CALAMOS STRATEGIC TOTAL RETURN FUND (CSQ) has a significant shareholder position reported by Equitable Holdings, Inc. Equitable Holdings beneficially owns 1,200,000 Series H Mandatory Redeemable Preferred Shares, representing 19.87% of that class. Equitable Holdings reports sole voting and sole dispositive power over all of these shares.
CALAMOS STRATEGIC TOTAL RETURN FUND (CSQ) reports that BlackRock Portfolio Management LLC has filed a Schedule 13G disclosing a significant passive ownership position in the fund’s Series H Mandatory Redeemable Preferred Shares.
BlackRock Portfolio Management LLC, organized in Delaware, may be deemed to share beneficial ownership of 2,200,000 Series H preferred shares, representing 36.4% of that class. This is based on 6,040,000 Series H preferred shares outstanding. BlackRock reports no sole voting or dispositive power over these shares, but shared voting and shared dispositive power over the full 2,200,000-share position. Various underlying persons have rights to dividends or sale proceeds, and the filing notes that no single such person holds more than 5% of the total outstanding shares, except for three identified insurance companies.
CALAMOS STRATEGIC TOTAL RETURN FUND (CSQ) received an amended Schedule 13G/A from MetLife Investment Management, LLC stating that, as of August 31, 2026, it no longer beneficially owns any Series D Mandatory Redeemable Preferred Shares.
The reporting person discloses 0 shares beneficially owned, representing 0% of this preferred share class, with no sole or shared voting or dispositive power over any shares.
CALAMOS STRATEGIC TOTAL RETURN FUND (CSQ) reports that The Lincoln National Life Insurance Company and its affiliate Lincoln Life & Annuity Company of New York collectively beneficially own 640,000 Series H Mandatory Redeemable Preferred Shares, representing 10.6% of this class.
Of these, 560,000 shares are held directly by The Lincoln National Life Insurance Company and 80,000 shares are held by Lincoln Life & Annuity Company of New York. The shares were acquired under a Securities Purchase Agreement dated August 26, 2026, and Nomura Investment Management Advisers acts as investment adviser and attorney-in-fact for both entities.
CALAMOS STRATEGIC TOTAL RETURN FUND (CSQ) reports that Lincoln National Life Insurance Company /IN/ and its affiliate collectively hold more than 10% of the fund’s Series H Mandatory Redeemable Preferred Shares, requiring this initial ownership report as a ten percent owner. Lincoln National reports 560,000 Series H shares held directly and an additional 80,000 shares held indirectly through Lincoln Life & Annuity Company of New York.
CALAMOS STRATEGIC TOTAL RETURN FUND (symbol: CSQ) is the issuer of record for a Form 4 filing submitted to the SEC.
Athene Annuity and Life Company and affiliated Apollo entities report beneficial ownership of 608,000 Series F Mandatory Redeemable Preferred Shares of Calamos Strategic Total Return Fund. This represents 15.2% of the Series F MRPS, based on 4,000,000 shares outstanding as of April 30, 2026.
All reporting entities list 0 shares with sole voting or dispositive power and 608,000 shares with shared voting and shared dispositive power. Several Apollo-related entities file on a joint basis and, other than Athene as holder, broadly disclaim beneficial ownership of the securities beyond what may be imputed under Section 13(d) or 13(g).
Calamos Strategic Total Return Fund disclosure: a group of affiliated Apollo entities and Athene Annuity and Life Company report shared voting and dispositive power over 1,920,000 Series F Mandatory Redeemable Preferred Shares, representing 48.0% of that series. The percentage is calculated on 4,000,000 Series F MRPS outstanding as of October 31, 2025. The filing lists the chain of entities in the Apollo/Athene structure and includes the Reporting Persons' disclaimer that several entities disclaim beneficial ownership of the common stock referenced in the schedule.
Calamos Strategic Total Return Fund filed an amended Schedule 13G/A showing that Athene and Apollo-affiliated entities jointly report beneficial ownership of 1,920,000 Series F Mandatory Redeemable Preferred Shares, representing 48% of this share class. These entities report shared voting and shared dispositive power over all of these shares, with no sole voting or dispositive authority.
The reported percentage is based on 4,000,000 Series F shares outstanding as of April 30, 2025, as disclosed in the fund’s shareholder report. The filing states the securities are held in the ordinary course of business and not for the purpose of changing or influencing control of the fund.
This Form N-CEN is an annual report for a registered investment company associated with symbol CSQ. It largely provides structural and operational information about the fund, including directors, service providers, custodians, brokers, and compliance arrangements.
The report shows that the fund engaged in securities lending, with a monthly average value of portfolio securities on loan of 578,411,466.21000000 during the reporting period. Aggregate brokerage activity was meaningful, with total brokerage commissions paid by the fund of 507,107.86000000. Principal trading activity is detailed dealer by dealer, with total value of purchases and sales (excluding maturing securities) including 454,256,289.24000000 with one dealer and 261,088,257.91000000 with another, illustrating substantial turnover through multiple counterparties.
The filing also notes that total commissions paid to an affiliated broker-dealer for the period were 0.00000000, and lists numerous custodians and service providers, giving investors transparency into the fund’s operational framework rather than its performance or returns.