Institutional shares held 54.2 Million
3.87M calls
764K puts
Total value of holdings $612M
$43.7M calls
$8.63M puts
Market Cap $1.24B
109,831,000 Shares Out.
Institutional ownership 49.37%
# of Institutions 204


Latest Institutional Activity in AMPX

Top Purchases

Q4 2025
Sg Americas Securities, LLC Shares Held: 255K ($2.88M)
Q4 2025
Cambridge Financial Group, LLC Shares Held: 10K ($113K)
Q4 2025
Allspring Global Investments Holdings, LLC Shares Held: 53.9K ($609K)
Q4 2025
Global X Japan Co., Ltd. Shares Held: 1.49K ($16.8K)
Q4 2025
Gamma Investing LLC Shares Held: 766 ($8.65K)

Top Sells

Q4 2025
Nisa Investment Advisors, LLC Shares Held: 1.18K ($13.3K)
Q3 2025
Millennium Management LLC Shares Held: 588K ($6.64M)
Q3 2025
Renaissance Technologies LLC Shares Held: 12.4K ($140K)
Q3 2025
Marshall Wace, LLP Shares Held: 30.4K ($343K)
Q3 2025
Essex Investment Management CO LLC Shares Held: 697K ($7.87M)

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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