DOSSIER · 13F Holders · Q1 2026
AMPGR

AMPLITECH GROUP INC

5 institutions still hold AMPLITECH GROUP INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 03211Q135·5 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$203K
visible holders
Holders
5
filers reporting
Concentration
46.82%
Cable Car Capital, LP #1
top holder share
AI Holders Summary · Q1 2026

5 institutions reported AMPGR in Q1 2026. Cable Car Capital, LP leads at 46.8% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
Cable Car Capital, LP
CIK 0001699575
$95K950K0.03%Q1 2026
02
HEIGHTS CAPITAL MANAGEMENT, INC
CIK 0001081698
$86K1.2M0.02%Q1 2026
03
Warberg Asset Management LLC
CIK 0001597506
$19K200K0.00%Q1 2026
04
EQUITEC PROPRIETARY MARKETS, LLC
CIK 0001143261
$3K2K0.00%Q2 2026
05
WELLS FARGO & COMPANY/MN
CIK 0000072971
$1001K0.00%Q1 2026