Value Investing Observatory
"Price is what you pay. Value is what you get."
Issue #22 · Weekly Stock Analysis · September 02, 2026
Welcome to this week's edition of The Buffett Lens, where we apply Warren Buffett's time-tested investment principles to identify stocks with durable competitive advantages, strong management, and sensible valuations.
Our quantitative model screens thousands of US-listed stocks against 26 key factors derived from Buffett's shareholder letters, including consistent earning power, high returns on equity with minimal debt, and favorable long-term prospects. The top-scoring stocks receive a detailed analysis written in the folksy, straightforward style that has characterized Berkshire Hathaway's communications for decades.
This week, we present 2 stocks that exemplify the principles of value investing.
Imagine a cast-iron skillet that's been passed down through generations in a family kitchen. It starts out sturdy, holds heat evenly through all kinds of cooking adventures, and keeps delivering reliable results without needing constant replacement or fancy upgrades. Williams-Sonoma strikes me as that kind of business in the home goods world, focusing on quality cookware, furnishings, and accessories that people turn to for everyday use and special occasions alike.
This outfit shows real strength in earning power on its equity capital, much like the test of solid managerial performance. Its latest return on equity sits at 58.2 percent, with a five-year average near 49 percent, all while revenue and net income have held steady around 1.8 billion and 200 million per quarter. That kind of consistency points to a business boat with good fundamentals, where the managers running things have built extra value through strong operations rather than relying on leverage or accounting tricks. The brand recognition adds a moat of about 79 out of 100, creating customer loyalty that helps protect against competitors, and the debt-to-equity ratio of 0.8 times keeps things grounded without undue borrowing. Institutional ownership at nearly 99 percent suggests outside eyes see the same disciplined approach.
Still, no business sails through every storm without some bumps. Consumer cyclical companies like this one can feel the pinch when folks tighten their wallets during slower economic times, and inflation might eat into those high returns on equity over the long haul if costs rise faster than prices. The valuation metrics, such as a price-to-book ratio near 12.8 times and a price-to-earnings of 22 times, reflect market enthusiasm, but they leave less room for error if growth slows from past levels. The moderate overall score of around 60 out of 100 reminds us that even strong performers carry limits on how fast they can compound.
Looking ahead, the steady earnings and brand loyalty suggest this could compound sensibly for patient owners who focus on intrinsic value over short-term swings, much like waiting for a good kitchen tool to prove its worth across many meals rather than chasing quick flips. If the price aligns with a margin of safety, it might fit a long-term portfolio built on enduring economics. For those looking to act on this, the ticker for Williams-Sonoma, Inc. on eToro is $WSM. — Buffett Bot
Trade Williams-Sonoma, Inc. — The ticker for Williams-Sonoma, Inc. on eToro is $WSM
eToro is a multi-asset investment platform. Capital at risk.
| Metric | Value | Buffett Threshold | Status |
|---|---|---|---|
| ROE (Latest) | 58.2% | >15% | PASS |
| Debt/Equity | 0.80x | <0.5x | WARN |
| Gross Margin | 43.9% | >40% | PASS |
| Market Cap | $26.1B | >$10B | PASS |
| LTM Revenue (Last 4Q) | $7.9B | Positive, with YoY growth preferred | PASS |
| LTM Net Income (Last 4Q) | $1.1B | Positive, with YoY growth preferred | PASS |
Picture a quarry that never runs dry, sitting right where highways and skyscrapers must be built. That's the essence of Martin Marietta Materials, digging up the stone, sand, and gravel that hold the country together. Its business rests on something simple and enduring: every mile of road or foundation needs what they supply.
The numbers line up with what counts most. Latest return on equity sits at 21.3 percent, well above the five-year average of 10.8 percent, showing the capital employed is working hard without fancy leverage or accounting tricks. Debt to equity at just 0.55 times keeps the balance sheet sturdy, much like a castle wall that doesn't need constant repair. The moat score of 66 reflects real cost advantages from owned reserves and local quarry locations that competitors can't easily copy. Insider ownership at 16.1 percent gives managers skin in the game, and the steady climb in recent quarters from near-zero to $1.9 billion in revenue and $0.3 billion in net income points to consistent execution rather than one-off gains.
Still, no business is immune to the seasons. Construction spending rises and falls with interest rates and government budgets, so earnings can swing even when the underlying quarries stay productive. The average ROE over five years reminds us that industry economics sometimes limit what even capable hands can achieve. At 15.2 times earnings and 3.2 times book value, the price isn't a bargain basement deal, though it looks fair for a company with durable assets if growth stays modest.
Over the long haul, America's need for infrastructure and housing won't vanish. A patient owner can let the quarries compound value as demand returns in cycles, provided the price paid leaves room for that compounding. Buying at today's levels and holding through the ups and downs fits the approach of focusing on what the business earns on equity over decades, not next quarter's headline.
For those looking to act on this, the ticker for Martin Marietta Materials, Inc. on eToro is $MLM. — Buffett Bot
Trade Martin Marietta Materials, Inc. — The ticker for Martin Marietta Materials, Inc. on eToro is $MLM
eToro is a multi-asset investment platform. Capital at risk.
| Metric | Value | Buffett Threshold | Status |
|---|---|---|---|
| ROE (Latest) | 21.3% | >15% | PASS |
| Debt/Equity | 0.55x | <0.5x | WARN |
| Gross Margin | 25.4% | >40% | FAIL |
| Market Cap | $36.7B | >$10B | PASS |
| LTM Revenue (Last 4Q) | $6.7B | Positive, with YoY growth preferred | PASS |
| LTM Net Income (Last 4Q) | $2.5B | Positive, with YoY growth preferred | PASS |
The following stocks from previous issues have fallen below our Buffett thresholds. We believe in accountability - when our picks deteriorate, you should know.
Recommended in Issue #4 (2026-03-25) with score 80.1
Current score: 78.0 (-2.1 points)
ROE: 26.4% | Debt/Equity: 0.97x | Gross Margin: 38.6%
Consider reviewing your position.
Recommended in Issue #3 (2026-03-18) with score 77.6
Current score: 78.0 (+0.4 points)
ROE: 26.4% | Debt/Equity: 0.97x | Gross Margin: 38.6%
Consider reviewing your position.
Recommended in Issue #11 (2026-06-10) with score 67.4
Current score: 72.0 (+4.6 points)
ROE: 14.5% | Debt/Equity: 0.31x | Gross Margin: 15.6%
Consider reviewing your position.
Recommended in Issue #11 (2026-06-10) with score 67.0
Current score: 73.0 (+6.0 points)
ROE: 9.2% | Debt/Equity: 0.29x | Gross Margin: 39.2%
Consider reviewing your position.
Recommended in Issue #15 (2026-07-08) with score 65.2
Current score: 73.0 (+7.8 points)
ROE: 71.8% | Debt/Equity: 1.56x | Gross Margin: 33.3%
Consider reviewing your position.
This newsletter is for educational and informational purposes only and should not be construed as investment advice. The analyses presented are based on publicly available information and quantitative models. Past performance does not guarantee future results. Always conduct your own research and consult with a qualified financial advisor before making investment decisions.
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