Massachusetts Financial Services
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Massachusetts Financial Services’s Amprius Technologies AMPX Stock Holding History

Massachusetts Financial Services’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 		$7.02M Sell
506,268
-1,518,492
-75% -$27.2M ﹤0.01% 779
2026
Q1 		$34.1M Buy
+2,024,760
New +$26.4M 0.01% 546

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

Massachusetts Financial Services's AMPX Position: Q2 2026 in Review

Massachusetts Financial Services reduced its Amprius Technologies (AMPX) stake by 75% in Q2 2026, selling an estimated $27.2M and leaving 506,268 shares worth $7.02M. The position accounts for ﹤0.01% of the portfolio, ranked #779.

Massachusetts Financial Services first reported a position in AMPX in Q1 2026 and has held it in 2 quarters since. The position peaked at $34.1M in Q1 2026. 262 funds tracked by Wall St. Rank hold AMPX as of Q2 2026.

  • Massachusetts Financial Services held 506,268 shares of Amprius Technologies worth $7.02M as of Q2 2026.
  • Massachusetts Financial Services sold 1,518,492 Amprius Technologies shares in Q2 2026, an estimated $27.2M.
  • Amprius Technologies made up ﹤0.01% of Massachusetts Financial Services's portfolio in Q2 2026, its #779 holding.
  • Massachusetts Financial Services first reported a position in Amprius Technologies in Q1 2026 and has held it in 2 quarters since.
  • Massachusetts Financial Services's Amprius Technologies position peaked at $34.1M in Q1 2026.
  • 262 funds tracked by Wall St. Rank held Amprius Technologies as of Q2 2026.

Based on Massachusetts Financial Services's 13F filing for Q2 2026, filed 3 Aug 2026.