BlackRock, Inc. Reports 13.5% Stake in Sphere Entertainment Co. (SPHR)

On April 7, 2026, BlackRock, Inc. filed a Schedule 13G with the SEC, reporting a significant new ownership stake in Sphere Entertainment Co. (SPHR). As of the event date on March 31, 2026, BlackRock holds 3,853,804 shares of Class A Stock, representing a 13.5% ownership interest in the company. This filing marks an increase from a previous reported position of zero. The filing indicates that BlackRock has sole voting power over 3,811,332 shares and sole dispositive power over the full 3,853,804 shares. Notably, the iShares Core S&P Small-Cap ETF is identified as having an interest in the common stock exceeding five percent of the total outstanding shares. The acquisition was made in the ordinary course of business, suggesting a passive investment strategy rather than an intent to influence or change the control of Sphere Entertainment Co. The filing was signed by Spencer Fleming, Managing Director at BlackRock, Inc.