ROBack of Napkin
Roku, Inc. ROKU
Written 2026-07-03. The company has filed a quarterly or annual report since, on 2026-08-06, so figures here predate its latest disclosure.
Roku just printed its first full year of GAAP net income ($88M in 2025) and doubled free cash flow to $478M, and the stock has re-rated ≈1.8x off its 52-week low to $142 as the market recognized the advertising/OS platform finally out-earning its loss-leader hardware.
You are paying ≈9x trailing gross profit for the largest US connected-TV distribution layer at the exact moment its cash economics inflected; the asymmetry is whether Platform revenue keeps compounding high-teens with expanding margin, or whether the FCF turn is already the whole story now sitting in the price.
Key data
ROKU · price with moving averages
Source: market data.
The business
Roku sells two things. It makes streaming players and licenses the Roku operating system to television manufacturers, booked as the Devices segment, and it monetizes the resulting installed base through advertising, The Roku Channel, premium-subscription sign-ups, and content distribution, booked as the Platform segment. The concentration is stark: Platform is essentially the entire profit engine. In FY2025 Platform generated $4.145B of the $4.737B total revenue (about 87%) at a 52% gross margin, while Devices ran $592M at a negative 14% gross margin, an intentional loss leader that buys households Roku then monetizes for years. Advertising is the largest slice of Platform at $2.33B (58% gross margin) with subscriptions the second at $1.82B (45% gross margin). Put plainly, the hardware is customer acquisition; the money is made selling ads and subscriptions against the 100M-plus streaming households the hardware seeded.
The thing the financials do not show is that Roku has spent the last two years converting from a device-and-ARPU story into a monetized OS-and-inventory story. It crossed 100 million streaming households worldwide in Q1 2026 with 38.7 billion streaming hours in the quarter (up 8%), it stopped disclosing quarterly Platform ARPU in early 2025 (a signal management wants the market watching Platform revenue and engaged monetization rather than a single blended number), and it has been pushing The Roku Channel and the home screen as owned-and-operated advertising inventory it does not have to share. What changed in the last two quarters is the profit mix: the ad and subscription businesses scaled past the fixed cost base, so incremental Platform dollars now drop through at high margin, which is what flipped GAAP operating losses to near-breakeven and cash flow sharply positive. The competitive frame is unchanged and real, Amazon Fire TV, Google TV, and Samsung and LG native platforms fight for the same living-room OS position, while Amazon and The Trade Desk compete hard for the connected-TV ad dollars Roku needs to keep winning as buying shifts programmatic.
Inside the complete Back of Napkin
- 01The business
- 02The numbers
- 03Management
- 04The linchpins
- 05Closing
- 06Methodology
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