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Recent trades from the last 365 days, plus historical signal scoring over 365 days · institutional 13F view →
Buy Trades
0
Sell Trades
0
Buy Value
$0
Sell Value
$0
Historical signal stats are shown once this stock has at least 3 open-market buys or 8 total P/S trades over the last 365 days.
Current sample: 0 buys, 0 sells, 0 open-market trades.
No insider trading activity found for AMPH in the last 365 days.
Insiders' intent to sell, filed before the trade — a leading indicator to the executed Form 4 sales above. All Form 144 notices →
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $105.44M | 0.00% | -3.6% |
| 2 | VANGUARD GROUP INC | $69.85M | 0.00% | -0.9% |
| 3 | STATE STREET CORP | $33.14M | 0.00% | +2.2% |
| 4 | RENAISSANCE TECHNOLOGIES LLC | $10.60M | 0.01% | -5.2% |
| 5 | AQR CAPITAL MANAGEMENT LLC | $4.21M | 0.00% | +164.9% |
| 6 | Point72 Asset Management, L.P. | $1.11M | 0.00% | New |
| 7 | PRICE T ROWE ASSOCIATES INC /MD/ | $1.03M | 0.00% | +13.8% |
| 8 | MILLENNIUM MANAGEMENT LLC | $642.01K | 0.00% | -91.4% |
| 9 | FMR LLC | $584.36K | 0.00% | +2137.9% |
| 10 | CITADEL ADVISORS LLC | $327.54K | 0.00% | -75.2% |
| $290.11K |
| Floyd Petersen | $989.12K |
| Richard Prins | $161.93K |
| PETERS WILLIAM J | $183.89K |