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Calamos Strategic Total Return Fund

CSQ
Exchange
Nasdaq
SEC CIK
0001275214

No open-market purchases or sales by Calamos Strategic Total Return Fund insiders were filed in the last 90 days; 223 institutions reported holding it in 13F filings for Q2 2026, worth $801.0M in total; no superinvestor holds it.

13F holders, Q3 2025

Institutional positions in Calamos Strategic Total Return Fund as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
209
+11 vs. Q2 2025
Shares held
37.4M
+2.16M (+6.1%) vs. Q2 2025
Total value
$721.5M
+$78.5M (+12.2%) vs. Q2 2025
New holders
23
67 more added
Sold out
12
47 more reduced

4 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting CSQ on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ3 2025: 209 institutions
Q1 2021: 149 institutionsQ2 2021: 148 institutionsQ3 2021: 144 institutionsQ4 2021: 169 institutionsQ1 2022: 159 institutionsQ2 2022: 153 institutionsQ3 2022: 157 institutionsQ4 2022: 164 institutionsQ1 2023: 169 institutionsQ2 2023: 160 institutionsQ3 2023: 168 institutionsQ4 2023: 173 institutionsQ1 2024: 177 institutionsQ2 2024: 189 institutionsQ3 2024: 190 institutionsQ4 2024: 203 institutionsQ1 2025: 201 institutionsQ2 2025: 202 institutionsQ3 2025: 209 institutionsQ4 2025: 216 institutionsQ1 2026: 219 institutionsQ2 2026: 223 institutions
Value heldQ3 2025: $721.5M
Q1 2021: $425.1MQ2 2021: $460.4MQ3 2021: $459.6MQ4 2021: $523.2MQ1 2022: $471.3MQ2 2022: $366.2MQ3 2022: $357.6MQ4 2022: $389.2MQ1 2023: $410.4MQ2 2023: $437.1MQ3 2023: $422.6MQ4 2023: $453.9MQ1 2024: $513.6MQ2 2024: $544.3MQ3 2024: $573.8MQ4 2024: $603.7MQ1 2025: $558.1MQ2 2025: $644.5MQ3 2025: $721.5MQ4 2025: $743.6MQ1 2026: $663.4MQ2 2026: $801.0M
Institutions holding CSQ and their total value by quarter
QuarterHoldersValue
Q2 2026223$801.0M
Q1 2026219$663.4M
Q4 2025216$743.6M
Q3 2025209$721.5M
Q2 2025202$644.5M
Q1 2025201$558.1M
Q4 2024203$603.7M
Q3 2024190$573.8M
Q2 2024189$544.3M
Q1 2024177$513.6M
Q4 2023173$453.9M
Q3 2023168$422.6M
Q2 2023160$437.1M
Q1 2023169$410.4M
Q4 2022164$389.2M
Q3 2022157$357.6M
Q2 2022153$366.2M
Q1 2022159$471.3M
Q4 2021169$523.2M
Q3 2021144$459.6M
Q2 2021148$460.4M
Q1 2021149$425.1M

Institutions, Q3 2025

Shares, value and share of portfolio for each institution holding Calamos Strategic Total Return Fund; share changes are against Q2 2025.

Institutions holding CSQ in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
CAPROCK Group, Inc.19,739$367.5K0.01%+19,739New
Dana Investment Advisors, Inc.18,787$362.4K0.01%−617−3.2%Reduced
Cascade Financial Partners, LLC18,723$361.2K0.04%00.0%Unchanged
EverSource Wealth Advisors, LLC18,664$360.0K0.01%+20+0.1%Added
San Luis Wealth Advisors LLC18,649$359.7K0.06%00.0%Unchanged
Mount Yale Investment Advisors, LLC18,605$358.9K0.03%+18,605New
Strategies Wealth Advisors, LLC18,562$358.1K0.04%−4,900−20.9%Reduced
Empower Advisory Group, LLC18,409$355.1K0.00%+18,409New
Canal Capital Management, LLC18,384$354.6K0.05%−751−3.9%Reduced
Modern Wealth Management, LLC18,300$353.0K0.01%00.0%Unchanged
CI Private Wealth, LLC18,072$348.6K0.00%+2,300+14.6%Added
Bay Capital Advisors, LLC18,028$347.8K0.23%−351−1.9%Reduced
Compass Planning Associates Inc17,898$345.3K0.32%00.0%Unchanged
Susquehanna International Group, LLP17,663$340.7K0.00%−14,816−45.6%Reduced
Sequoia Financial Advisors, LLC17,271$333.2K0.00%00.0%Unchanged
Dynamic Advisor Solutions LLC17,091$329.7K0.01%−29−0.2%Reduced
Stephens Inc16,866$325.3K0.00%00.0%Unchanged
Founders Financial Alliance, LLC16,510$318.5K0.06%+69+0.4%Added
Live Oak Private Wealth LLC16,179$312.1K0.04%00.0%Unchanged
Calton & Associates, Inc.16,105$310.7K0.05%+182+1.1%Added
Lifeworks Advisors, LLC15,956$307.8K0.04%00.0%Unchanged
Silverlake Wealth Management LLC15,754$303.9K0.07%+56+0.4%Added
Institute for Wealth Management, LLC.15,597$300.9K0.03%−1,005−6.1%Reduced
HRT Financial LP15,538$299.0K0.00%+15,538New
NBC Securities, Inc.15,140$292.1K0.02%+47+0.3%Added
SMH Capital Advisors Inc15,081$291.1K0.59%+159+1.1%Added
Cresset Asset Management, LLC15,000$289.4K0.00%00.0%Unchanged
Walleye Capital LLC14,595$281.5K0.00%+14,595New
Lowe Brockenbrough & Co Inc14,505$279.8K0.01%+14,505New
International Assets Investment Management, LLC15,066$275.9K0.02%00.0%Unchanged
Fundamentun, LLC13,863$267.4K0.01%+187+1.4%Added
MML Investors Services, LLC13,805$266.3K0.00%+61+0.4%Added
Consolidated Planning Corp13,782$265.9K0.03%−1,289−8.6%Reduced
Moseley Investment Management Inc13,775$265.7K0.08%+13,775New
Lantz Financial LLC13,538$261.1K0.06%+1,538+12.8%Added
Kellett Schaffner Wealth Advisors LLC13,477$260.0K0.16%00.0%Unchanged
Insigneo Advisory Services, LLC13,174$254.1K0.02%−750−5.4%Reduced
Western Wealth Management, LLC12,463$240.4K0.01%00.0%Unchanged
Chicago Partners Investment Group LLC12,340$238.7K0.01%+104+0.8%Added
Norris Financial Group, LLC12,000$231.5K0.08%00.0%Unchanged
Ashton Thomas Private Wealth, LLC11,960$230.7K0.01%+11,960New
Lokken Investment Group LLC11,812$227.9K0.08%00.0%Unchanged
Newbridge Financial Services Group, Inc.11,728$226.2K0.03%00.0%Unchanged
LaSalle St. Investment Advisors, LLC11,727$226.0K0.04%+178+1.5%Added
IHT Wealth Management, LLC11,551$222.8K0.01%00.0%Unchanged
Private Wealth Group, LLC11,404$220.0K0.11%00.0%Unchanged
Confluence Wealth Services, Inc.11,102$214.2K0.01%+28+0.3%Added
Vestmark Advisory Solutions, Inc.11,000$212.2K0.00%+11,000New
Advisory Services Network, LLC10,955$211.3K0.00%00.0%Unchanged
Mercer Global Advisors Inc10,834$209.0K0.00%−2,438−18.4%Reduced
Continuum Advisory, LLC10,407$200.8K0.02%+10,407New
Kayne Anderson Rudnick Investment Management LLC10,063$194.1K0.00%00.0%Unchanged
Private Trust Co NA10,034$193.6K0.02%−151−1.5%Reduced
Ameritas Advisory Services, LLC10,001$192.9K0.01%00.0%Unchanged
US Bancorp9,586$184.9K0.00%00.0%Unchanged
Huntington National Bank–$168.5K0.00%––
IFP Advisors, Inc8,273$159.6K0.00%00.0%Unchanged
CWM, LLC7,909$153.0K0.00%00.0%Unchanged
Global Retirement Partners, LLC6,939$133.8K0.00%+66+1.0%Added
CoreCap Advisors, LLC6,500$125.4K0.00%00.0%Unchanged
Northwestern Mutual Wealth Management Co6,335$122.2K0.00%+11+0.2%Added
Barrett & Company, Inc.6,249$120.5K0.04%00.0%Unchanged
Parallel Advisors, LLC5,874$113.3K0.00%+678+13.0%Added
Allworth Financial LP5,501$106.1K0.00%−734−11.8%Reduced
Delta Asset Management LLC5,105$98.5K0.01%00.0%Unchanged
Rothschild Investment LLC5,000$96.5K0.01%00.0%Unchanged
MAI Capital Management4,977$96.0K0.00%00.0%Unchanged
CX Institutional4,496$87.0K0.00%+4,496New
Farther Finance Advisors, LLC3,869$74.6K0.00%00.0%Unchanged
JPMorgan Chase & Co3,678$70.9K0.00%+250+7.3%Added
Wolff Wiese Magana LLC3,090$59.6K0.03%00.0%Unchanged
Eastern Bank3,060$59.0K0.00%00.0%Unchanged
Truvestments Capital LLC2,541$49.0K0.01%+41+1.6%Added
Smartleaf Asset Management LLC2,502$48.1K0.00%00.0%Unchanged
Dunhill Financial, LLC2,428$46.8K0.01%00.0%Unchanged
Asset Dedication, LLC2,400$46.3K0.00%00.0%Unchanged
N.E.W. Advisory Services LLC2,200$42.4K0.00%00.0%Unchanged
Arlington Trust Co LLC2,128$41.0K0.01%00.0%Unchanged
Westside Investment Management, Inc.1,754$33.8K0.01%00.0%Unchanged
Pacific Center for Financial Services1,692$32.6K0.01%00.0%Unchanged
AdvisorNet Financial, Inc1,600$30.9K0.00%00.0%Unchanged
ORG Partners LLC1,500$28.9K0.01%00.0%Unchanged
Ronald Blue Trust, Inc.1,298$25.0K0.00%+1,298New
Princeton Global Asset Management LLC1,200$23.1K0.00%00.0%Unchanged
Wealthspire Advisors, LLC1,154$22.3K0.00%+1,154New
Hilltop National Bank1,118$21.6K0.01%+1,118New
First Pacific Financial1,112$21.4K0.00%+12+1.1%Added
Geneos Wealth Management Inc.1,110$21.4K0.00%00.0%Unchanged
Future Financial Wealth Managment LLC1,100$21.2K0.01%00.0%Unchanged
Quent Capital, LLC1,027$19.8K0.00%+1,027New
Assetmark, Inc1,021$19.7K0.00%+30+3.0%Added
Fortis Group Advisors, LLC1,000$19.3K0.00%00.0%Unchanged
Armstrong Advisory Group, Inc818$15.8K0.00%+13+1.6%Added
Salomon & Ludwin, LLC686$13.2K0.00%00.0%Unchanged
Financial Life Planners513$9.90K0.01%+513New
Fairscale Capital, LLC500$9.64K0.01%00.0%Unchanged
Boyd Watterson Asset Management LLC500$9.64K0.00%00.0%Unchanged
Mark Sheptoff Financial Planning, LLC436$8.41K0.00%00.0%Unchanged
Evolution Wealth Management Inc.410$7.91K0.01%−1,796−81.4%Reduced
North Star Investment Management Corp.400$7.72K0.00%00.0%Unchanged