Calamos Strategic Total Return Fund
US ˙ NasdaqGS ˙ US1281251017

SecurityCSQ / Calamos Strategic Total Return Fund
InstitutionCommonwealth Equity Services, Llc
Latest Disclosed Ownership165,014 shares
Latest Disclosed Value $ 3,168,265
Commonwealth Equity Services, Llc reports 12.67% decrease in ownership of CSQ / Calamos Strategic Total Return Fund

On February 12, 2026 - Commonwealth Equity Services, Llc filed a 13F-HR form disclosing ownership of 165,014 shares of Calamos Strategic Total Return Fund (US:CSQ) valued at $3,168,269 USD as of December 31, 2025. The entity filed a previous 13F-HR on October 22, 2025 disclosing 188,947 shares of Calamos Strategic Total Return Fund. This represents a change in shares of -12.67% during the quarter. The current value of the position is $3,407,539 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)
2026-02-12 2025-12-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 165,014 -23,933 -12.67 3,168 105,500.00
2025-10-22 2025-09-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 188,947 -3,490 -1.81 4 0.00 0.0047
2025-08-06 2025-06-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 192,437 8,769 4.77 4 50.00 0.0046
2025-05-09 2025-03-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 183,668 2,154 1.19 3 -33.33 0.0042
2025-02-10 2024-12-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 181,514 -3,638 -1.96 3 0.00 0.0047
2024-10-18 2024-09-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 185,152 -4,247 -2.24 3 0.00 0.0049
2024-07-31 2024-06-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 189,399 2,238 1.20 3 0.00 0.0050
2024-04-29 2024-03-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 187,161 1,642 0.89 3 50.00 0.0051
2024-02-06 2023-12-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 185,519 -8,453 -4.36 3 0.00 0.0051
2023-10-23 2023-09-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 193,972 -10,299 -5.04 3 -33.33 0.0057
2023-08-10 2023-06-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 204,271 -7,139 -3.38 3 50.00 0.0061
2023-05-11 2023-03-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 211,410 -22,692 -9.69 3 -33.33 0.0062
2023-02-07 2022-12-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 234,102 12,064 5.43 3 -99.89 0.0076
2022-11-14 2022-09-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 222,038 -6,052 -2.65 2,775 -7.19 0.0072
2022-07-19 2022-06-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 228,090 -127,799 -35.91 2,990 -52.07 0.0078
2022-05-04 2022-03-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 355,889 1,208 0.34 6,238 -8.81 0.0143
2022-01-31 2021-12-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 354,681 -8,081 -2.23 6,841 6.43 0.0154
2021-10-29 2021-09-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 362,762 103,543 39.94 6,428 36.33 0.0161
2021-08-11 2021-06-30 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 259,219 9,605 3.85 4,715 9.65 0.0120
2021-05-04 2021-03-31 13F CALAMOS STRATEGIC TOTAL RETU COM SH BEN INT 128125101 249,614 5,304 2.17 4,300 11.49 0.0122
2021-02-11 2020-12-31 13F CALAMOS STRATEGIC TOTL RETN COM SH BEN INT 128125101 244,310 1,695 0.70 3,857 18.13 0.0116
2020-11-05 2020-09-30 13F CALAMOS STRATEGIC TOTL RETN COM SH BEN INT 128125101 242,615 2,122 0.88 3,265 9.23 0.0112
2020-08-12 2020-06-30 13F CALAMOS STRATEGIC TOTL RETN COM SH BEN INT 128125101 240,493 9,052 3.91 2,989 32.20 0.0113
2020-05-11 2020-03-31 13F CALAMOS STRATEGIC TOTL RETN COM SH BEN INT 128125101 231,441 -28,616 -11.00 2,261 -36.06 0.0105
2020-02-05 2019-12-31 13F CALAMOS STRATEGIC TOTL RETN COM SH BEN INT 128125101 260,057 24,853 10.57 3,536 18.22 0.0135
2019-10-30 2019-09-30 13F CALAMOS STRATEGIC TOTL RETN COM SH BEN INT 128125101 235,204 4,271 1.85 2,991 1.53 0.0128
2019-07-19 2019-06-30 13F CALAMOS STRATEGIC TOTL RETN COM SH BEN INT 128125101 230,933 -1,401 -0.60 2,946 2.36 0.0130
2019-05-13 2019-03-31 13F CALAMOS STRATEGIC TOTL RETN COM SH BEN INT 128125101 232,334 -27,126 -10.45 2,878 4.77 0.0133
2019-02-11 2018-12-31 13F CALAMOS STRATEGIC TOTL RETN COM SH BEN INT 128125101 259,460 -2,290 -0.87 2,747 -21.89 0.0146
2018-11-06 2018-09-30 13F CALAMOS STRATEGIC TOTL RETN COM SH BEN INT 128125101 261,750 7,834 3.09 3,517 9.33 0.0168
2018-07-31 2018-06-30 13F CALAMOS STRATEGIC TOTL RETN COM SH BEN INT 128125101 253,916 18,169 7.71 3,217 15.39 0.0168
2018-05-14 2018-03-31 13F CALAMOS STRATEGIC TOTL RETN COM SH BEN INT 128125101 235,747 -1,292 -0.55 2,788 -2.62 0.0151
2018-02-12 2017-12-31 13F CALAMOS STRATEGIC TOTL RETN COM SH BEN INT 128125101 237,039 237,039 2,863 0.0156
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.