---
kind: "unit"
title: "17"
title_heading: "Commodity and Securities Exchanges"
key: "chII/part255"
level: "part"
label: "Part 255"
heading: "Proprietary Trading and Certain Interests in and Relationships with Covered Funds"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/17/chII-part255"
sections_count: 18
---

# Part 255 — Proprietary Trading and Certain Interests in and Relationships with Covered Funds

Title 17 C.F.R. — Commodity and Securities Exchanges › Chapter II — Securities and Exchange Commission

## Contents

- [Subpart A — Authority and Definitions](/cfr/17/chII-part255-subpartA.md)
- [Subpart B — Proprietary Trading](/cfr/17/chII-part255-subpartB.md)
- [Subpart C — Covered Funds Activities and Investments](/cfr/17/chII-part255-subpartC.md)
- [Subpart D — Compliance Program Requirement; Violations](/cfr/17/chII-part255-subpartD.md)