FTNT, Fortinet Inc.

Will it survive?

• Can it pay its interest? 103.7×
  Comfortable
  Operating income $2.1B ÷ interest expense $20M
  What this means

  Operating profit covers interest with the kind of margin Graham wanted for a defensive holding. Necessary, not sufficient, it says solvent, not cheap.

• How heavy is the debt, net of cash? +$2.6B
  Net cash
  Cash $2.5B + ST investments $1.1B − debt $996M
  What this means

  Cash and short-term investments exceed every dollar of debt by $2.6B, on net the company owes nothing, and can act from strength when others can't. Net debt is the leverage figure that matters: the cash is already set against the debt. Strategic or illiquid investments aren't counted here.

• How long is cash tied up? 137d
  Long (60+ days)
  DSO 91 + DIO 110 − DPO 63 days
  What this means

  Days cash is tied up between paying suppliers and collecting from customers. Lower is better; a long cycle means growth itself eats cash.

Is it a good business?

• Return on invested capital —
  Not meaningful here
  Invested capital ($262M) = debt $996M + equity $1.2B − cash
  Industry peers: median 6%
  What this means

  Invested capital is near zero or negative, usually years of buybacks pulling equity down. ROIC explodes or flips sign and stops meaning anything. Judge this one on Owner Earnings instead.

• Owner-earnings margin 36%
  High through the cycle
  9-yr median margin, range 32%–42%; latest $2.4B = operating cash $2.6B − maintenance capex $152M
  Industry peers: median 11%
  What this means

  What an owner could take out without starving the business: operating cash less the maintenance capital it must spend to hold its position — Buffett's owner earnings. That's 36% of revenue this year, a 36% median across 9 years. Treating stock comp as the real expense it is (less $280M of SBC) leaves $2.2B.

• Are earnings backed by cash? 1.40×
  Cash-backed
  Cash from ops $2.6B ÷ net income $1.9B
  What this means

  How much of reported profit showed up as operating cash. Above 1× is reassuring; well below suggests earnings lean on accruals. One year is noisy, growth and working-capital swings distort it, and this is operating cash, not free cash. Watch the multi-year trend.

How is the cash used?

• Where do the earnings go? 94%
  Returns most of it
  Dividends + buybacks $2.3B ÷ Owner Earnings $2.4B — this fiscal year
  What this means

  Of $2.4B Owner Earnings, $2.3B (94%) went back to shareholders, $0 dividends, $2.3B buybacks. Net of $280M stock comp, the real buyback was about $2.0B. Returning most of it is the mark of a mature business with little left to reinvest at a high return; reinvesting most could mean a long runway, or empire-building. The split doesn't say which; the return earned on it (see ROIC) does. This year's proportion is 94%; across the record (2017–2025) it is 68%, the capital-allocation section below.

• Investing or harvesting? 2.40×
  Expanding
  Capex $365M ÷ depreciation $152M
  What this means

  Descriptive, not a grade. Above ~1× means investing faster than assets wear out (growth, or, sustained for years, today's earnings carrying less depreciation than tomorrow's will). Below means spending less than it's wearing out (efficiency, or a melting asset base). The ratio won't tell you which; the filings will.

The promise and the pay packet

• What does winning a customer cost? 35%
  Heavy selling cost
  Selling and marketing $2.3B ÷ revenue $6.8B
  What this means

  Sales and marketing as a share of revenue, kept apart from administrative overhead because it answers a different question: how much a business must spend to win the next customer. A company whose product pulls customers in spends little here and keeps the difference; one that must buy its growth is running to stand still, and the spending has to keep rising for revenue to keep rising. Read it beside the growth rate, not alone.

• Is the buyback buying ownership, or mopping up? 4.1%
  The count is genuinely shrinking
  Stock compensation $280M (fiscal 2025), 4.1% of revenue · repurchases $2.3B · diluted shares -5.1% since 2022
  What this means

  Stock handed to employees is a real cost paid in the owner's own currency: it is charged against profit, but the shares it creates are permanent. Many companies repurchase stock at the same time, which looks like a return of capital and often is not — if the count barely moves, the cash merely cancelled the pay packet and bought the owner nothing. The three states worth telling apart are a count genuinely shrinking, a count standing still despite large repurchases, and a count rising because the issuance was never offset at all.

Graham’s defensive tests · 3 of 5 met

Graham’s numerical criteria for the defensive investor (The Intelligent Investor, ch. 14), run on the filings. A floor of safety, not a buy signal; many fine modern businesses fail his strictest liquidity rules by design.

• Adequate size Pass
  Revenue ≥ $2B · $6.8B
  What this means

  Big enough to weather a storm. Graham's 1972 floor was ~$100M of sales (≈ $700M today); we use a $2B revenue line as a conservative modern stand-in.

• Strong liquidity Miss
  Current ratio ≥ 2× · 1.17×
  What this means

  Current assets at least twice current liabilities, near-term bills covered without touching the business. Strict by design: many cash-rich modern firms run leaner and miss it, holding their cushion in longer-dated securities.

• Conservative debt Near
  Debt ≤ working capital · $996M vs $866M WC
  What this means

  Graham's rule that borrowings not exceed net current assets. Capital-heavy and buyback-heavy firms routinely fail it, read it next to interest coverage, not alone.

• Earnings stability Pass
  A profit every year (9-yr record) · no losses
  What this means

  Graham wanted earnings in each of the past ten years, the stability a defensive owner leans on.

• Dividend record —
  Uninterrupted dividends · no dividend line tagged in the data
  What this means

  An unbroken dividend was Graham's mark of durability. This record carries no dividends-paid line in any year — common for partnerships, whose distributions file under tags the chain doesn't read — so the criterion is withheld rather than judged on silence.

• Earnings growth Pass
  Earnings +33% over the record · +580%
  What this means

  At least a third more earnings than a decade ago, averaging three years at each end. Net income (not per-share), so stock splits don't distort it, buybacks and dilution show up in the share-count line instead.

• Moderate price —
  P/E ≤ 15 and P/E × P/B ≤ 22.5 · decided by the price
  What this means

  Graham's valuation gate, the wall he kept between a sound business and a sound investment. Three-year average earnings are $2.16/share (latest year $2.53), the averaged base the calculator's gate runs on, and book value is $1.69/share. Enter a price in “What the price implies” just below for the P/E, P/B, and whether it clears. But this is the rule Buffett outgrew: there's no hard P/E law, and a wonderful business can deserve a far richer multiple if the thesis holds, treat it as the bargain-hunter's floor, not a verdict on the price.

Durability & moat, 2017–2025

Whether the record’s returns held, and what the capital reinvested earned.

• Profitable years 9 of 9
  What this means

  Never lost money over the record, the earnings stability Graham insisted on.

• Operating margin 12% → 28% (3-yr avg ends)

  In the filing’s words The record and the words agree: the margin widened and the filing attributes the gain to its own pricing, not volume alone.

  What this means

  Through the cycle the operating margin widened — about 12% early to 28% lately, median 20% — pricing power intact or improving.

• Reinvestment, incremental ROIC returns capital
  What this means

  The capital base barely grew: this business returns cash through dividends and buybacks rather than reinvesting. Judge it on the cash returned, not on compounding.

• Owner earnings growth +19%/yr
  What this means

  Owner earnings grew about 19% a year over the record.

• Worst year 2017 · 7.3% op. margin
  What this means

  Stayed profitable even in its hardest year, the resilience that survives recessions.