Calamos Advisors
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Calamos Advisors’s Amprius Technologies AMPX Stock Holding History

Calamos 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
Q2 		$1.31M Sell
94,158
-270,348
-74% -$4.84M ﹤0.01% 722
2026
Q1 		$6.15M Buy
364,506
+245,473
+206% +$3.2M 0.02% 515
2025
Q4 		$939K Sell
119,033
-52,019
-30% -$595K ﹤0.01% 700
2025
Q3 		$1.8M Buy
+171,052
New +$1.35M 0.01% 636

Other funds holding AMPX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
JAM
Jupiter Asset Management London, United Kingdom $20.2B AUM 29.18% 1-Year Est. Return

Calamos Advisors's AMPX Position: Q2 2026 in Review

Calamos Advisors reduced its Amprius Technologies (AMPX) stake by 74% in Q2 2026, selling an estimated $4.84M and leaving 94,158 shares worth $1.31M. The position accounts for ﹤0.01% of the portfolio, ranked #722.

Calamos Advisors first reported a position in AMPX in Q3 2025 and has held it in 4 quarters since. The position peaked at $6.15M in Q1 2026. 262 funds tracked by Wall St. Rank hold AMPX as of Q2 2026.

  • Calamos Advisors held 94,158 shares of Amprius Technologies worth $1.31M as of Q2 2026.
  • Calamos Advisors sold 270,348 Amprius Technologies shares in Q2 2026, an estimated $4.84M.
  • Amprius Technologies made up ﹤0.01% of Calamos Advisors's portfolio in Q2 2026, its #722 holding.
  • Calamos Advisors first reported a position in Amprius Technologies in Q3 2025 and has held it in 4 quarters since.
  • Calamos Advisors's Amprius Technologies position peaked at $6.15M in Q1 2026.
  • 262 funds tracked by Wall St. Rank held Amprius Technologies as of Q2 2026.

Based on Calamos Advisors's 13F filing for Q2 2026, filed 31 Jul 2026.