# EDGAR Filing Document

**Accession Number:** 0000826732
**File Stem:** 0001410368-25-042397
**Filing Date:** 2025-12
**Character Count:** 20770
**Document Hash:** 09e55f2aef22bc8814bedde2b743a0eb
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001410368-25-042397.hdr.sgml**: 20251223

**ACCESSION NUMBER**: 0001410368-25-042397

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251031

**FILED AS OF DATE**: 20251223

**DATE AS OF CHANGE**: 20251223

**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:** 251599781

**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:** 2025-10-31

**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:** $3831146.96

**Total Liabilities:** $990759.80

**Net Assets:** $2840387.16

**Cash Not Reported:** $373783.31

**Currency Risk Metrics (dv01):**

- 

**Credit Spread Risk - Investment Grade (dv01):**

- **3-Month:** -0.92000000 | **1-Year:** -7.60000000 | **5-Year:** -47.88000000 | **10-Year:** -4.09000000 | **30-Year:** 0.00000000

**Credit Spread Risk - Non-Investment Grade (dv01):**

- **3-Month:** -5.77000000 | **1-Year:** -64.84000000 | **5-Year:** -109.23000000 | **10-Year:** -0.10000000 | **30-Year:** 0.00000000

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000243949 | 1.63%                | 1.51%                | 0.00%                |
| Class ID C000243950 | 1.54%                | 1.42%                | 0.00%                |
| Class ID C000243951 | 1.72%                | 1.41%                | 0.00%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $12609.26                | $26418.70                                  |
| Month 2  | $40234.87                | $-4172.94                                  |
| Month 3  | $22042.13                | $-22385.15                                 |

**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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| Akero Therapeutics Inc                 | Akero Therapeutics Inc                 | CUSIP: 00973Y108<br>LEI: 549300SI3KG74LBE2955 | Long             | EC               | CORP              | US        |       523 | NS      | $28346.60     | 1.00%             |  |  |  | No            |                  1 | On Loan: No      |
| BILL HOLDINGS INC                      | BILL Holdings Inc                      | CUSIP: 090043AE0<br>LEI: 549300IBF9VZZIGOZW63 | Long             | DBT              | CORP              | US        |    145000 | PA      | $128662.85    | 4.53%             | 2030-04-01      | None          | 0.00%                 | No            |                  2 | On Loan: No      |
| Blackbaud Inc                          | Blackbaud Inc                          | CUSIP: 09227Q100<br>LEI: 54930056X3HKFMNG3754 | Long             | EC               | CORP              | US        |       509 | NS      | $32596.36     | 1.15%             |  |  |  | No            |                  1 | On Loan: No      |
| BLACKLINE INC                          | BlackLine Inc                          | CUSIP: 09239BAF6<br>LEI: 529900P9N7PK9LV5EK56 | Long             | DBT              | CORP              | US        |     49000 | PA      | $52689.70     | 1.86%             | 2029-06-01      | Fixed         | 1.00%                 | No            |                  2 | On Loan: No      |
| Boston Beer Co Inc/The                 | Boston Beer Co Inc/The                 | CUSIP: 100557107<br>LEI: 529900Q02MQ0DCQNRM58 | Long             | EC               | CORP              | US        |       255 | NS      | $52782.45     | 1.86%             |  |  |  | No            |                  1 | On Loan: No      |
| CSG SYSTEMS INTERNATIONA               | CSG Systems International Inc          | CUSIP: 126349AH2<br>LEI: 549300D7FJZUOHHXUA81 | Long             | DBT              | CORP              | US        |     37000 | PA      | $44365.59     | 1.56%             | 2028-09-15      | Fixed         | 3.88%                 | No            |                  2 | On Loan: No      |
| DAYFORCE INC                           | Dayforce Inc                           | CUSIP: 15677JAD0<br>LEI: 549300T64GVCHFJ8L449 | Long             | DBT              | CORP              | US        |    118000 | PA      | $115960.96    | 4.08%             | 2026-03-15      | Fixed         | 0.25%                 | No            |                  2 | On Loan: No      |
| Chart Industries Inc                   | Chart Industries Inc                   | CUSIP: 16115Q308<br>LEI: EM7QGKC1GYOF3LSZSL80 | Long             | EC               | CORP              | US        |       418 | NS      | $83441.16     | 2.94%             |  |  |  | No            |                  1 | On Loan: No      |
| Compass Inc                            | Compass Inc                            | CUSIP: 20464U100<br>LEI: 254900DMGQSTC3I2IM78 | Short            | EC               | CORP              | US        |    -11488 | NS      | $-88572.48    | -3.12%            |  |  |  | No            |                  1 | On Loan: No      |
| Cross Country Healthcare Inc           | Cross Country Healthcare Inc           | CUSIP: 227483104<br>LEI: 54930037L0NBIPZ5S663 | Long             | EC               | CORP              | US        |      1736 | NS      | $21283.36     | 0.75%             |  |  |  | No            |                  1 | On Loan: No      |
| Electronic Arts Inc                    | Electronic Arts Inc                    | CUSIP: 285512109<br>LEI: 549300O7A67PUEYKDL45 | Long             | EC               | CORP              | US        |       200 | NS      | $40012.00     | 1.41%             |  |  |  | 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     | 3.25%             |  |  |  | No            |                  3 | On Loan: No      |
| FIVE9 INC                              | Five9 Inc                              | CUSIP: 338307AF8<br>LEI: 254900MXP6EWY0SFFR59 | Long             | DBT              | CORP              | US        |    141000 | PA      | $125904.54    | 4.43%             | 2029-03-15      | Fixed         | 1.00%                 | No            |                  2 | On Loan: No      |
| Four Leaf Acquisition Corp             | Four Leaf Acquisition Corp             | CUSIP: 35088F107<br>LEI: N/A                  | Long             | EC               | CORP              | US        |      4527 | NS      | $53192.25     | 1.87%             |  |  |  | No            |                  2 | On Loan: No      |
| FutureTech II Acquisition Corp         | FutureTech II Acquisition Corp         | CUSIP: 36119D103<br>LEI: N/A                  | Long             | EC               | CORP              | US        |     15115 | NS      | $181682.30    | 6.40%             |  |  |  | No            |                  2 | On Loan: No      |
| GLOBAL PAYMENTS INC                    | Global Payments Inc                    | CUSIP: 37940XAU6<br>LEI: 549300NOMHGVQBX6S778 | Long             | DBT              | CORP              | US        |    137000 | PA      | $123621.95    | 4.35%             | 2031-03-01      | Fixed         | 1.50%                 | No            |                  2 | On Loan: No      |
| Interpublic Group of Cos Inc/The       | Interpublic Group of Cos Inc/The       | CUSIP: 460690100<br>LEI: 5493008IUOJ5VWTRC333 | Long             | EC               | CORP              | US        |       396 | NS      | $10161.36     | 0.36%             |  |  |  | No            |                  1 | On Loan: No      |
| JD.COM INC                             | JD.com Inc                             | CUSIP: 47215PAJ5<br>LEI: 549300HVTWB0GJZ16V92 | Long             | DBT              | CORP              | KY        |     72000 | PA      | $76119.84     | 2.68%             | 2029-06-01      | Fixed         | 0.25%                 | No            |                  2 | On Loan: No      |
| CONTRA MIRATI THERAPEU                 | CONTRA MIRATI THERAPEU                 | CUSIP: 604CVR027<br>LEI: 529900GYRW59IDQV6N54 | N/A              | DE               |  | US        |       755 | NS      | $755.00       | 0.03%             |  |  |  | No            |                  3 | On Loan: No      |
| Norfolk Southern Corp                  | Norfolk Southern Corp                  | CUSIP: 655844108<br>LEI: 54930036C8MWP850MI84 | Long             | EC               | CORP              | US        |       423 | NS      | $119869.74    | 4.22%             |  |  |  | No            |                  1 | On Loan: No      |
| Omnicom Group Inc                      | Omnicom Group Inc                      | CUSIP: 681919106<br>LEI: HKUPACFHSSASQK8HLS17 | Short            | EC               | CORP              | US        |      -136 | NS      | $-10202.72    | -0.36%            |  |  |  | No            |                  1 | On Loan: No      |
| TXNM ENERGY INC                        | TXNM Energy Inc                        | CUSIP: 69349HAF4<br>LEI: 5493003JOBJGLZSDDQ28 | Long             | DBT              | CORP              | US        |    114000 | PA      | $149452.86    | 5.26%             | 2054-06-01      | Fixed         | 5.75%                 | No            |                  2 | On Loan: No      |
| PAGERDUTY INC.                         | PagerDuty Inc                          | CUSIP: 69553PAD2<br>LEI: 549300U1SB749EDAGH21 | Long             | DBT              | CORP              | US        |     79000 | PA      | $76532.04     | 2.69%             | 2028-10-15      | Fixed         | 1.50%                 | No            |                  2 | On Loan: No      |
| Palo Alto Networks Inc                 | Palo Alto Networks Inc                 | CUSIP: 697435105<br>LEI: 549300QXR2YVZV231H43 | Short            | EC               | CORP              | US        |      -550 | NS      | $-121132.00   | -4.26%            |  |  |  | No            |                  1 | On Loan: No      |
| Pfizer Inc                             | Pfizer Inc                             | CUSIP: 717081103<br>LEI: 765LHXWGK1KXCLTFYQ30 | Long             | EC               | CORP              | US        |      3270 | NS      | $80605.50     | 2.84%             |  |  |  | No            |                  1 | On Loan: No      |
| Quetta Acquisition Corp                | Quetta Acquisition Corp                | CUSIP: 74841A113<br>LEI: N/A                  | N/A              | DE               |  | US        |        23 | NS      | $40.25        | 0.00%             |  |  |  | No            |                  1 | On Loan: No      |
| RAPID7 INC                             | Rapid7 Inc                             | CUSIP: 753422AF1<br>LEI: 549300GNVG5D60KEYN14 | Long             | DBT              | CORP              | US        |     55000 | PA      | $52005.80     | 1.83%             | 2027-03-15      | Fixed         | 0.25%                 | No            |                  2 | On Loan: No      |
| RAPID7 INC                             | Rapid7 Inc                             | CUSIP: 753422AH7<br>LEI: 549300GNVG5D60KEYN14 | Long             | DBT              | CORP              | US        |     60000 | PA      | $54068.40     | 1.90%             | 2029-03-15      | Fixed         | 1.25%                 | No            |                  2 | On Loan: No      |
| Anywhere Real Estate Inc               | Anywhere Real Estate Inc               | CUSIP: 75605Y106<br>LEI: 5493004HBTOTE9DI9P12 | Long             | EC               | CORP              | US        |      8000 | NS      | $80400.00     | 2.83%             |  |  |  | No            |                  1 | On Loan: No      |
| SLB Ltd                                | SLB Ltd                                | CUSIP: 806857108<br>LEI: 213800ZUA17OK3QLGM62 | Long             | EC               | CORP              | CW        |      1660 | NS      | $59859.60     | 2.11%             |  |  |  | No            |                  1 | On Loan: No      |
| SHIFT4 PAYMENTS INC                    | Shift4 Payments Inc                    | CUSIP: 82452JAD1<br>LEI: N/A                  | Long             | DBT              | CORP              | US        |     80000 | PA      | $78800.80     | 2.77%             | 2027-08-01      | Fixed         | 0.50%                 | No            |                  2 | On Loan: No      |
| Synopsys Inc                           | Synopsys Inc                           | CUSIP: 871607107<br>LEI: QG7T915N9S0NY5UKNE63 | Long             | EC               | CORP              | US        |        63 | NS      | $28590.66     | 1.01%             |  |  |  | No            |                  1 | On Loan: No      |
| TaskUS Inc                             | TaskUS Inc                             | CUSIP: 87652V109<br>LEI: 549300VFPOK2Y6GLWE32 | Long             | EC               | CORP              | US        |      3030 | NS      | $40420.20     | 1.42%             |  |  |  | No            |                  1 | On Loan: No      |
| TEGNA Inc                              | TEGNA Inc                              | CUSIP: 87901J105<br>LEI: 549300YC5EDBGX85AO10 | Long             | EC               | CORP              | US        |      7044 | NS      | $138555.48    | 4.88%             |  |  |  | No            |                  1 | On Loan: No      |
| Union Pacific Corp                     | Union Pacific Corp                     | CUSIP: 907818108<br>LEI: 549300LMMRSZZCZ8CL11 | Short            | EC               | CORP              | US        |      -423 | NS      | $-93216.51    | -3.28%            |  |  |  | No            |                  1 | On Loan: No      |
| VERINT SYSTEMS INC                     | Verint Systems Inc                     | CUSIP: 92343XAC4<br>LEI: 549300KEQJS5FRVUCO94 | Long             | DBT              | CORP              | US        |     34000 | PA      | $33571.94     | 1.18%             | 2026-04-15      | Fixed         | 0.25%                 | No            |                  2 | On Loan: No      |
| WOLFSPEED INC                          | Wolfspeed Inc                          | CUSIP: 977852AS1<br>LEI: N/A                  | Long             | DBT              | CORP              | US        |      2586 | PA      | $2196.29      | 0.08%             | 2031-06-15      | Fixed         | 7.00%                 | No            |                  2 | On Loan: No      |
| Wolfspeed Inc                          | Wolfspeed Inc                          | CUSIP: 97785W106<br>LEI: N/A                  | Long             | EC               | CORP              | US        |       214 | NS      | $5632.48      | 0.20%             |  |  |  | No            |                  1 | On Loan: No      |
| MAK ACQUISITION CORP                   | MAK ACQUISITION CORP                   | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | KY        |       750 | NS      | $6.70         | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| Mak Acquisition Corp                   | Mak Acquisition Corp                   | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | KY        |      9900 | NS      | $99099.00     | 3.49%             |  |  |  | No            |                  1 | On Loan: No      |
| Options Clearing Corp.                 | TASKUS INC                             | CUSIP: 000000000<br>LEI: 549300CII6SLYGKNHA04 | N/A              | DE               |  | US        |        -1 | NC      | $-17.50       | -0.00%            |  |  |  | No            |                  1 | 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      |
| Alchemy Investments Acquisition Corp 1 | Alchemy Investments Acquisition Corp 1 | CUSIP: 000000000<br>LEI: N/A                  | Long             | EC               | CORP              | KY        |     16111 | NS      | $187854.26    | 6.61%             |  |  |  | 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      | $98.82        | 0.00%             |  |  |  | No            |                  1 | On Loan: No      |
| James Hardie Industries PLC            | James Hardie Industries PLC            | CUSIP: 000000000<br>LEI: 635400NSGXKTVOO7JU45 | Long             | EC               | CORP              | IE        |      3215 | NS      | $67289.95     | 2.37%             |  |  |  | No            |                  1 | On Loan: No      |
| Noble Corp PLC                         | Noble Corp PLC                         | CUSIP: 000000000<br>LEI: 549300I3HBUNXO0OG954 | Long             | EC               | CORP              | GB        |       303 | NS      | $8893.05      | 0.31%             |  |  |  | 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      | $56.13        | 0.00%             |  |  |  | No            |                  2 | On Loan: No      |
| CyberArk Software Ltd                  | CyberArk Software Ltd                  | CUSIP: 000000000<br>LEI: 529900YEXNDM894PWS93 | Long             | EC               | CORP              | IL        |       250 | NS      | $130195.00    | 4.58%             |  |  |  | No            |                  1 | On Loan: No      |

### Signature

**Date Signed:** 2025-12-22

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

**Signature:** Stephen Atkins

**Name of Signer:** Stephen Atkins

**Title:** Treasurer