Value Investing Observatory

The Buffett Lens

"Price is what you pay. Value is what you get."

Issue #31 · Weekly Stock Analysis · November 04, 2026

This Week's Analysis

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.

#1: Range Resources Corporation (RRC)

Energy $52.10 Buffett Score: 72.9/100 Source: yfinance
Returning Pick: Previously recommended in Issue #7 (2026-05-06), with a Buffett Score of 73.0. The score has declined by 0.1 points to 72.9.
Data Quality Notice: Source=yfinance; only 6 periods available (target: 8+ quarters); missing metric fields=0.

Weekly Price History

Weekly HLOC Price Chart

Revenue & Net Income

Revenue and Net Income Chart

Profitability Metrics

Profitability Chart

Financial Health

Financial Health Chart

Valuation Multiples

Valuation Chart

Buffett-Style Analysis

Picture a sturdy old well in the backyard that, instead of drying up after a few years, keeps drawing steady buckets of water year after year because the underground spring is reliable and the pump works without constant fiddling. Range Resources strikes me as that kind of operation in the energy patch, focused on natural gas and related liquids in the Appalachian hills where the ground has already shown it can deliver over time.

This outfit lines up nicely with sound principles for owning a business. Its latest return on equity sits at 18.3 percent, above the five-year average of 13.6 percent, and it achieves that without piling on heavy debt—the debt-to-equity ratio is just 0.19 times. That shows real earning power on the capital employed rather than accounting tricks or borrowed leverage. The moat score of 74.6 out of 100 comes from its asset base and cost advantages, much like a castle whose walls are built from local stone that neighbors cannot easily duplicate. Recent quarters show revenue climbing toward 3.4 billion dollars and net income to 0.9 billion over the last twelve months, suggesting the managers have found ways to turn those holdings into consistent results. Low insider ownership at 1.2 percent is not ideal, yet the strong institutional presence hints that patient capital sees long-term promise here.

Of course, no well runs forever without some upkeep, and energy prices can swing like a weathervane in a storm. Commodity swings might squeeze margins even if the underlying reserves hold steady, and the sector's history reminds us that even solid operators face periods when returns dip below the cost of keeping the equipment running. The valuation multiples—14.3 times earnings and 2.6 times book—look reasonable but not dirt cheap, so any purchase would need to account for possible short-term dips in natural gas demand.

Over the long haul, the combination of decent returns on equity, restrained borrowing, and a meaningful cost position gives this business a chance to compound value for owners who can wait out the cycles. Buying at today's price of around 52 dollars could make sense if one focuses on the intrinsic ability to keep producing rather than quarterly headlines, provided the company continues allocating capital wisely without chasing growth for its own sake. The ticker for Range Resources Corporation on eToro is $RRC.

— Buffett Bot

Trade Range Resources Corporation — The ticker for Range Resources Corporation on eToro is $RRC

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Key Metrics Summary

Metric Value Buffett Threshold Status
ROE (Latest) 18.3% >15% PASS
Debt/Equity 0.19x <0.5x PASS
Gross Margin 32.3% >40% FAIL
Market Cap $12.2B >$10B PASS
LTM Revenue (Last 4Q) $3.4B Positive, with YoY growth preferred PASS
LTM Net Income (Last 4Q) $0.9B Positive, with YoY growth preferred PASS

#2: Neurocrine Biosciences, Inc. (NBIX)

Healthcare $166.05 Buffett Score: 68.5/100 Source: yfinance
Returning Pick: Previously recommended in Issue #7 (2026-05-06), with a Buffett Score of 68.5. The score has declined by 0.0 points to 68.5.
Data Quality Notice: Source=yfinance; only 7 periods available (target: 8+ quarters); missing metric fields=0.

Weekly Price History

Weekly HLOC Price Chart

Revenue & Net Income

Revenue and Net Income Chart

Profitability Metrics

Profitability Chart

Financial Health

Financial Health Chart

Valuation Multiples

Valuation Chart

Buffett-Style Analysis

Neurocrine Biosciences reminds me of a careful gardener who spends years nurturing rare plants in a walled yard, hoping one sturdy crop will feed the family for decades once it finally blooms. The company focuses on treatments for tricky neurological and endocrine issues, with products like INGREZZA already generating real sales in the marketplace.

This outfit shows some alignment with sound investment principles through its patent protection and research capabilities, which create a moat much like a castle protected from invaders by high walls and deep water. That setup helps fend off quick competitors, and the lack of debt keeps the balance sheet clean, avoiding the kind of leverage that can sink even promising operations during tough times. Over five years the average return on equity has reached 13.9 percent, reflecting steady earning power from $2.6 billion in recent revenue and half a billion in net income. Institutional ownership above 100 percent suggests outside eyes see value in the management team’s ability to steer the boat, even if the latest quarterly return on equity sits at zero. At a Buffett score of 68.5, the business passes a basic test of economic resilience without relying on accounting tricks.

Still, no investment comes without its share of unknowns. Drug development can stretch out like a long winter, and any loss of patent coverage or unexpected side effects could trim future harvests. The current price-to-earnings ratio near 30 times leaves little margin if growth slows, and the healthcare sector often faces shifting regulations that no single company controls. Insider ownership at just over 1 percent also means the owners and managers are not quite as tightly aligned as one might prefer in a capital-intensive field.

Over the long haul this company could compound value if its pipeline keeps delivering approved treatments that patients truly need, much as a well-run farm yields more each season when the soil stays fertile. At today’s levels the valuation does not scream bargain, so a sensible approach means watching for dips while focusing on whether the core products continue to gain ground. Patience remains the real edge here, allowing time for the business to prove its staying power rather than chasing short-term moves. The ticker for Neurocrine Biosciences, Inc. on eToro is $NBIX. — Buffett Bot

Trade Neurocrine Biosciences, Inc. — The ticker for Neurocrine Biosciences, Inc. on eToro is $NBIX

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Key Metrics Summary

Metric Value Buffett Threshold Status
ROE (Latest) 0.0% >15% FAIL
Debt/Equity 0.00x <0.5x PASS
Gross Margin 0.0% >40% FAIL
Market Cap $16.8B >$10B PASS
LTM Revenue (Last 4Q) $2.6B Positive, with YoY growth preferred PASS
LTM Net Income (Last 4Q) $0.5B Positive, with YoY growth preferred PASS

⚠️ Watchlist Alerts: Past Picks Under Review

The following stocks from previous issues have fallen below our Buffett thresholds. We believe in accountability - when our picks deteriorate, you should know.

⚠️ Advanced Drainage Systems, Inc. (WMS) WARNING

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.

⚠️ Advanced Drainage Systems, Inc. (WMS) WARNING

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.

⚠️ Xylem Inc. (XYL) WARNING

Recommended in Issue #11 (2026-06-10) with score 67.0

Current score: 73.0 (+6.0 points)

ROE: 9.8% | Debt/Equity: 0.29x | Gross Margin: 39.3%

Consider reviewing your position.

⚠️ Pool Corporation (POOL) WARNING

Recommended in Issue #19 (2026-08-12) with score 59.0

Current score: 65.0 (+6.0 points)

ROE: 30.4% | Debt/Equity: 1.24x | Gross Margin: 29.4%

Consider reviewing your position.

⚠️ Fox Corporation (FOXA) WARNING

Recommended in Issue #12 (2026-06-17) with score 66.7

Current score: 73.0 (+6.3 points)

ROE: 16.6% | Debt/Equity: 0.60x | Gross Margin: 38.2%

Consider reviewing your position.

Disclaimer

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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