Phillip P. Chan, the Chief Executive Officer of $CTSO, bought 251,136 shares of the company on 06-12-2026 for an estimated $100,454. 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 16.9%. Following this trade, they now own 1,734,099 shares of this class of $CTSO stock.
$CTSO Insider Trading Activity
$CTSO insiders have traded $CTSO stock on the open market 2 times in the past 6 months. Of those trades, 2 have been purchases and 0 have been sales.
Here’s a breakdown of recent trading of $CTSO stock by insiders over the last 6 months:
- PHILLIP P. CHAN (Chief Executive Officer) has made 2 purchases buying 261,469 shares for an estimated $104,897 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.
$CTSO Hedge Fund Activity
We have seen 19 institutional investors add shares of $CTSO stock to their portfolio, and 24 decrease their positions in their most recent quarter.
Here are some of the largest recent moves:
- CM MANAGEMENT, LLC added 188,372 shares (+14.6%) to their portfolio in Q4 2025, for an estimated $120,407
- SKYLANDS CAPITAL, LLC removed 147,017 shares (-7.9%) from their portfolio in Q1 2026, for an estimated $83,255
- CITADEL ADVISORS LLC removed 138,480 shares (-92.8%) from their portfolio in Q1 2026, for an estimated $78,421
- GEODE CAPITAL MANAGEMENT, LLC added 103,495 shares (+17.1%) to their portfolio in Q1 2026, for an estimated $58,609
- SARGENT INVESTMENT GROUP, LLC removed 62,100 shares (-10.1%) from their portfolio in Q1 2026, for an estimated $35,167
- NEUBERGER BERMAN GROUP LLC added 57,367 shares (+3.5%) to their portfolio in Q1 2026, for an estimated $32,486
- SUSQUEHANNA INTERNATIONAL GROUP, LLP removed 53,418 shares (-64.1%) from their portfolio in Q1 2026, for an estimated $30,250
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.
$CTSO Revenue
$CTSO had revenues of $9.2M in Q4 2025. This is an increase of 0.92% from the same period in the prior year.
You can track CTSO financials on Quiver Quantitative's CTSO stock page.
You can access data on CTSO stock through the Quiver Quantitative API.
This article is not financial advice. See Quiver Quantitative's disclaimers for more information.
