Barclays PLC Reports New 5.54% Stake in Masimo Corp (MASI)

On May 14, 2026, Barclays PLC filed a Schedule 13G indicating a new substantial position in Masimo Corp (MASI). As of the event date of March 31, 2026, Barclays PLC reported beneficial ownership of 2,892,262 shares of common stock, representing a 5.54% ownership stake in the company. This filing marks an increase from a previously reported 0.0% position, crossing the 5% disclosure threshold. The shares are held by Barclays PLC in its capacity as a parent holding company, with several subsidiaries listed as the direct holders, including Barclays Bank PLC, Barclays Capital Inc, Barclays Capital Securities Ltd, and Barclays Investment Solutions Limited. According to the filing, the securities were acquired in the ordinary course of business and are not held for the purpose of changing or influencing the control of the issuer. Barclays PLC maintains sole voting and dispositive power over the entirety of the reported shares. The total value of the holding is estimated at approximately $515.8 million based on the provided supplementary data.