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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, Q2 2025

Institutional positions in Calamos Strategic Total Return Fund as of Jun 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
202
+4 vs. Q1 2025
Shares held
35.3M
+877.3K (+2.5%) vs. Q1 2025
Total value
$644.5M
+$86.9M (+15.6%) vs. Q1 2025
New holders
17
78 more added
Sold out
13
53 more reduced

3 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 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 holdersQ2 2025: 202 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 heldQ2 2025: $644.5M
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, Q2 2025

Shares, value and share of portfolio for each institution holding Calamos Strategic Total Return Fund; share changes are against Q1 2025.

Institutions holding CSQ in Q2 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Canal Capital Management, LLC19,135$349.0K0.06%+412+2.2%Added
Cascade Financial Partners, LLC18,723$341.5K0.04%00.0%Unchanged
EverSource Wealth Advisors, LLC18,644$340.1K0.02%+22+0.1%Added
San Luis Wealth Advisors LLC18,649$340.0K0.07%−1,443−7.2%Reduced
Bay Capital Advisors, LLC18,379$335.2K0.26%−4,400−19.3%Reduced
Modern Wealth Management, LLC18,300$333.8K0.01%−468−2.5%Reduced
Compass Planning Associates Inc17,898$326.5K0.30%00.0%Unchanged
Sequoia Financial Advisors, LLC17,271$315.0K0.00%−3,300−16.0%Reduced
Dynamic Advisor Solutions LLC17,120$312.3K0.01%+374+2.2%Added
Jane Street Group, LLC17,089$311.7K0.00%+3,952+30.1%Added
Stephens Inc16,866$307.6K0.00%−394−2.3%Reduced
Institute for Wealth Management, LLC.16,602$302.8K0.03%−414−2.4%Reduced
Founders Financial Alliance, LLC16,441$299.9K0.07%+1,978+13.7%Added
Wiley Bros.-Aintree Capital, LLC16,187$295.3K0.00%+842+5.5%Added
Live Oak Private Wealth LLC16,179$295.1K0.04%00.0%Unchanged
Lifeworks Advisors, LLC15,956$291.0K0.04%−13,663−46.1%Reduced
Calton & Associates, Inc.15,923$290.4K0.05%+3,801+31.4%Added
CI Private Wealth, LLC15,772$287.7K0.00%+1,576+11.1%Added
Silverlake Wealth Management LLC15,698$286.3K0.08%+435+2.9%Added
NBC Securities, Inc.15,093$275.0K0.02%+90+0.6%Added
Consolidated Planning Corp15,071$274.9K0.03%−2,431−13.9%Reduced
International Assets Investment Management, LLC15,066$274.8K0.02%00.0%Unchanged
Cresset Asset Management, LLC15,000$273.6K0.00%−6,037−28.7%Reduced
SMH Capital Advisors Inc14,922$272.2K0.62%−210−1.4%Reduced
TFG Advisers LLC14,690$267.9K0.09%+61+0.4%Added
Insigneo Advisory Services, LLC13,924$254.0K0.02%+750+5.7%Added
MML Investors Services, LLC13,744$251.0K0.00%+678+5.2%Added
Fundamentun, LLC13,676$249.5K0.01%+2,596+23.4%Added
Kellett Schaffner Wealth Advisors LLC13,477$245.8K0.16%00.0%Unchanged
Mercer Global Advisors Inc13,272$242.1K0.00%−5,519−29.4%Reduced
Western Wealth Management, LLC12,463$227.3K0.01%00.0%Unchanged
Chicago Partners Investment Group LLC12,236$225.1K0.01%+110+0.9%Added
Atria Wealth Solutions, Inc.12,174$222.1K0.01%−28,710−70.2%Reduced
Lantz Financial LLC12,000$218.9K0.05%−2,400−16.7%Reduced
Norris Financial Group, LLC12,000$218.9K0.09%00.0%Unchanged
Lokken Investment Group LLC11,812$215.5K0.08%−959−7.5%Reduced
Newbridge Financial Services Group, Inc.11,728$213.9K0.03%+11,728New
IHT Wealth Management, LLC11,551$210.7K0.01%−1,053−8.4%Reduced
LaSalle St. Investment Advisors, LLC11,549$210.0K0.06%+70+0.6%Added
Private Wealth Group, LLC11,404$208.0K0.11%00.0%Unchanged
Confluence Wealth Services, Inc.11,074$202.0K0.01%+275+2.5%Added
Advisory Services Network, LLC10,955$200.9K0.00%−18,242−62.5%Reduced
Beacon Pointe Advisors, LLC10,329$188.4K0.00%+169+1.7%Added
Creative Planning10,250$187.0K0.00%+10,250New
Private Trust Co NA10,185$185.8K0.02%00.0%Unchanged
Kayne Anderson Rudnick Investment Management LLC10,063$183.5K0.00%00.0%Unchanged
Ameritas Advisory Services, LLC10,001$182.4K0.01%00.0%Unchanged
US Bancorp9,586$174.8K0.00%00.0%Unchanged
IFP Advisors, Inc8,273$150.9K0.00%00.0%Unchanged
CWM, LLC7,909$144.0K0.00%+5,629+246.9%Added
Huntington National Bank–$131.7K0.00%––
Global Retirement Partners, LLC6,873$125.4K0.00%+6,873New
CoreCap Advisors, LLC6,500$118.6K0.00%−200−3.0%Reduced
Northwestern Mutual Wealth Management Co6,324$115.3K0.00%+3,184+101.4%Added
Barrett & Company, Inc.6,249$114.0K0.04%00.0%Unchanged
Allworth Financial LP6,235$113.7K0.00%+736+13.4%Added
Trust Co of Vermont5,289$96.5K0.00%+5,289New
Parallel Advisors, LLC5,196$94.8K0.00%+3,459+199.1%Added
Delta Asset Management LLC5,105$93.1K0.01%00.0%Unchanged
Rothschild Investment LLC5,000$91.2K0.01%00.0%Unchanged
MAI Capital Management4,977$90.8K0.00%−500−9.1%Reduced
Farther Finance Advisors, LLC3,869$70.6K0.00%+1,700+78.4%Added
JPMorgan Chase & Co3,428$62.5K0.00%00.0%Unchanged
GHP Investment Advisors, Inc.3,400$62.0K0.00%+3,400New
Wolff Wiese Magana LLC3,090$56.4K0.03%00.0%Unchanged
Eastern Bank3,060$55.8K0.00%00.0%Unchanged
Truvestments Capital LLC2,500$45.6K0.01%+46+1.9%Added
Smartleaf Asset Management LLC2,502$45.4K0.00%−9−0.4%Reduced
Dunhill Financial, LLC2,428$44.3K0.01%+2,428New
Asset Dedication, LLC2,400$43.8K0.00%00.0%Unchanged
Evolution Wealth Management Inc.2,206$40.2K0.05%+2,206New
N.E.W. Advisory Services LLC2,200$40.1K0.00%−1,327−37.6%Reduced
Arlington Trust Co LLC2,128$38.8K0.01%+2,128New
Westside Investment Management, Inc.1,754$32.0K0.01%00.0%Unchanged
Pacific Center for Financial Services1,692$30.9K0.01%00.0%Unchanged
AdvisorNet Financial, Inc1,600$29.2K0.00%00.0%Unchanged
ORG Partners LLC1,500$27.5K0.01%00.0%Unchanged
Princeton Global Asset Management LLC1,200$21.9K0.00%+1,200New
Geneos Wealth Management Inc.1,110$20.2K0.00%00.0%Unchanged
Future Financial Wealth Managment LLC1,100$20.1K0.01%00.0%Unchanged
First Pacific Financial1,100$20.1K0.00%+1,100New
Fortis Group Advisors, LLC1,000$18.2K0.00%00.0%Unchanged
Assetmark, Inc991$18.1K0.00%+816+466.3%Added
Armstrong Advisory Group, Inc805$14.7K0.00%+805New
Transce3nd, LLC707$12.9K0.01%00.0%Unchanged
Salomon & Ludwin, LLC686$12.5K0.00%00.0%Unchanged
Fairscale Capital, LLC500$9.17K0.01%00.0%Unchanged
Boyd Watterson Asset Management LLC500$9.12K0.00%00.0%Unchanged
Mark Sheptoff Financial Planning, LLC436$7.95K0.00%−436−50.0%Reduced
North Star Investment Management Corp.400$7.30K0.00%00.0%Unchanged
Beaird Harris Wealth Management, LLC325$5.93K0.00%00.0%Unchanged
Bartlett & Co. Wealth Management LLC270$4.92K0.00%00.0%Unchanged
Key Financial Inc250$4.56K0.00%00.0%Unchanged
City State Bank200$3.65K0.00%00.0%Unchanged
SRS Capital Advisors, Inc.184$3.36K0.00%00.0%Unchanged
SOA Wealth Advisors, LLC.173$3.16K0.00%+3+1.8%Added
FWL Investment Management, LLC115$2.10K0.00%00.0%Unchanged
Tower Research Capital LLC (TRC)24$4380.00%+22+1,100.0%Added
Tidemark, LLC17$3100.00%00.0%Unchanged
Golden State Wealth Management, LLC6$1090.00%00.0%Unchanged