Apollo Management Holdings GP, LLC has recently filed an amendment to its Schedule 13G, disclosing its substantial investment in the Calamos Strategic Total Return Fund. This filing, dated November 13, 2026, reveals that Apollo holds 608,000 Series F Mandatory Redeemable Preferred Shares, representing 15.2% of the total shares outstanding. This move is significant as it reflects Apollo's ongoing commitment to the asset management sector and its strategy to enhance its portfolio.

The Calamos Strategic Total Return Fund, which is based in Naperville, Illinois, is managed by Calamos Advisors LLC. The fund focuses on providing total return through a combination of capital appreciation and income. The recent filing indicates that Apollo's investment strategy is aligned with the fund's objectives, further solidifying its position in the competitive asset management landscape.

Background

Apollo Management Holdings GP, LLC is a prominent player in the asset management industry, known for its strategic investments across various sectors. The company operates under the Central Index Key (CIK) 0001449433. Apollo has been actively involved in the investment community, as evidenced by its recent filings, including multiple Schedule 13G amendments throughout 2026.

What the Filing Says

The recent amendment to the Schedule 13G filing indicates that Apollo Management Holdings GP, LLC, along with its affiliated entities, beneficially owns a total of 608,000 shares of Series F Mandatory Redeemable Preferred Shares of the Calamos Strategic Total Return Fund. The filing states, "The Reporting Persons' aggregate percentage of beneficial ownership of the total amount of Series F MRPS outstanding is based on 4,000,000 shares of the Series F MRPS outstanding as of April 30, 2026." This information highlights Apollo's significant stake in the fund and its influence within the asset management space.

Impact

This filing may impact various stakeholders in the asset management industry, including investors, analysts, and competitors. Apollo's increased stake in Calamos Strategic Total Return Fund signals its confidence in the fund's performance and strategy. This could potentially influence investor sentiment and market dynamics, as other firms may respond to Apollo's aggressive investment posture.

What's Next

The filing does not specify what actions will follow this disclosure. However, continued monitoring of Apollo's investment activities and any subsequent filings will provide insights into its future strategies and the overall direction of the asset management industry.