California State Teachers Retirement System (CalSTRS)
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California State Teachers Retirement System (CalSTRS)’s Ambarella AMBA Stock Holding History

California State Teachers Retirement System (CalSTRS)’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 		$2.47M Buy
47,918
+9,273
+24% +$578K ﹤0.01% 1404
2025
Q4 		$2.74M Buy
38,645
+2,299
+6% +$186K ﹤0.01% 1245
2025
Q3 		$3M Buy
36,346
+2
+0% +$145 ﹤0.01% 1187
2025
Q2 		$2.4M Buy
36,344
+544
+2% +$28.8K ﹤0.01% 1281
2025
Q1 		$1.8M Sell
35,800
-766
-2% -$52.4K ﹤0.01% 1392
2024
Q4 		$2.66M Sell
36,566
-189
-0.5% -$12K ﹤0.01% 1236
2024
Q3 		$2.07M Sell
36,755
-1,126
-3% -$59.9K ﹤0.01% 1386
2024
Q2 		$2.04M Sell
37,881
-383
-1% -$19K ﹤0.01% 1363
2024
Q1 		$1.94M Sell
38,264
-2,113
-5% -$115K ﹤0.01% 1434
2023
Q4 		$2.47M Sell
40,377
-1,243
-3% -$67.8K ﹤0.01% 1314
2023
Q3 		$2.21M Sell
41,620
-3,623
-8% -$254K ﹤0.01% 1334
2023
Q2 		$3.79M Sell
45,243
-613
-1% -$44.8K 0.01% 1119
2023
Q1 		$3.55M Sell
45,856
-198
-0.4% -$16.9K 0.01% 1128
2022
Q4 		$3.79M Buy
46,054
+538
+1% +$35.8K 0.01% 1099
2022
Q3 		$2.56M Sell
45,516
-49
-0.1% -$3.63K ﹤0.01% 1291
2022
Q2 		$2.98M Sell
45,565
-774
-2% -$62.4K ﹤0.01% 1252
2022
Q1 		$4.86M Sell
46,339
-3,591
-7% -$458K 0.01% 1076
2021
Q4 		$10.1M Buy
49,930
+1,364
+3% +$253K 0.01% 775
2021
Q3 		$7.56M Buy
48,566
+405
+0.8% +$46.6K 0.01% 948
2021
Q2 		$5.13M Sell
48,161
-2,957
-6% -$293K 0.01% 1158
2021
Q1 		$5.13M Buy
51,118
+1,047
+2% +$114K 0.01% 1162
2020
Q4 		$4.6M Buy
50,071
+7
+0% +$490 0.01% 1155
2020
Q3 		$2.61M Buy
50,064
+576
+1% +$27.9K ﹤0.01% 1339
2020
Q2 		$2.27M Buy
49,488
+299
+0.6% +$15.4K ﹤0.01% 1402
2020
Q1 		$2.39M Buy
49,189
+950
+2% +$54.5K 0.01% 1198
2019
Q4 		$2.92M Sell
48,239
-974
-2% -$53.9K 0.01% 1339
2019
Q3 		$3.09M Buy
49,213
+588
+1% +$30.5K 0.01% 1264
2019
Q2 		$2.15M Buy
48,625
+1,150
+2% +$51.5K ﹤0.01% 1505
2019
Q1 		$2.05M Sell
47,475
-1,056
-2% -$41.8K ﹤0.01% 1511
2018
Q4 		$1.7M Sell
48,531
-1,004
-2% -$35.6K ﹤0.01% 1575
2018
Q3 		$1.92M Sell
49,535
-18
-0% -$697 ﹤0.01% 1657
2018
Q2 		$1.91M Buy
49,553
+112
+0.2% +$5.3K ﹤0.01% 1645
2018
Q1 		$2.42M Sell
49,441
-1,733
-3% -$89.9K 0.01% 1399
2017
Q4 		$3.01M Sell
51,174
-809
-2% -$45K 0.01% 1309
2017
Q3 		$2.55M Sell
51,983
-5,513
-10% -$272K 0.01% 1407
2017
Q2 		$2.79M Sell
57,496
-5,554
-9% -$308K 0.01% 1396
2017
Q1 		$3.45M Sell
63,050
-3,000
-5% -$162K 0.01% 1311
2016
Q4 		$3.58M Sell
66,050
-1,800
-3% -$109K 0.01% 1309
2016
Q3 		$4.99M Buy
67,850
+600
+0.9% +$37.6K 0.01% 1065
2016
Q2 		$3.42M Buy
67,250
+714
+1% +$31.5K 0.01% 1267
2016
Q1 		$2.97M Buy
66,536
+8,519
+15% +$353K 0.01% 1364
2015
Q4 		$3.23M Buy
58,017
+900
+2% +$50.7K 0.01% 1224
2015
Q3 		$3.3M Sell
57,117
-100
-0.2% -$9.44K 0.01% 1197
2015
Q2 		$5.88M Buy
57,217
+4,450
+8% +$389K 0.01% 933
2015
Q1 		$4M Sell
52,767
-900
-2% -$54.6K 0.01% 1151
2014
Q4 		$2.72M Buy
53,667
+527
+1% +$24.6K 0.01% 1404
2014
Q3 		$2.32M Buy
53,140
+502
+1% +$16.6K 0.01% 1461
2014
Q2 		$1.64M Buy
52,638
+19,100
+57% +$505K ﹤0.01% 1738
2014
Q1 		$896K Hold
33,538
– – ﹤0.01% 2070
2013
Q4 		$1.14M Buy
33,538
+500
+2% +$11.5K ﹤0.01% 1907
2013
Q3 		$645K Buy
33,038
+800
+2% +$13.6K ﹤0.01% 2213
2013
Q2 		$543K Buy
+32,238
New +$489K ﹤0.01% 2246

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

California State Teachers Retirement System (CalSTRS)'s AMBA Position: Q1 2026 in Review

California State Teachers Retirement System (CalSTRS) increased its Ambarella (AMBA) stake by 24% in Q1 2026, buying an estimated $578K and bringing the position to 47,918 shares worth $2.47M. The position accounts for ﹤0.01% of the portfolio, ranked #1404.

California State Teachers Retirement System (CalSTRS) first reported a position in AMBA in Q2 2013 and has held it in 52 quarters since. The position peaked at $10.1M in Q4 2021. 307 funds tracked by Wall St. Rank hold AMBA as of Q1 2026.

  • California State Teachers Retirement System (CalSTRS) held 47,918 shares of Ambarella worth $2.47M as of Q1 2026.
  • California State Teachers Retirement System (CalSTRS) bought 9,273 Ambarella shares in Q1 2026, an estimated $578K.
  • Ambarella made up ﹤0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q1 2026, its #1404 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Ambarella in Q2 2013 and has held it in 52 quarters since.
  • California State Teachers Retirement System (CalSTRS)'s Ambarella position peaked at $10.1M in Q4 2021.
  • 307 funds tracked by Wall St. Rank held Ambarella as of Q1 2026.

Based on California State Teachers Retirement System (CalSTRS)'s 13F filing for Q1 2026, filed 18 May 2026.