AMPRIUS TECHNOLOGIES INC

$AMPX
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Smart money positioned

8 of the Top-200 alpha managers hold $AMPX as of the latest 13F snapshot.

13F holders
251
Insider buys · 90d
0
Congress · 90d
0

Smart Money · top-200 alpha cohort

8 holders · Q1 2026

$AMPX is held by 8 managers from the Top-Performer cohort as of Q1 2026. Position weights range from 0.00% to 0.19%, with an average of 0.03% of portfolio. Largest holder: Hel Ved Capital Management Ltd at 0.19%. A weekly Smart-Money commentary for this ticker has not been generated yet this batch — the table below shows the full cohort positioning.

01
Hel Ved Capital Management Ltd
0.19% NEW
α +36.9pts
02
Voloridge Investment Management, LLC
0.04% held
α +15.5pts
03
Caption Management, LLC
0.01% held
α +15.5pts
04
Quarry LP
0.00% held
α +10.6pts
05
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
0.00% held
α +27.5pts

Smart Money shows holdings from our Top-Performer cohort — the 200 highest-alpha manager_13f funds in our universe. Position weight (current quarter) and QoQ delta versus prior quarter. α is the manager's annual alpha vs benchmark.

Institutional holders

Top 10 of 251 · Source: 13F-HR
01
Brightline Capital Management, LLC
0.01% of portfolio
20,643,600 sh
02
Exor N.V.
0.01% of portfolio
18,817,862 sh
03
Solus Alternative Asset Management LP
0.01% of portfolio
5,337,200 sh
04
Deutsche Bank AG
0.01% of portfolio
3,905,944 sh
05
Wellington Management Group LLP
0.47% of portfolio
3,794,178 sh
06
Leuthold Group, LLC
0.05% of portfolio
3,506,075 sh
07
Axa S.a.
—
2,712,630 sh
08
State Street
—
2,553,710 sh
09
Elgethun Capital Management
0.04% of portfolio
2,542,977 sh
10
Northeast Financial Consultants Inc
0.03% of portfolio
2,182,521 sh
See all 251 13F holders · Pro →

Insider activity · last 90 days

21 transactions · 4 filers
28 Jan 2026
Stefan Constantin Ionel —
▼ SOLD
39,690
$12.00
S
23 Jan 2026
Stefan Constantin Ionel —
▼ SOLD
1,600
$12.00
S
22 Jan 2026
Stefan Constantin Ionel —
▼ SOLD
492,827
$12.04
S
21 Jan 2026
Stefan Constantin Ionel —
▼ SOLD
73,280
$12.00
S
20 Jan 2026
Sun Kang —
▼ SOLD
43,185
$11.03
S
16 Jan 2026
Sun Kang —
▼ SOLD
950,548
$11.07
S
12 Jan 2026
Sun Kang —
▼ SOLD
506,267
$10.10
S
11 Dec 2025
Stefan Constantin Ionel —
▼ SOLD
198,255
$10.51
S
21 Nov 2025
Stefan Constantin Ionel —
▼ SOLD
25,024
$10.08
S
21 Nov 2025
Sun Kang —
▼ SOLD
68,655
$10.08
S
17 Nov 2025
Sun Kang —
▼ SOLD
1,000,000
$10.60
S
21 Aug 2025
Stefan Constantin Ionel —
▼ SOLD
19,159
$6.82
S

Transaction codes: P open-market purchase · S sale · M option exercise · A grant · F tax-withhold sale. Insider names link to each individual's expert page.

Congress trades · last 90 days

No Congress trades

No STOCK Act filings reference $AMPX in the recent window.

Source data: SEC EDGAR · 13F-HR · Form 4 · U.S. House Clerk PTR (disclosures-clerk.house.gov) · Senate eFD (senate.gov) · Last refreshed 10:26 UTC.