Marble Harbor Investment Counsel, LLC — 13F Portfolio

Marble Harbor Investment Counsel, LLC is an established registered investment advisory firm headquartered in Boston, Massachusetts, providing discretionary portfolio management and wealth advisory services to high-net-worth individuals, families, family offices, and institutional clients. The firm operates within Boston's distinguished financial community, drawing upon the city's deep tradition of investment management excellence and fiduciary stewardship. Filing with the SEC under CIK #0001387130, Marble Harbor maintains quarterly 13F disclosures documenting its U.S. equity holdings with a filing history extending across multiple market cycles. The firm operates under the leadership of Richard Merriam, who serves as Founder and Chief Investment Officer, directing investment strategy and portfolio construction with a philosophy emphasizing quality growth investing. William Dunn and Michael Mullin contribute as Partners and Portfolio Managers, providing analytical depth and portfolio management capabilities. This experienced partnership structure enables collaborative investment decision-making and distributed expertise across client relationships. The firm's nautical name evokes Boston Harbor and New England's maritime heritage, reflecting deep roots in the region's investment management tradition. The platform's 13F archive enables researchers to examine the firm's disclosed positions across numerous market cycles, providing meaningful longitudinal perspective on investment philosophy consistency.

Marble Harbor Investment Counsel employs a quality-growth investment philosophy emphasizing fundamental research and long-term ownership of well-managed businesses with sustainable competitive advantages and attractive appreciation potential. The firm's approach prioritizes companies demonstrating durable business models, strong returns on invested capital, capable management teams, and favorable industry positioning. This methodology reflects Boston's tradition of patient, research-intensive investment management focused on compounding wealth across extended time horizons. 13F Portfolio Composition analysis reveals diversified exposure across sectors with meaningful allocations toward technology, healthcare, and industrials where the firm has demonstrated recurring conviction. The technology emphasis reflects recognition of digital transformation trends and platform businesses generating substantial value creation. Healthcare allocations capture exposure to pharmaceutical, biotechnology, and medical device companies combining innovation with defensive characteristics. Industrial holdings provide exposure to manufacturing, infrastructure, and business services companies benefiting from economic activity and capital investment cycles. Sector Allocation History tracking demonstrates how strategic positioning has evolved while maintaining core quality-growth principles. The diversified structure avoids concentrated sector bets while allowing meaningful expression of conviction in areas where research insights support positioning. Top 10 Holdings Concentration metrics reveal position sizing discipline characteristic of wealth management approaches balancing conviction with appropriate diversification for preservation-minded clients. Portfolio turnover remains characteristically low, consistent with a patient investment philosophy that allows quality businesses to compound value without interruption from excessive trading.

Marble Harbor Investment Counsel, LLC represents an established Boston-based investment counsel practicing quality-growth investing with diversified sector exposure emphasizing technology, healthcare, and industrials. The firm's extensive 13F filing history documents a consistent investment approach reflecting Boston's distinguished tradition of patient, research-intensive portfolio management. The Merriam-Dunn-Mullin partnership structure provides experienced leadership with decades of combined investment expertise serving sophisticated private and institutional clients. The firm's longevity and consistent philosophy execution across multiple market cycles demonstrates durability and disciplined approach. Annualized Return (CAGR) calculations applied to reconstructed portfolio holdings enable researchers to assess long-term compounding behavior achieved through quality-growth discipline. Sharpe Ratio analysis provides risk-adjusted context for evaluating the efficiency of returns generated relative to volatility experienced. The platform's backtesting capabilities facilitate simulation of how disclosed positions would have performed across varying market environments. Historical Track Record analysis benefits from the firm's extensive filing history, providing statistically meaningful sample periods for evaluating investment approach consistency. Alpha Generation vs S&P 500 examination offers perspective on security selection and sector allocation contribution to returns over extended periods. Key analytical question: How has the firm's quality-growth philosophy navigated the significant factor rotations between growth and value regimes experienced since 2020, and does the disclosed portfolio structure reveal strategic consistency in quality focus or tactical adaptation to changing market leadership dynamics?

The risk characteristics of Marble Harbor Investment Counsel's disclosed holdings align with a quality-growth investment mandate designed to serve sophisticated wealth management clients with meaningful investment horizons. The emphasis on competitively advantaged businesses with strong financial characteristics typically provides resilience during market stress, as quality factor exposure offers defensive attributes when investor risk appetite contracts. Volatility Profile measurements derived from disclosed holdings reflect the diversified sector exposure with quality-growth orientation. The diversified sector allocation distributes risk across industries and economic sensitivities while the quality focus reduces exposure to financially fragile or speculative securities. Max Drawdown Depth analysis across the firm's extensive 13F filing history illuminates how the portfolio has navigated past market dislocations including the 2008 financial crisis, 2020 pandemic selloff, and 2022 correction. This multi-cycle perspective provides meaningful assessment of risk management consistency. Downside Capture Ratio examination quantifies the portfolio's defensive characteristics during equity market corrections relative to benchmark indices. Quality-growth portfolios typically demonstrate reduced downside participation during market stress while capturing meaningful upside during favorable conditions. The Boston investment management tradition emphasizes prudent stewardship aligned with client preservation objectives. The high-net-worth and family office client orientation influences portfolio construction priorities, with wealth preservation considerations complementing appreciation objectives appropriate for sophisticated multi-generational investors.