Citadel Advisors’s Amprius Technologies AMPX Stock Holding History

Citadel Advisors’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	$22.5M	Buy	1,334,300 +829,000	+164%	+$10.8M	﹤0.01%	2198
2025 Q4	$3.99M	Buy	505,300 +255,300	+102%	+$2.92M	﹤0.01%	4661
2025 Q3	$2.63M	Buy	250,000 +235,500	+1,624%	+$1.85M	﹤0.01%	5534
2025 Q2	$61K	Sell	14,500 -8,000	-36%	-$22.5K	﹤0.01%	11667
2025 Q1	$60.3K	Sell	22,500 -600	-3%	-$1.77K	﹤0.01%	12105
2024 Q4	$64.7K	Buy	23,100 +16,000	+225%	+$28K	﹤0.01%	12083
2024 Q3	$7.88K	Buy	7,100 +1,900	+37%	+$2.09K	﹤0.01%	13338
2024 Q2	$6.6K	Sell	5,200 -18,500	-78%	-$30.2K	﹤0.01%	13319
2024 Q1	$62.8K	Buy	23,700 +19,400	+451%	+$72K	﹤0.01%	11943
2023 Q4	$22.7K	Sell	4,300 -8,700	-67%	-$32.7K	﹤0.01%	12513
2023 Q3	$61.6K	Buy	+13,000	New	+$76.5K	﹤0.01%	11497
2023 Q2	–	Sell	-7,300	Closed	-$63.6K	–	14281
2023 Q1	$63.6K	Buy	7,300 +6,100	+508%	+$38.5K	﹤0.01%	11848
2022 Q4	$9.52K	Buy	+1,200	New	+$11K	﹤0.01%	13672

Other funds holding AMPX

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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 New York $124B AUM 33.93% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Citadel Advisors's AMPX Position: Q1 2026 in Review

Citadel Advisors increased its Amprius Technologies (AMPX) stake by 216% in Q1 2026, buying an estimated $12.8M and bringing the position to 1,438,660 shares worth $24.3M. The position accounts for ﹤0.01% of the portfolio, ranked #2099.

Citadel Advisors first reported a position in AMPX in Q3 2022 and has held it in 8 quarters since. The position peaked at $26.4M in Q3 2025. 245 funds tracked by Wall St. Rank hold AMPX as of Q1 2026.

Citadel Advisors held 1,438,660 shares of Amprius Technologies worth $24.3M as of Q1 2026.
Citadel Advisors bought 983,806 Amprius Technologies shares in Q1 2026, an estimated $12.8M.
Amprius Technologies made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #2099 holding.
Citadel Advisors first reported a position in Amprius Technologies in Q3 2022 and has held it in 8 quarters since.
Citadel Advisors's Amprius Technologies position peaked at $26.4M in Q3 2025.
245 funds tracked by Wall St. Rank held Amprius Technologies as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.