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Ethan Oetter

Advisor at Long River Investment Management LLC

Updated today
Long River Investment Management LLC logo

Firm

Long River Investment Management LLC

Location

St. Louis, MO

Credentials

Series 65

Industry experience

7 years

About

Ethan Oetter is a financial advisor at Long River Investment Management LLC with seven years of industry experience. He holds a Series 65 designation and has previously worked at Twin Springs Investments, LLC, where he continues to provide contract administrative support. Long River Investment Management LLC is an independent, single-advisor firm managing approximately $71.8 million across various client types, including individuals, trusts, and institutions. The firm employs a dual-strategy approach combining concentrated value stock selection with ETF-based global diversification, emphasizing long-term, tax-efficient portfolio management tailored to client objectives.

Client services

Based on Long River Investment Management LLC

Portfolio management

Expertise

Based on Long River Investment Management LLC

Active portfolio management Passive / index investing Tax-loss harvesting

Fee options

Percentage

0.75% annually

Other

Account minimum: $1,000,000

Location

St. Louis, MO

Most active in

Florida · Missouri · South Carolina · Texas

Work history

Long River Investment Management, LLC

2025 - Present (1 year)

Twin Springs Investments, LLC

2019 - Present (7 years)

Long River Investment Management LLC

2018 - 2025 (7 years)

Twin Springs Investments, LLC

2017 - 2019 (2 years)

Unemployed

2017 - 2017 (1 year)

RunTide Capital Management, LLC

2017 - 2017 (1 year)

Yale School of Management

2015 - 2017 (2 years)

Disclosures

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

Business activities & affiliations

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Bruce K

Series 65

Fenton, MO

Midwest Investment Advisors, LLC

Options & derivatives strategies Real estate investing Annuities
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Richard M

Series 65

Saint Louis, MO

Midwest Advisors LLC

Real estate investing Options & derivatives strategies
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Monica G

Series 63, Series 66

Saint Louis, MO

Integra Wealth Advisors

General tax planning
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Michael P

PFS™, Series 63, Series 65

Saint Louis, MO

Michael Piper, LLC

Retirement income strategy Roth conversion strategy Social Security optimization Charitable giving tax strategies

Ryan B

CFP®, CFA®

St. Louis, MO

Rising Tide Wealth Advisory Solutions LLC

With nearly 25 years of experience in investment research, portfolio management, and advisory operations, I founded my RIA to provide expert guidance to financial advisors and investors. As a CFA Charterholder, CERTIFIED FINANCIAL PLANNER™, and Accredited Investment Fiduciary (AIF®), my goal is to simplify the complexities of investing and help clients make informed decisions about stocks, bonds, mutual funds, ETFs, annuities, alternatives, and private investments. For advisors, I offer tailored support for creating model portfolios, conducting investment committee meetings, and developing retirement plan strategies, all aimed at enhancing advisor-client relationships and delivering better outcomes. Over the years, I’ve worked in various roles, from equity research and fixed income trading to serving as the de-facto Chief Investment Officer for a large RIA. My services cover a wide range of needs, including life insurance analysis, capital gains budgeting, structured product and annuity evaluations, options-based strategies for individual stock positions, IPS reviews, enhanced prospect conversions, and the development of customized model portfolios. I pride myself on providing data-driven insights to help advisors improve their practices, better serve their clients, and grow their businesses. In addition to my professional work, I enjoy spending time with my wife and four kids, golfing, traveling, coaching youth sports, and mentoring students. I’m passionate about investing in future generations and advancing the fields of finance and investing. My technical expertise, combined with a personal approach, allows me to work alongside advisors to elevate their client offerings, streamline operations, and achieve lasting success.

Business ownership considerations Business Financial Management Tax strategies for small businesses Founder/Business Owner
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Stephen Z

Series 63, Series 65

St. Louis, MO

Viagem, LLC

ESG / Sustainable investing
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