Oatley & Diak, LLC logo

Oatley & Diak, LLC

Updated today

Client assets under management

$30,472,436

Clients

44

100% high-net worth

Advisors

2

of 2 employees

Firm type

Supported

1-3 advisors or $200M+ in AUM

Clients per advisor

22

Low

Average account size

$692,555

About

Oatley & Diak, LLC provides financial planning and investment management to individuals, families, trusts and family businesses, offering comprehensive financial planning, individual plans, implementation and ongoing asset monitoring. The firm manages about $30.5 million across 44 client households, reflecting a focus on higher‑asset households rather than a broad retail client base.

Portfolios are built on a client‑by‑client basis using individual stocks and bonds, exchange‑traded funds, no‑load and actively managed mutual funds, with strategic asset allocation informed by fundamental analysis and manager research. Account supervision is typically discretionary and is guided by documented goals, risk tolerance and periodic reviews; the firm does not employ model portfolios or composites to present results.

Distinctive practices include a regular monthly client newsletter with third‑party educational articles and firm correspondence and the availability of concierge and special‑project planning engagements for non‑standard needs. The firm operates on a fee‑only basis (no commissions, soft‑dollar benefits, or referral fees), provides quarterly performance reports and net‑worth summaries that incorporate approximations for hard‑to‑price assets.

Client services

Financial planning Portfolio management Newsletters or periodicals Financial consulting

Expertise

Divorce financial planning Family Business Charitable giving & philanthropy Cash flow / budgeting

Fee options

Fixed

Comprehensive and Individual Financial Planning fees based on client complexity and engagement letter; Individual Financial Planning fees paid in installments (25% signing, 25% within 30 days, 50% completion).

Percentage

$0 - $1,000,000: 1.00% $1,000,001 - $3,000,000: 0.70% $3,000,001 - $5,000,000: 0.50% $5,000,001+: Negotiable

Project-based

Senior planners billed at $300/hour, associate planners at $150/hour, non-planner staff at $50/hour.

Other

Fee-only: Fees are negotiable and based on asset under management percentage tiers, hourly charges, fixed fees, and retainers.

Main office location

Oatley & Diak, LLC

18801 East Mainstreet, Suite 240

Parker CO 80134, United States

Number of offices

1

Most active in

Colorado

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

John D

CFP®, Series 65

Englewood, CO

Oatley & Diak, LLC

John Diak is a CFP® with 19 years of industry experience and has been with Oatley & Diak, LLC since 2006. He serves as the sole advisor at the firm based in Englewood, Colorado. In addition to his advisory role, he holds a paid position as a town councilman in Parker, Colorado. Oatley & Diak, LLC provides financial planning and investment management services to individuals, families, trusts, and family businesses, focusing on higher-asset households. The firm builds customized portfolios using a combination of individual securities and mutual funds, with discretionary account supervision guided by client-specific goals and risk tolerance.

Divorce financial planning Family Business Charitable giving & philanthropy Cash flow / budgeting
user avatar

Noelle D

Series 63, Series 65

Englewood, CO

Oatley & Diak, LLC

Noelle Diak is a financial advisor at Oatley & Diak, LLC with 23 years of industry experience. She holds Series 63 and Series 65 designations and has operated her firm since 2003. Outside of her advisory work, she runs a home daycare. Oatley & Diak, LLC provides financial planning and investment management services to individuals, families, trusts, and family businesses. The firm focuses on customized portfolios for higher-asset households, utilizing individual securities and funds with a strategic asset allocation approach based on fundamental analysis and manager research.

Divorce financial planning Family Business Charitable giving & philanthropy Cash flow / budgeting
Warmer team member

Not sure where to start?

We'll help you think it through – whether you ultimately need an advisor or not.

Call (201) 292-4557

Warmer provides personalized recommendations and introductions to independent fiduciary advisors. We do not supervise advisors, manage or hold assets, guarantee performance, or provide advice about specific investments.

Each advisor listed on our site is an independent fiduciary responsible for their own advice. Warmer may receive fees from advisors for participation or referrals; these fees are paid by advisors and do not affect the fees clients pay for advisory services.

For advisor listings, we rely on sources including public filings and data provided by advisors, and we cannot guarantee that all information is current or accurate. Please review an advisor's Form ADV and do your own diligence before entering into an advisory relationship.

By using our service, you agree to Warmer's Terms of Service and Advisory Agreement and Privacy Policy. Logos provided by Logo.dev

© 2026 Warmer Holdings Inc. ("Warmer")