⚠ A Number That Cannot Fall Is Not the Same as a Number That RisesModerate threat

Intuitive Surgical (ISRG) — threat to the moat

The annuity is a lagging function of a capital decision somebody made three years ago.

The recurring line is a lagging function of a capital decision somebody made two or three years earlier. It is durable, not self-generating.

What the recurring line actually depends on9,902Installed base 202411,106Installed base 20251,526Placements 20241,721Placements 2025The base grew 12% and placements 13%. Both are capital decisions taken by somebody else.
Recurring revenue is a lagging function of placements made two or three years ago. Slow the placements and it stops accelerating rather than falling.

The arithmetic runs one way: a system is placed, it accumulates procedures, procedures consume instruments, and the instruments produce recurring revenue for as long as the system is used. So the 84% depends on the installed base growing, and the installed base grew 12% in 2025 to about 11,106 da Vinci systems1 on 1,721 placements. Slow the placements and the recurring line does not fall — it stops accelerating, which for a company priced on growth is nearly the same event.

The company is candid about what governs placements, and it is a long list of things it does not control: supply-chain risks, economic and geopolitical factors, inflation, high interest rates, hospital staffing constraints, procedure growth rates, capital replacement trends including a declining number of older systems available for trade-in, reimbursement in markets such as Japan, and the timing of governmental tenders including "the governance campaign in China"2.

There is a second-order effect specific to the current moment. Because 51% of placements are now operating leases3, a system that would once have produced $1.6 million of upfront revenue now produces a stream. That is better economics over the life of the asset and worse reported revenue in the year of placement, and it makes the systems line an unreliable read on demand.

Watch placements rather than systems revenue — 1,721 in 2025 and 468 in the June 2026 quarter, both growing. Placements are the leading indicator; recurring revenue is the echo.

References
  1. ReportedSo the 84% depends on the installed base growing, and the installed base grew 12% in 2025 to about 11,106 da Vinci systems on 1,721 placements.
    Intuitive Surgical Form 10-K, fiscal year ended December 31, 2025 - Item 7 MD&A, business and operating highlights (3,153,000 da Vinci procedures up 18%, 1,721 placements, an installed base of 11,106, utilisation up about 3%, 870 da Vinci 5 placements, Ion procedures and placements, procedures by region and category, and revenue denominated in foreign currencies) — FY2025 · publ. February 3, 2026 · source ↗
  2. ReportedThe company is candid about what governs placements, and it is a long list of things it does not control: supply-chain risks, economic and geopolitical factors, inflation, high interest rates, hospital staffing constraints, procedure...
    Intuitive Surgical Form 10-K, fiscal year ended December 31, 2025 - Item 7 MD&A, results of operations (instruments and accessories $6,018.9M, systems $2,473.7M, service $1,572.1M, recurring revenue $8,465.3M, gross margin 66.0%, operating income $2,945.5M, average selling price, lease revenue recognition, and the discussion of procedure categories) — FY2025 · publ. February 3, 2026 · source ↗
  3. ReportedBecause 51% of placements are now operating leases, a system that would once have produced $1.6 million of upfront revenue now produces a stream.
    Intuitive Surgical Form 10-K, fiscal year ended December 31, 2025 - Item 7 MD&A, business and operating highlights (3,153,000 da Vinci procedures up 18%, 1,721 placements, an installed base of 11,106, utilisation up about 3%, 870 da Vinci 5 placements, Ion procedures and placements, procedures by region and category, and revenue denominated in foreign currencies) — FY2025 · publ. February 3, 2026 · source ↗
Sources
Generated September 23, 2026