When something big happens in public, a practitioner reads it the next day.

$37 billion of hidden value — and the ‘If We Ran Berkshire’ buy-it-all case.

Danaher is the exemplar of one of four legitimate compounder archetypes: the operating-system compounder. Understanding that archetype is worth thirty pages of memo.

This is a practitioner primer, not a valuation call. An informational overview of Danaher's structure (three segments, ~$185B mkt cap, ~$24B FY25 revenue), operating system (DBS — the Danaher Business System, with printable practitioner templates), leadership arc (Steve and Mitchell Rales founding 1984, Larry Culp scaling 2001-2014, Culp at GE 2018-present as the largest-scale DBS test), and place in the compounder taxonomy. Danaher is the exemplar of one specific archetype — the codified operating-system compounder — among four legitimate archetypes: Berkshire (owner-discretion), Constellation (permanent-capital VMS), LVMH (brand-portfolio), Danaher (operating-system). The 11-section memo walks Danaher today, the Rales origin, the Rales philosophy, DBS with seven printable practitioner checklists (VVC, PIT, Kaizen, Gemba, 5 Whys, X-matrix, GM readiness), DBS vs Six Sigma vs Toyota Production System, Larry Culp at Danaher, Larry Culp at GE (the three-way split), the three Danaher spinoffs (Fortive 2016, Envista 2019, Veralto 2023), the Rales family-office estate architecture, and the four-archetype compounder taxonomy. Free case memo, 20-tab financial model, 8-tab DBS practitioner toolkit, deck, and combined print edition. Not investment advice.

Berkshire owns ~19% of PAG. Roger Penske is 89. The architecture is already in place for one plausible succession outcome to become the natural resolution — not a forecast, an architecture map.

A practitioner analysis of Penske Automotive Group. Berkshire Hathaway owns approximately 19% of PAG, built patiently over more than a decade, and has received approximately $400 million in cumulative dividends since 2015. Roger Penske is 89. The memo works across three entities — PAG (public consolidator), Penske Corporation (private family control block), and PTS (the Mitsui joint venture housing truck leasing and logistics) — and four succession outcomes. The post-Mitsui sum-of-the-parts equity value builds to approximately $12.6 billion; a strategic sale to Berkshire would require ~$10.2 billion of fresh capital, net of the 19% already held at cost. The 106-page combined edition includes the 59-page case memo, the 26-slide practitioner deck, and the 18-tab financial model. Section 8 — the estate framework — works through seven distinct planning mechanisms with IRC citations (§6166 installment election, §303 partial redemption, IDGT sales, GRATs, charitable lead trusts, life-insurance-funded liquidity, and Pennsylvania-domicile considerations). Section 10 walks the Berkshire-declines counter-case in the same voice as the primary thesis. Not investment advice.

The reference case for defensible sponsor-led dividend recapitalizations at €5B+ scale — and the strongest single-document practitioner reference on this transaction anywhere on the public internet.

A practitioner analysis of the September 2024 Belron / Safelite dividend recapitalization — the largest sponsor-controlled dividend recap on record. The consortium (D'Ieteren ~50%, CD&R ~15%, Hellman & Friedman ~15%, GIC ~10%, BlackRock ~10%) raised approximately €8.1 billion of new leveraged loans and high-yield bonds, distributed roughly €4.4 billion as an extraordinary dividend strictly pro-rata by ownership, and used the ~€3.7 billion balance to refinance existing debt. Post-recap net leverage moved from ~2.5-3.0x to ~5.5-5.8x. S&P and Moody's retained single-B family ratings on negative outlook. The memo walks the transaction across seven questions with 15+ tables: mechanics on one page, the balance-sheet walk (Part A) and income-statement walk (Part B) line by line, the tax characterization for each sponsor category (including the D'Ieteren Belgian participation-exemption architecture, an E&P worked example with Rev. Rul. 74-164 tier ordering, and the sponsor basis buildup), the debt-stack maturity ladder and the 2031-2032 refi wall, the modern recap-canon comparables set (Domino's, Getty, Clarios, First Data), and the first full year of post-recap operating results — FY2025 sales up 7.1% CFX, adjusted EBITDA €1.85B, pro-forma leverage compressed to ~4.1x on the full year and ~3.7-3.9x on the Q4 exit run-rate. The recap thesis is now validated by operating data inside the same document that argues the thesis. Not investment advice.

The world's most expensive family succession, walked end-to-end — and the reference structure for multi-generational family control in a 60% marginal-rate jurisdiction.

A practitioner analysis of Samsung Electronics and the Lee family. FY2025 revenue KRW 333.6 trillion (~$255 billion), operating profit KRW 43.6 trillion, Q4 2025 all-time-high consolidated quarterly records driven by the Device Solutions memory business (HBM3E and DDR5 pricing into hyperscaler AI workloads). Samsung Electronics is ~40% of the KOSPI and Samsung Group is ~30% of Korean exports — systemically important in a way no Western company approaches. In parallel, the Lee family completed payment of the KRW 12 trillion (~$8-11 billion) inheritance-tax settlement on Lee Kun-hee's KRW 26 trillion estate in May 2026 — the largest inheritance tax event in world history — and Chairman Lee Jae-yong's stakes in Samsung Electronics, Samsung C&T, and Samsung Life Insurance all increased during the six-year payment period. Case walks the KRW 12T event, the six-year installment plan, the KRW 3 trillion art collection donation to the Korean state under Article 88-2, the 2015 Samsung C&T + Cheil Industries merger, the chaebol cross-shareholding structure, Samsung Life Insurance as the structural keystone (the Korean parallel to Financière Agache in the LVMH architecture), Chairman Lee's 2016-2022 legal history and the August 2022 presidential pardon (neutral factual record), the Samsung Foundations, and the bear cases. Not investment advice.

The single most successful family-controlled global champion of the modern era — and the reference structure for practitioner-grade multi-generational family-office design.

A practitioner analysis of LVMH Moet Hennessy Louis Vuitton. Six operating groups, seventy-five maisons, roughly EUR 87B revenue 2024, with Fashion & Leather Goods (~54%) dominant. But the case’s central practitioner argument is that the real estate is buried — the prime-street retail footprint (Champs-Elysees to 5th Avenue to Ginza to Nanjing Road), the Cheval Blanc + Belmond + Bulgari hospitality portfolio, and the DFS airport concessions all sit at book cost inside the operating segments. Illustrative real-estate uplift ~EUR 15-25B above book. Bernard Arnault (77) controls the empire through Financiere Agache in Belgium; the 2022 shareholder vote raised the CEO mandatory retirement age from 75 to 80. Five children from two marriages already seated at Christian Dior (Delphine), Berluti + Christian Dior SE Chairman (Antoine), Tiffany EVP (Alexandre), LVMH Watches CEO (Frederic), and Louis Vuitton Watches (Jean). Includes full Tiffany transaction history (Nov 2019 announcement, Delaware Chancery litigation, Oct 2020 re-cut at $131.50, Jan 2021 close, December 2024 fire at 727 Fifth Avenue), the Nicolas Puech shares scandal at Hermes with the LVMH stealth-accumulation thread, and detailed acquisition record 1984-2024. Not investment advice.

The opportunity to acquire one of only two players in a genuine two-sided-network-effect duopoly — the specific rare event Berkshire waits decades for.

A practitioner analysis of a hypothetical Berkshire acquisition of Copart, Inc. Owner earnings capitalized at 20× produce a ~$30B intrinsic anchor; the sum-of-the-parts (owner earnings + real estate at market + cash and Treasuries) produces a ~$38B central against a $27.8B market cap. Zero long-term debt; 18.6× TTM P/E on $1.61 EPS. Duopoly scarcity — Moody's / S&P and Coca-Cola / Pepsi are the moat analogs. BNSF (2010, ~$44B) and Precision Castparts (2016, ~$37B) are the acquirer precedents. Founder Willis Johnson (79) and returning CEO Jay Adair (son-in-law) supply the family-succession configuration Berkshire has repeatedly paid up for. Two drivers: GEICO integration margin capture (~$135M/year) and international consolidation at Berkshire capital cost (~$110M/year mature) — +$245M annual value creation vs. baseline. Recommended Scenario B at 1.15× (~$32B EV). Not a rumor. Not investment advice.

A wide-moat cash machine at a rational ~29x — the discipline that bought the railroads, pointed at tech.

Berkshire’s first-ever Google position surfaced quietly — ~17.85M shares (~$4.3B) in the Q3 2025 13F — then, in Greg Abel’s debut quarter as CEO, Berkshire roughly tripled it to ~58M shares for a ~$15.4B cost basis (~$16.6B market value), funded in the same window it was trimming Apple. Pro forma for the separate $10B June 2026 placement, total committed capital is ~$25.4B — a top-five-caliber holding. The read: a fair, middle-of-the-pack valuation (~29x earnings, below Apple/Amazon/Nvidia despite faster growth) — not distress, not euphoria. The break from pattern is the sector; the discipline is textbook. Full package — case study, IC memo, 3-statement model, and deck — free below.

Not a wide-moat compounder bought cheap — a contrarian re-entry into a transformed industry.

In April 2020 Buffett sold Berkshire’s entire airline book — Delta, United, American, Southwest — at a loss and called it “a mistake.” In Greg Abel’s first quarter as CEO, Berkshire bought back in: a brand-new ~$2.65B, 6.1% stake in Delta, its 14th-largest holding, filed as a passive 13G. The read: a consolidated airline sector now throws off real free cash flow, and Delta — its best operator — is deleveraging while it does. The Q1 net loss that might scare you is a non-operating accounting artifact; read the financials, not the headline. Full package — case study, IC memo, 3-statement model, and deck — free below.

Own it, don’t add — a permanent compounder at ~26x, and a transfer-pricing tax fight that is a managed tail risk, not a thesis-breaker.

Berkshire has owned Coca-Cola since 1988 and has not sold a share in 37 years; a fixed 400M-share stake has drifted to ~9.3% of the company purely through buybacks, and the ~$1.3B cost basis throws off ~$816M a year in dividends — a yield-on-cost north of 60%. The read: a wide-moat permanent holding fairly priced at ~26x, where the right action is to hold, not add. The teaching core is the IRS transfer-pricing dispute buried in the filings — a ~$14B exposure across 2010–2025, a $520M reserve, an effective-tax-rate effect of ~3.5 points, and a 3M v. Commissioner appeal that swings the odds. We quantify it as a managed tail risk and use it to teach how to read a tax footnote. Full package — case study, IC memo, 3-statement model, and deck — free below.