Berkshire Hathaway has significantly expanded its equity position in Delta Air Lines, increasing its stake by 44% to reach a total of 57.3 million shares. The investment activity was disclosed in a filing submitted to the US Securities and Exchange Commission.

Transaction Details

The filing confirms the accumulation of additional shares, reflecting a continued commitment from Warren Buffett’s conglomerate to the aviation sector. The total holding now stands at 57.3 million shares following the increase.

No further details regarding the purchase price, timing of individual transactions, or strategic rationale were provided in the brief disclosure.

Delta Air Lines Inc. (NYSE: DAL) is investigating an unauthorized Wi-Fi network detected aboard Flight 591, a Boeing Co. (NYSE: BA) 757 jet traveling from Las Vegas to Atlanta on Monday. The incident, reported by Bloomberg on Tuesday, involved cabin crew discovering a fake network onboard, prompting pilots to inform air traffic control and briefly disable the aircraft’s Wi-Fi for roughly 30 minutes as a precaution. The flight carried 199 passengers and six crew members, including attendees returning from DEF CON, a major cybersecurity conference in Las Vegas.

The airline stated that the safety of the flight was never in question and no aircraft operating systems were affected. Cybersecurity reports have described the incident as a possible "evil twin" attack, in which an unauthorized access point mimics a legitimate Wi-Fi network to potentially trick users into connecting. Pilots noted concerns that the network was created to scam passengers. Delta did not immediately respond to requests for comment regarding the probe.

Incident Details

Market Reaction

Shares of Delta Air Lines Inc. were up 0.09% to $90.49 during pre-market trading on Wednesday following the report. The incident highlights ongoing cybersecurity risks in aviation, particularly when flights carry high-profile technology attendees.

Broader Context

The incident comes amid broader scrutiny of the airline industry. United Airlines Holdings Inc. (NASDAQ: UAL) had reportedly approached Delta about a potential merger before its failed talks with American Airlines Group Inc. (NASDAQ: AAL). Sen. Elizabeth Warren (D-Mass.) had accused both United and Delta of benefiting from favorable policies, including changes to flight cancellation compensation rules, after the airlines contributed $1 million to President Donald Trump’s inauguration fund.