Big Sioux Wealth Management logo

Big Sioux Wealth Management

Updated today

Client assets under management

$229,018,329

Clients

843

29% high-net-worth

Advisors

5

of 7 employees

Firm type

Team

5-30 advisors or >$500M in AUM

Clients per advisor

169

Very High

Average account size

$271,671

About

Big Sioux Wealth Management provides discretionary and non‑discretionary asset management, ERISA 3(21) retirement-plan advisory, and financial planning to individuals, high‑net‑worth clients, trusts, estates, charitable organizations, and business entities. The firm delivers ongoing portfolio monitoring, suitability assessments, and tailored investment strategies based on clients’ goals, time horizons, and risk tolerance.

Big Sioux combines adviser-led relationship management with a turnkey asset management platform operated by GeoWealth, where GeoWealth provides portfolio management support, trading, reporting, and back‑office services while Big Sioux retains primary advisory responsibility. Clients may grant discretionary trading authority or choose non‑discretionary engagements, and accounts and model portfolios are reviewed on a periodic basis with documentation of client objectives and restrictions.

Distinctive elements include the firm’s ownership connection to Reliabank Dakota, an uncommon banking affiliation for firms of this size, and disclosures that certain personnel also engage in broker‑dealer and insurance activities. The brochure also highlights a relatively large client roster given its five advisors and the firm’s practice of offering public, fee‑free educational seminars, and it discloses the GeoWealth platform’s BlackRock relationship as a potential platform incentive that the firm manages through disclosures and procedures.

Client services

Financial planning Portfolio management Pension consulting Selection of other advisers Educational seminars or workshops

Expertise

Wealth management Retirement plans for business owners (SEP, solo 401k)

Occupation focus

Founder/Business Owner Retired

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Fee options

Fixed

Flat fees may be charged for ERISA Plan services; specific amounts not detailed.

Percentage

$0 - $100,000: 1.45% $100,001 - $200,000: 1.35% $200,001 - $500,000: 1.10% $500,001 - $750,000: 1.05% $750,001 - $1,000,000: 0.90% $1,000,001 - $3,000,000: 0.80% $3,000,001 - $6,000,000: 0.70% $6,000,001+: 0.65%

Commissions

Division President receives external compensation as a registered representative of Gradient Securities, LLC

Project-based

$250 per hour for financial planning and consulting services

Other

Account minimum: $100,000 Fee-only: $250 per hour for financial planning and consulting services

Main office location

Big Sioux Wealth Management

1401 4 Th St Ne

Watertown SD 57201, United States

Number of offices

2

Most active in

Arizona · Florida · Iowa · Minnesota · North Dakota · South Dakota · Texas

Disclosures

Exclamation point means they have disclosures of this type. Check mark means no disclosures of this type were found.

Business activities & affiliations

Advisors at this firm

user avatar

Thomas M

Series 65

Watertown, SD

Big Sioux Wealth Management

Thomas Mattingly is a financial advisor at Big Sioux Wealth Management with two years of industry experience. He holds a Series 65 credential and previously worked for 14 years with the Watertown School District. Mattingly also serves as a basketball and football coach at Watertown High School. Big Sioux Wealth Management provides portfolio management, financial planning, and retirement plan advisory services to individuals, high-net-worth clients, trusts, estates, charitable organizations, and businesses. The firm offers tailored investment programs and educational seminars, serving over 1,100 clients with approximately $200.7 million in assets under management.

Wealth management Retirement plans for business owners (SEP, solo 401k) Founder/Business Owner Retired
user avatar

Connie S

Series 65, Series 66

Watertown, SD

Big Sioux Wealth Management

Connie Streff is a financial advisor at Big Sioux Wealth Management in Watertown, SD, holding Series 65 and Series 66 licenses with two years of industry experience. Prior to joining Big Sioux Wealth Management, she worked at Peschl & Associates, Inc. and spent over a decade with the South Dakota Division of Insurance and Securities. Big Sioux Wealth Management offers portfolio management, financial planning, and retirement plan advisory services to a diverse client base including individuals, high-net-worth clients, trusts, and charitable organizations. The firm uses a tailored investment approach combining fundamental and technical analysis and supports a large client base through a scaled servicing model.

Wealth management Retirement plans for business owners (SEP, solo 401k) Founder/Business Owner Retired
user avatar

Dustin P

CFP®, Series 63, Series 65

Watertown, SD

Big Sioux Wealth Management

Dustin Padgett is a CFP® with 27 years of experience in the financial services industry. He is currently with Big Sioux Wealth Management, where he has worked since 2019, and previously spent 19 years at Raymond James Financial Services. Padgett also holds Series 63 and Series 65 licenses. Big Sioux Wealth Management provides portfolio management, financial planning, and retirement plan advisory services to individuals, high-net-worth clients, trusts, estates, charitable organizations, and businesses. The firm combines fundamental and technical analysis with tailored investment programs and serves over 1,100 clients with approximately $200.7 million in assets under management.

Wealth management Retirement plans for business owners (SEP, solo 401k) Founder/Business Owner Retired
user avatar

Aidynn L

Series 65

Watertown, SD

Big Sioux Wealth Management

Aidynn Lenards is a financial advisor at Big Sioux Wealth Management in Watertown, SD, holding a Series 65 credential. He has one year of industry experience, with prior roles at Reliabank Insurance, Aflac, First Bank and Trust, and the Lenards Agency. Outside of finance, he has worked part-time in customer service at Cattail Crossing Golf Course. Big Sioux Wealth Management provides portfolio management, financial planning, and retirement plan advisory services to individuals, trusts, charitable organizations, and business entities. The firm offers tailored investment programs and educational seminars, serving over 1,100 clients with approximately $200.7 million in assets under management.

Wealth management Retirement plans for business owners (SEP, solo 401k) Founder/Business Owner Retired
user avatar

Mc Kay P

CFP®, Series 63, Series 66

Watertown, SD

Big Sioux Wealth Management

Mc Kay Parr is a CFP® with nine years of experience in financial services. He has worked at Big Sioux Wealth Management since 2019 and previously held positions at Raymond James Financial Services and Charles Schwab. Big Sioux Wealth Management provides portfolio management, financial planning, and retirement plan advisory services to individuals, high-net-worth clients, trusts, estates, charitable organizations, and businesses. The firm offers customized investment programs using fundamental and technical analysis, and supports a large client base with a scaled servicing model.

Wealth management Retirement plans for business owners (SEP, solo 401k) Founder/Business Owner Retired
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