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Position · Core / Quality Compounders

Fortinet Inc (FTNT)

1.59% of book · Avg. cost $84.30 · Return +92.11%

Compare vs. competitors: Palo Alto Networks vs. Fortinet vs. CrowdStrike →

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Download full 3-statement model (.xlsx) →

Thesis StatementFortinet's billings consistently outpace its already-strong revenue growth, a leading indicator that enterprise cybersecurity demand is accelerating, not just holding steady.

FTNT Fortinet Inc
AEA Institutional Tear Sheet
1.59% of book · Avg. cost $84.30 · Return +92.11%

Core Thesis

Fortinet is a cybersecurity platform vendor covering network security, cloud security, zero-trust access, and SecOps, serving more than 800,000 customers with revenue weighted toward recurring subscription and support contracts — a large installed base it's...

Financial Metrics

  • Market Cap$114.48B
  • P/E (TTM)61.62
  • EPS (TTM)$2.58
  • Div. Yield0.00%
  • Price$156.25

Bear Case

Growth in new hardware/appliance sales slows and drags the subscription pipeline down with a lag, competition from cloud-native security vendors intensifies, and at a 52-week high the stock has less cushion to absorb a disappointing quarter.

Investment Thesis

The Thesis
Fortinet is a cybersecurity platform vendor covering network security, cloud security, zero-trust access, and SecOps, serving more than 800,000 customers with revenue weighted toward recurring subscription and support contracts — a large installed base it's converting into higher-margin recurring revenue.
The Catalyst
Fortinet's unified SASE/security-platform push keeps converting its large installed hardware base into higher-margin subscription and services revenue — the position is already up nearly 93% on cost and near its 52-week high on that trend continuing.
The Risk
Growth in new hardware/appliance sales could slow and drag the subscription pipeline down with a lag, and competition from cloud-native security vendors is intensifying just as the stock trades at a 52-week high with less cushion for a weak quarter.
The Connection
Core to my cybersecurity platform-consolidation theme alongside PANW and CRWD — the name most levered to the hardware-to-subscription transition specifically.

Pre-Mortem Thesis Invalidation Parameters

Codified in advance, before any of these have happened, so a future decision to hold or exit isn't rationalized in the moment. If a condition below is met, the thesis as written is invalidated and the position gets re-underwritten from scratch — not automatically sold, but automatically questioned.

Metric / EventAutomatic Review Trigger
Billings GrowthDecelerates below the company's own guided range for 2 consecutive quarters.
Subscription Revenue MixGrowth stalls as the hardware refresh cycle fails to convert into subscription attach.
Market cap$114.48B
P/E ratio (TTM)61.62
EPS (TTM)$2.58
Dividend yield0.00%
Shares outstandingN/A — not provided
SectorComputer Peripheral Equipment (cybersecurity)
EBITDAEarnings Before Interest, Taxes, Depreciation, and Amortization — a measure of operating profitability before financing and accounting decisions. EV/EBITDA compares a company's full value (including debt) to this figure, often used to compare companies with different capital structures.EV/EBITDA 26.70–43.39x (sources vary)
PEG ratioPrice/Earnings-to-Growth: the P/E ratio divided by expected earnings growth. Below 1.0 is often read as cheap relative to growth; above suggests the market is pricing in a lot of future growth already. Different providers use different growth-rate assumptions, so figures vary by source.1.36
CapexNot cleanly disclosed in public data as of this writing

Market cap, P/E, EPS, and dividend yield via Blossom. Shares outstanding not available from a source I trust for this entry — left blank rather than estimated. EBITDA, PEG ratio, and capex sourced from public filings and financial-data aggregators (GuruFocus, StockAnalysis, company earnings releases). PEG ratio is sourced primarily from GuruFocus where available; different providers calculate PEG using different growth-rate assumptions, so figures from other sources for the same stock can vary by several multiples — a known limitation of PEG as a metric, not unique to any name here.

Valuation Logic

61.62x trailing earnings sits toward the middle of the book's cybersecurity cluster (PANW, CRWD); the multiple assumes continued margin expansion on top of already-record free cash flow, a real bar to clear each quarter.

DCF Sensitivity Tool

A simplified single-stage model for exploring how WACC and terminal growth assumptions move an implied share price — not AEA's own valuation of this stock. Adjust the base cash-flow figure to run your own numbers.

Implied Share Price
Formula: Base FCF/Share × (1 + terminal growth) ÷ (WACC − terminal growth). A real DCF would forecast several years of cash flow explicitly rather than capitalize a single base year in perpetuity — this tool is a simplified illustration of how sensitive that kind of valuation is to two assumptions, not a price target.
$70.12 (52-wk low)$156.25$159.80 (52-wk high)

About the business

Fortinet is a cybersecurity platform vendor covering network security, cloud security, zero-trust access, and security operations, serving more than 800,000 customers with revenue weighted toward subscription and support contracts rather than one-time hardware sales.

Why I own it

This sits alongside PANW as my second direct cybersecurity holding — a different competitive angle on the same durable "security budgets don't get cut" theme, with a large installed base of appliances that generates recurring subscription and support revenue. It's up nearly 93% on cost and trading right near its 52-week high.

Risk/Reward Profile

Bull CaseBear Case
Fortinet keeps converting its large installed hardware base into higher-margin subscription and services revenue, its unified SASE/security-platform push keeps winning share, and recurring revenue mix keeps improving overall margins.Growth in new hardware/appliance sales slows and drags the subscription pipeline down with a lag, competition from cloud-native security vendors intensifies, and at a 52-week high the stock has less cushion to absorb a disappointing quarter.

Base case: Fortinet keeps growing steadily as security budgets hold up and its subscription mix slowly improves, and the stock's return tracks that earnings growth from here rather than further re-rating.

Download this position's data

Fundamentals, scenario matrix, and risk/reward table — exported exactly as published on this page, no reformatting.

Macro Stress-Test: How FTNT Fits In

The book-level stress test runs four scenarios against the whole portfolio. Here is exactly where FTNT sits in each one — named directly, or not addressed at all. Nothing below is invented for this page; it’s the same book-level analysis, filtered to this position.

Current positioning, no shock assumed

FTNT is 1.46% of the book, in the Software & Cybersecurity sector. See the full base-case positioning on Holdings.

Where this position sits in the book’s least-defended scenario

Not individually named in the book-level inflation analysis. FTNT contributes to the book’s overall growth-multiple exposure only through its Software & Cybersecurity sector weight — see the full scenario on Holdings for what is and isn’t defended.

Not individually assessed

Where this position sits in the book’s best-defended scenario

FTNT is a liquid, publicly traded security like every other position in the book — no private equity, no illiquid credit, no lockups. A genuinely broad market drawdown would still hurt (the book’s beta is 1.79), but this position doesn’t face the structural exit friction an illiquid holding would.

Liquid, publicly traded

Where this position sits in the book’s largest concentrated risk

Not part of the semiconductor sleeve this scenario is built around. FTNT sits in Software & Cybersecurity, so a Taiwan-centered supply disruption would hit this position only indirectly, if at all, through broader market effects.

Outside the named semiconductor exposure