Open any investing forum and you'll see the same arguments repeated endlessly. "AAPL is overvalued at 30x earnings." "ADBE is a screaming buy at 14x." "NVDA is a bubble — no way it's worth 38x." The conversations all share the same mistake: they treat the P/E ratio as a single verdict on whether a stock is cheap or expensive.

It isn't. A stock with a P/E of 14 can be a value trap. A stock with a P/E of 38 can be reasonably priced — sometimes even cheap. The number alone tells you almost nothing without context.

This article gives you the framework professional investors actually use to assess whether a stock is overvalued or undervalued. We'll walk through 4 layers of analysis, then apply them to two real companies — Adobe and NVIDIA — that look obvious at first glance and turn out to be more interesting than the headlines suggest.

Disclaimer: This article is for educational and informational purposes only. It does not constitute investment advice. Past performance does not guarantee future results. Always do your own research before making any investment decisions.

Why a Single Number Tells You Nothing

Let's start with the core problem. When most retail investors hear "this stock has a P/E of 14," they think one thing: cheap. When they hear "this stock has a P/E of 38," they think the opposite: expensive. Both intuitions are wrong more often than they're right.

The reason is that a P/E ratio is just price divided by earnings. It tells you what investors are willing to pay today for a dollar of current profit. But that number says nothing about whether those profits are growing or shrinking, whether the business is becoming more or less efficient, or whether the company today is fundamentally different from the company that earned a similar P/E five years ago.

A useful way to think about valuation is to combine two dimensions: how does the current price compare to history? and how are the fundamentals trending? That gives you four possible patterns:

Valuation (vs. history)	Fundamentals	What it usually means
Cheap	Stable or improving	Potentially undervalued
Cheap	Deteriorating	Value trap
Expensive	Stable or improving	Premium for quality (often justified)
Expensive	Deteriorating	Potentially overvalued

The key insight is that "cheap" and "expensive" are meaningless without the second column. A stock can look cheap and be a trap. A stock can look expensive and be a bargain. To know which one you're looking at, you need a structured framework — not a gut reaction.

The 4-Layer Valuation Framework

Here's the framework I use to assess any stock in about 10 minutes. It has 4 layers, and each one answers a different question.

Layer 1 — Historical valuation context. How does today's P/E compare to the stock's own historical average? This is more useful than comparing across companies or sectors, because it removes industry noise and tells you whether the market is pricing this specific business more or less generously than it has in the past.

Layer 2 — Profitability quality. Are the company's gross, operating, and net margins stable, improving, or deteriorating? Margins are the cleanest signal of business health. A company can grow revenue while destroying margins (bad), or grow revenue while expanding margins (great).

Layer 3 — Growth trajectory. Are revenue, earnings, and free cash flow growing, flat, or declining? Annual snapshots can be misleading — what matters is the rolling trend over multiple years.

Layer 4 — Returns on capital. Are ROE and ROA stable, improving, or deteriorating? These tell you how efficiently the business turns capital into profit. A company with rising ROE is becoming more efficient. A company with falling ROE is becoming less efficient — even if its revenue is growing.

When all 4 layers point in the same direction, you have a clear signal. When they diverge, you have an interesting story — and that's where most of the real opportunities (and traps) hide.

Let's apply this to two real companies.

Case Study 1 — Adobe (ADBE): When "Cheap" Actually Means Cheap

Adobe is the dominant player in creative software, document management, and digital marketing. It's also one of the most beaten-down large-cap tech stocks of the last 18 months, down significantly from its 2021 highs. The market is treating it like a company in decline.

Is the market right?

Adobe (ADBE) Overview — Awalyt Fundamental Analysis

The headline numbers: market cap around $98B, trailing P/E of 13.98, forward P/E of 9.60, EPS of $17.17. For a software company with 88% gross margins, those valuation numbers look unusual at first glance. Let's go through the 4 layers.

Layer 1: Historical valuation context

Adobe Rolling P/E Ratio — 10-Year History

This chart is the entire reason this case study exists. Adobe's historical mean P/E over the last decade is 45.0x. Today's P/E is 13.7x. That means Adobe is currently trading at less than one-third of its historical valuation average.

Look at the trajectory. From 2017 through 2021, Adobe consistently traded at 45-65x earnings. Since 2022, the multiple has compressed steadily, and over the last 12 months it's collapsed to its current level. This isn't a small deviation from the mean — it's a fundamental rerating of how the market values this business.

The question is: is the rerating justified by deteriorating fundamentals, or has the market overreacted?

Layer 2: Profitability quality

Adobe Profitability Margins — 10-Year Trend

Here's where the story gets interesting. Adobe's gross margin has been remarkably stable at 88-89% for an entire decade. Operating margin sits around 35%, EBITDA margin around 40%, net margin around 28-30%. None of these are declining. If anything, they've slightly improved over the period when the stock was being punished.

This is the first signal that the market's narrative ("Adobe is in decline") doesn't match the data ("Adobe's margins are unchanged"). A company that's actually losing pricing power and competitive position would show margin compression. Adobe shows none.

Layer 3: Growth trajectory

Adobe Revenue, Net Income, and EPS — Rolling TTM Trends

Now look at the trajectory. Adobe's revenue has grown from roughly $5B in 2015 to over $24B in early 2026 — a near-perfect linear progression. Net income grew alongside it, and EPS climbed from around $1 to $17 over the same period. There is no inflection point. There is no plateau. There is no decline. The business is doing exactly what it has been doing for a decade: growing steadily, consistently, profitably.

If Adobe were in actual decline, we'd expect to see revenue flatten, net income compress, or EPS roll over. None of those things are happening.

Layer 4: Returns on capital

Adobe ROE and ROA — Capital Efficiency Trend

The final layer might be the most surprising one. Adobe's ROE has actually accelerated over the last 18 months, climbing from around 30% to over 60%. ROA has been steadily climbing toward 25%. These aren't the metrics of a deteriorating business. These are the metrics of a business becoming more efficient at deploying capital — the opposite of decline.

What Adobe's 4 layers tell us

All four layers point in the same direction:

Layer 1 (valuation): Trading at one-third of historical average
Layer 2 (margins): Stable at industry-leading levels
Layer 3 (growth): Steady linear growth in revenue, earnings, and EPS
Layer 4 (returns): Accelerating capital efficiency

This is the textbook pattern of a potentially undervalued stock. The market has decided Adobe is in decline, but the financial data doesn't show decline anywhere. That's not a guarantee that the stock will recover — narratives can persist for years, and there are real risks around AI competition that the numbers don't capture. We covered those in our deep dive on Adobe. But it does mean the price is being driven by sentiment, not by fundamentals — and that's the kind of mismatch that often eventually corrects.

Case Study 2 — NVIDIA (NVDA): When "Expensive" Doesn't Mean What You Think

If Adobe is the obvious "cheap stock" case, NVIDIA is its mirror image. Everyone knows NVIDIA. Everyone has an opinion. The dominant narrative on Reddit and finance Twitter is that NVDA is "in a bubble" and "way overvalued." Let's see what the framework actually says.

NVIDIA (NVDA) Overview — Awalyt Fundamental Analysis

The headlines: market cap of $4.60 trillion, P/E of 38.63, forward P/E of 23.20, EPS of $4.90. A $4.6T market cap and a 38x P/E sound like exactly the numbers that justify the "bubble" narrative. Let's apply the 4 layers and see if that holds up.