Berkshire Rebuilds Delta Stake Under Abel, Signaling Confidence but Not Changing Valuation

What happened

Greg Abel, Berkshire Hathaway's CEO, has increased the conglomerate's ownership in Delta Air Lines by 44% to an 8.7% stake, reversing Warren Buffett's 2020 decision to exit airline equities. The move marks a notable endorsement of Delta's premium-and-loyalty strategy, which has driven record revenue and free cash flow in recent years. However, Berkshire's position remains relatively small in context of its massive portfolio, and the purchase may reflect a macro view on travel demand rather than a company-specific deep value call. The stake increase comes as Delta trades around $68, below our $80 trim level but above our $60 attractive entry point, leaving the risk-reward profile unchanged. While the endorsement could bolster sentiment, it does not address the key risks we monitor: wage inflation, credit-card regulation, and main-cabin demand weakness.

Implication

The Berkshire endorsement adds a layer of institutional validation to Delta's premium-heavy business model, potentially reducing the perceived probability of severe downside scenarios. Yet, the stake boost does not change the fundamental economics: Delta still faces labor cost resets, regulatory risk on co-brand revenue, and a bifurcated demand environment. Our base case of ~$7 EPS and $3–4B free cash flow in 2026 supports a fair value around $75, leaving limited upside from the current $68 price. The news may cause short-term positive price action, but long-term investors should remain patient for a better entry near $60 or wait for confirmation that cost and demand risks are contained. Given the concentrated nature of the airline industry's risks, we maintain our WAIT rating and suggest using any Berkshire-inspired rally to trim positions above $80.

Thesis delta

The Berkshire stake increase modestly strengthens the bull case by suggesting that a sophisticated investor sees durable value in Delta's premium and loyalty franchise, but it does not resolve the core uncertainties around labor costs, co-brand economics, and main cabin weakness. Our valuation framework remains unchanged: the stock is fairly valued between $60 and $80, and we see no reason to alter our WAIT rating. The endorsement may reduce the likelihood of a deep value trap, but it also risks amplifying a crowded long trade if sentiment overshoots.