BlackRock Portfolio Management LLC filed an amended Schedule 13G with the SEC on October 27, 2026, disclosing beneficial ownership of 2,703,324 shares of common stock in iShares S&P GSCI Commodity-Indexed Trust as of September 30, 2026.

Key Highlights

  • Aggregate beneficial ownership: BlackRock Portfolio Management LLC reported beneficial ownership of 2,703,324 shares of iShares S&P GSCI Commodity-Indexed Trust common stock.
  • Percent of class: The reported position represents 9.4% of the outstanding class of common stock, according to the filing.
  • Sole voting power: The filing states sole voting power over 2,646,146 shares, with 0 shares subject to shared voting power.
  • Sole dispositive power: BlackRock Portfolio Management LLC reported sole dispositive power over all 2,703,324 shares, with no shared dispositive power.
  • Triggering event date: The date of the event requiring this filing was listed as September 30, 2026.
  • Filing entity: The reporting person is BlackRock Portfolio Management LLC, organized in Delaware, with a principal office at 50 Hudson Yards, New York, NY 10001.

BlackRock Portfolio Management's Amended 13G Position in iShares S&P GSCI Commodity-Indexed Trust

BlackRock Portfolio Management LLC submitted Amendment No. 1 to a Schedule 13G covering its holdings in iShares S&P GSCI Commodity-Indexed Trust (CUSIP 46428R107), with the event date of September 30, 2026. The filing was signed by Spencer Fleming, Managing Director, on October 27, 2026. According to the filing, the schedule reflects securities beneficially owned or deemed to be beneficially owned by certain business units of BlackRock, Inc. and its subsidiaries and affiliates, referred to in the document as the "Reporting Business Units."

The filing notes that the disclosure "does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units" in accordance with SEC Release No. 34-39538 (January 12, 1998). BlackRock Portfolio Management LLC is classified as a parent holding company or control person under Item 3(g) of the schedule, with subsidiary identification provided in Exhibit 99.

With respect to third-party interests, the filing states that "various persons have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of the common stock of ISHARES GSCI COMMODITY INDEXED TRUST," and that no single person's interest exceeds five percent of the total outstanding common shares. The issuer's principal executive offices are listed at 400 Howard Street, San Francisco, California, 94105.

What Was Disclosed

BlackRock Portfolio Management LLC disclosed an amended beneficial ownership position of 2,703,324 shares, equal to 9.4% of the outstanding common stock of iShares S&P GSCI Commodity-Indexed Trust, with the triggering event dated September 30, 2026.