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Ownership — AMPG
Institutional Holdings
Insider Transactions
US Institutional Ownership
38.6%
Institution
Shares
Value
Ownership %
Change
Filing Date
Bard Associates Inc
1.48M
$10.0M
5.76%
-119.9K
2026-06-30
Citadel Advisors LLC
1.44M
$10.0M
5.63%
+1.19M
2026-06-30
Jane Street Group, LLC
1.19M
$8.0M
4.66%
+1.16M
2026-06-30
Vanguard Capital Management LLC
956.5K
$6.0M
3.73%
+151.0K
2026-06-30
Hrt Financial LP
551.1K
$3.0M
2.15%
--
2026-06-30
BlackRock, Inc.
523.0K
$3.0M
2.04%
+414.9K
2026-06-30
Peak6 LLC
507.3K
$3.0M
1.98%
--
2026-06-30
Landscape Capital Management, L.L.C.
449.5K
$3.0M
1.75%
+404.6K
2026-06-30
Equitec Proprietary Markets, LLC
280.4K
$1.0M
1.09%
+274.4K
2026-06-30
Geode Capital Management, LLC
246.1K
$1.0M
0.96%
+3.3K
2026-06-30
Dimensional Fund Advisors LP
185.4K
$1.0M
0.72%
-30.1K
2026-06-30
Informed Momentum Co LLC
134.6K
--
0.52%
-40.1K
2026-06-30
Vanguard Fiduciary Trust Co
130.4K
--
0.51%
+19.2K
2026-06-30
Simplex Trading, LLC
123.9K
--
0.48%
+111.0K
2026-06-30
State Street Corp
113.5K
--
0.44%
+24.3K
2026-06-30
PFG Investments, LLC
110.6K
--
0.43%
+78.1K
2026-06-30
National Bank of Canada
106.9K
--
0.42%
--
2026-06-30
Bridgeway Capital Management, LLC
105.8K
--
0.41%
--
2026-06-30
Thompson Siegel & Walmsley LLC
105.0K
--
0.41%
--
2026-06-30
FNY Investment Advisers, LLC
92.5K
--
0.36%
--
2026-06-30
Two Sigma Investments, LP
92.0K
--
0.36%
--
2026-06-30
Sei Investments Co
79.7K
--
0.31%
-26.9K
2026-06-30
Integrated Wealth Concepts LLC
70.7K
--
0.28%
-354.1K
2026-06-30
UBS Group AG
68.8K
--
0.27%
+42.7K
2026-06-30
Essex Investment Management Co LLC
60.5K
--
0.24%
-27.3K
2026-06-30
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