Institutional shares held 16.7 Million
1.72M calls
129K puts
Total value of holdings $46.9M
$4.83M calls
$363K puts
Market Cap $309M
109,831,000 Shares Out.
Institutional ownership 15.2%
# of Institutions 102


Latest Institutional Activity in AMPX

Top Purchases

Q1 2025
Rhumbline Advisers Shares Held: 15.7K ($44.1K)
Q1 2025
Parallel Advisors, LLC Shares Held: 5.24K ($14.7K)
Q4 2024
Vanguard Group Inc Shares Held: 4.18M ($11.7M)
Q4 2024
Board Of Trustees Of The Leland Stanford Junior University Shares Held: 1.46M ($4.1M)
Q4 2024
Invesco Ltd. Shares Held: 2.48M ($6.98M)

Top Sells

Q4 2024
Charles Schwab Investment Management Inc Shares Held: 198K ($558K)
Q4 2024
Nuveen Asset Management, LLC Shares Held: 23.3K ($65.5K)
Q4 2024
Sei Investments CO Shares Held: 10.2K ($28.7K)
Q4 2024
Jpmorgan Chase & CO Shares Held: 7.51K ($21.1K)
Q4 2024
Spears Abacus Advisors LLC Shares Held: 26.3K ($73.8K)

About AMPX


Insider Transactions at AMPX

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
0 Shares
From 0 Insiders
Sell / Disposition
0 Shares
From 0 Insiders

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