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Advisors / Texas / Mansfield
17yrs

Nathaniel Sizer

Financial advisor at J.P. Morgan Securities

Based in Mansfield, Texas, Nathaniel Sizer is a fiduciary financial advisor with 17 years of industry experience. Nathaniel joined J.P. Morgan Securities in 2024, a firm offering financial planning, investment management, and retirement plan consulting. The firm is paid through a percentage of assets.

One of 79 advisors with offices in Mansfield, and one of 76 fiduciaries.

Mansfield, TX 76063Fiduciary advisor

At a glance

Experience17 years (since 2009)
How that compares ?More experience than 74% of advisors at J.P. Morgan Securities
Office990 Walnut Creek Drive North, Mansfield, TX 76063
How the firm is paid ?Percent of assets, Other
Typical client at the firm ?$318,381
Advisors at the firm14,316
States licensed ?1 state

Services through J.P. Morgan Securities

Financial planningInvestment management for individuals and small businessesInvestment management for businesses and institutionsRetirement plan consultingChoosing other investment managers

Specialties, designations like CFP®, and languages spoken appear here when advisors claim their profiles.

Licenses

Exams passed, from the official record. Tap a license to see what it allows.

Series 63Uniform Securities Agent State Law Examination
Series 66Uniform Combined State Law Examination

Career

  1. Nov 2024 – now

Questions to ask Nathaniel

Tailored to Nathaniel’s registration and firm.

  1. At a firm this size, will I work with you directly or with a service team?
  2. What does a financial plan with you include, and how often is it updated?
  3. If you use outside managers, how are they chosen and what do they cost on top of your fee?
  4. Where would my money be held, and will I get statements directly from that firm?
  5. What would I pay in total each year, in dollars, including fund and trading costs?

My notes and scorecard

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About Nathaniel

How do I contact Nathaniel?

Call J.P. Morgan Securities at (800) 999-2000 and ask for Nathaniel Sizer. Nathaniel works from the Mansfield, TX office.

How long has Nathaniel been a financial advisor?

Nathaniel has been in the industry since 2009, about 17 years. More experience than 74% of advisors at J.P. Morgan Securities.

What licenses does Nathaniel hold?

Series 63, Series 66. Tap any license on this page to see what it allows.

Is Nathaniel a fiduciary?

Nathaniel is registered as an investment advisor representative, which carries a fiduciary duty when giving investment advice.

How is Nathaniel paid?

J.P. Morgan Securities reports being paid by a percentage of the assets they manage, other fees. Ask Nathaniel for your total yearly cost in dollars.

Official record as of October 3, 2026.

This profile is for information only and is not financial advice or a recommendation.

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