March 2026 Random Ramblings

Episode Summary

Executive Summary: Andrew Walker’s monthly ramble focuses on unusually volatile markets, the changing meaning of strong track records in software/GARPI investing, a practical “three-year rule” for underperforming stocks, and how position sizing should change after major price moves. He argues that investors must re-underwrite theses, avoid inertia, and adapt sizing to new fundamentals rather than anchoring to old share counts.

Main Topics: Market volatility and macro weirdness (Priority: 5/5): Walker opens with his sense that markets are behaving strangely: fear is elevated, many stocks are swinging sharply, yet major indices remain near highs. He links recent volatility to geopolitical shocks and broader uncertainty. Software/GARPI track records and hidden beta (Priority: 5/5): He questions whether many investors’ strong long-term records in software and growth stocks were driven by skill or by a long favorable regime of falling rates, multiple expansion, and sector tailwinds. The three-year underperformance rule (Priority: 4/5): Walker revisits his heuristic that if a stock goes nowhere for three years, investors should ask whether the problem is the market or their thesis, while acknowledging exceptions for businesses that are still compounding value. Value creation vs. stagnant businesses (Priority: 4/5): He contrasts great businesses, where time improves intrinsic value, with weaker businesses where time alone does not unlock value. He uses the time-capsule analogy to show why catalyst timing matters more in lower-quality names. Position sizing after large price moves (Priority: 5/5): Walker argues that a stock moving 40% up or down materially changes both risk and portfolio weight, so investors should not passively keep the old share count. He advocates re-underwriting and adjusting size deliberately. Risk controls and at-cost limits (Priority: 3/5): He recommends at-cost limits as a practical guardrail against over-averaging down, while noting that rising positions can also create constraints that prevent adding even when the thesis improves.

Key Arguments: Recent market behavior feels inconsistent with headline index levels: many individual stocks are down sharply even though the S&P 500 and Russell 2000 are only modestly lower. Long track records in software and growth investing may be overstated if they were built during a prolonged favorable regime rather than through repeatable skill. A three-year period of no progress is a useful trigger to re-underwrite a thesis, especially in lower-quality or non-compounding businesses. Great businesses can justify patience because intrinsic value compounds over time even if the stock price lags; weaker businesses often do not. After a major move, the original position size is usually no longer optimal because the risk/reward and portfolio weight have changed materially. Investors should force action after large moves—either add or reduce—rather than defaulting to inaction. At-cost limits can prevent emotional doubling down and help define how much capital can be committed to a thesis at different stages. Some recent insider buying and buybacks in software may indicate that management teams see value where the market sees distress.

Data Points: Russell 2000 monthly move: down 7% - Walker cites intramonth weakness while discussing market fear and volatility. S&P 500 monthly move: down 5% - Used to contrast index-level declines with severe stock-specific drawdowns. Russell 2000 year-to-date move: down 2% - Shows that despite fear, the index is still near flat on the year. S&P 500 year-to-date move: down 4% - Supports his point that headline indices do not fully reflect market stress. CNN Fear and Greed: extreme fear - Referenced as a quick sentiment gauge. VIX: around 26 - Indicates elevated volatility during the period discussed. Prediction markets revenue at Robinhood (June 2024): $24 million per year - Example from Fiscal.ai showing rapid growth in a niche revenue stream. Prediction markets revenue at Robinhood (December 2025): $147 million per year - Illustrates explosive growth in a new business line. Time horizon for the underperformance rule: 3 years - Walker’s heuristic for reassessing a stock that has gone nowhere. Position move example: 10% position falling to 6% after a 40% decline - Illustrates how a large price move changes portfolio weight without any trading. Position move example: 10% position rising to 14% after a 40% gain - Shows how winners can become oversized quickly. At-cost limit example: 5% of the book - Walker describes a cap on capital committed to a name at cost. Energy peak oil period: 2004-2007 - Historical analogy for evaluating whether strong returns were driven by sector tailwinds. Oil price peak: about $150 per barrel - Referenced as the early-2008 peak in the energy cycle.

Pivotal Quotes: "I just I find them very strange, very strange." — Andrew Walker: His recurring reaction to current market behavior and volatility. "If a stock doesn't go anywhere for three years, it's time to look in the mirror and say, is it me or is it the market?" — Andrew Walker: His core heuristic for reassessing a stagnant investment thesis. "It's very unlikely that the exact number of shares you had that created a 10% position on Tuesday, the stock's on 50% on Wednesday, that exact number of shares that now gets you to about a 5% position. It's very unlikely that is the right number." — Andrew Walker: His argument that position sizing must be actively re-evaluated after large moves.

Implications: Listeners should expect more regime-aware investing: question whether past outperformance was skill or tailwind, re-underwrite stagnant names, and actively resize positions after big moves instead of anchoring to old holdings.