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CSQ

CALAMOS STRATEGIC TOTAL RETURN FUND

Actively managedEquityClosed-end fund
Holdings as of Apr 30, 2026Filed Jun 26, 2026

Actively managed U.S. stock closed-end fund

As of its 2026 Q2 report, CALAMOS STRATEGIC TOTAL RETURN FUND held 804 positions with $3.48B in net assets. Its ten largest holdings made up 42.4% of the fund. Over the 12 months to May 2026, CSQ returned 28.3%, with dividends reinvested. In 2026 Q3 it added 107 new positions and exited 91.

2026 Q2 holdings and allocationChanges are against the previous quarter, 2026 Q2Headline fees and returns use the CSQ share class
Expense ratio
—
Yearly cost, as a share of what you have invested
$3.48B
The whole fund, all share classes
804 holdings
42.4%in the top 10
Weight held in the ten largest holdings
Top 25 hold 60.6%
Return, 1 year · CSQ
+28.3%
With dividends, to May 2026
3 yr total +85.6% · 5 yr total +74.9%
What this fund is

CALAMOS STRATEGIC TOTAL RETURN FUND is actively managed U.S. equity closed-end fund.

What you own

per cent of the fund
CompanyWeightValue
7.38%
$256.95M
6.88%
$239.44M
6.71%
$233.57M
5.01%
$174.35M
4.92%
$171.39M
3.59%
$125.12M
2.43%
$84.58M
2.00%
$69.70M
1.83%
$63.61M
1.71%
$59.67M
Showing 1–10 of 804 · the top 10 are 42.44% of the fund, the top 25 are 60.64%

Reported price is the fund's own reported value divided by its own reported shares at 2026-04-30 — not a live quote, and not what the fund paid.

The 200 largest of 804 holdings, with the share counts as filed, open with a free account.

What the fund is made of

Percentages are of fund net assets. Rounding, liabilities and short positions can make totals differ from 100%.

136.65%
of net assets
Stocks98.73%
Bonds33.33%
Loans4.10%
Derivatives0.28%
2 smaller0.22%

Look-through blends 5 underlying funds; 0.0% of NAV was not looked through and stays direct-classified.

By sector

Information Technology
28.5%
Financials
10.4%
Consumer Discretionary
9.2%
Health Care
9.2%
11 other sectors
42.7%

How it has done

Total return, dividends reinvested · to May 2026

CSQ share class · total returns with dividends reinvested

1 year
+28.31%
3 years
+85.57%
Cumulative, not per year
5 years
+74.87%
Cumulative, not per year
Largest decline in 3 years
-10.49%
From a previous high to a later low
Cumulative return, last three years· Aug 2023 – May 2026

Volatility over the last 12 months: 19.80%. Past returns are a record, not a forecast.

Jun 2026 and Jul 2026 have been filed since the trailing figures were struck, so they are not in the table above or the curve — every figure here shares one cut-off, which is what makes them comparable with other funds.

Fees & fund details

CALAMOS STRATEGIC TOTAL RETURN FUND is an actively managed U.S. equity closed-end fund. 20% of CSQ’s stock holdings are in companies whose revenue grew in the top quartile of U.S. companies over the last five fiscal years (covering 94% of the fund’s equity).

Asset class
Equity
Region
United States
Management
Actively managed
Fund type
Closed-end fund

This fund files no prospectus profile. Unit investment trusts and closed-end funds register on forms that carry no objective or fee tagging, and some fund families file without it — a gap in what was filed, not a fund without an objective or without fees.

Classified from what the fund holds, not from its name · 2026 Q2. The summary is a paraphrase of the prospectus; the objective is verbatim.

What changed this quarter

2026 Q3 vs 2026 Q2

Positions that entered or left the fund since its previous filing. Positions that were only resized are not listed.

107 new· the largest 7

CYBERARK SOFTWARE LTD
DOORDASH INC
CLOUDFLARE INC
ETSY INC
ALPHABET INC
2 holdings

91 exited· the largest 8

ADVANCED ENERGY IND
MKS INC
DOORDASH INC
CYBERARK SOFTWARE LTD
CLOUDFLARE INC
STMICROELECTRONICS NV
AKAMAI TECHNOLOGIES INC
MACOM TECH SOLUTIONS

Debt profile

What this fund holds — value-weighted across its bond and securitized long positions · as of 2026-04-30

Avg coupon
3.36%
Avg maturity
5.07 yr
Coupon type

Share of the fund's debt by how its coupon behaves — the fact that decides whether a rate move reaches this portfolio at all.

10%
floating
Fixed rate69.2%
Zero-coupon or unclassified21.1%
Floating rate9.6%
Maturity ladder

Share of the fund's debt value in each maturity band, shortest first.

<1y10y+
<1y1.2%
1-3y25.4%
3-5y41.9%
5-10y27.9%
10y+3.6%
Flagged holdings
Defaulted: 0.03% · $0.43M · 6 positions
In arrears: none reported
Paid in kind: 0.22% · $2.72M · 4 positions

These three overlap — one holding can be in arrears and paying in kind at once — so they are shown separately and never summed.

Risk profile

Interest-rate and credit-spread sensitivity, both in years · as of 2026Q2

More of this fund’s sensitivity sits in credit spreads than in interest rates — a rate rally that comes with a credit selloff works against it.

0.68 yr
approx. move per 100bp
1.06 yr
approx. move per 100bp
If rates and spreads both rise 100bp

Where the loss would come from. The two shocks are the same size, so this is the balance of the fund's two sensitivities rather than a bet on one moving more.

≈ -1.5%
of value
Credit spreads61%
Interest rates39%

Filers report the impact of a 0.01% move only, so the total is our own scaling of that one number and overstates the loss on most bonds — read it as approximate, never as precise. The two sensitivities overlap rather than add up: they measure the same positions against different shocks, which is why the durations above are shown side by side and never summed.

Credit risk by quality

Share of the fund's spread duration carried by each credit tier.

+1.06
yrs total
High yield+0.85 yr
Investment grade+0.21 yr
Where the risk sits on the curve

Share of duration at each point, shortest first. This filer signs its rate and credit disclosures differently; the direction shown follows its interest-rate filing, and a negative reading is the least-supported figure here.

Interest rate0.68 yr total
3 mo30 yr
3 mo0.01 yr1%
1 yr0.17 yr24%
5 yr0.42 yr62%
10 yr0.07 yr11%
30 yr0.01 yr2%
Credit spread1.06 yr total
3 mo30 yr
3 mo0.02 yr2%
1 yr0.32 yr30%
5 yr0.62 yr58%
10 yr0.09 yr9%
30 yr0.02 yr2%

The two bands measure the same positions against different shocks and do not add — a Treasury carries rate duration and no spread duration, a floating-rate credit the reverse. Rate tenors are also summed across every currency the fund discloses.

Show the numbers
TenorRate yrsIG yrsHY yrsIG $/bpHY $/bp
3 mo+0.01+0.00+0.02$434$5.4k
1 yr+0.17+0.08+0.24$28.3k$82.6k
5 yr+0.42+0.10+0.51$36.3k$178.3k
10 yr+0.07+0.02+0.07$7.6k$24.7k
30 yr+0.01+0.01+0.01$2.0k$3.6k

Dollar change per 1bp of spread movement, as filed and sign-anchored. A blank cell was not filed; a zero was.

A newer credit-spread reading (2026Q3) is on file. This page holds one quarter across every figure on it, so that one appears here next quarter.

Connected research

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