SEC Rule 15c3-3 — Customer Protection Rule

Overview

SEC Rule 15c3-3, the Customer Protection Rule, is one of the most critical regulations for broker-dealers that hold customer assets. It requires firms to safeguard customer funds and securities by maintaining them separately from the firm's proprietary assets. In the event of a broker-dealer's failure, this segregation ensures customers can recover their assets.

The rule has two core components: the possession or control requirement for customer securities, and the reserve formula requirement for customer cash.

Official citation: 17 CFR § 240.15c3-3

Who It Applies To

The Customer Protection Rule applies to all broker-dealers that carry customer accounts — that is, firms that hold customer funds or securities. Introducing brokers that fully clear through a carrying firm on a fully disclosed basis are generally exempt, as the carrying firm assumes the customer protection obligations.

Key Requirements

Possession or control: Broker-dealers must maintain physical possession or control of all fully paid and excess margin securities held for customer accounts.
Special Reserve Bank Account: Firms must deposit cash into a "Special Reserve Bank Account for the Exclusive Benefit of Customers" based on a weekly reserve formula computation.
Reserve formula: The computation (Rule 15c3-3a) calculates the net amount owed to customers and requires that amount to be held in the reserve account.
Frequency of computation: Traditionally weekly, but the 2024 amendment requires daily computation for firms with $500 million or more in average total credits.
Prohibited uses: Customer securities cannot be used for the firm's proprietary activities, and reserve account funds cannot be used for any purpose other than customer obligations.
Prompt close-out: Firms must take action to obtain possession or control of customer securities within prescribed timeframes.

Where Loffa Fits

Freefunds Verified Direct (FVD)

Letters of Free Funds come from Regulation T: FVD handles Letters of Free Funds, the written statements an executing broker may rely on under Regulation T 220.8(c)(2)(ii) to avoid a 90-day freeze on a cash account. Rule 15c3-3 doesn't mention them. See the Regulation T overview.

Recent Updates

2024: The SEC amended the rule to require daily reserve formula computation for firms with $500 million or more in average total credits. This change increases the frequency and accuracy of customer protection.
Enforcement focus: The SEC has maintained an active enforcement posture, particularly around failures to properly segregate customer securities and maintain adequate reserves.