BigBear.ai Holdings, Inc. (BBAI Quick QuoteBBAI - Free Report) and Booz Allen Hamilton Holding Corporation (BAH Quick QuoteBAH - Free Report) operate in overlapping markets centered on U.S. national security, defense technology, Artificial Intelligence (AI), cybersecurity and government technology services. Both help government agencies use advanced technology to improve intelligence, strengthen security and support mission-critical decisions.

BigBear.ai is a specialized AI and decision-intelligence technology provider, with additional exposure to travel and trade, supply-chain operations, computer vision and digital identity. Meanwhile, Booz Allen is a broader advanced-technology and government solutions company, spanning national security, civil government and commercial customers, with substantial consulting, engineering, cybersecurity and defense technology capabilities.

Let's dive deep and compare the two stocks' fundamentals to determine which is the better investment now.

The Case for BigBear.ai Stock

New contract wins and a growing backlog provide visibility into BigBear.ai's potential future demand. Growing demand for AI and analytics across defense, intelligence, border security and civilian agencies is creating numerous opportunities for the company. Since the second quarter of 2026, BBAI has announced more than 25 new contracts representing more than $225 million in total contract value, including government recompetes and classified national-security awards. Its backlog increased 22% sequentially to $330 million at the end of the third quarter. The company also added customers such as the FBI, U.S. Coast Guard, NASA, the Department of Energy and the Department of Veterans Affairs.

BBAI reported third-quarter 2026 revenues of $43.6 million, up 31% year over year, marking its third consecutive quarter of growth. Management raised full-year revenue guidance to $150-$165 million, with the midpoint implying approximately 23% growth over 2025. The stronger outlook suggests recent contract wins and demand for secure AI solutions are beginning to translate into sales. Revenue growth also accelerated sequentially during the quarter, strengthening management’s confidence heading into year-end and 2027.

Besides, differentiated secure-AI capabilities offer another positive for BigBear.ai. Its model-agnostic approach allows customers to access multiple AI models and build workflows while handling sensitive information in secure or disconnected environments. The company also brings mission expertise and a security-cleared workforce, attributes that can be difficult for less-specialized competitors to replicate. Beyond national security, its digital-twin and predictive-analytics offerings serve critical infrastructure and healthcare customers. Almost $400 million in cash and investments give management resources to pursue product development and carefully selected acquisitions, provided these investments generate attractive returns.

However, persistent losses and negative adjusted EBITDA remain important risks for BigBear.ai. The company recorded a third-quarter 2026 net loss of $91.9 million against net income in the year-earlier period. Adjusted EBITDA was still negative at $9.1 million, showing that the business has not yet reached operating profitability on this measure. Selling, general and administrative expenses also increased, partly due to Ask Sage amortization, higher labor and headcount, and sales and marketing spending. Investors need evidence that revenue growth can eventually produce sustainable profits and stronger cash generation.

The Case for Booz Allen Stock

Booz Allen’s recent earnings performance and higher profit guidance support a positive investment case despite a challenging revenue environment. In the second quarter of fiscal 2027, adjusted earnings per share increased 18.1% year over year, with adjusted EBITDA margin also improving modestly, reflecting the company’s ability to protect profitability amid revenue pressures. Management raised its fiscal 2027 adjusted EPS guidance to $6.50-$6.70 from $6.00-$6.35, signaling confidence in execution and earnings resilience. Continued cost discipline and an improving technology-focused business mix could support earnings growth, although revenue conversion remains important.

BAH’s substantial backlog and resilient national security business provide visibility into future opportunities. Total backlog reached approximately $40.9 billion at the end of the second quarter of fiscal 2027, up 1.9% year over year. Demand is supported by defense modernization, geopolitical tensions, intelligence requirements and the need for advanced capabilities at the tactical edge. These factors position Booz Allen to compete for complex government technology programs. Strong backlog and funded awards could help offset weakness in civilian markets, provided contracts convert into revenues as expected.

Booz Allen’s investments in cybersecurity, AI and defense technology could create additional growth opportunities beyond traditional consulting services. The company is developing its Vellox agentic cybersecurity suite, including Guile, which is designed to counter AI-enabled attacks in real time and has entered private beta with government and commercial customers. Management also cited strong demand for Zero Trust capabilities and cybersecurity solutions across government and commercial markets. The acquisition of Ultra I&C Mission Solutions expands its portfolio of software-centric, hardware-enabled defense products and adds an established customer base. By combining proprietary technology with its security expertise and mission relationships, Booz Allen aims to build more scalable offerings.

However, BAH’s financial flexibility warrants attention as it invests in acquisitions and new technology capabilities. The balance sheet reflected approximately $4.4 billion in debt as of Sept. 30, 2026, with net leverage rising to 3.3 times from 2.5 times a year earlier. Recent acquisitions have contributed to Booz Allen’s strategic expansion but also increased integration and capital-allocation demands. If revenue growth remains subdued or expected acquisition benefits take longer to emerge, elevated leverage could limit financial flexibility and increase pressure to sustain cash generation.

Stock Performance & Valuation Trends: Clearing the Picture?

As witnessed from the chart below, shares of Booz Allen have outperformed those of BigBear.ai over the past six months.

Image Source: Zacks Investment Research

Considering valuation, over the last five years, BigBear.ai has been trading above Booz Allen on a forward 12-month price-to-sales (P/S) ratio basis.

Image Source: Zacks Investment Research

Overall, from these technical indicators, it can be deduced that BBAI stock offers a declining trend with a premium valuation, while BAH stock offers an improving growth trend with a discounted valuation.

Earnings Estimate Trends Are Poles Apart

The Zacks Consensus Estimate for BBAI’s bottom line for 2026 and 2027 indicates losses per share of 27 cents and 16 cents, respectively, which have remained unchanged over the past 60 days. However, the estimated figures for 2026 and 2027 imply year-over-year growth of 67.1% and 40.7%, respectively.

BBAI’s EPS Trend

Image Source: Zacks Investment Research

The Zacks Consensus Estimate for BAH’s fiscal 2027 and fiscal 2028 earnings has trended upward in the past seven days to $6.51 per share and $6.83 per share, respectively. The estimated figures for fiscal 2027 imply flat year-over-year growth, while the same for fiscal 2028 indicates year-over-year improvement of 4.8%.

BAH’s EPS Trend

Image Source: Zacks Investment Research

Return on Equity (ROE) of BBAI & BAH Stocks

Booz Allen’s trailing 12-month ROE of 75% significantly exceeds BigBear.ai's negative average, underscoring its efficiency in generating shareholder returns.

Image Source: Zacks Investment Research

Which Stock Has More Upside Potential: BBAI Stock or BAH Stock?

BigBear.ai offers substantial growth potential through new government contracts, expanding backlog and specialized secure-AI platforms. Its differentiated capabilities in intelligence, defense and border security, alongside adequate liquidity, could support expansion. However, persistent operating losses, negative adjusted EBITDA, rising expenses and uncertain cash generation remain significant concerns. 

Meanwhile, Booz Allen offers a stronger financial foundation, supported by substantial backlog, resilient defense demand and improving earnings expectations. Its investments in cybersecurity, AI and defense technology could create additional growth opportunities, while cost discipline supports profitability. However, elevated debt, acquisition integration challenges and subdued revenue growth could constrain financial flexibility.

Overall, Booz Allen stock appears to be the more compelling choice for investors seeking comparatively stronger fundamentals and greater earnings visibility. Its improving earnings outlook, established government relationships and superior profitability outweigh BigBear.ai stock’s more speculative growth opportunity. As both stocks currently carry a Zacks Rank #3 (Hold), investors considering either stock may favor BAH stock while waiting for clearer evidence of durable profitability from BBAI stock. You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.