CHI · Calamos Convertible Opportunities & Income Fund · Holdings

$11.25 +0.15 (+1.35%) At close · Oct 27

Market Cap

$909.80M

80.87M

Volume · Oct 27 130.61K Avg daily vol (3M) 163.01K

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.

Use institutional holdings through the 13F API or MCP → See every holder of CHI: 13F, 13D and 13G, insiders and funds →

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.

Quarter:

Holders: 137

Total Value: $251,724,573

Total Shares: 18,940,736

Showing 1–100 of 137 holdings by value · page 1 of 2

Institutional Ownership Trend

27 quarters

Holder Concentration

Across 138 13F filers

Top Holder

15.3%

of institutional value

Top 5

50.3%

of institutional value

Top 10

67.1%

of institutional value

HHI

662

Broadly held

Who Holds CHI

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 135 filers, like-for-like change +4.0%; actively managed books +3.6%; index-like books +8.9%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	22.5%	77	+0.7%	8	8
Adviser	4.3%	4	+2.7%	0	0
Bank	38.3%	7	+6.5%	0	0
Broker-dealer	3.7%	1	+4.0%	0	0
Holding company	10.0%	3	+9.9%	0	0
Unknown	21.2%	43	+0.8%	4	4

Style	Share	Filers	Change	New	Exited
Index-like	8.5%	2	+8.9%	0	0
Systematic-like	0.1%	1	new	1	0
Concentrated	6.0%	26	-18.3%	5	5
Diversified active	85.4%	106	+5.2%	6	7
Not measured	0.0%	0	—	0	0
Unknown	0.0%	0	—	0	0

Turnover	Share	Filers	Change	New	Exited
Low turnover	81.4%	103	+5.0%	10	7
Medium turnover	16.7%	20	+0.4%	1	3
High turnover	0.1%	1	+33.3%	1	1
Unknown	1.8%	11	-9.8%	0	1
Not measured	0.0%	0	—	0	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	1.3%	8	+2.6%	1	1
Medium horizon	8.3%	28	-7.2%	3	0
Long horizon	90.3%	97	+5.3%	7	10
Unknown	0.1%	2	-40.4%	1	1
Not measured	0.0%	0	—	0	0

13F book size	Share	Filers	Change	New	Exited
Under $1B	9.3%	41	-10.0%	3	6
$1B to $10B	9.8%	46	+11.5%	7	3
$10B to $100B	23.9%	31	+3.0%	1	0
$100B or more	57.0%	17	+5.8%	1	3
Not measured	0.0%	0	—	0	0

Client base	Share	Filers	Change	New	Exited
Individuals and high net worth	19.3%	74	-3.8%	8	7
Registered funds and BDCs	2.8%	1	+61.3%	0	0
Pension and profit sharing plans	0.3%	1	-8.5%	0	0
Diversified	0.1%	1	-9.1%	0	0
Corporations	0.0%	0	-100.0%	0	1
Pooled investment vehicles	0.0%	0	—	0	0
Other investment advisers	0.0%	0	—	0	0
Unknown	77.5%	58	+5.0%	4	4

Private funds	Share	Filers	Change	New	Exited
Hedge funds	0.0%	2	-93.4%	0	0
Private equity funds	0.5%	4	+40.7%	1	1
Venture capital funds	0.0%	1	0.0%	0	0
Other private funds	5.5%	11	+21.8%	1	0
No private funds	16.3%	58	-4.0%	6	7
Real estate funds	0.2%	1	+0.9%	0	0
Unknown	77.5%	58	+5.0%	4	4

Location	Share	Filers	Change	New	Exited
United States	85.0%	132	+3.2%	11	12
Outside the US	15.0%	3	+8.6%	1	0

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 5 holders with no observed 2026-03-31 13F and 3 holders with no observed 2026-06-30 13F.

Conviction and Crowding

135 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders

0.000% of filers hold it in their top 10

Mar 31, 2026: 1

Holders above 5%

median weight 0.005%

Mar 31, 2026: 0

Crowding

—

no cover-page share count is dated within about a year of the quarter end

Private-fund advisers

—

of shares outstanding

Institutional ownership

—

no cover-page share count is dated within about a year of the quarter end

Top 10 holders

67.3%

of 13F shares, Herfindahl 0.067

Active holders

+3.6%

like-for-like share change of active filers

5% stakes on record

0 13D, 0 13G

How long holders have held it value-weighted 21.9 quarters

Under 1 year 3.24% 1 to 3 years 15.1% 3 years or more 81.7% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost

$11.34

estimated per share

Mar 31, 2026: $11.13

Quarter-end price

$13.44

implied by 13F values

Estimated gain or loss

+18.5%

price against the estimated cost

Estimated at a loss

4.01%

of costed 13F value

Estimated cost covers 15.7% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Fund Ownership of CHI by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 0.00% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	0.00%	0.00 pp	0	0
Index ETFs	0.00%	0.00 pp	0	0
Active ETFs	0.00%	0.00 pp	0	0
Active funds	0.33%	+0.26 pp	266,814	2
Unclassified	0.00%	0.00 pp	0	0
All registered funds	0.33%	+0.26 pp	266,814	2

How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 79 Adviser 4 Bank 7 Broker-dealer 1 Holding company 3 Unknown 43

Showing 100 of 137

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Compact Export CSV

Holder

Value (USD)

% of 13F

BANK OF AMERICA CORP /DE/

$38,759,804

15.40%

2,883,914

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MERRILL LYNCH, PIERCE, FENNER & SMITH INC.	2,883,914	$38,759,804	100.0%	Defined

UBS Group AG

$34,601,682

13.75%

2,574,530

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	2,570,719	$34,550,463	99.9%	Defined
UBS Securities LLC	3,811	$51,219	0.1%	Defined

MORGAN STANLEY

$20,845,856

8.28%

1,551,031

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY SMITH BARNEY LLC	1,551,031	$20,845,856	100.0%	Defined

WELLS FARGO & COMPANY/MN

$18,316,569

7.28%

1,362,840

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	1,220,735	$16,406,678	89.6%	Defined
WELLS FARGO CLEARING SERVICES, LLC	142,105	$1,909,891	10.4%	Defined

D.A. DAVIDSON & CO.

$14,856,817

5.90%

1,105,418

LPL Financial LLC

$9,418,295

3.74%

700,766

GUGGENHEIM CAPITAL LLC

$8,646,072

3.43%

643,309

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GUGGENHEIM FUNDS DISTRIBUTORS, LLC	643,309	$8,646,072	100.0%	Defined

AMERIPRISE FINANCIAL INC

$8,603,306

3.42%

640,127

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Ameriprise Financial Services, LLC	637,201	$8,563,981	99.5%	Defined
Ameriprise Bank, FSB	2,926	$39,325	0.5%	Defined

Baird Financial Group, Inc.

$8,250,291

3.28%

613,861

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Robert W. Baird & Co. Inc	613,861	$8,250,291	100.0%	Defined

COMMONWEALTH EQUITY SERVICES, LLC

$7,575,939

3.01%

563,686

Advisors Asset Management, Inc.

$7,175,548

2.85%

533,895

RAYMOND JAMES FINANCIAL INC

$3,883,137

1.54%

288,924

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RAYMOND JAMES & ASSOCIATES	100,781	$1,354,496	34.9%	Defined
Raymond James Financial Services Advisors, Inc.	188,143	$2,528,641	65.1%	Defined

HARBOUR INVESTMENTS, INC.

$3,678,554

1.46%

273,702

OSAIC HOLDINGS, INC.

$3,481,590

1.38%

259,047

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	236,101	$3,173,197	91.1%	Defined
CW Advisors, LLC	16,634	$223,560	6.4%	Sole
Osaic Advisory Services, LLC	6,312	$84,833	2.4%	Defined

Samalin Investment Counsel, LLC

$3,415,272

1.36%

298,799

Marathon Strategic Advisors, LLC

$3,412,895

1.36%

298,591

OPPENHEIMER & CO INC

$3,328,964

1.32%

291,248

Creekside Partners

$3,196,784

1.27%

237,856

ROYAL BANK OF CANADA

$2,984,311

1.19%

222,047

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC Capital Markets, LLC	222,047	$2,984,311	100.0%	Defined

Cetera Investment Advisers

$2,466,737

0.98%

183,537

NewEdge Advisors, LLC

$2,267,637

0.90%

168,723

Rockefeller Capital Management L.P.

$2,074,087

0.82%

154,322

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
ROCKEFELLER FINANCIAL LLC	154,322	$2,074,087	100.0%	Defined

Cambridge Investment Research Advisors, Inc.

$2,001,457

0.80%

148,918

Focus Partners Wealth

$1,905,456

0.76%

141,775

Grange Capital, LLC

$1,567,087

0.62%

137,103

Everstar Asset Management, LLC

$1,501,557

0.60%

111,723

STIFEL FINANCIAL CORP

$1,342,696

0.53%

99,903

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STIFEL NICOLAUS & CO INC \MO\	99,903	$1,342,696	100.0%	Defined

PMG Family Office LLC

$1,148,852

0.46%

100,512

Advisory Solutions Group, LLC

$1,131,832

0.45%

99,023

Janney Montgomery Scott LLC

$1,075,052

0.43%

79,989

FIFTH THIRD BANCORP

$1,026,238

0.41%

76,357

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fifth Third Bank, National Association	76,357	$1,026,238	100.0%	Defined

COHEN & STEERS, INC.

$1,008,000

0.40%

75,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Cohen & Steers Capital Management Inc	75,000	$1,008,000	100.0%	Sole

IHT Wealth Management, LLC

$954,938

0.38%

71,052

Total Wealth Planning & Management, Inc.

$881,047

0.35%

77,082

Boreal Capital Management LLC

$856,397

0.34%

SEI INVESTMENTS CO

$844,045

0.34%

62,801

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI INVESTMENTS MANAGEMENT CORP	62,801	$844,045	100.0%	Sole

Mutual Advisors, LLC

$815,404

0.32%

60,670

Legacy Wealth Management, LLC / MS

$740,664

0.29%

55,109

SAM Advisors, LLC

$721,405

0.29%

53,676

CAPTRUST FINANCIAL ADVISORS

$680,037

0.27%

50,598

NORTHERN TRUST CORP

$628,750

0.25%

46,782

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO	46,782	$628,750	100.0%	Defined

KFA Private Wealth Group, LLC

$554,332

0.22%

48,498

Geneos Wealth Management Inc.

$503,650

0.20%

37,474

&PARTNERS

$502,588

0.20%

37,395

CreativeOne Wealth, LLC

$493,086

0.20%

36,688

Kestra Advisory Services, LLC

$493,032

0.20%

36,684

Jaffetilchin Investment Partners, LLC

$472,899

0.19%

35,186

INDEPENDENT FINANCIAL GROUP, LLC

$470,150

0.19%

41,133

NorthRock Partners, LLC

$468,451

0.19%

34,855

BENJAMIN EDWARDS INC

$455,118

0.18%

33,863

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BENJAMIN F. EDWARDS & COMPANY, INC.	33,863	$455,118	100.0%	Defined

CENTRAL TRUST Co

$443,184

0.18%

32,975

Arax Advisory Partners

$431,397

0.17%

32,098

Private Advisor Group, LLC

$409,637

0.16%

30,479

PFG Investments, LLC

$400,565

0.16%

29,804

E&G Advisors, LP

$395,500

0.16%

34,602

DF DENT & CO INC

$395,377

0.16%

29,418

Sanctuary Advisors, LLC

$393,872

0.16%

29,306

Game Plan Financial Advisors, LLC

$379,680

0.15%

28,250

Mariner, LLC

$377,556

0.15%

28,092

Founders Financial Alliance, LLC

$375,916

0.15%

27,970

Apollon Wealth Management, LLC

$375,304

0.15%

32,835

STEPHENS INC /AR/

$370,527

0.15%

27,569

Sigma Planning Corp

$364,479

0.14%

31,888

PNC FINANCIAL SERVICES GROUP, INC.

$357,368

0.14%

26,590

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PNC Bank, National Association	26,390	$354,680	99.2%	Defined
PNC Wealth Management LLC	200	$2,688	0.8%	Defined

XTX Topco Ltd

$346,227

0.14%

25,761

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	25,761	$346,227	100.0%	Defined

DUMONT & BLAKE INVESTMENT ADVISORS LLC

$335,475

0.13%

24,961

Patten Group, Inc.

$334,281

0.13%

29,246

WEALTH ENHANCEMENT ADVISORY SERVICES, LLC

$333,378

0.13%

29,167

FLAGSHIP HARBOR ADVISORS, LLC

$326,532

0.13%

28,568

HOLLENCREST CAPITAL MANAGEMENT

$326,497

0.13%

24,293

HighTower Advisors, LLC

$320,019

0.13%

23,811

INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC

$317,412

0.13%

23,617

Concurrent Investment Advisors, LLC

$314,782

0.13%

27,540

MML INVESTORS SERVICES, LLC

$291,029

0.12%

21,654

ENVESTNET ASSET MANAGEMENT INC

$268,477

0.11%

19,976

EP Wealth Advisors, LLC

$251,086

0.10%

18,682

Hilltop Partners LLC

$246,019

0.10%

18,305

WEALTH EFFECTS LLC

$211,935

0.08%

18,542

Cerity Partners LLC

$211,384

0.08%

15,728

Sunpointe, LLC

$202,825

0.08%

17,745

WEDBUSH SECURITIES INC

$194,881

0.08%

17,050

NOVEM GROUP

$189,474

0.08%

16,577

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MPI Wealth Management	14,260	$162,991	86.0%	Defined
Held directly	2,317	$26,483	14.0%	Sole

MONEY CONCEPTS CAPITAL CORP

$185,458

0.07%

13,799

Clear Trail Advisors, LLC

$184,823

0.07%

16,170

Beacon Pointe Advisors, LLC

$182,918

0.07%

13,610

PINNACLE ASSOCIATES LTD

$181,051

0.07%

15,840

HALBERT HARGROVE GLOBAL ADVISORS, LLC

$178,879

0.07%

15,650

Kovack Advisors, Inc.

$178,375

0.07%

13,272

Carrera Capital Advisors

$174,720

0.07%

13,000

NWAM LLC

$173,523

0.07%

12,911

one8zero8, LLC

$168,672

0.07%

12,550

Palogic Value Management, L.P.

$161,280

0.06%

12,000

Modern Wealth Management, LLC

$160,137

0.06%

11,915

MELFA WEALTH MANAGEMENT, INC.

$158,847

0.06%

11,819

AXXCESS WEALTH MANAGEMENT, LLC

$157,459

0.06%

13,776

San Luis Wealth Advisors LLC

$154,933

0.06%

13,555

CoreCap Advisors, LLC

$151,447

0.06%

13,250

Clearwave Capital, LLC

$149,275

0.06%

13,060

MGO ONE SEVEN LLC

$145,246

0.06%

10,807

Continuum Advisory, LLC

$143,982

0.06%

10,713

Showing the top 100 of 137 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 1171471 CUSIP 128117108 13F (30d) 44 filings 44 filers Investor relations