Palantir's government AI TAM spans three distinct segments with very different growth profiles and addressability. (1) US Defense & Intelligence: The FY2026 DoD budget includes a first-ever standalone AI line item of $13.4B, of which $1.2B is 'enabling autonomy software' — Palantir's most direct addressable segment. The broader defense IT budget is $66B. Mordor Intelligence sizes the global defense AI & analytics market at $9.1B (2024) growing to $16.4B by 2029 (12.5% CAGR).
EU defense R&T spending reached EUR 5B in 2024, growing 27% YoY. The international government segment is Palantir's highest-growth TAM opportunity — currently under-monetized at ~$127M/quarter (Q2 2025) but with a massive NATO-Five Eyes-allied-nations runway.
Key Risk
DOGE-driven budget cuts threaten civilian IT spend (-20% proposed), but AI modernization may be exempted.
What share of the $1.2B DoD enabling software budget is realistically addressable by Palantir vs. Anduril, Shield AI, and other defense tech competitors?
STUB: Deep-dive into the $1.2B DoD enabling autonomy software budget line and adjacent software TAM. Research: breakdown by program (Maven, TITAN, CDAO programs), competitive share vs Anduril/Shield AI/Leidos, DIU pipeline, conversion rate from prototype to program of record.
STUB: Deep-dive into civilian federal agency AI adoption as a TAM driver. Research: agency-by-agency AI budgets (VA $18M, IRS modernization, HHS/CMS, DOE), DOGE impact on civilian IT spend, FedRAMP pipeline for civilian agencies, Palantir's existing civilian deployments (HHS during COVID, IRS?).
STUB: Deep-dive into international government TAM by region and alliance. Research: NATO Maven rollout across member nations, UK MoD expansion beyond GBP 240.6M, Australian Defence Force contracts, Canada defense AI investment ($925.6M sovereign AI), EU defense protectionism barriers, Five Eyes intelligence sharing platforms.
Golden Dome is the Trump administration's initiative to build a comprehensive US homeland missile defense system, announced via executive order on January 27, 2025. The White House initially estimated $175B in total cost; as of March 2026 the official estimate rose to $185B after additional space capabilities were added. Independent estimates range far higher — CBO projects $161-542B over 20 years, AEI estimates $252B to $3.6T depending on scope. The program is structured around the MDA's SHIELD contract vehicle ($151B ceiling, 10-year IDIQ, 2,400+ qualified vendors).
For Palantir, the critical development is its selection alongside Anduril to co-develop the command-and-control software layer — which program director Gen. Key bull case: Palantir's selection as a core C2 developer for the largest US defense program in decades validates the platform thesis and could generate multi-billion-dollar revenue over the 2026-2035 delivery timeline.
| Anduril | Space Force awarded first secret Golden Dome contracts in November 2025 to Anduril, Lockheed Martin, Northrop Grumman, and True Anomaly for space-based interceptor prototypes. Initial awards were $... |
| L3Harris | Key Golden Dome competitors by layer: Hardware/Interceptors — Lockheed Martin (on-orbit demo by 2028), Northrop Grumman (space-based interceptor), True Anomaly, Apex Space. Sensors — L3Harris and N... |
| Booz Allen | Key Golden Dome competitors by layer: Hardware/Interceptors — Lockheed Martin (on-orbit demo by 2028), Northrop Grumman (space-based interceptor), True Anomaly, Apex Space. Sensors — L3Harris and N... |
Key Risk
Guetlein calls Golden Dome's 'secret sauce.' This C2 'glue layer' coordinates radars, sensors, and missile batteries across all services, using AI for sensor fusion, threat evaluation, and automated shooter assignment.