Fundamental investing, grounded in what we know works
Great businesses often attract compelling stories. Our job is to look beyond them.
We focus on identifying the underlying characteristics that have historically defined exceptional companies and use those insights to guide where we look.
From there, we apply rigorous fundamental research to determine whether those qualities are truly present and durable.
By grounding our idea generation in what has historically characterized exceptional businesses—and then doing the hard fundamental work to test whether those qualities are actually present—we aim to invest in businesses whose long-term economics are far stronger than the market narrative suggests.
Great investments rarely emerge from randomness or market noise. We begin by focusing our attention on the characteristics that have historically defined exceptional businesses.
Our ongoing research into what defines great businesses over time helps us direct attention toward companies that share the characteristics of long-term compounders—strong underlying economics, improving fundamentals, and durable earnings power—before the market has fully recognized them.
This empirical approach does not replace judgment; it simply helps direct our attention toward the most promising areas of the market. By grounding our idea generation in observable patterns rather than narrative or consensus screens, we focus our research where the probability of uncovering a truly exceptional business is highest.
Once a company captures our attention, the work becomes intensely fundamental.
We conduct deep bottom-up research to understand the underlying economics of the business and the durability of its advantages. This includes mapping industry structure and competitive dynamics, assessing management’s capital allocation discipline and strategic thinking, and building detailed financial models that test how the business performs across a range of scenarios.
We complement this analysis with primary research—speaking with industry participants, customers, suppliers, and other informed observers. The goal is to develop an understanding that goes well beyond surface-level consensus, allowing us to see the business as owners rather than traders.
Research alone is not enough. An investment requires a differentiated insight.
We seek to identify where market perception diverges from underlying reality. This may involve recognizing a growth runway the market underestimates, understanding normalized earnings power obscured by temporary conditions, or identifying strategic shifts that are not yet widely appreciated.
In every case, we articulate a clear view of what the market may be misunderstanding, why that gap exists, and what could ultimately close it. Without a well-defined insight, no investment proceeds further in the process.
Every potential investment is evaluated through a disciplined underwriting framework.
We analyze the range of possible outcomes for the business and estimate the long-term value under different scenarios. Positions are initiated only when the potential reward meaningfully outweighs the risks.
When conviction is high and the opportunity is compelling, we are willing to concentrate capital. Our largest positions typically represent 5–10% of the portfolio, reflecting the belief that meaningful excess returns are generated by a relatively small number of exceptional investments.
Price discipline remains essential. Even great businesses can become poor investments when purchased without sufficient margin of safety.
An investment thesis must continually earn its place in the portfolio.
We maintain an ongoing review process that evaluates each holding against the original investment case. This includes monitoring operating performance, management execution, competitive developments, and changes in the broader industry landscape.
When the underlying thesis remains intact and the opportunity continues to offer attractive long-term returns, we maintain conviction through short-term volatility. When the thesis changes or the risk-reward balance shifts, we adjust or exit with discipline.
The goal is simple: ensure every position in the portfolio continues to deserve its place.
Risk management is not a separate function at Stonehouse—it is embedded in every stage of our process. We believe the greatest risk in concentrated investing is not volatility, but permanent impairment of capital from inadequate process discipline.
Portfolio construction is intentional and scenario-driven. Position sizes are calibrated to reflect the expected return, conviction level, and downside risk of each holding. Our highest-conviction ideas are sized at 5% to 10%, while earlier-stage research positions begin smaller and scale as conviction builds. We manage overall portfolio exposure across sectors, factors, and thematic concentrations to avoid unintended correlations. The result is a portfolio of 10 to 20 positions that is concentrated enough to generate meaningful alpha, yet diversified enough to withstand individual position adversity.
We draw a sharp distinction between business risk and valuation risk—and manage each differently. Business risk refers to fundamental deterioration: competitive displacement, secular decline, management failure, or balance sheet distress. These are the risks that can cause permanent capital loss, and we manage them through deep research, ongoing monitoring, and strict sell discipline. Valuation risk—the temporary mark-to-market volatility that comes from owning a mispriced asset—is something we are willing to bear when the thesis is intact. This distinction allows us to hold through short-term noise while remaining vigilant against genuine fundamental impairment.
For every position, we define a set of key performance indicators that serve as the quantitative pulse of the investment thesis. These are not generic financial metrics, but company-specific operating measures that directly test the assumptions underlying our variant perception. We monitor these closely and systematically—not to react to short-term data, but to catch genuine fundamental deterioration early, before it shows up in reported earnings. When KPIs diverge materially from our expectations, the position enters a formal review process where we must either re-underwrite the thesis with updated assumptions or exit the position.
Knowing when to sell is as important as knowing what to buy. We exit positions under four clearly defined conditions: when the original investment thesis has been invalidated by fundamental developments, when the stock has reached our target valuation and the forward risk-reward is no longer compelling, when a materially superior opportunity arises that warrants capital reallocation, or when position-level or portfolio-level risk limits are breached. Every exit is documented and reviewed to build institutional knowledge and refine our process over time. We do not hold positions out of hope, attachment, or anchoring to past prices.