Berkshire Hathaway Expands Investment in Delta Air Lines

A Strategic Shift in Airline Investment

Buffett's Past Caution and Berkshire's Recent Re-engagement with Airlines

For many years, Warren Buffett, the legendary investor, voiced considerable apprehension regarding the airline industry, often labeling it a 'capital trap' due to its susceptibility to fluctuating fuel costs and intense fare competition. This view led Berkshire Hathaway to divest its entire airline portfolio during the onset of the COVID-19 pandemic in 2020, incurring significant losses and highlighting Buffett's belief that the industry's landscape had fundamentally altered.

Berkshire Hathaway's Growing Stake in Delta Air Lines

Despite previous concerns, Berkshire Hathaway has recently made a significant U-turn, building up a substantial position in Delta Air Lines. Recent financial disclosures, specifically 13F filings, reveal that Berkshire's investment in Delta surged by an impressive 44% in the second quarter of 2026, reaching 57.3 million shares. This expanded holding was valued at approximately $5.4 billion by the end of June, indicating a strong conviction in the airline's future.

Leadership Transition and Investment Philosophy Under Greg Abel

This increased investment in Delta comes under the leadership of Greg Abel, who assumed the role of CEO of Berkshire Hathaway in January. Abel, in his communications to shareholders, has emphasized a disciplined and focused investment approach, particularly favoring 'core' positions that the firm intends to retain. The substantial and rapidly growing investment in Delta aligns perfectly with this strategy, suggesting that Abel and his team perceive a lasting value proposition in the airline.

Delta's Financial Resilience and Diversified Revenue Streams

Delta Air Lines' recent financial performance provides a compelling rationale for Berkshire's heightened interest. The airline reported an impressive $17.7 billion in revenue for the second quarter of 2026, marking a 14% increase year-over-year, despite a modest 1% growth in capacity. Pretax profits reached $1.4 billion, with earnings of $1.56 per share and an operating margin of 9%, all surpassing initial forecasts. Furthermore, Delta's return on invested capital stood at 11%, comfortably exceeding its cost of capital.

Strategic Initiatives Driving Delta's Growth

A key factor in Delta's success is its reduced reliance on traditional ticket sales. The airline has successfully diversified its revenue streams, with premium seating, loyalty programs, cargo operations, and maintenance services accounting for 61% of its total revenue during the quarter. Notably, premium and loyalty revenues each saw nearly 20% growth, while cargo revenue increased by 39%, and the third-party maintenance business expanded by over 30%. The robust partnership with American Express also plays a crucial role, with card spending showing double-digit growth for seven consecutive quarters.

Strengthening Delta's Balance Sheet

Delta has also demonstrated a strong commitment to enhancing its financial stability. The company's total shareholders' equity has steadily grown, reaching $21.8 billion, while its long-term debt has seen a consistent decline, dropping to $10.5 billion by the end of Q2. Delta concluded the June quarter with an adjusted net debt of $13.6 billion and anticipates reaching a gross leverage of 2x by year-end, with a long-term goal of 1x. This prudent financial management has earned the airline investment-grade ratings from all three major credit rating agencies, supported by significant operating and free cash flow generation.

Future Outlook and Investor Confidence

Delta remains optimistic about its future, projecting full-year earnings between $6.50 and $7.50 per share, representing a 20% increase from the previous year, along with $3 billion to $4 billion in free cash flow. Management also aims for mid-teen operating margins and returns on invested capital in the long term. CEO Ed Bastian attributes this positive outlook to fundamental shifts in the industry, including reduced discount capacity, increased loyalty spending, and diversified revenue, which are expected to sustain momentum even if fuel prices stabilize. Berkshire Hathaway's continued and expanding investment in Delta underscores a belief in the airline's enduring strength and its promising trajectory.