Shares of BigBear.ai (NYSE: BBAI) soared as much as 17.4% during intraday trading on Thursday, ultimately holding a 13.6% gain by mid-afternoon. This surge brings the company’s market capitalization to roughly $2.4 billion, capping an astounding rise of more than 220% over the past three months. This extraordinary momentum has occurred despite an absence of major business-specific news, underscoring the shifting dynamics currently fueling bullish sentiment among investors in the Artificial Intelligence (AI) and defense technology sectors.

AI Defense Stocks Surge Amid Geopolitical Uncertainty

The renewed appetite for AI-driven defense technology stocks is part of a broad-based trend gripping Wall Street throughout 2025. With international tensions running high in regions such as Eastern Europe and the Indo-Pacific, both U.S. government defense budgets and allied nations’ military expenditures on digital modernization are reaching new heights. Gartner estimates that global defense IT spending will top $90 billion in 2025, a figure projected to rise as AI, machine learning, and data fusion capabilities become integral to national security strategies.

BigBear.ai, which builds advanced AI and data analytics platforms for defense, intelligence, and critical infrastructure clients, has been a notable beneficiary of these trends. Although Thursday brought no fresh contract announcements or product launches from BigBear.ai, favorable momentum in the broader AI market—and in defense-focused peer Palantir Technologies (NYSE: PLTR), whose shares hit a new record—appeared to spill over into BBAI’s price action.

Palantir’s dominance in high-profile DoD and NATO contracts has made it a bellwether for the sector, and price moves in PLTR frequently trigger sympathy rallies in smaller defense tech names. As Palantir reported robust second-quarter results, and the S&P 500 and Nasdaq indices continued to post new market highs, investors rushed to reposition into what they perceive as next-generation winners in the digital arms race.

Valuation Surges: Fundamentals or FOMO?

BigBear.ai’s valuation has climbed to roughly 14 times this year’s expected sales, a premium typically reserved for mature SaaS or AI infrastructure leaders with dominant market positions. Market enthusiasm has outpaced fundamental developments: The company’s revenue guidance for 2025, released in its May quarterly report, targets 25–30% topline growth—solid but not yet matched by major new Pentagon contracts or technology partnerships.

Some analysts advise caution. “There’s a risk here that valuation disconnects from execution,” said Mark Jensen, technology research director at Vantage Investments. “The AI sector is heating up fast, but sustained price appreciation typically follows material news—such as contract wins, major customer onboarding, or breakthrough product launches.”

Historical precedent bears out this view. In mid-2023, BigBear.ai’s shares doubled following an $8.5 million U.S. Army contract—a deal which accounted for over 10% of its annual revenue. While the AI opportunity in defense is immense, future returns will likely hinge on the company’s ability to win, retain, and scale federal and allied contracts, especially with heavyweights like Palantir, Microsoft, and Anduril Innovations competing aggressively in the space.

Broader AI Market Lifts All Boats

BigBear.ai is not alone in this surge. AI adoption across all industries has led to exceptional stock market returns for sector leaders. Benchmark names like Nvidia, Alphabet, and Microsoft continue to hit all-time highs, as investors bet aggressively on AI’s world-changing potential—from autonomous defense systems to next-generation cybersecurity and logistics optimization.

According to IDC’s 2025 forecast, global spending on AI is expected to cross $500 billion this year, making it one of the fastest-growing segments in technology. While BigBear.ai’s customer base is concentrated in defense and critical infrastructure, management has signaled plans to expand offerings into adjacent sectors—including health and transportation analytics—to diversify growth streams going forward.

What Comes Next for BigBear.ai?

Shareholders and prospective investors are now looking for the next catalyst: Will BigBear.ai secure another large government contract? Will it announce major partnerships, perhaps with cloud hyperscalers or allied defense integrators? Or will the recent price action prove to be a short-lived rally driven mostly by sector momentum and investor speculation?

The company’s leadership has reiterated its focus on combining AI with secure, scalable data integration platforms, targeting federal, intelligence, and logistics clients. Investors should watch for the upcoming Q3 earnings call, scheduled for early August, where management may provide updates on its deal pipeline or guidance upgrades.

Meanwhile, market experts advise grounding investment decisions in company fundamentals. “As a growth stock with government exposure, BigBear.ai offers attractive upside—but execution risk remains high. Investors should demand evidence of sustainable revenue growth and contract wins before chasing elevated valuations,” Jensen added.

Should You Invest in BigBear.ai?

The decision to buy shares in BigBear.ai depends on risk appetite and investment horizon. On one hand, the AI-driven transformation of the defense sector is a long-term growth opportunity, supported by robust U.S. and allied government funding. On the other, BigBear.ai faces stiff competition and the possibility that predictions of exponential AI adoption will take longer to materialize than current valuations suggest.

For those bullish on AI’s impact in defense, BigBear.ai is a company to watch closely. However, investors should carefully weigh recent price moves, set realistic expectations, and consider diversifying across several sector leaders to mitigate risk inherent in such fast-moving, news-sensitive stocks.

Disclosure: The author owns no shares in the companies mentioned. This article is for informational purposes and does not constitute investment advice. Always consult a financial advisor before making investment decisions.