$AMPX stock has now fallen 9% today, according to our price data from Polygon. There has been approximately $109,579,461 of trading volume.
It has been the 319th most-searched ticker on Quiver Quantitative over the last day, out of 11,085 total tickers searched.
Here is what we see in our data on $AMPX (you can track the company live on Quiver's $AMPX stock page):
$AMPX Insider Trading Activity
$AMPX insiders have traded $AMPX stock on the open market 21 times in the past 6 months. Of those trades, 0 have been purchases and 21 have been sales.
Here’s a breakdown of recent trading of $AMPX stock by insiders over the last 6 months:
- KANG SUN has made 0 purchases and 8 sales selling 2,847,775 shares for an estimated $32,111,285.
- CONSTANTIN IONEL STEFAN (Chief Technology Officer) has made 0 purchases and 7 sales selling 856,042 shares for an estimated $9,900,136.
- WEN HSUAN HSIEH has made 0 purchases and 2 sales selling 413,146 shares for an estimated $7,620,033.
- STEVEN CHU has made 0 purchases and 4 sales selling 322,197 shares for an estimated $5,863,983.
To track insider transactions, check out Quiver Quantitative's insider trading dashboard.
$AMPX Hedge Fund Activity
We have seen 128 institutional investors add shares of $AMPX stock to their portfolio, and 83 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- CITADEL ADVISORS LLC removed 2,051,945 shares (-81.9%) from their portfolio in Q4 2025, for an estimated $16,189,846
- BLACKROCK, INC. added 1,368,076 shares (+18.3%) to their portfolio in Q4 2025, for an estimated $10,794,119
- NORGES BANK added 1,304,838 shares (+inf%) to their portfolio in Q4 2025, for an estimated $10,295,171
- BNP PARIBAS FINANCIAL MARKETS removed 1,236,826 shares (-63.6%) from their portfolio in Q4 2025, for an estimated $9,758,557
- HUDSON BAY CAPITAL MANAGEMENT LP added 1,100,000 shares (+inf%) to their portfolio in Q4 2025, for an estimated $8,679,000
- INVESCO LTD. removed 1,067,469 shares (-44.9%) from their portfolio in Q4 2025, for an estimated $8,422,330
- WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC added 984,906 shares (+inf%) to their portfolio in Q4 2025, for an estimated $7,770,908
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 2 firms issue buy ratings on the stock, and 0 firms issue sell ratings.
Here are some recent analyst ratings:
- Needham issued a "Buy" rating on 01/29/2026
- Cantor Fitzgerald issued a "Overweight" rating on 11/07/2025
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 5 analysts offer price targets for $AMPX in the last 6 months, with a median target of $20.0.
Here are some recent targets:
- Austin Bohlig from Needham set a target price of $20.0 on 03/10/2026
- Christopher Souther from B. Riley Securities set a target price of $22.0 on 03/09/2026
- Eric Stine from Craig-Hallum set a target price of $21.0 on 03/06/2026
- Derek Soderberg from Cantor Fitzgerald set a target price of $20.0 on 03/06/2026
- Chip Moore from Roth Capital set a target price of $20.0 on 03/06/2026
You can track data on $AMPX on Quiver Quantitative.
This article is not financial advice. See Quiver Quantitative's disclaimers for more information. Note that there may be inaccuracies due to mistakes in ticker-mapping, and other anomalies.
