Bill Ackman Thinks This Factor Is Even More Important Than Valuation For Long-Term Investments

Bill Ackman argues in his shareholder letter that long-run returns will be driven more by strong, sustainable EPS growth than by valuation alone. He illustrates the risk of multiple compression (e.g., ~10% multiple contraction can offset ~20% annualized earnings growth, implying about a ~5.5% price drop) while claiming that over a decade EPS growth can overwhelm large multiple declines (e.g., 20% EPS CAGR with a 50% multiple compression could still yield ~12% annual returns). The piece positions Pershing Square’s approach as investing in “wonderful businesses at a fair price,” suggesting a constructive long-term bias despite some holdings trading around or above market-average P/E.

Analysis

This is less a stock-specific catalyst than a factor signal: the market is still willing to pay for long-duration EPS compounding when the reinvestment runway is visible. That supports AMZN, GOOGL, NFLX and NVDA as “fair price for better growth” names, while quietly hurting low-growth value stocks that only work if multiple expansion does the heavy lifting. The second-order effect is crowding: if capital keeps rotating into the same quality compounders, the winners can stay expensive longer than bears expect, but the downside on any growth miss gets sharper because there is less valuation cushion.

Near term, this is a sentiment read with limited immediate price impact; the real catalyst window is 1-3 months of earnings revisions and guidance follow-through. Over 6-18 months, the key variable is whether these franchises can convert revenue growth into sustained free cash flow growth without capex or competition eroding margins. If real rates back up or revision breadth rolls over, the market will stop rewarding the philosophy and the multiple support can compress quickly.

Contrarian view: this framework is already widely accepted among large-cap managers, so the alpha is in names where growth is accelerating but the market remains skeptical, not in chasing the most obvious compounders. For PS/PSHZF specifically, this is not a standalone catalyst; it only matters if the portfolio’s underlying holdings keep compounding fast enough to offset any holding-company discount and fees. Absent that, the setup is more a confirmation of style drift toward quality than an actionable event.

Key Decisions for Investors

• Buy GOOGL on 3-5% pullbacks for a 6-12 month hold; thesis is multiple durability from durable EPS growth, with upside if revisions re-accelerate. Falsify on two straight quarters of sub-mid-teens EPS growth or meaningful FCF margin compression.
• Use AMZN as the cleanest expression of this memo’s theme; scale in after earnings volatility rather than chasing strength. Risk/reward is best if operating leverage holds while the market keeps paying for growth over low P/E.
• Prefer NFLX as a smaller, higher-beta expression of the same factor, but only via call spreads or limited-risk structures over 3-6 months. Exit if subscriber/ARPU data stops supporting above-market EPS compounding.
• Do not initiate PS or PSHZF solely on this thesis; set an alert only if the vehicle’s discount to NAV widens materially, which would create a separate value entry point. Otherwise, treat it as a style confirmation, not a catalyst.
• For macro allocation, stay overweight quality-growth baskets over cheap-but-stagnant value exposures until the next revision downtick. The best risk/reward is buying any of the above on post-earnings drawdowns, not pre-empting them.