About Us

Professional Prime Brokerage

M.S. Howells & Co. is a boutique institutional broker-dealer based in Scottsdale, Arizona.

We service a select group of Registered Investment Advisers, institutional, and corporate clients, providing them with trading, prime brokerage, and hedge fund infrastructure. Additionally, the firm offers a wide variety of specialized client services including soft dollar arrangements, direct market access trading platforms, and outsourced trade desk services.


Our Path to Success
Over 15 Years Of Excellent Customer Service

M.S. Howells & Co. celebrated an impressive milestone in the financial industry by reaching over 15 years in business. Through excellent customer service and market adaptability, the firm has established itself as a lasting and steady presence.

M.S. Howells & Co. Moves Into Its Scottsdale Home Office

Addressing the need for a larger and more sophisticated facility, M.S. Howells & Co. moved into its current Scottsdale home office to house its growing staff.

M.S. Howells & Co. Opens For Business

Founder Mark Howells assembled a team of talented professionals, many of whom are still an integral part of the firm, and opened the doors at M.S. Howells & Co.

Why Choose Us?

A Focus on the Client

We have the tools and experience.

Whether you're just getting started or are an industry veteran, we can provide you the assistance, tools, and relationships you need. Some of the advantages we provide:

  • Full Service Trade Desk
  • Full Service Back Office
  • Risk Analysis Tools
  • Direct Market Access
  • Portfolio Reporting
  • Referral Network
  • Technology Assistance
  • Clearing Agreement with Pershing (BNY Mellon)
  • We're Registered with Finra and SIPC

Executive Leadership


Mark Howells

President, M.S. Howells & Co.
Over 35 years of industry experience.


Katrina Santa Maria

Chief Operating Officer, M.S. Howells & Co.
An industry veteran who's focused on the client.

mission & values

We care about doing things the right way.
  • 1.
    Focus on the details

    We understand and pay attention to our clients. It's our job to ensure our clients are getting the best service possible.

  • 2.
    Always just a phone call away

    Unlike other firms that will place you into a call maze, you will always have our direct phone extensions whenever you need us.

  • 3.
    Compliance Oriented

    We care about the rules that govern our industry which is why we adhere to best practices and perform independent audits regularly.