Stock Deep Dives

Why Alphabet fits a moat-and-discipline framework — search and YouTube network effects, cloud diversification, and a cash pile funding buybacks and moonshots.

Why Amazon fits a moat-and-discipline framework — a logistics and cloud flywheel, AWS funding retail reinvestment, and aggressive compounding over short-term profit.

Why Buffett's longest-held financial position fits a moat-and-discipline framework — a closed-loop network, premium pricing power, and disciplined capital return.

Why Berkshire's largest non-financial holding fits a Buffett-style framework — an ecosystem moat, disciplined capital return, and a valuation that demands care.

Why Buffett's crisis-era preferred-and-warrants deal became a top-three Berkshire holding — a deposit franchise, patient structured capital, and a lesson in buying fear.

The holding company itself as a case study in capital allocation, float-driven insurance moats, and the compounding machine Buffett built.

Why Berkshire's energy anchor fits a patient-owner framework — an integrated oil major with disciplined capital return, a strong balance sheet, and a moat in scale.

The textbook wide-moat consumer brand — pricing power, global distribution, and a century of compounding that Buffett has held since 1988.

Charlie Munger's favorite retailer — a membership moat built by refusing to exploit customers, and a wide-moat compounding machine every value investor should study.

Buffett's 2011–2018 tech foray — a wide moat he misjudged, and the honest exit that reshaped how he thinks about technology franchises.

Why Johnson & Johnson fits a moat-and-discipline framework — a diversified portfolio of moats, a fortress balance sheet, and six decades of dividend growth.

The 2015 Berkshire–3G deal and its $15B write-down — a rare, instructive Buffett lesson in brand erosion, leverage, and the limits of cost-cutting.

The challenger half of the payments duopoly — the same network tollbooth as Visa, but with a more aggressive incentive posture and a fast-growing services mix.

Why Microsoft fits a moat-and-discipline framework — enterprise switching costs, cloud scale, and capital return through buybacks and dividends.

Why Buffett's quietest rating-agency stake is a textbook toll-bridge moat — regulatory lock-in, near-zero capital needs, and pricing power few businesses can match.

Why NVIDIA forces a nuanced Buffett-style read — a CUDA software moat and AI-training monopoly, priced for enormous perfection.

Why Buffett built a layered energy bet on Occidental — preferred income, warrants, and a large common stake anchored in Permian assets and a manager he trusts.

Why Buffett held this regional bank for 16 years — disciplined lending, high returns on equity, and a lesson in selling the whole position when the thesis changes.

The wider half of the payments duopoly — a two-sided network tollbooth that takes no credit risk, and a benchmark wide-moat every value investor should study.

A 33-year Berkshire holding turned cautionary tale — how a great deposit franchise cracked from within, and how Buffett weighed crisis against repair.