CALAMOS STRATEGIC TOTAL RETURN FUND (CSQ) — Institutional Holders, Q2 2026

224 institutional investment managers reported a CSQ position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $801.2M. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

CSQ in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

18

Added to

84

Trimmed

48

Sold out

12

Biggest buyers

  1. RAYMOND JAMES FINANCIALAdded · +230,339 sh+$4.7M
  2. 1607 Capital PartnersAdded · +202,825 sh+$4.2M
  3. RIVERNORTH CAPITAL MANAGEMENTAdded · +179,071 sh+$3.7M
  4. J.W. COLE ADVISORSNew · +125,610 sh+$2.6M
  5. Karpus ManagementAdded · +107,581 sh+$2.2M

Biggest sellers

  1. Shaker Financial ServicesTrimmed · -448,880 sh-$9.2M
  2. READYSTATE ASSET MANAGEMENTSold out · -236,613 sh-$4.9M
  3. Logan Stone CapitalSold out · -130,383 sh-$2.7M
  4. Calamos AdvisorsSold out · -85,160 sh-$1.8M
  5. MORGAN STANLEYTrimmed · -67,478 sh-$1.4M

CSQ 13F holders ranked 1–100 of 224

Institutional investors reporting a position in CALAMOS STRATEGIC TOTAL RETURN FUND on SEC Form 13F-HR for Q2 2026, ranked by reported value.
InstitutionValueQoQ
BANK OF AMERICA#1 · 4,865,484 sh$100.0M+0.2%
MORGAN STANLEY#2 · 4,298,735 sh$88.4M-1.5%
UBS Group AG#3 · 3,937,493 sh$81.0M+0.7%
WELLS FARGO & COMPANY#4 · 3,045,129 sh$62.6M-0.6%
RAYMOND JAMES FINANCIAL#5 · 2,356,479 sh$48.4M+10.8%
ROYAL BANK OF CANADA#6 · 2,162,971 sh$44.5M+2.1%
Karpus Management#7 · 2,052,204 sh$42.2M+5.5%
LPL Financial#8 · 1,248,517 sh$25.7M+2.0%
Bensler#9 · 1,152,865 sh$23.7M+3.4%
McGowan Group Asset Management#10 · 787,259 sh$16.2M-0.9%
Cetera Investment Advisers#11 · 772,014 sh$15.9M-1.4%
Rockefeller Capital Management L.P.#12 · 748,412 sh$15.4M+5.4%
Advisors Asset Management#13 · 699,531 sh$14.4M+7.8%
1607 Capital Partners#14 · 635,466 sh$13.1M+46.9%
Stratos Wealth Partners, LTD.#15 · 527,617 sh$10.8M+0.3%
WILEY BROS.-AINTREE CAPITAL#16 · 501,570 sh$10.2M-9.7%
STIFEL FINANCIAL#17 · 412,706 sh$8.5M+6.2%
OSAIC#18 · 369,250 sh$7.6M+11.8%
RIVERNORTH CAPITAL MANAGEMENT#19 · 351,534 sh$7.2M+103.8%
GUGGENHEIM CAPITAL#20 · 338,003 sh$6.9M+4.1%
TRUIST FINANCIAL#21 · 315,627 sh$6.5M+2.4%
AMERIPRISE FINANCIAL#22 · 301,478 sh$6.2M+5.1%
Apollon Wealth Management#23 · 274,887 sh$5.7M-2.2%
Janney Montgomery Scott#24 · 237,208 sh$4.9M+7.3%
Smith Asset Management#25 · 226,606 sh$4.7M-1.4%
WOLVERINE ASSET MANAGEMENT#26 · 225,353 sh$4.6M+6.9%
ENVESTNET ASSET MANAGEMENT#27 · 195,505 sh$4.0M+33.0%
Sanctuary Advisors#28 · 166,343 sh$3.4M-0.2%
Cambridge Investment Research Advisors#29 · 164,163 sh$3.4M-1.2%
Shaker Financial Services#30 · 163,703 sh$3.4M-73.3%
PMG Family Office#31 · 162,340 sh$3.3M+0.7%
COMMONWEALTH EQUITY SERVICES#32 · 159,926 sh$3.3M+0.4%
Prairie Wealth Advisors#33 · 0 sh$3.2MNew
DAVENPORT#34 · 147,497 sh$3.0M-11.8%
World Investment Advisors#35 · 170,261 sh$2.9M-1.0%
Savant Capital#36 · 136,791 sh$2.8M+1.1%
Clearstead Advisors#37 · 133,571 sh$2.7M-2.0%
J.W. COLE ADVISORS#38 · 125,610 sh$2.6MNew
HighTower Advisors#39 · 121,577 sh$2.5M+1.2%
Steward Partners Investment Advisory#40 · 121,061 sh$2.5M-1.9%
FOUNDERS FINANCIAL SECURITIES#41 · 120,550 sh$2.5M+1.5%
Mariner#42 · 117,049 sh$2.4M+9.3%
Pointe Capital Management#43 · 115,602 sh$2.4M-6.8%
Aviance Capital Partners#44 · 98,505 sh$2.0M-0.3%
Kestra Advisory Services#45 · 93,995 sh$1.9M+7.2%
Meridian Wealth Advisors#46 · 85,722 sh$1.8M0.0%
Calamos Wealth Management#47 · 85,160 sh$1.8M0.0%
Private Advisor Group#48 · 84,798 sh$1.7M+3.5%
LAKE STREET PRIVATE WEALTH#49 · 84,348 sh$1.7M+13.6%
SRS Capital Advisors#50 · 80,528 sh$1.7MNew
CAPTRUST FINANCIAL ADVISORS#51 · 80,272 sh$1.7M-41.7%
OPPENHEIMER#52 · 72,256 sh$1.5M-1.1%
Snowden Capital Advisors#53 · 71,588 sh$1.5M+8.7%
Beacon Pointe Advisors#54 · 71,451 sh$1.5M+104.2%
FIFTH THIRD BANCORP#55 · 65,469 sh$1.3M-1.2%
PNC FINANCIAL SERVICES GROUP#56 · 65,425 sh$1.3M+3.4%
Mesirow Financial Investment Management#57 · 61,156 sh$1.3M+0.3%
CENTRAL#58 · 59,008 sh$1.2M-1.8%
HARBOUR INVESTMENTS#59 · 57,616 sh$1.2M0.0%
NewEdge Advisors#60 · 57,600 sh$1.2MNew
Invesco Ltd.#61 · 54,311 sh$1.1M-29.1%
Dakota Wealth Management#62 · 54,052 sh$1.1M+0.8%
PFG Investments#63 · 47,492 sh$976.4K+19.7%
David J Yvars Group#64 · 45,208 sh$923.8K+4.2%
Concurrent Investment Advisors#65 · 44,345 sh$911.7K+5.3%
Waverly Advisors#66 · 42,653 sh$876.9K-5.7%
Western Wealth Management#67 · 38,810 sh$797.9K0.0%
Palogic Value Management, L.P.#68 · 38,800 sh$797.7K0.0%
Brookstone Capital Management#69 · 38,658 sh$794.8K+36.4%
TrueMark Investments#70 · 35,665 sh$733.3K+7.1%
PW Nova Financial Services#71 · 35,485 sh$729.6K+0.2%
Aptus Capital Advisors#72 · 34,611 sh$711.6K+0.2%
Quad-Cities Investment Group#73 · 33,337 sh$685.4K+9.1%
Integrated Wealth Concepts#74 · 32,840 sh$675.2K+11.9%
QTR Family Wealth#75 · 32,408 sh$666.3K+0.1%
NWF Advisory Services#76 · 32,334 sh$664.8K+6.6%
Waterloo Capital, L.P.#77 · 32,122 sh$660.4KNew
GOLDMAN SACHS GROUP#78 · 32,032 sh$658.6K+1.2%
XTX Topco Ltd#79 · 31,619 sh$650.1KNew
WEALTH ENHANCEMENT ADVISORY SERVICES#80 · 31,007 sh$644.9K+13.2%
Pathstone#81 · 30,885 sh$635.0K0.0%
Advisory Advocates#82 · 30,574 sh$628.6K+0.8%
D.A. DAVIDSON#83 · 29,301 sh$602.4K0.0%
Summit Financial#84 · 29,230 sh$601.0K+37.6%
Wealthcare Advisory Partners#85 · 29,166 sh$599.7K+3.6%
Gryphon Financial Partners#86 · 28,982 sh$595.9K0.0%
Kovack Advisors#87 · 28,768 sh$593.2K-9.2%
Mezzasalma Advisors#88 · 26,800 sh$551.0K-0.9%
NATIONS FINANCIAL GROUP , /IA#89 · 26,662 sh$548.2K+8.2%
LOWE BROCKENBROUGH#90 · 26,637 sh$547.7K0.0%
DOLIVER ADVISORS#91 · 26,484 sh$544.5K0.0%
MGO ONE SEVEN#92 · 25,745 sh$529.3KNew
WCG Wealth Advisors#93 · 25,688 sh$528.1K0.0%
Baird Financial Group#94 · 24,878 sh$511.5K+8.6%
JANE STREET GROUP#95 · 24,775 sh$509.4K-29.6%
Creative Planning#96 · 23,961 sh$492.6KNew
Fairman Group#97 · 23,569 sh$484.6K0.0%
GUARDIAN WEALTH ADVISORS, / NC#98 · 22,822 sh$469.2K+0.3%
Uniting Wealth Partners#99 · 22,519 sh$463.0K-2.0%
Caprock Group#100 · 21,771 sh$447.6K+10.3%

Funds that sold out of CSQ in Q2 2026 (12)

Held CSQ at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held CSQ in Q1 2026 and reported no position in Q2 2026.
InstitutionValue in Q1 2026
READYSTATE ASSET MANAGEMENT236,613 sh$4.1M
Logan Stone Capital130,383 sh$2.2M
Calamos Advisors85,160 sh$1.5M
NINE MASTS CAPITAL Ltd27,663 sh$473.6K
Cascade Financial Partners18,723 sh$320.5K
Compass Planning Associates17,898 sh$306.4K
Norris Financial Group12,000 sh$205.4K
Virtu Financial11,084 sh$190.0K
Advisory Services Network8,354 sh$143.0K
Hilltop National Bank1,118 sh$19.1K
Rossby Financial, LCC486 sh$8.5K
Tower Research Capital (TRC)35 sh$599.00

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.