The Advertiser: A New Kind of CustomerNarrow moat

Netflix (NFLX) — moat facet

Netflix's advertisers are its fastest-growing customers, and they buy through Amazon's tools as well as Netflix's own.

Netflix now sells to a second kind of customer: the advertiser. Advertising revenue more than doubled to over $1.5 billion in 20251, and the company expects about $3 billion in 20262. The ads plan runs in 12 markets3, and in the fourth quarter of 2024 it took over 55% of sign-ups in those countries4.

Advertising revenue ($bn)over 1.52025about 32026 expectedNetflix Q4 2025 and Q2 2026 shareholder letters
Roughly doubling in a year.

This customer behaves differently from a member. Advertisers buy through agencies and platforms and move budgets quickly. Netflix built its own ad technology, the Netflix Ads Suite, and integrated Amazon's demand-side platform globally and AJA's in Japan5, so buyers can reach its inventory through tools they already use.

It is still small: about 3.3% of 2025 revenue and about 5.9% of the 2026 guidance midpoint6. But it is growing far faster than subscriptions and lowers the entry price for members.

The risk is that advertising pulls Netflix toward the economics of television, where viewers are the product. So far the ads tier has added members rather than replaced paying ones.

The ads plan grew from nothing to scale quickly: Netflix said that in less than three years it went from zero members on the ads plan to sufficient scale in all 12 of its ads markets7. Scale is what advertisers buy, and the plan now has it.

The figure to follow is 2026 advertising revenue against the $3 billion expectation. A shortfall would say advertisers are less keen on Netflix's audience than members are on its shows.

Moat trajectory: Widening

Ads revenue over $1.5bn in 2025, ~$3bn expected in 2026.

The number that tests this moat
Reported
Advertising revenue, full year
Over $1.5bn (2025); about $3bn expected in 2026

The second customer's size; a 2026 shortfall would mean advertisers value the audience less than members do.

Source: Netflix Q4 2025 shareholder letter ↗
References
  1. ReportedAdvertising revenue more than doubled to over $1.5 billion in 2025, and the company expects about $3 billion in 2026.
    Netflix fourth-quarter 2025 shareholder letter, Form 8-K exhibit 99.1 - 325 million paid memberships, 2026 guidance, advertising revenue, named competitors, content licensing and the pause in buybacks. — Q4 2025 · publ. 20 January 2026 · source ↗
  2. ReportedAdvertising revenue more than doubled to over $1.5 billion in 2025, and the company expects about $3 billion in 2026.
    Netflix second-quarter 2026 shareholder letter, Form 8-K exhibit 99.1 - quarterly results, regional revenue, 2026 guidance, view hours, live programming and advertising - financial results, regional revenue and 2026 guidance. — Q2 2026 · publ. 16 July 2026 · source ↗
  3. ReportedThe ads plan runs in 12 markets, and in the fourth quarter of 2024 it took over 55% of sign-ups in those countries.
    Netflix third-quarter 2025 shareholder letter, Form 8-K exhibit 99.1 - the Brazil tax charge, the ads plan in 12 markets, US and UK view share and KPop Demon Hunters. — Q3 2025 · publ. 21 October 2025 · source ↗
  4. ReportedThe ads plan runs in 12 markets, and in the fourth quarter of 2024 it took over 55% of sign-ups in those countries.
    Netflix fourth-quarter 2024 shareholder letter, Form 8-K exhibit 99.1 - record net additions and ads-plan sign-ups. — Q4 2024 · publ. 21 January 2025 · source ↗
  5. ReportedNetflix built its own ad technology, the Netflix Ads Suite, and integrated Amazon's demand-side platform globally and AJA's in Japan, so buyers can reach its inventory through tools they already use.
    Netflix third-quarter 2025 shareholder letter, Form 8-K exhibit 99.1 - the Brazil tax charge, the ads plan in 12 markets, US and UK view share and KPop Demon Hunters. — Q3 2025 · publ. 21 October 2025 · source ↗
  6. Moat Explorer calcIt is still small: about 3.3% of 2025 revenue and about 5.9% of the 2026 guidance midpoint.
    Moat Explorer calculation from Netflix's reported financial statements, shareholder letters and market data ($ millions unless stated). Content amortization / revenue: 14,026.1 / 31,615.6 = 44.4% (2022); 14,197.4 / 33,723.3 = 42.1% (2023); 15,301.5 / 39,001.0 = 39.2% (2024); 16,422.2 / 45,183.0 = 36.3% (2025); Q2 2026 4,311.3 / 12,559.9 = 34.3%. Revenue growth 2022-2025: 45,183.0 / 31,615.6 - 1 = 43%; 2025 45,183.0 / 39,001.0 - 1 = 15.9%. Operating income 13,326.6 / 5,632.8 = 2.4 times. Gross margin (45,183.0 - 23,275.3) / 45,183.0 = 48.5% (2025); (33,723.3 - 19,715.4) / 33,723.3 = 41.5% (2023). Q3 2025 operating margin excluding the Brazil charge (3,248 + 619) / 11,510 = 33.6%. Additions to content assets Q2 2026 4,927.5 / 3,835.8 - 1 = 28%. Cash content spend = additions less change in content liabilities: 16,839.0 - 179.3 = 16,659.7 (2022), 12,554.7 + 585.6 = 13,140.3 (2023), 16,223.6 + 779.1 = 17,002.8 (2024), 17,096.6 + 610.8 = 17,707.5 (2025); ratio to amortization 16,659.7 / 14,026.1 = 1.19, 13,140.3 / 14,197.4 = 0.93, 17,002.8 / 15,301.5 = 1.11, 17,707.5 / 16,422.2 = 1.08. Licensed share of amortization 8,713.6 / 16,422.2 = 53%; licensed growth 8,713.6 / 7,689.0 - 1 = 13.3%; produced growth 7,708.6 / 7,612.5 - 1 = 1.3%. Produced share of content assets 20,639.8 / 32,778.4 = 63%; content assets / amortization 32,778.4 / 16,422.2 = 2.0 years. Tax incentives / produced amortization 1,000 / 7,708.6 = 13%; tax incentives / operating income 1,000 / 13,326.6 = 7.5%. Employees outside UCAN 16,000 - 10,900 = 5,100. Capex / revenue 688.2 / 45,183.0 = 1.5%; capex growth 688.2 / 439.5 - 1 = 57%. Free cash flow = operating cash flow less capex: 10,149.3 - 688.2 = 9,461.1 (2025); 7,361.4 - 439.5 = 6,921.8 (2024); 7,274.3 - 348.6 = 6,925.7 (2023); FCF / revenue 9,461.1 / 45,183.0 = 20.9%; FCF / net income 9,461.1 / 10,981.2 = 86%; capex / FCF 348.6 / 6,925.7 = 5.0%, 439.5 / 6,921.8 = 6.4%, 688.2 / 9,461.1 = 7.3%. Buybacks / FCF 9,127.2 / 9,461.1 = 96%; buybacks 2024 + 2025 6,263.7 + 9,127.2 = 15,390.9; diluted shares 4,261 / 4,349 - 1 = -2.0%; remaining authorization 27.1 / 296.24 = 9%. Year-end P/E = market value / net income: 213.10 / 5.408 = 39.4 (2023), 381.00 / 8.712 = 43.7 (2024), 397.29 / 10.981 = 36.2 (2025), trailing 296.24 / 13.650 = 21.7. Net debt / equity end 2025 (14,462.8 - 9,033.7 - 28.7) / 26,615.5 = 0.20; interest / operating income 776.5 / 13,326.6 = 5.8%; termination fee / 2025 net income 2,800 / 10,981.2 = 25%; ROE 10,981.2 / ((26,615.5 + 24,743.6) / 2) = 43%; net income growth 10,981.2 / 8,711.6 - 1 = 26%. Pre-tax income 2025 10,981.2 + 1,741.4 = 12,722.6, one point of tax rate = 127; six points = 763. UCAN ARM 17.20 / 15.86 - 1 = 8.4%; UCAN net additions 80,128 - 74,296 = 5,832 (2023), 89,625 - 80,128 = 9,497 (2024); paid memberships growth 301,626 / 260,276 - 1 = 16%; top plan price 37 / 32 - 1 = 15.6%. Obligations: due in 12 months / revenue 11,528.0 / 45,183.0 = 25.5%; obligations / debt 25.1 / 14.3 = 1.75; off balance sheet 18.4 / 24.0 = 76% (end 2025), 19.6 / 25.1 = 78% (June 2026). Advertising: 1.5 / 45.2 = 3.3% of 2025 revenue; 3.0 / 51.2 = 5.9% of the 2026 guidance midpoint (51.0 + 51.4) / 2 = 51.2. Nielsen gap 13.8 - 8.0 = 5.8 points. Regions: 2025 shares UCAN 19,957.2 / 45,183.0 = 44.2%, EMEA 14,514.6 / 45,183.0 = 32.1%, LATAM 5,357.5 / 45,183.0 = 11.9%, APAC 5,353.7 / 45,183.0 = 11.8%; Q2 2026 UCAN 5,432 / 12,560 = 43.2%. UCAN growth 14,873.8 / 14,084.6 - 1 = 5.6% (2023), 17,359.4 / 14,873.8 - 1 = 16.7% (2024), 19,957.2 / 17,359.4 - 1 = 15.0% (2025). EMEA memberships 101,133 / 76,729 - 1 = 31.8%; APAC memberships 57,541 / 38,023 - 1 = 51.3%; APAC revenue 5,353.7 / 3,570.2 - 1 = 50%. UCAN share of 2022 streaming revenue 14,084.6 / 31,469.9 = 44.8%. Memberships 2022-2024: UCAN 89,625 / 74,296 - 1 = 20.6%, LATAM 53,327 / 41,699 - 1 = 27.9%. ARM gap UCAN less APAC 15.86 - 8.50 = 7.36 (2022), 17.20 - 7.29 = 9.91 (2024). H1 2026 revenue 24,809.7 / 51,200 = 48.5% of the guidance midpoint. Diluted shares 4,343,863 / 4,494,966 - 1 = -3.4%. Average buyback price Q2 2026 4.7bn / 52.93M shares = about $89; 2025 9,127.2 / 86.54M shares = about $105; 71.15 / 105 - 1 = -32%. Analyst target 92.93 / 71.15 - 1 = 31%. US revenue 18.5 / 13.8 - 1 = 34%. Hedging swing 124 - (-91) = 215. Revenue 2023-2025 45,183.0 / 33,723.3 - 1 = 34%; employees 16,000 / 13,000 - 1 = 23%. Q2 net income 3,401 / 3,125 - 1 = 8.8%. DVD revenue = total revenue less streaming revenue: 33,723.3 - 33,640.5 = 82.8 (2023); 31,615.6 - 31,469.9 = 145.7 (2022) - content costs, margins and capital spending. — 2015-2026 · publ. September 2026 · source ↗
    Method: Arithmetic on figures reported in Netflix's Forms 10-K and 10-Q, shareholder letters, Nielsen's May 2026 Gauge and market data; operands shown in the source line.
  7. ReportedThe ads plan grew from nothing to scale quickly: Netflix said that in less than three years it went from zero members on the ads plan to sufficient scale in all 12 of its ads markets.
    Netflix third-quarter 2025 shareholder letter, Form 8-K exhibit 99.1 - the Brazil tax charge, the ads plan in 12 markets, US and UK view share and KPop Demon Hunters. — Q3 2025 · publ. 21 October 2025 · source ↗
Sources
Generated September 26, 2026