A pending customer arbitration disclosed on Michael S. Fisher’s FINRA BrokerCheck report raises questions about discretionary trading, account performance, and the tax consequences of investment decisions.

For investors reviewing similar concerns, the starting point is straightforward: compare what was explained with what the account records show.

What Does the Complaint Allege?

Fisher, CRD No. 4056114, is identified in a customer dispute involving Ameriprise Financial Services LLC. The arbitration was filed on September 12, 2026, under FINRA Case No. 26-01997.

The claimants allege unsuitable trading in discretionary accounts during 2025 that resulted in losses and significant tax liabilities. They also allege that Ameriprise misrepresented account performance, failed to disclose material tax consequences, improperly managed the accounts, breached fiduciary duties, and inadequately supervised their advisor.

The disclosure states that the claimants request between $500,000 and $1 million in compensatory damages. It lists the arbitration as pending. Fisher’s broker registration with Ameriprise ended in March 2026, and the report identifies him as not currently registered as a broker. (FINRA)

Questions to Ask About Discretionary Trading

If you are concerned about trading in an account managed on your behalf, begin by gathering the documents that describe the advisor’s authority.

For a consultation, consider these questions:

  • What investment objectives and restrictions did you communicate?
  • What authority did you give the advisor to trade?
  • Were potential tax consequences discussed before major sales?
  • Did the advisor’s performance summaries match your statements?
  • What explanation did you receive after raising concerns?

These are suggested review questions, not additional allegations about Fisher or Ameriprise.

Keep Investment Results and Tax Records Together

When preparing your records, keep the trading history alongside the related tax documents rather than reviewing either in isolation.

Useful materials include:

  • Account agreements and investment policy documents.
  • Monthly statements and trade confirmations.
  • Forms 1099 and other relevant tax records.
  • Emails discussing planned sales or tax concerns.
  • Performance reports supplied by the advisor.
  • Written complaints and the responses received.

Prepare a short timeline showing the transactions you question, what you were told, and when you first raised the issue. Ask counsel to evaluate the claimed losses and tax consequences separately.

Discuss Your Concerns With Sonn Law Group

If you experienced substantial losses in an account managed by Michael Fisher, contact Sonn Law Group to discuss your circumstances.

Ask for a review of the account records, trading authority, communications, potential responsibility, and applicable deadlines. The amount another customer requests should not be treated as an estimate of your own claim.

This article provides general information, not legal advice. Customer allegations are not findings of wrongdoing. Claimed damages are not an award, settlement estimate, or guarantee of recovery.