California State Teachers Retirement System (CalSTRS)
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California State Teachers Retirement System (CalSTRS)’s Amprius Technologies AMPX Stock Holding History

California State Teachers Retirement System (CalSTRS)’s Portfolio AMPX Stock Details AMPX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$2.7M Buy
159,903
+51,973
+48% +$678K ﹤0.01% 1355
2025
Q4 		$852K Buy
107,930
+24,304
+29% +$278K ﹤0.01% 1865
2025
Q3 		$880K Buy
83,626
+77,810
+1,338% +$612K ﹤0.01% 1840
2025
Q2 		$24.5K Buy
5,816
+4,801
+473% +$13.5K ﹤0.01% 2443
2025
Q1 		$2.72K Hold
1,015
– – ﹤0.01% 2995
2024
Q4 		$2.84K Hold
1,015
– – ﹤0.01% 3036
2024
Q3 		$1.13K Hold
1,015
– – ﹤0.01% 3065
2024
Q2 		$1.29K Buy
1,015
+380
+60% +$620 ﹤0.01% 3074
2024
Q1 		$1.68K Sell
635
-265
-29% -$984 ﹤0.01% 3035
2023
Q4 		$4.76K Sell
900
-286
-24% -$1.07K ﹤0.01% 3049
2023
Q3 		$5.62K Sell
1,186
-603
-34% -$3.55K ﹤0.01% 3081
2023
Q2 		$12.8K Buy
+1,789
New +$15.4K ﹤0.01% 3083

Other funds holding AMPX

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

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

California State Teachers Retirement System (CalSTRS) increased its Amprius Technologies (AMPX) stake by 48% in Q1 2026, buying an estimated $678K and bringing the position to 159,903 shares worth $2.7M. The position accounts for ﹤0.01% of the portfolio, ranked #1355.

California State Teachers Retirement System (CalSTRS) first reported a position in AMPX in Q2 2023 and has held it in 12 quarters since. 245 funds tracked by Wall St. Rank hold AMPX as of Q1 2026.

  • California State Teachers Retirement System (CalSTRS) held 159,903 shares of Amprius Technologies worth $2.7M as of Q1 2026.
  • California State Teachers Retirement System (CalSTRS) bought 51,973 Amprius Technologies shares in Q1 2026, an estimated $678K.
  • Amprius Technologies made up ﹤0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q1 2026, its #1355 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Amprius Technologies in Q2 2023 and has held it in 12 quarters since.
  • 245 funds tracked by Wall St. Rank held Amprius Technologies as of Q1 2026.

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