Welcome to Carl M.Hennig.

A full-service brokerage firm serving
clients for more that 80 years.FINRA and SIPC member.

Carl m. Hennig

Carl m. Hennig inc. Was established in 1933. The company started out of carl hennig’s home and with his limited amount of savings at $500. Today both father and son, thomas and scot harenburg own the company. In 2011, carl m. Hennig inc. Purchased briggs-ficks securities.

Founded in 1933, we have succeeded through many world events, such as the great depression, wwii, the oil crisis in the 70’s, the s&l scandal, the internet bubble, september 11, 2001, and we are succeeding in today’s troubled times by using the values that we have had since the beginning. We are poised to charge forward to whatever lies ahead.

The company has 12 brokers with an average of 17 years experience per person. Carl m. Hennig inc. Serves clients throughout the world and oversees over 2,400 clients

What We Offer


Products & Services


Through Experience

With small to mid-cap firms.

Our brokers have extensive experience in both up and down markets and seek to use their knowledge to benefit clients.

  • Business Retirement Plans
  • Common Stocks
  • Corporate Bonds
  • Government Bonds
  • IRA’s
  • Managed Accounts
  • Money Market Funds
  • Municipal Bonds
  • Mutual Funds
  • Portfolio Reviews
  • Preferred Stocks
  • Institutional Business

FINRA Rule 2210

Get in touch with us

    Online Contact


    Carl M. Hennig, Inc. – Oshkosh
    206 N. Main St.
    Oshkosh, WI 54901

    Phone: 920.231.6630
    Fax: (920) 231-1883


    Carl M. Hennig, Inc. – Berlin
    295 N. Washington St.
    Berlin, WI 54923

    Phone: 920.361.0959