# EDGAR Filing Document

**Accession Number:** 0001742912
**File Stem:** 0001387131-23-000443
**Filing Date:** 2023-1
**Character Count:** 1951
**Document Hash:** 1f55c97b6faa519df86ce5ff0a049fc5
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001387131-23-000443.hdr.sgml**: 20230120

**ACCESSION NUMBER**: 0001387131-23-000443

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230120

**DATE AS OF CHANGE**: 20230120

**EFFECTIVENESS DATE**: 20230120

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Tidal ETF Trust
- **CENTRAL INDEX KEY:** 0001742912
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-227298
- **FILM NUMBER:** 23539550

**BUSINESS ADDRESS:**
- **STREET 1:** 234 WEST FLORIDA STREET, SUITE 203
- **CITY:** MILWAUKEE,
- **STATE:** WI
- **ZIP:** 53204
- **BUSINESS PHONE:** 844-986-7676

**MAIL ADDRESS:**
- **STREET 1:** 234 WEST FLORIDA STREET, SUITE 203
- **CITY:** MILWAUKEE,
- **STATE:** WI
- **ZIP:** 53204

## Series and Classes Contracts Data

### Ionic Inflation Protection ETF (Series ID: S000076008)

---

|  |  |  |
|:---|:---|:---|
| Class Name                     | Ticker Symbol | Class ID   |
| Ionic Inflation Protection ETF | CPII          | C000235433 |

---

## Series and Classes Contracts Data

### Ionic Inflation Protection ETF (Series ID: S000076008)

| Class ID   | Class Name                     | Ticker Symbol   |
|:---|:---|:---|
| C000235433 | Ionic Inflation Protection ETF | CPII            |

**Ionic Inflation Protection ETF (CPII)**

*listed on NYSE Arca, Inc.*

**January 20, 2023**

**Supplement to the**

**Statement of Additional Information ("SAI")** 

**dated June 10, 2022, as supplemented**

The Board of Trustees of Tidal ETF Trust, on behalf of the Ionic Inflation Protection ETF (the "Fund"), approved a change to the Fund's fiscal year end from March 31 to April 30. References to the Fund's fiscal year end throughout the SAI are hereby replaced with April 30.

**Please retain this Supplement for future reference.**