Janus Henderson Group plc Reports 9.2% Ownership Stake in Glaukos Corp (GKOS)

Janus Henderson Group plc filed a Schedule 13G/A on May 15, 2026, reporting a significant increase in its stake in Glaukos Corp (GKOS). As of the event date on March 31, 2026, the firm beneficially owns 5,348,395 shares of common stock, representing a 9.2% ownership stake. This is a substantial increase from the previously reported 0.0% ownership, indicating a major new position or a catch-up filing for the investment manager. Janus Henderson Group plc acts as the ultimate parent company for several SEC-registered investment advisers, including Janus Henderson Investors US LLC and Janus Henderson Investors UK Limited, which exercise investment and voting discretion over the shares held within various managed portfolios. The filing specifies that the shares were acquired in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer. All 5,348,395 shares are reported under shared voting and dispositive power.