Kang Sun, the Chief Executive Officer of $AMPX, sold 1,000,000 shares of the company on 11-17-2025 for an estimated $10,595,300. We received data on the trade from a recent SEC filing. This was a sale of approximately 40.4% of their shares of this class of stock. Following this trade, they now own 1,472,306 shares of this class of $AMPX stock.
$AMPX Insider Trading Activity
$AMPX insiders have traded $AMPX stock on the open market 7 times in the past 6 months. Of those trades, 0 have been purchases and 7 have been sales.
Here’s a breakdown of recent trading of $AMPX stock by insiders over the last 6 months:
- KANG SUN (Chief Executive Officer) has made 0 purchases and 3 sales selling 1,135,440 shares for an estimated $11,212,530.
- SANDRA WALLACH (Chief Financial Officer) has made 0 purchases and 2 sales selling 55,985 shares for an estimated $260,622.
- CONSTANTIN IONEL STEFAN (Chief Technology Officer) has made 0 purchases and 2 sales selling 39,525 shares for an estimated $180,121.
To track insider transactions, check out Quiver Quantitative's insider trading dashboard.
$AMPX Hedge Fund Activity
We have seen 148 institutional investors add shares of $AMPX stock to their portfolio, and 54 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- DRIEHAUS CAPITAL MANAGEMENT LLC added 3,090,669 shares (+inf%) to their portfolio in Q3 2025, for an estimated $32,513,837
- MILLENNIUM MANAGEMENT LLC removed 3,028,548 shares (-83.7%) from their portfolio in Q3 2025, for an estimated $31,860,324
- CITADEL ADVISORS LLC added 2,227,142 shares (+796.4%) to their portfolio in Q3 2025, for an estimated $23,429,533
- BLACKROCK, INC. added 2,185,685 shares (+41.5%) to their portfolio in Q3 2025, for an estimated $22,993,406
- DEUTSCHE BANK AG\ added 2,005,102 shares (+3263.6%) to their portfolio in Q3 2025, for an estimated $21,093,673
- VOLORIDGE INVESTMENT MANAGEMENT, LLC added 1,876,140 shares (+inf%) to their portfolio in Q3 2025, for an estimated $19,736,992
- BNP PARIBAS FINANCIAL MARKETS added 1,784,291 shares (+1117.9%) to their portfolio in Q3 2025, for an estimated $18,770,741
To track hedge funds' stock portfolios, check out Quiver Quantitative's institutional holdings dashboard.
$AMPX Analyst Ratings
Wall Street analysts have issued reports on $AMPX in the last several months. We have seen 4 firms issue buy ratings on the stock, and 0 firms issue sell ratings.
Here are some recent analyst ratings:
- Cantor Fitzgerald issued a "Overweight" rating on 11/07/2025
- HC Wainwright & Co. issued a "Buy" rating on 08/08/2025
- B. Riley Securities issued a "Buy" rating on 08/08/2025
- William Blair issued a "Outperform" rating on 07/18/2025
To track analyst ratings and price targets for $AMPX, check out Quiver Quantitative's $AMPX forecast page.
$AMPX Price Targets
Multiple analysts have issued price targets for $AMPX recently. We have seen 4 analysts offer price targets for $AMPX in the last 6 months, with a median target of $13.5.
Here are some recent targets:
- Derek Soderberg from Cantor Fitzgerald set a target price of $16.0 on 11/07/2025
- Christopher Souther from B. Riley Securities set a target price of $11.0 on 08/08/2025
- Amit Dayal from HC Wainwright & Co. set a target price of $18.0 on 08/08/2025
- Chip Moore from Roth Capital set a target price of $10.0 on 08/05/2025
This article is not financial advice. See Quiver Quantitative's disclaimers for more information.
