CastleKeep Investment Advisors LLC

Overview

CastleKeep Investment Advisors LLC is a Delaware limited liability company registered with the U.S. Securities and Exchange Commission.¹ The firm describes its advice as independent and individually tailored for select clients.¹ Its brochure states that it employed seven staff members as of March 26, 2025.¹

CastleKeep says it first develops an understanding of each client’s values and financial objectives before advising across financial needs.¹ Compensation comes solely from client paid fees, and the firm says it does not receive commissions on clients’ financial product purchases.¹

History

Charles W.K. Haberstroh founded CastleKeep in 2000 and serves as its President and Chief Executive Officer.¹ CKA Holdings LLC is identified as the majority owner of CastleKeep Investment Advisors LLC.¹ CKA Holdings LLC is a Delaware limited liability company that is 73 percent majority owned by Charles W.K. Haberstroh.¹

CKA Holdings LLC also owns CastleKeep Advisors LLC and CastleKeep Wealth Management LLC.¹ The brochure describes those companies as unregistered affiliates with no current business operations.¹

Timeline

1. 2000Haberstroh founded CastleKeep in 2000 and serves as its President and Chief Executive Officer.
2. 2025Its brochure states that it employed seven staff members as of March 26, 2025.

Leadership

Charles W.K. Haberstroh is President and Chief Executive Officer of CastleKeep Investment Advisors LLC.¹

Services

CastleKeep provides portfolio management on a discretionary or non discretionary basis.¹ Portfolio guidelines are established jointly with clients and may include restrictions on securities or security types.¹ The firm reviews portfolio performance with clients at least quarterly, with more frequent reviews available on request.¹

Investment advisory services are available to clients who want to remain hands on in detailed investment decisions.¹ Under this service, CastleKeep reviews client objectives and investments, presents suitable opportunities, and leaves the final decision with the client.¹

The firm offers money manager search services that identify independent registered investment advisers using factors such as account size, risk tolerance, client opinion, and the outside adviser’s investment philosophy.¹ Money manager monitoring compares an outside adviser’s performance with industry benchmarks and may lead to a recommendation to change managers, while the client decides whether to move.¹

Investment analysis may cover a portfolio or a specific security and may result in a written report of findings and conclusions.¹ With client approval, CastleKeep can coordinate with legal, tax, and other trusted advisers.¹

What the firm offers

• Investment management
• Tax planning

Client focus

CastleKeep identifies individuals, families, trusts and estates, high net worth individuals, private investment companies, corporations, and other business entities among its client types.¹ Portfolio management clients may include individuals, high net worth individuals, trusts, estates, corporations, and other business entities.¹

The minimum account size is $250,000, although the firm states that this minimum may be negotiable in some circumstances.¹

Investment philosophy and approach

The firm primarily uses qualitative and quantitative fundamental analysis.¹ Its fundamental analysis considers financial statements, management, competitive advantages, competitors, markets, and overall economic conditions.¹ CastleKeep says strategies are tailored to client objectives, income needs, risk appetite, tax situation, and other consultation factors.¹

Investment advice may cover money market instruments, equities, fixed income, mutual funds, hedge funds, derivatives, fund of funds, limited partnerships, private equity, commodities, and currencies.¹

CastleKeep offers a proprietary Low PE Strategy focused on equities with price to earnings ratios at or below selected sector medians and above average revenue and earnings prospects.¹ It also offers a proprietary Defensive Dividend Strategy targeting large cap multinational companies with dividend growth substantially above inflation.¹ The Defensive Dividend Strategy typically contains approximately 25 equities and has historically had very low turnover.¹

The firm states that it does not currently offer model portfolios or use composites to illustrate investment results.¹

Assets and minimums

CastleKeep reported approximately $827,741,951 in assets under management as of December 31, 2024.¹ Approximately $297,822,655 was discretionary assets and $529,919,296 was non discretionary assets as of that date.¹

Portfolio management and investment advisory fees are calculated as a percentage of assets under management and may be billed quarterly in advance or arrears.¹ The stated tiered annual fee schedule ranges from 1.500 percent on the first $1 million to 0.200 percent to 0.375 percent on assets above $100 million.¹

By the numbers

FAQs

Related resources

• LocationMultifamily offices in Westport

  This Westport directory page gives a local starting point for a family or business owner comparing advisory firms nearby. It can help place CastleKeep Investment Advisors LLC's Westport location and investment management and tax planning services within the area's broader multifamily office market.

• Network siteEstatePlanner.com

  EstatePlanner.com offers plain language guides on wills, trusts, and related estate matters. A reader considering CastleKeep's investment management and tax planning services can use these materials to identify estate topics to discuss with advisers and other professional advisers.

• GuideHow to choose a multifamily office

  This guide outlines factors a wealthy family or business owner may review when selecting a multifamily office. Its framework can help readers assess whether an adviser's investment management and tax planning scope fits their financial situation, location, ownership interests, and need for coordinated advice.

• GuideQuestions to ask a multifamily office

  These questions can help a prospective client prepare for an introductory conversation with a multifamily office. They may prompt discussion of investment management, tax planning, client types, adviser qualifications, fees, and how services apply to a family or business owner's circumstances.

• Similar firmsCHILTON INVESTMENT SERVICES, LLC
  HT Partners LLC
  Longwall Family Office

  Profiles for CHILTON INVESTMENT SERVICES, LLC, HT Partners LLC, and Longwall Family Office provide comparison points on the same site. Reviewing their listed locations and services can help a reader place CastleKeep Investment Advisors LLC's Westport base, investment management, and tax planning offerings in context.

Sources

1. CastleKeep Investment Advisors LLC Form ADV Part 2A , accessed October 23, 2026. Brochure dated March 26, 2025.

Claim or correct this profile

This profile is a factual summary written in our own words from public sources. It is for information only. It is not an endorsement, rating, ranking or recommendation, and it is not investment advice. MultiFamilyOffices.com is not affiliated with the SEC or with this firm unless stated. Form ADV figures are self-reported by the firm.