---
kind: "unit"
title: "17"
title_heading: "Commodity and Securities Exchanges"
key: "chIV/subchA/part403"
level: "part"
label: "Part 403"
heading: "Protection of Customer Securities and Balances"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/17/chIV-subchA-part403"
sections_count: 7
---

# Part 403 — Protection of Customer Securities and Balances

Title 17 C.F.R. — Commodity and Securities Exchanges › Chapter IV — Department of the Treasury › Subchapter A — Regulations under Section 15c of the Securities Exchange Act of 1934

## Sections

- [§403.1. Application of part to registered brokers and dealers.](/cfr/17/403.1.md)
- [§403.2. Hypothecation of customer securities.](/cfr/17/403.2.md)
- [§403.3. Use of customers' free credit balances.](/cfr/17/403.3.md)
- [§403.4. Customer protection—reserves and custody of securities.](/cfr/17/403.4.md)
- [§403.5. Custody of securities held by financial institutions that are government securities brokers or dealers.](/cfr/17/403.5.md)
- [§403.6. Compliance with part by futures commission merchants.](/cfr/17/403.6.md)
- [§403.7. Effective dates.](/cfr/17/403.7.md)