$ATRA stock has now risen 43% today, according to our price data from Polygon. There has been approximately $204,691,172 of trading volume.
Here is what we see in our data on $ATRA (you can track the company live on Quiver's $ATRA stock page):
$ATRA Insider Trading Activity
$ATRA insiders have traded $ATRA stock on the open market 14 times in the past 6 months. Of those trades, 0 have been purchases and 14 have been sales.
Here’s a breakdown of recent trading of $ATRA stock by insiders over the last 6 months:
- INNOVATION LTD PANACEA sold 80,554 shares for an estimated $489,019
- ANHCO NGUYEN (President and CEO) has made 0 purchases and 6 sales selling 5,911 shares for an estimated $53,674.
- YANINA GRANT-HUERTA (Chief Accounting Officer) has made 0 purchases and 7 sales selling 3,908 shares for an estimated $34,478.
To track insider transactions, check out Quiver Quantitative's insider trading dashboard. You can access data on insider stock transactions through the Quiver Quantitative API.
$ATRA Hedge Fund Activity
We have seen 20 institutional investors add shares of $ATRA stock to their portfolio, and 13 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- GLOBEFLEX CAPITAL L P added 61,766 shares (+399.6%) to their portfolio in Q4 2025, for an estimated $1,117,346
- UBS GROUP AG added 48,673 shares (+3484.1%) to their portfolio in Q1 2026, for an estimated $230,223
- MARSHALL WACE, LLP added 32,836 shares (+28.4%) to their portfolio in Q4 2025, for an estimated $594,003
- GSA CAPITAL PARTNERS LLP removed 26,213 shares (-100.0%) from their portfolio in Q4 2025, for an estimated $474,193
- CAMBRIDGE INVESTMENT RESEARCH ADVISORS, INC. removed 22,864 shares (-100.0%) from their portfolio in Q1 2026, for an estimated $108,146
- VANGUARD GROUP INC added 22,502 shares (+11.1%) to their portfolio in Q4 2025, for an estimated $407,061
- MORGAN STANLEY removed 19,947 shares (-55.5%) from their portfolio in Q4 2025, for an estimated $360,841
To track hedge funds' stock portfolios, check out Quiver Quantitative's institutional holdings dashboard. You can access data on hedge funds moves and 13F filings through the Quiver Quantitative API.
You can track data on $ATRA 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.
