U.S. Government Consulting Firm Loses Over $1 Billion in a Day

Booz Allen Hamilton Holding Corp (NYSE: BAH) saw its share price plunge 11.24% to close at $79.79 on February 11 at the New York Stock Exchange, wiping out roughly $970 million in market value in a single day and bringing its total market capitalization down to about $9.6 billion.

The sell-off was triggered by the U.S. Treasury Department’s cancellation of 31 contracts worth a combined $21 million in response to the IRS taxpayer data breach, compounded by disappointing revenue and a downward revision to fiscal 2026 guidance disclosed in the company’s earnings report. Together, these developments have fueled mounting concerns over Booz Allen’s credibility and growth prospects.

On the same day, the firm announced a quarterly dividend increase and several institutional investors reported stake increases, but these positive signals did little to stem the share-price decline amid structural headwinds—including trimmed financial guidance, reduced government contracting and a CFO transition.

Founded in 1914, Booz Allen Hamilton is a leading U.S. government and defense consultancy, providing management consulting, technology and cybersecurity services to the Department of Defense, U.S. intelligence agencies and federal civilian departments. The company generates annual revenues in excess of $10 billion.

The IRS data breach at the center of this controversy involved former employee Charles Littlejohn, who between 2018 and 2020 illicitly removed sensitive tax records for approximately 406,000 individuals and leaked them to the media. The incident has been widely viewed as a severe blow to Booz Allen’s security and compliance capabilities as a contractor entrusted with government secrets.