Defense
A primary internal company segment within Drone Defense, derived deterministically from the shared yc tag “Defense”. This is a classification of current window members, not a causal layer or a separate time trend.
2/564 → 17/777; +1.83 percentage points of formation share.
The seventeen companies here split cleanly into two camps that rarely get lumped together: the shooters and the sensors. Isengard Industries, Tenet Industries, and Seeing Systems are racing to mass-produce cheap strike and interceptor drones, while Milliray, Arlo Industries, and Vernius Systems are working the quieter problem of finding and tracking the things in the first place, since a $50 hobbyist drone can still slip past most radar built for jets and missiles. A layer above both is emerging too, with Surtr Defense Systems building an operating system to fuse sensor feeds regardless of hardware and Maquoketa Research pitching itself outright as "the intelligence layer for drones," suggesting the harder fight is shifting from who builds the best drone to who can stitch together everyone else's sensors and shooters into one loop. The domain is also stretching well past its old battlefield definition: AICE is doing the same swarm logic underwater, IMPACT is selling interception as a subscription service for data centers and power grids, and Ornadyne's bird-shaped reconnaissance drones exist specifically to defeat the acoustic and visual detection methods other companies in this same group are busy building. This formation's 6.17x growth is outpacing the broader Defense category's 4.63x and Aerospace's 2.60x, which points to counter-drone work specifically, not defense spending generally, as the driver. Much of this urgency traces to a very concrete lesson: cheap FPV and swarm drones proved decisive in Ukraine from 2022 onward and again in Red Sea and Gulf attacks on infrastructure, exposing how few Western systems were built to stop a $500 threat rather than a fighter jet, and that gap is exactly what 9 Mothers, already at $1.6m in DoW sales, and its peers are now racing to close.
Description classified into Drone Defense.
Description classified into Drone Defense.
Description classified into Drone Defense.
Description classified into Drone Defense.
Description classified into Drone Defense.
Description classified into Drone Defense.
Description classified into Drone Defense.
Description classified into Drone Defense.
Description classified into Drone Defense.
Description classified into Drone Defense.
A primary internal company segment within Drone Defense, derived deterministically from the shared yc tag “Defense”. This is a classification of current window members, not a causal layer or a separate time trend.
A primary internal company segment within Drone Defense, derived deterministically from the shared yc tag “Drones”. This is a classification of current window members, not a causal layer or a separate time trend.
Measured-window members of Drone Defense that could not be assigned to a narrower shared YC tag or industry without forcing a classification.
No comparable outside activity is connected yet.
These share a word with “Drone Defense” but are tracked as separate categories. The real overlap below is the actual share of Drone Defense’s companies also found in that category — not a guess.
Cambrian Signal, “Drone Defense,” publication yc-2026-10-02-semantic-v8, snapshot October 2, 2026.
cambrian.jafar.com/formation/drone-defense