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CSQ · Calamos Strategic Total Return Fund · Holdings

Track CSQ — free
$20.51 -0.09 (-0.44%) At close · Oct 7
Market Cap
$3.27B
Shares
160.37M
Volume · Oct 7 165.3K Avg daily vol (3M) 185.55K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 224
Total Value: $801,735,131
Total Shares: 38,841,016
Showing 1–100 of 224 holdings by value · page 1 of 3

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 224 13F filers
Top Holder
12.5%
Sep 2023 → Jun 2026 · range 12.3% – 15.3%
of institutional value
Top 5
47.4%
Sep 2023 → Jun 2026 · range 46.6% – 56.1%
of institutional value
Top 10
66.4%
Sep 2023 → Jun 2026 · range 65.7% – 72.1%
of institutional value
HHI
585
Sep 2023 → Jun 2026 · range 571 – 770
Broadly held
Showing 100 of 224
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1275214 CUSIP 128125101 13F (30d) 6 filings 6 filers Investor relations