Want Stock Market Success? Forecast Earnings Like Mr. Valuation

Forecast Earnings

In this video, Chuck Carnevale, co-founder of FAST Graphs, takes a deep dive into what he calls the single most important factor for long-term investing success: the ability to forecast future earnings growth. While past performance matters, it’s really what lies ahead that determines whether a stock will generate wealth or disappointment. Through detailed examples, Chuck demonstrates why valuation, earnings, and cash flow are inseparable from forecasting, and why investors who master this discipline will always have an edge.

Why Forecasting Matters

Chuck begins by stressing a foundational truth: in the long run, earnings and cash flow dictate stock prices and dividend income. Over short stretches, markets swing based on emotion, fear, or excitement. But sooner or later, price aligns with business performance. This makes forecasting—not guesswork, but disciplined analysis—the key to successful investing.

He also addresses a common criticism: analyst estimates aren’t perfect. That’s true, he admits, but dismissing them entirely is misguided. Forecasts collected by FactSet come from over 800 professional analysts at major firms like Goldman Sachs, Morgan Stanley, UBS, Credit Suisse, and others. These analysts are trained professionals who study company guidance, balance sheets, and industry trends. While not flawless, their consensus estimates provide a reliable starting point. FAST Graphs allows investors to test those forecasts against history, evaluate margins of error, and run their own scenarios.

Case Study 1: General Dynamics (GD)

The first company Chuck examines is General Dynamics, a defense contractor with a long track record of solid earnings growth. FAST Graphs shows its historical earnings in orange, with dotted lines pointing to analyst forecasts. The stock’s price has generally followed its earnings trajectory, but valuation swings in both directions are clear.

general dynamics

During times of overvaluation, prices eventually reverted back toward earnings. The same happened during undervaluation periods. Chuck paraphrases Warren Buffett’s wisdom: “I can’t tell you when, but I can tell you with certainty that price will return to intrinsic value.”

Right now, GD trades at a P/E above 21, with an earnings yield below 4.5%. For Chuck, that’s unattractive—well under the 6.5–7% threshold he prefers. Even if forecasts are accurate, the valuation makes the stock unappealing. “Why waste time forecasting,” he asks, “if the stock is already too expensive?”

Although he’s owned and profited from GD in the past, he views it as overvalued today and not research-worthy at current prices. This illustrates an important lesson: great businesses aren’t always great investments if you overpay.