# EDGAR Filing Document

**Accession Number:** 0000826732
**File Stem:** 0001752724-25-161597
**Filing Date:** 2025-6
**Character Count:** 16423
**Document Hash:** 46908e75111767d69373ea78e0186263
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-161597.hdr.sgml**: 20250627

**ACCESSION NUMBER**: 0001752724-25-161597

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250430

**FILED AS OF DATE**: 20250627

**DATE AS OF CHANGE**: 20250627

**PERIOD START**: 20251031

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CALAMOS INVESTMENT TRUST/IL
- **CENTRAL INDEX KEY:** 0000826732

**ORGANIZATION NAME:**
- **EIN:** 363316238
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-05443
- **FILM NUMBER:** 251083913

**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 Merger Arbitrage Fund (Series ID: S000081268)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000243949 | Class I      |  |
| C000243950 | Class C      |  |
| C000243951 | Class A      |  |

## Form NPORT-P: Monthly Portfolio Investments Report

### NPORT-P: Part A: General Information

**Item A.1. Information about the Registrant.**

- **a. Name of Registrant:** CALAMOS INVESTMENT TRUST/IL

- **b. Investment Company Act file number:** 811-05443

- **c. CIK number of Registrant:** 0000826732

- **d. LEI of Registrant:** 3MM2UW658H6KOU4WEW86

- **e. Address and telephone number of Registrant.**

  - **Street Address 1:** 2020 CALAMOS COURT

  - **City:** NAPERVILLE

  - **State:** IL

  - **Foreign country:** US

  - **Zip / Postal Code:** 60563

  - **Telephone number:** 630-245-7200

**Item A.2. Information about the Series.**

- **a. Name of Series:** Calamos Merger Arbitrage Fund

- **b. EDGAR series identifier (if any):** S000081268

- **c. LEI of Series:** 5493000KIMK2YSAPJF63

**Item A.3. Reporting period.**

- **a. Date of fiscal year-end:** 2025-10-31

- **b. Date as of which information is reported:** 2025-04-30

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $2698054.81

**Total Liabilities:** $685079.28

**Net Assets:** $2012975.53

**Cash Not Reported:** $342538.17

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000243950 | 0.81%                | -1.11%               | -0.51%               |
| Class ID C000243951 | 0.91%                | -1.00%               | -0.41%               |
| Class ID C000243949 | 0.91%                | -1.00%               | -0.41%               |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $22566.18                | $1738.77                                   |
| Month 2  | $17810.24                | $-34879.85                                 |
| Month 3  | $20161.91                | $-29426.56                                 |

**Designated Index Information**

- **Index Name:** Securities Portfolio VaR

- **Index Identifier:** Designated Reference Portfolio is the Fund`s Securities Portfolio

### Schedule of Portfolio Investments

| Name                                  | Title                                 | Identifiers                                   | Payoff Profile   | Asset Category   | Issuer Category   | Country   |   Balance | Units   | Value (USD)   | % of Net Assets   | Maturity Date   | Coupon Type   | Annualized Rate (%)   | Restricted?   |   Fair Value Level | Lending Status   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Soho House & Co Inc                   | Soho House & Co Inc                   | CUSIP: 586001109<br>LEI: 213800XNSPPBRF2E5A41 | Long             | EC               | CORP              | US        |      1660 | NS      | $9976.60      | 0.50%             |  |  |  | No            |                  1 | On Loan: No      |
| AZEK Co Inc/The                       | AZEK Co Inc/The                       | CUSIP: 05478C105<br>LEI: 5493002LDDDU1RX46815 | Long             | EC               | CORP              | US        |      1207 | NS      | $59818.92     | 2.97%             |  |  |  | No            |                  1 | On Loan: No      |
| Amedisys Inc                          | Amedisys Inc                          | CUSIP: 023436108<br>LEI: 5299001RBS9GK9STN379 | Long             | EC               | CORP              | US        |      1872 | NS      | $177652.80    | 8.83%             |  |  |  | No            |                  1 | On Loan: No      |
| Chevron Corp                          | Chevron Corp                          | CUSIP: 166764100<br>LEI: N/A                  | Short            | EC               | CORP              | US        |      -967 | NS      | $-131570.02   | -6.54%            |  |  |  | No            |                  1 | On Loan: No      |
| Redfin Corp                           | Redfin Corp                           | CUSIP: 75737F108<br>LEI: 549300HXWD3JEMZU3O57 | Long             | EC               | CORP              | US        |       410 | NS      | $3899.10      | 0.19%             |  |  |  | No            |                  1 | On Loan: No      |
| Quetta Acquisition Corp               | Quetta Acquisition Corp               | CUSIP: 74841A113<br>LEI: N/A                  | N/A              | DE               |  | US        |        23 | NS      | $37.03        | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| Hess Corp                             | Hess Corp                             | CUSIP: 42809H107<br>LEI: UASVRYNXNK17ULIGK870 | Long             | EC               | CORP              | US        |      1185 | NS      | $152924.25    | 7.60%             |  |  |  | No            |                  1 | On Loan: No      |
| Core Natural Resources Inc            | Core Natural Resources Inc            | CUSIP: 218937100<br>LEI: 549300YJCTPJBTK7IJ81 | Long             | EC               | CORP              | US        |       364 | NS      | $26284.44     | 1.31%             |  |  |  | No            |                  1 | On Loan: No      |
| CONTRA MIRATI THERAPEU                | CONTRA MIRATI THERAPEU                | CUSIP: 604CVR027<br>LEI: 529900GYRW59IDQV6N54 | N/A              | DE               |  | US        |       755 | NS      | $755.00       | 0.04%             |  |  |  | No            |                  3 | On Loan: No      |
| Ai Transportation Acquisition Corp    | Ai Transportation Acquisition Corp    | CUSIP: 000000000<br>LEI: N/A                  | N/A              | DE               |  | KY        |       327 | NS      | $49.05        | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| RAPID7 INC                            | Rapid7 Inc                            | CUSIP: 753422AF1<br>LEI: 549300GNVG5D60KEYN14 | Long             | DBT              | CORP              | US        |     55000 | PA      | $50432.25     | 2.51%             | 2027-03-15      | Fixed         | 0.25%                 | No            |                  2 | On Loan: No      |
| Amcor PLC                             | Amcor PLC                             | CUSIP: 000000000<br>LEI: 549300GSODGFCDQ3DI89 | Long             | EC               | CORP              | JE        |      7975 | NS      | $73370.00     | 3.64%             |  |  |  | No            |                  1 | On Loan: No      |
| Amcor PLC                             | Amcor PLC                             | CUSIP: 000000000<br>LEI: 549300GSODGFCDQ3DI89 | Short            | EC               | CORP              | JE        |     -6140 | NS      | $-56488.00    | -2.81%            |  |  |  | No            |                  1 | On Loan: No      |
| Everest Consolidator Acquisition Corp | Everest Consolidator Acquisition Corp | CUSIP: 29978K102<br>LEI: N/A                  | Long             | EC               | CORP              | US        |      7970 | NS      | $92212.90     | 4.58%             |  |  |  | No            |                  3 | On Loan: No      |
| Synopsys Inc                          | Synopsys Inc                          | CUSIP: 871607107<br>LEI: QG7T915N9S0NY5UKNE63 | Short            | EC               | CORP              | US        |       -17 | NS      | $-7803.17     | -0.39%            |  |  |  | No            |                  1 | On Loan: No      |
| Omnicom Group Inc                     | Omnicom Group Inc                     | CUSIP: 681919106<br>LEI: HKUPACFHSSASQK8HLS17 | Short            | EC               | CORP              | US        |      -775 | NS      | $-59024.00    | -2.93%            |  |  |  | No            |                  1 | On Loan: No      |
| ALIBABA GROUP HOLDING                 | Alibaba Group Holding Ltd             | CUSIP: 01609WBF8<br>LEI: 5493001NTNQJDH60PM02 | Long             | DBT              | CORP              | KY        |     42000 | PA      | $55251.42     | 2.74%             | 2031-06-01      | Fixed         | 0.50%                 | No            |                  2 | On Loan: No      |
| ChampionX Corp                        | ChampionX Corp                        | CUSIP: 15872M104<br>LEI: 549300EP2909K6DYYP38 | Long             | EC               | CORP              | US        |      2696 | NS      | $65054.48     | 3.23%             |  |  |  | No            |                  1 | On Loan: No      |
| SHIFT4 PAYMENTS INC                   | Shift4 Payments Inc                   | CUSIP: 82452JAD1<br>LEI: N/A                  | Long             | DBT              | CORP              | US        |     53000 | PA      | $54181.37     | 2.69%             | 2027-08-01      | Fixed         | 0.50%                 | No            |                  2 | On Loan: No      |
| Black Hawk Acquisition Corp           | Black Hawk Acquisition Corp           | CUSIP: 000000000<br>LEI: N/A                  | N/A              | DE               |  | KY        |        81 | NS      | $129.60       | 0.01%             |  |  |  | No            |                  2 | On Loan: No      |
| FIVE9 INC                             | Five9 Inc                             | CUSIP: 338307AF8<br>LEI: 254900MXP6EWY0SFFR59 | Long             | DBT              | CORP              | US        |    107000 | PA      | $91206.80     | 4.53%             | 2029-03-15      | Fixed         | 1.00%                 | No            |                  2 | On Loan: No      |
| Juniper Networks Inc                  | Juniper Networks Inc                  | CUSIP: 48203R104<br>LEI: AUHIXNGG7U2U7JEHM527 | Long             | EC               | CORP              | US        |      5022 | NS      | $182399.04    | 9.06%             |  |  |  | No            |                  1 | On Loan: No      |
| REDFIN CORP                           | Redfin Corp                           | CUSIP: 75737FAE8<br>LEI: 549300HXWD3JEMZU3O57 | Long             | DBT              | CORP              | US        |    104000 | PA      | $91487.76     | 4.54%             | 2027-04-01      | Fixed         | 0.50%                 | No            |                  2 | On Loan: No      |
| Noble Corp PLC                        | Noble Corp PLC                        | CUSIP: 000000000<br>LEI: 549300I3HBUNXO0OG954 | Long             | EC               | CORP              | GB        |       303 | NS      | $6587.22      | 0.33%             |  |  |  | No            |                  1 | On Loan: No      |
| Pfizer Inc                            | Pfizer Inc                            | CUSIP: 717081103<br>LEI: 765LHXWGK1KXCLTFYQ30 | Long             | EC               | CORP              | US        |      2840 | NS      | $69324.40     | 3.44%             |  |  |  | No            |                  1 | On Loan: No      |
| Mr Cooper Group Inc                   | Mr Cooper Group Inc                   | CUSIP: 62482R107<br>LEI: 549300KD8C6DPXYC2M26 | Long             | EC               | CORP              | US        |       452 | NS      | $53792.52     | 2.67%             |  |  |  | No            |                  1 | On Loan: No      |
| Twilio Inc                            | Twilio Inc                            | CUSIP: 90138F102<br>LEI: 5493004W8TRGD63APX93 | Long             | EC               | CORP              | US        |       212 | NS      | $20502.52     | 1.02%             |  |  |  | No            |                  1 | On Loan: No      |
| WOLFSPEED INC                         | Wolfspeed Inc                         | CUSIP: 977852AB8<br>LEI: 549300OGU88P3AW3TO93 | Long             | DBT              | CORP              | US        |     27000 | PA      | $8060.58      | 0.40%             | 2028-02-15      | Fixed         | 0.25%                 | No            |                  2 | On Loan: No      |
| CSG SYSTEMS INTERNATIONA              | CSG Systems International Inc         | CUSIP: 126349AH2<br>LEI: 549300D7FJZUOHHXUA81 | Long             | DBT              | CORP              | US        |     37000 | PA      | $40314.83     | 2.00%             | 2028-09-15      | Fixed         | 3.88%                 | No            |                  2 | On Loan: No      |
| ANSYS Inc                             | ANSYS Inc                             | CUSIP: 03662Q105<br>LEI: 549300VJV8H15Z5FJ571 | Long             | EC               | CORP              | US        |       310 | NS      | $99782.80     | 4.96%             |  |  |  | No            |                  1 | On Loan: No      |
| Spark I Acquisition Corp              | Spark I Acquisition Corp              | CUSIP: 000000000<br>LEI: N/A                  | N/A              | DE               |  | KY        |       115 | NS      | $14.96        | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| Boston Beer Co Inc/The                | Boston Beer Co Inc/The                | CUSIP: 100557107<br>LEI: 529900Q02MQ0DCQNRM58 | Long             | EC               | CORP              | US        |       167 | NS      | $41048.60     | 2.04%             |  |  |  | No            |                  1 | On Loan: No      |
| Interpublic Group of Cos Inc/The      | Interpublic Group of Cos Inc/The      | CUSIP: 460690100<br>LEI: 5493008IUOJ5VWTRC333 | Long             | EC               | CORP              | US        |      3600 | NS      | $90432.00     | 4.49%             |  |  |  | No            |                  1 | On Loan: No      |
| Four Leaf Acquisition Corp            | Four Leaf Acquisition Corp            | CUSIP: 35088F107<br>LEI: N/A                  | Long             | EC               | CORP              | US        |      4527 | NS      | $52173.68     | 2.59%             |  |  |  | No            |                  2 | On Loan: No      |
| Blackbaud Inc                         | Blackbaud Inc                         | CUSIP: 09227Q100<br>LEI: 54930056X3HKFMNG3754 | Long             | EC               | CORP              | US        |       517 | NS      | $31299.18     | 1.55%             |  |  |  | No            |                  1 | On Loan: No      |
| BLACKLINE INC                         | BlackLine Inc                         | CUSIP: 09239BAE9<br>LEI: 529900P9N7PK9LV5EK56 | Long             | DBT              | CORP              | US        |     53000 | PA      | $52340.15     | 2.60%             | 2029-06-01      | Fixed         | 1.00%                 | No            |                  2 | On Loan: No      |
| FutureTech II Acquisition Corp        | FutureTech II Acquisition Corp        | CUSIP: 36119D103<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     15516 | NS      | $173003.40    | 8.59%             |  |  |  | No            |                  2 | On Loan: No      |

### Signature

**Date Signed:** 2025-05-19

**Name of Applicant:** CALAMOS INVESTMENT TRUST/IL

**Signature:** Stephen Atkins

**Name of Signer:** Stephen Atkins

**Title:** Treasuer