13F Insight
DOSSIER · 13F Holders · Q2 2026
AMPX/WS

AMPRIUS TECHNOLOGIES INC

12 institutions still hold AMPRIUS TECHNOLOGIES INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 03214Q116·12 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$25M
visible holders
Holders
12
filers reporting
Concentration
43.86%
LMR Partners LLP #1
top holder share
AI Holders Summary · Q2 2026

12 institutions reported AMPX/WS in Q2 2026. LMR Partners LLP leads at 43.9% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
LMR Partners LLP
CIK 0001578621
$11M1.9M0.04%Q2 202602
Caption Management, LLC
CIK 0001706766
$8M1.4M0.04%Q2 202603
DRW Securities, LLC
CIK 0001481986· Market maker
$2M356K0.05%Q2 202604
Janney Montgomery Scott LLC
CIK 0001329948
$1M158K0.00%Q1 202605
ARISTEIA CAPITAL, L.L.C.
CIK 0001080171
$830K142K0.01%Q2 202606
D. E. Shaw & Co., Inc.
CIK 0001009207
$686K267K0.00%Q4 202507
ZAZOVE ASSOCIATES LLC
CIK 0001009012
$595K102K0.05%Q2 202608
BOOTHBAY FUND MANAGEMENT, LLC
CIK 0001549230
$554K40K0.01%Q2 202609
AVANTAX ADVISORY SERVICES, INC.
CIK 0001303042
$5K10K0.00%Q2 202510
UBS Group AG
CIK 0001610520
$5K8110.00%Q2 202611
Farther Finance Advisors, LLC
CIK 0001992825
$1220.00%Q2 202612
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025