Arm Holdings plc is a British semiconductor IP company owned by SoftBank Group (~90% pre-IPO, ~75%+ post-IPO as of 2026). Founded in 1990 as Advanced RISC Machines (a joint venture of Apple, Acorn Computers, and VLSI Technology), ARM designs CPU architecture blueprints and licenses them to semiconductor companies worldwide. ARM does not manufacture chips — it earns fees for the right to use its instruction set architecture (ISA) and design IP. The ARM architecture powers virtually every smartphone chip on the planet (Apple A-series, Qualcomm Snapdragon, MediaTek Dimensity), and is rapidly expanding into data centers, automotive, and AI accelerators.

ARM went public again on September 14, 2023 on the NASDAQ at $51/share (initial $54.5B valuation), closing at $63.59 on Day 1. By early 2024 the stock rallied to $164 before a pullback; as of March 2026, ARM trades at $117.63 — still at a premium valuation reflecting AI infrastructure tailwinds.

Revenue Model

End Market Mix

Business Dynamics: ARM earns royalties on every ARM-based chip shipped globally — approximately 30+ billion chips per year across all end markets. The royalty rate per chip is typically pennies to low tens of cents, but with 30B+ units shipped annually, the economics are powerful. ARM v9 architecture (the newest generation) commands royalty rates ~2× higher than v8 — as the installed base upgrades, royalty revenue should grow even without unit volume growth. The AI data center buildout is a major tailwind: hyperscalers (Amazon, Google, Microsoft) are developing custom ARM-based AI chips (AWS Graviton, Google Axion, Microsoft Cobalt) — every chip earns ARM a royalty. SoftBank's Masayoshi Son has signaled intent to develop "superintelligence" infrastructure using ARM IP, adding strategic optionality. The key risk: RISC-V is an open-source alternative that could gain share in commodity chip segments over time.

Green = >10% above current price. Red = >10% below. Gold = within ±10%.

Log-linear trend fitted to full price history. ±1.5σ bands. Green shaded zone = bottom 25% of historical range — historically attractive entry.

Bull Case — What Has to Be True: ARM v9 royalty rates (2× v8) drive total royalty revenue above $4B by FY2028; AI data center chips (custom ARM designs from hyperscalers) contribute 20%+ of royalties; automotive ARM cores proliferate in ADAS/EV platforms; SoftBank uses ARM as the centerpiece of a "superintelligence" infrastructure buildout that creates additional licensing revenue. At $210 bull PT, ARM trades at ~100x FY2026 EPS — extreme but arguably justified by the royalty model's terminal value. Bull DCF IV: $469.

Bear Case — Real Risks: RISC-V adoption accelerates in data center (Western Digital, SiFive gaining traction) and IoT segments — long-term moat erosion risk. Qualcomm v. ARM licensing dispute (ongoing as of 2026) could result in unfavorable terms. China revenue (represents ~25% of royalties) at risk from geopolitical decoupling — US-China restrictions on ARM licensing to Chinese companies. SoftBank overhang — 75% ownership means secondary offering risk. At $120 bear PT (near current), stock is already pricing in these risks. Bear DCF IV: $57 (reflects scenario where RISC-V displacement is severe).

Base Case Assumptions: Revenue grows ~24% in FY2026 (consensus) with FCFF growing ~40% via operating leverage (royalty model has near-zero marginal cost); FCF margin expands from 25% toward 35% by FY2030; WACC = 9.0% (premium IP franchise quality); net cash $3.08B provides cushion; no major RISC-V displacement in premium chip segments for 5+ years.

Verdict: At $117.63, ARM trades at 66.7x FY2026 consensus EPS — extreme by any absolute metric. Our DCF Base IV of $158 implies 34% upside from current levels, consistent with analyst consensus PT of $160.63. The current price already reflects considerable pessimism versus analyst targets. ARM is a genuinely exceptional business — 97%+ gross margins, recurring royalty model, AI tailwinds. The valuation risk is real but not as stretched as it appears given the terminal value of an IP monopoly. We rate ARM Hold — not a Buy at this price given the 66x P/E, but not a Sell either given the structural tailwinds. Add below $100 on any correction. Joseph holds 467 shares at $105.15 cost basis — in the money. Hold unless macro deteriorates.