Forward P/E ratios are climbing back toward 18x — the average since 2000. That's above the long-term 15x norm.

Why the shift? Lower rates, cooling inflation, and stronger earnings growth have all supported higher multiples. Markets are pricing in a better environment.

But here's the thing: averages don't justify prices. A 15x multiple reflected decades of varying inflation regimes, rate cycles, and profit margins. The 18x average since 2000 includes two massive bubbles and a decade of unprecedented monetary policy.

Context matters. If earnings growth sustains and rates stay moderate, 18x might hold. If either assumption cracks, multiples compress fast. Valuation is always a function of what you're paying versus what you're getting — and right now, you're paying for optimism.

Watch the earnings, not just the multiple.