One Oak Capital Management, LLC has built its reputation on more than investment performance. The New York-based registered investment adviser, founded in 2013, delivers institutionally oriented investment strategies through separately managed accounts and commingled investment vehicles. The firm's approach centers on understanding client objectives, maintaining disciplined portfolio management, and providing transparent access to fixed income expertise.
One Oak Capital Management serves individuals, high net worth investors, trusts, estates, endowments, charitable organizations, corporations, and other business entities. The firm specializes in investment grade bond portfolio management, focusing on two primary objectives: absolute return or tax-free income.
Your relationship with One Oak begins with a clear assessment of which objective aligns with your situation. The firm structures its SMA strategies to address specific client goals and tax considerations. This personalized approach acknowledges that no single investment strategy fits every investor's needs.
The firm's portfolios can be tailored to your desired duration and income requirements. You maintain custody of bonds at any custodian of your choice, providing flexibility and control over your assets. This customization extends to state-level tax considerations, with portfolios that can be designed to match individual state requirements for tax efficiency.
CEO and Chief Investment Officer Stephen DiTursi brings 40 years of industry experience to portfolio risk management. His background includes leadership roles at Stone & Youngberg as Head of Fixed Income Trading & Sales, and positions at Morgan Keegan, Keefe Bruyette and Woods, and Gruntal & Co. This depth of experience informs the firm's approach to structuring portfolios that balance return objectives with appropriate risk parameters.
CFO and Chief Compliance Officer Joanne Costantini manages client onboarding and investment reporting. With 30 years in the municipal industry, she oversees the implementation of administrative activities that support your investment experience. Her background includes client service management at THB Asset Management and Armstrong Shaw Associates, where she drove business development and operational excellence.
One Oak Capital Management provides discretionary investment advisory services. The firm receives authority to select securities and determine amounts for purchase and sale, exercising this discretion consistent with your stated investment objectives.
Senior Portfolio Manager Neil Crabb leads the team of bond specialists responsible for portfolio construction and risk management for the firm's hedged municipal strategies. He joined One Oak in 2017 and oversees the firm's municipal research process and trading systems, bringing 34 years of industry experience to daily portfolio management decisions.
The firm's investment approach captures value opportunities in investment grade municipal and corporate bond markets. Portfolio Manager Keith Cronin oversees corporate bond portfolios, focusing on security selection and hedging characteristics. He joined One Oak in 2014 with 31 years of industry experience, including roles as Director of Fixed Income at Oppenheimer & Co. and Fixed-Income Trader at JVB Financial.
Portfolio Manager Michael DiTursi actively manages investment portfolios containing municipal and corporate bonds. He identifies investment opportunities by analyzing economic indicators and tracking interest rate trends. His experience on interest rate derivative desks at Sumitomo Mitsui Banking Corporation and Morgan Stanley provides insight into fixed income market dynamics.
Joseph H. Marren serves as Head of Research, overseeing research strategy across all sectors and asset classes. He brings 49 years of industry experience, including 23 years in senior M&A roles at Citigroup, Credit Suisse, Donaldson Lufkin & Jenrette, and Sagent Advisors. Prior to joining One Oak, he served as President, CEO, and CIO of KStone Partners LLC, managing funds-of-hedge funds focused on municipal securities.
The portfolio management team uses security analysis methods including economic, fundamental, technical, and cyclical analysis. Primary information sources include Bloomberg research, corporate rating services, annual reports, prospectuses, SEC filings, and financial publications.
One Oak's separately managed account approach aims to provide transparency, liquidity, and control over your portfolio. Unlike commingled funds where you own shares of a pooled vehicle, SMAs give you direct ownership of individual securities.
You can review your specific bond holdings at any time. The portfolios consist of high-quality investment grade bonds, with continuous credit monitoring to prioritize capital preservation and risk mitigation. This structure allows you to see exactly what securities you own and understand the credit quality of each position. (Disclaimer: Bond ratings, which typically range from AAA/Aaa (highest) to D (lowest), are assigned by credit rating agencies such as Standard & Poor's, Moody's and/or Fitch, as an indication of an issuer's creditworthiness. "Investment-Grade" bonds are typically rated Baa (Moody's)/BBB (S&P and/or Fitch) or above.)
The firm's laddered approach spreads bonds across varied maturities, ensuring steady cash flow. As bonds mature, proceeds can be reinvested based on current market conditions and your updated objectives. This systematic reinvestment process provides natural portfolio evolution without requiring complete restructuring.
One Oak Capital Management claims compliance with the Global Investment Performance Standards (GIPS). The firm has been independently verified for periods from 2019 through 2022, providing assurance that performance calculations follow industry standards.
(Disclaimer: One Oak Capital Management, LLC claims compliance with the Global Investment Performance Standards (GIPS ®). The performance results presented are based on the firm's Municipal SMA Strategy Composites and are shown net investment management fees and all other expenses. Past performance is not indicative of future results. For a complete GIPS® compliant presentation and/or a list of composite descriptions, please contact One Oak Capital Management at 914-205-5821. GIPS® compliance refers to adherence to the Global Investment Performance Standards, which establish ethical principles for calculating and presenting performance. It does not imply SEC endorsement.)
The SMA structure can also offer tax advantages. You realize gains and losses at the individual security level, allowing for strategic tax-loss harvesting.
Miranda Crabb joined One Oak in 2024 to lead Investor Relations and business development. She focuses on developing new client relationships while nurturing the existing client base. Her background as Director at Baylor Scott and White Quality Alliance brings experience in building and maintaining client relationships across complex organizations.
One Oak's laddered portfolio structure provides built-in flexibility as your needs evolve. The firm actively manages portfolios rather than implementing static buy-and-hold strategies. This approach allows for adjustments based on market conditions and changes in your personal situation.
The Enhanced Municipal Portfolio capitalizes on the idiosyncratic nature of the municipal market through a diversified portfolio of high credit quality bonds. The strategy targets investors seeking tax-advantaged income, with customization available for state-level tax considerations.
The Enhanced Taxable Municipal Portfolio supplements municipal exposure with corporate bonds, seeking a combination of attractive taxable income and total return. This strategy targets investors whose tax situation makes taxable income more appropriate than tax-exempt income.
The Enhanced Short-Duration Municipal Portfolio consists of short-duration, high credit quality bonds designed for investors seeking low volatility and attractive tax-advantaged yields. This option aims to serve clients who need stability and shorter time horizons.
Senior Portfolio Manager James Kim brings experience from his role as CIO and Chairman of the Investment Committee for Alternative Capital Advisers. He previously conducted investment due diligence across various strategies at Terrapin Asset Management and worked in investment banking at Chardan Capital Markets and Deutsche Bank. His background in evaluating different investment approaches informs the firm's ability to adapt strategies to client needs.
Portfolios can be fully customized by duration, management style, and income requirements. As bonds mature or market conditions create opportunities, the portfolio management team can adjust holdings to maintain alignment with your objectives. This ongoing active management distinguishes One Oak's approach from passive or index-based strategies.
One Oak Capital Management's investment performance has earned recognition from independent rating services. The Enhanced Municipal Portfolio received Zephyr's PSN Top Gun award for Top 10 returns in the three-year and five-year periods ending September 30, 2025, within the PSN Municipal Universe of 213 strategies across 98 firms.
The Enhanced Taxable Municipal Portfolio earned similar recognition. The strategy received PSN Top Gun awards for Top 10 returns in the one-year, three-year, and five-year periods ending September 30, 2025, in the PSN Municipal Universe. The portfolio also earned Top Gun recognition in the PSN Intermediate Maturity Universe and PSN US Fixed Income Universe.
The firm's strategies have received Morningstar ratings, with the Enhanced Municipal Portfolio earning a 5-star rating and the Enhanced Taxable Municipal Portfolio receiving a 3-star rating. The Enhanced Short-Duration Municipal Portfolio also holds a 3-star Morningstar rating.
(Disclaimer: References made to awards/rankings are not an endorsement by any third party to invest with One Oak and are not indicative of future performance. Investors should not rely on awards/rankings for any purpose and should conduct their own review prior to investing. Zephyr/PSN is an asset and wealth management software marketed by Informa (LSE: INF). PSN is a database of Separately Managed Accounts managed by Zephyr. One Oak does not compensate Zephyr for inclusion in the PSN database, nor does it compensate Zephyr for consideration for, or awarding of, the PSN Top Gun designation. The Morningstar Rating for Funds, often called the Star Rating, is a data-driven rating that measures the past performance of a fund in comparison to peers. One Oak has purchased the Morningstar Basics Package, which grants One Oak the permission to feature its Morningstar Rating in marketing materials. This purchase, renewed on an annual basis, has a value of $6,885.06)
These awards reflect the portfolio management team's ability to identify value opportunities within investment grade fixed income markets. The firm's specialized focus on municipal and corporate bonds allows for depth of expertise in these specific market segments.
The firm provides investment advisory services on a discretionary basis through separately managed accounts and commingled investment vehicles designed for institutional and sophisticated investors.
One Oak Capital Management combines institutional investment strategies with a structure designed for individual investors. The firm employs strategies typically available only to large institutional investors, making them accessible through separately managed accounts.
The team's collective experience spans major financial institutions. Stephen DiTursi's background includes positions at Stone & Youngberg, JVB Financial Group, Morgan Keegan, Keefe Bruyette and Woods, and Gruntal & Co. Neil Crabb worked at Hilltop Securities (formerly Southwest Securities), Associated Brokers, and International Exchange Brokers before joining One Oak.
This institutional heritage informs the firm's approach to risk management. The portfolio management team integrates a disciplined risk management framework with value identification in investment grade bond markets. This combination aims to deliver returns while maintaining appropriate risk controls.
One Oak Capital Management, LLC operates from Purchase, New York, providing services to individuals, institutions, and registered investment advisers. The firm's focus on fixed income solutions reflects its specialization in municipal and corporate bond markets.
For investors seeking tax-advantaged income or absolute returns through fixed income strategies, One Oak offers customized separately managed accounts with transparency and direct ownership of securities. The firm's experienced portfolio management team, combined with its institutional approach and personalized service structure, creates a distinctive offering in the fixed income investment management space.
For more information or to discuss your investment objectives, visit the Contact Us page or explore One Oak's latest Market Insights.
