Oppenheimer & Co. has agreed to pay $70 million to settle claims that it shortchanged customers on the interest owed for cash sitting idle in their brokerage accounts. The case centers on a cash sweep program that automatically moves uninvested cash into interest-bearing bank deposits, and the lawsuit argued the firm paid participants less than New York law required. Unlike a settlement that mails checks on its own, this one pays only the customers who file a claim, and the deadline to do so is September 17. The amount each person collects depends on how many claims come in and how much cash they held.
What a cash sweep is and what went wrong
A cash sweep is a routine but often overlooked feature of a brokerage account. When cash is not invested, the firm automatically moves it into a bank deposit product so it earns some interest instead of sitting still. The complaint in this case focused on Oppenheimer’s Advantage Bank Deposit Program, the vehicle the firm used to hold that idle cash for eligible clients.
The lawsuit alleged that participants were not paid the interest they were actually owed. According to the plaintiffs’ announcement of the proposed settlement, the claim was that the firm violated New York law by failing to pay Advantage Bank Deposit Program participants the interest to which they were entitled on their swept cash. The dispute is part of a broader wave of scrutiny over how brokerages compensate customers for the cash that quietly accumulates in their accounts.
The firm did not admit that it did anything wrong. In its own statement, the company agreed to the $70 million payment to resolve the litigation rather than continue to contest it, a posture that leaves the legal questions unresolved but puts money on the table for affected customers. For a class member, the absence of an admission does not change eligibility; what matters is whether their account fell inside the defined program and period.
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Who qualifies and the September 17 filing deadline
The class is defined by participation in the program over a specific stretch of time. The settlement administrator identifies eligible members as Oppenheimer and Oppenheimer Asset Management customers who took part in the Advantage Bank Deposit Program between March 17, 2022, and May 22, 2026. A customer who held cash in that program at any point during those years is the person the settlement is built to reach.
The step that trips people up is that payment is not automatic. To receive money, a class member must submit a valid claim form by September 17, and a customer who qualifies but never files walks away with nothing. That requirement separates this settlement from automatic dividends and refund programs, where the money moves without any action, and it puts the burden on customers to recognize that their old idle cash may be owed a payment.
Because the class spans several years and two related brokerage entities, some eligible people may no longer think of themselves as Oppenheimer customers at all. The relevant question is not whether an account is still open today, but whether cash ran through the Advantage Bank Deposit Program during the class period, which is the fact a claimant is attesting to when they file.
The size of an individual recovery hinges on two variables a customer may never have tracked: how much cash sat in the program and for how long. A client who kept a large balance uninvested across the full class period stands to recover more than one who swept only small amounts briefly, because the alleged shortfall grows with both the balance and the time it went unpaid. That is why the settlement resists a single advertised number and pays by proportion instead, leaving each claimant’s share to be worked out after the filing window closes.
The claim, the court, and what a share is worth
The settlement is not final until a judge approves it, and the timing here is unusually tight. The final-approval hearing is scheduled for September 17 before Judge Jed S. Rakoff in the Southern District of New York, the same date the claim window closes. Practically, that means claimants should treat September 17 as a firm cutoff rather than wait to see how the hearing unfolds, since the deadline to file and the hearing fall on the same day.
What a valid claim is worth depends on the arithmetic of the fund. The $70 million is divided among approved claimants on a pro-rata basis after fees and administrative costs, so the payment scales with how much swept cash a customer held and how many people ultimately file. No fixed per-person figure has been published, and any promise of a set dollar amount should be viewed skeptically, because the number cannot be known until claims are tallied.
The larger takeaway is that idle cash is not a costless place to leave money, and the industry-wide fight over sweep interest is why. For Oppenheimer customers, the settlement converts a years-long dispute into a narrow, time-boxed opportunity: file by September 17 and share in $70 million, or let the date pass and collect nothing for the interest the lawsuit says was never paid.
This article was researched and drafted with the assistance of AI and reviewed by The Money Overview editorial team.
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