Jonathan David Sopher (CRD#2135228) and STIFEL, NICOLAUS & COMPANY, INCORPORATED

We protect investors rights

The brokerage industry reports any customer complaints made against or involving a broker on their publicly available Brokercheck Report. These reports are essential for transparency in the financial industry.

Our securities attorneys are seeking to speak with former customers regarding potential investment-related claims. If you have concerns about securities sold to you by this broker, contact Halling & Cayo, S.C. today.

Claim(s) Made Against Jonathan David Sopher:

Claim Date: 1/14/2026

“Customer alleges registered representative made an unsuitable investment recommendation and failed to consider customer‘s liquidity needs.”

This claim, as of this posting, is currently Denied.

See more information on FINRA’s BrokerCheck site for Jonathan David Sopher.

Were you a customer of Jonathan David Sopher?

Brokerage firms have the responsibility to oversee all representatives who are registered with their firm, including Jonathan David Sopher, and must ensure that they adhere to all securities rules, regulations, and internal policies. If a brokerage firm fails to do so, it may be held responsible for investment losses sustained by customers due to a lack of supervision.If you were a client of Jonathan David Sopher and STIFEL, NICOLAUS & COMPANY, INCORPORATED from NEW YORK, NY, and experienced any issues or problems, the Securities Lawyers at Halling & Cayo, S.C. are interested in discussing the possibility of a claim with you. (A further explanation is here, My Financial Advisor lost my money, what now?.)

The investment recovery lawyers at Halling & Cayo S.C. bring claims on behalf of individual investors or groups of investors who have lost funds. Most of these customers have signed FINRA arbitration agreements that outline the process for resolving disputes, including claims for investment loss recovery. (See our discussion of FINRA in our video, Is FINRA a good thing?.) As the SEC advises, it is important to find an attorney who has experience handling securities complaints. If you were a customer of Jonathan David Sopher and STIFEL, NICOLAUS & COMPANY, INCORPORATED and experienced investment losses, please get in touch with the Securities Lawyers. We only receive payment if we can recover your money. Please note that there may be time limits or statutes of limitations that apply to your claim, so it is important to contact an attorney as soon as possible.
Learn about potential claims for investment recovery, Types of Broker Misconduct and Fraud , or about the FINRA arbitration process, Guide to the FINRA Arbitration Process .

Contact The Securities Lawyers

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Sean M. Sweeney is a shareholder at Halling and Cayo, a full service law firm in Milwaukee, WI and the head of its Securities Litigation team.

He represents individual and institutional investors in FINRA arbitration and court nationwide. He recovers investment losses from fraud or breach of duty from their broker-dealer.

Contact him at (414) 755-5020 or via e-mail at SMS@hallingcayo.com to see if he can help recover your funds.

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