Calamos Strategic Total Return Fund
US ˙ NasdaqGS ˙ US1281251017

SecurityCSQ / Calamos Strategic Total Return Fund
InstitutionBensler, LLC
Latest Disclosed Ownership1,114,699 shares
Latest Disclosed Value $ 19,083,643
Bensler, LLC reports 2.54% increase in ownership of CSQ / Calamos Strategic Total Return Fund

On May 1, 2026 - Bensler, LLC filed a 13F-HR form disclosing ownership of 1,114,699 shares of Calamos Strategic Total Return Fund (US:CSQ) valued at $19,083,647 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 1,087,101 shares of Calamos Strategic Total Return Fund. This represents a change in shares of 2.54% during the quarter. The current value of the position is $22,862,476 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-01 2026-03-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 1,114,699 27,598 2.54 19,084 -8.57 1.9697
2026-02-04 2025-12-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 1,087,101 79,519 7.89 20,872 7.39 2.0897
2025-11-03 2025-09-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 1,007,582 13,106 1.32 19,436 7.15 2.0204
2025-08-06 2025-06-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 994,476 1,720 0.17 18,139 12.93 2.0292
2025-04-16 2025-03-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 992,756 28,416 2.95 16,063 -5.95 2.0110
2025-01-22 2024-12-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 964,340 17,966 1.90 17,078 4.01 2.0302
2024-10-31 2024-09-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 946,374 11,991 1.28 16,420 4.35 2.0709
2024-07-26 2024-06-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 934,383 1,530 0.16 15,735 3.05 2.1171
2024-04-30 2024-03-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 932,853 49,792 5.64 15,271 16.29 2.2130
2024-01-22 2023-12-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 883,061 65,291 7.98 13,131 14.12 2.1786
2023-10-25 2023-09-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 817,770 26,114 3.30 11,506 -1.46 2.2145
2023-07-20 2023-06-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 791,656 8,710 1.11 11,677 6.52 2.2175
2023-04-27 2023-03-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 782,946 7,284 0.94 10,961 5.30 2.2134
2023-02-16 2022-12-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 775,662 11,175 1.46 10,409 8.93 2.3142
2023-02-16 2022-09-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 764,487 11,909 1.58 9,556 -3.14 2.2770
2023-02-16 2022-06-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 752,578 16,020 2.17 9,866 -23.58 2.3493
2023-02-16 2022-03-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 736,558 27,322 3.85 12,912 -5.63 2.7171
2023-02-16 2021-12-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 709,236 709,236 13,681 3.8106
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.