Value Investing Observatory

The Buffett Lens

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

Issue #32 · Weekly Stock Analysis · November 11, 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: Virtu Financial, Inc. (VIRT)

Financial Services $59.51 Buffett Score: 71.1/100 Source: yfinance
Returning Pick: Previously recommended in Issue #5 (2026-04-08), with a Buffett Score of 71.0. The score has improved by 0.1 points to 71.1.
Data Quality Notice: Source=yfinance; only 5 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

Imagine a bustling marketplace where every trader needs someone ready to buy or sell at a moment's notice, like a reliable shopkeeper who keeps the shelves stocked no matter the weather. That's the role Virtu Financial plays in the financial world, stepping in to provide liquidity across stocks, bonds, and other instruments through its market making and execution services.

This outfit shows real strength in delivering high returns on equity, posting a latest ROE of 31.1 percent and a five-year average near 31.9 percent. Those figures line up well with the idea that what matters most is earning solid rates on capital employed, not just chasing earnings growth. Revenue has climbed steadily from around 0.8 billion to 1.2 billion over eight quarters, with last twelve months revenue at 4.4 billion and net income at 0.6 billion. A moat score of 77.6 out of 100 points to advantages from scale and regulatory barriers that help keep competitors at bay, much like a castle protected from invaders by both its walls and the rules of the land. Management quality looks decent too, with insiders holding 5.2 percent and institutions owning most of the rest, suggesting some skin in the game.

Yet I must note a shortcoming that gives pause. The debt-to-equity ratio sits at 4.97 times, which introduces leverage that could amplify troubles during tough market stretches. In my view, businesses that rely heavily on borrowed money risk eroding owner returns when conditions turn inflationary or uncertain, and market making itself can swing with trading volumes rather than offering steady economics like a well-run factory. Past growth rates may not repeat, as market fluctuations often influence results more than steady operating power alone.

Over the long haul, the current valuation at 7.6 times earnings and 2.4 times book value appears reasonable for a business generating those returns, provided the company maintains its edge in a patient, disciplined way. Intrinsic value, not just book numbers, should guide us here, and this setup might reward owners who hold through cycles without expecting quick miracles. For those looking to act on this, the ticker for Virtu Financial, Inc. on eToro is $VIRT.

— Buffett Bot

Trade Virtu Financial, Inc. — The ticker for Virtu Financial, Inc. on eToro is $VIRT

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Trade on eToro

Key Metrics Summary

Metric Value Buffett Threshold Status
ROE (Latest) 31.1% >15% PASS
Debt/Equity 4.97x <0.5x FAIL
Gross Margin 61.8% >40% PASS
Market Cap $12.9B >$10B PASS
LTM Revenue (Last 4Q) $4.4B Positive, with YoY growth preferred PASS
LTM Net Income (Last 4Q) $0.6B Positive, with YoY growth preferred PASS

#2: Advanced Drainage Systems, Inc. (WMS)

Industrials $129.30 Buffett Score: 65.0/100 Source: yfinance
Returning Pick: Previously recommended in Issue #4 (2026-03-25), with a Buffett Score of 80.1. The score has declined by 15.1 points to 65.0.
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 barn that channels rainwater away from the fields without anyone having to think about it much. Advanced Drainage Systems builds the pipes and chambers that do exactly that job for roads, farms, and towns, turning a basic need into steady business.

This company shows real strength in the numbers that matter most. Its return on equity sits at 22 percent lately and has averaged nearly 19 percent over five years, all while generating growing revenue and net income. That kind of earning power on the capital it employs lines up with the simple test of good management: solid returns without relying on tricks or heavy borrowing. The moat score of 71 comes from long-term contracts and the hassle customers face if they switch suppliers, much like a castle protected from invaders by both walls and habit. Management owns a meaningful stake, which tends to keep eyes on the long haul rather than short-term show.

Still, nothing is perfect, and it pays to say so plainly. Debt equals nearly all of equity, so the balance sheet is not as light as one might like in uncertain times. The price-to-earnings ratio near 25 times also leaves less margin if growth slows or the economy turns. Past gains in net worth or book value can flatter results when markets swing, yet what truly counts is the lasting worth of the operations themselves.

Over many years this business could keep delivering if it holds its contracts and managers stay focused on the core work. At today’s price the valuation asks for continued solid performance, so the sensible path is to watch patiently and buy only when the numbers look more generous relative to the earnings power. For those looking to act on this, the ticker for Advanced Drainage Systems, Inc. on eToro is $WMS.

— Buffett Bot

Trade Advanced Drainage Systems, Inc. — The ticker for Advanced Drainage Systems, Inc. on eToro is $WMS

eToro is a multi-asset investment platform. Capital at risk.

Trade on eToro

Key Metrics Summary

Metric Value Buffett Threshold Status
ROE (Latest) 22.2% >15% PASS
Debt/Equity 0.97x <0.5x WARN
Gross Margin 38.9% >40% FAIL
Market Cap $9.5B >$10B FAIL
LTM Revenue (Last 4Q) $3.3B Positive, with YoY growth preferred PASS
LTM Net Income (Last 4Q) $0.4B 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: 73.0 (-7.1 points)

ROE: 24.2% | Debt/Equity: 1.00x | Gross Margin: 38.4%

Consider reviewing your position.

⚠️ Advanced Drainage Systems, Inc. (WMS) WARNING

Recommended in Issue #3 (2026-03-18) with score 77.6

Current score: 73.0 (-4.6 points)

ROE: 24.2% | Debt/Equity: 1.00x | Gross Margin: 38.4%

Consider reviewing your position.

⚠️ Packaging Corporation of Americ (PKG) WARNING

Recommended in Issue #16 (2026-07-22) with score 64.5

Current score: 70.0 (+5.5 points)

ROE: 15.2% | Debt/Equity: 0.92x | Gross Margin: 21.6%

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.

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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