013 and held it in 20 quarters. The position peaked at $119M in Q4 2021. 307 funds tracked by Wall St. Rank hold AMBA as of Q1 2026.

  • Driehaus Capital Management reported no remaining Ambarella position as of Q1 2026 after selling out during the quarter.
  • Driehaus Capital Management sold 366,251 Ambarella shares in Q1 2026, an estimated $25.9M.
  • Driehaus Capital Management first reported a position in Ambarella in Q2 2013 and held it in 20 quarters.
  • Driehaus Capital Management's Ambarella position peaked at $119M in Q4 2021.
  • 307 funds tracked by Wall St. Rank held Ambarella as of Q1 2026.

Based on Driehaus Capital Management's 13F filing for Q1 2026, filed 15 May 2026.