Munger Mode rating: 2 out of 5 — Sell. Our own rating from the research report below, on business quality first: moat durability and management, with price separating the top three.
We have spent our lives saying two things about airlines: the industry incinerates capital, and the rare exception proves the rule. For four decades, Southwest was the exception — the lowest-cost operator in America with a fanatical culture, a fortress balance sheet, and 47 consecutive profitable years. What we see in the June 2026 10-Q is a company that has traded away the very things that made it exceptional. The moat that existed — a structural cost advantage wrapped in a beloved, differentiated brand — has largely eroded, and management, under pressure from an activist who is already heading for the exit, has responded by making Southwest more like its competitors, not less. Bag fees, assigned seating, basic economy, expiring flight credits: each is individually rational, and together they are producing a genuine near-term earnings inflection.
Recent filings analysed: 10-Q (2026-07-23), 8-K (2026-07-22), 8-K (2026-05-19), 8-K (2026-05-11).
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