Grigorios Siokas, the Chief Executive Officer of $COSM, bought 701,447 shares of the company on 06-10-2026 for an estimated $160,000. This trade was reported by Quiver Quantitative using data from a recent SEC filing. This increased their holdings of this class of stock by approximately 5.6%. Following this trade, they now own 13,263,361 shares of this class of $COSM stock.
$COSM Insider Trading Activity
$COSM insiders have traded $COSM stock on the open market 12 times in the past 6 months. Of those trades, 12 have been purchases and 0 have been sales.
Here’s a breakdown of recent trading of $COSM stock by insiders over the last 6 months:
- GRIGORIOS SIOKAS (Chief Executive Officer) has made 12 purchases buying 3,103,376 shares for an estimated $1,253,000 and 0 sales.
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 insider transaction endpoint.
$COSM Hedge Fund Activity
We have seen 8 institutional investors add shares of $COSM stock to their portfolio, and 13 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- GEODE CAPITAL MANAGEMENT, LLC added 119,427 shares (+60.1%) to their portfolio in Q1 2026, for an estimated $37,882
- CITADEL ADVISORS LLC removed 82,850 shares (-67.3%) from their portfolio in Q1 2026, for an estimated $26,280
- XTX TOPCO LTD removed 59,133 shares (-59.4%) from their portfolio in Q1 2026, for an estimated $18,756
- RENAISSANCE TECHNOLOGIES LLC added 55,925 shares (+16.7%) to their portfolio in Q1 2026, for an estimated $17,739
- HRT FINANCIAL LP added 41,619 shares (+162.2%) to their portfolio in Q1 2026, for an estimated $13,201
- TWO SIGMA SECURITIES, LLC removed 36,290 shares (-100.0%) from their portfolio in Q1 2026, for an estimated $11,511
- STONEX GROUP INC. removed 19,300 shares (-100.0%) from their portfolio in Q4 2025, for an estimated $9,611
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 13F endpoint.
$COSM Revenue
$COSM had revenues of $19.7M in Q4 2025. This is an increase of 38.52% from the same period in the prior year.
You can track COSM financials on Quiver Quantitative's COSM stock page.
You can access data on COSM stock through the Quiver Quantitative API.
This article is not financial advice. See Quiver Quantitative's disclaimers for more information.
