# EDGAR Filing Document

**Accession Number:** 0000826732
**File Stem:** 0001104659-23-028260
**Filing Date:** 2023-3
**Character Count:** 7970
**Document Hash:** a677c8289ac03a586f6c1deee9d141b6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-23-028260.hdr.sgml**: 20230303

**ACCESSION NUMBER**: 0001104659-23-028260

**CONFORMED SUBMISSION TYPE**: 497J

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20230303

**DATE AS OF CHANGE**: 20230303

**EFFECTIVENESS DATE**: 20230303

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CALAMOS INVESTMENT TRUST/IL
- **CENTRAL INDEX KEY:** 0000826732
- **IRS NUMBER:** 363316238
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 497J
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-19228
- **FILM NUMBER:** 23702033

**BUSINESS ADDRESS:**
- **STREET 1:** 2020 CALAMOS COURT
- **STREET 2:** C/O CALAMOS ADVISORS LLC
- **CITY:** NAPERVILLE
- **STATE:** IL
- **ZIP:** 60563
- **BUSINESS PHONE:** 6302451046

**MAIL ADDRESS:**
- **STREET 1:** 2020 CALAMOS COURT
- **STREET 2:** C/O CALAMOS ADVISORS LLC
- **CITY:** NAPERVILLE
- **STATE:** IL
- **ZIP:** 60563

## Series and Classes Contracts Data

### Calamos High Income Opportunities Fund (Series ID: S000004057)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000011346 | Class A      | CHYDX           |
| C000011348 | Class C      | CCHYX           |
| C000011349 | Class I      | CIHYX           |

### Calamos Select Fund (Series ID: S000004058)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000011350 | Class A      | CVAAX           |
| C000011352 | Class C      | CVACX           |
| C000011353 | Class I      | CVAIX           |

### Calamos Convertible Fund (Series ID: S000004060)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000011358 | Class A      | CCVIX           |
| C000011360 | Class C      | CCVCX           |
| C000011361 | Class I      | CICVX           |

### Calamos Growth & Income Fund (Series ID: S000004061)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000011362 | Class A      | CVTRX           |
| C000011364 | Class C      | CVTCX           |
| C000011365 | Class I      | CGIIX           |
| C000220407 | Class R6     | CGIOX           |

### Calamos Market Neutral Income Fund (Series ID: S000004062)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000011366 | Class A      | CVSIX           |
| C000011368 | Class C      | CVSCX           |
| C000011369 | Class I      | CMNIX           |
| C000220408 | Class R6     | CVSOX           |

### Calamos Growth Fund (Series ID: S000004063)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000011370 | Class A      | CVGRX           |
| C000011372 | Class C      | CVGCX           |
| C000011373 | Class I      | CGRIX           |

### Calamos Global Opportunities Fund (Series ID: S000004064)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000011374 | Class A      | CVLOX           |
| C000011376 | Class C      | CVLCX           |
| C000011377 | Class I      | CGCIX           |

### Calamos International Growth Fund (Series ID: S000004065)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000011378 | Class A      | CIGRX           |
| C000011380 | Class C      | CIGCX           |
| C000011381 | Class I      | CIGIX           |
| C000204888 | Class R6     | CIGOX           |

### CALAMOS GLOBAL EQUITY FUND (Series ID: S000015914)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000043702 | CLASS A      | CAGEX           |
| C000043704 | CLASS C      | CCGEX           |
| C000043705 | CLASS I      | CIGEX           |
| C000220409 | Class R6     | CGEOX           |

### CALAMOS TOTAL RETURN BOND FUND (Series ID: S000017871)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000049601 | CLASS A SHARES | CTRAX           |
| C000049603 | CLASS C SHARES | CTRCX           |
| C000049604 | CLASS I SHARES | CTRIX           |

### Calamos Evolving World Growth Fund (Series ID: S000022429)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000064541 | Class A      | CNWGX           |
| C000064543 | Class C      | CNWDX           |
| C000064544 | Class I      | CNWIX           |

### Calamos Dividend Growth Fund (Series ID: S000041744)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000129591 | Class A      | CADVX           |
| C000129592 | Class C      | CCDVX           |
| C000129593 | Class I      | CIDVX           |

### Calamos Global Convertible Fund (Series ID: S000047913)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000150496 | Class A      | CAGCX           |
| C000150497 | Class C      | CCGCX           |
| C000150498 | Class I      | CXGCX           |

### Calamos Hedged Equity Fund (Series ID: S000047914)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000150500 | Class A      | CAHEX           |
| C000150501 | Class C      | CCHEX           |
| C000150502 | Class I      | CIHEX           |

### Calamos Phineus Long/Short Fund (Series ID: S000052577)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000165048 | Class A      | CPLSX           |
| C000165049 | Class C      | CPCLX           |
| C000165050 | Class I      | CPLIX           |

### Calamos Short-Term Bond Fund (Series ID: S000062995)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000204432 | Class A      | CSTBX           |
| C000204433 | Class I      | CSTIX           |

### Calamos Timpani Small Cap Growth Fund (Series ID: S000065224)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000211096 | Class I      | CTSIX           |
| C000211097 | Class R6     | CTSOX           |
| C000211098 | Class A      | CTASX           |
| C000228743 | Class C      |  |

### Calamos Timpani SMID Growth Fund (Series ID: S000065991)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000213160 | Class R6     | CTOGX           |
| C000213161 | Class A      | CTAGX           |
| C000213162 | Class I      | CTIGX           |

### Calamos Global Sustainable Equities Fund (Series ID: S000074710)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000232828 | Class R6     |  |
| C000232829 | Class A      |  |
| C000232830 | Class C      |  |
| C000232831 | Class I      |  |

### Calamos International Small Cap Growth Fund (Series ID: S000075668)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000234922 | Class C      |  |
| C000234923 | Class A      |  |
| C000234924 | Class I      |  |
| C000234925 | Class R6     |  |

![](tm231455d27_497jimg002.jpg)

March 3, 2023

<u>VIA EDGAR</u>

Filing Desk

Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Re: Calamos Investment Trust (the "Trust") (File Nos. 33-19228 and 811-05443)

Ladies and Gentlemen:

On behalf of the Trust, and pursuant to the Securities Act of 1933, as amended (the "Securities Act"), and Rule 497(j) thereunder, we hereby represent that the definitive forms of the Calamos Global Sustainable Equities Fund Prospectus, dated March 1, 2023, and the Trust's Statements of Additional Information, each dated March 1, 2023, that would have been filed pursuant to the requirements of Rule 497(c) under the Securities Act, would not have differed from those contained in the Trust's Post-Effective Amendment No. 144 to its Registration Statement on Form N-1A, which was filed electronically with the Securities and Exchange Commission pursuant to Rule 485(b) under the Securities Act on February 24, 2023.

If you have any questions concerning this filing, please call me at 630-245-8394.

---

| |
|:---|
| Sincerely, |
| /s/ J. Christopher Jackson |
| J. Christopher Jackson, Esq. |
| Vice President and Secretary |

---

---

| | |
|:---|:---|
| cc: | John P. Calamos, Sr. |
|  | Susan L. Schoenberger, Esq. |
|  | Paulita Pike, Esq., Ropes & Gray LLP |
|  | Rita Rubin, Esq., Ropes & Gray LLP |

---