DIODES INC /DEL/ (DIOD): what the price requires

Generated: 2026-07-14 · Exported: 2026-07-16 · Source: https://boothcheck.com/report/DIOD

Headline

Field	Value
Ticker	DIOD
Company	DIODES INC /DEL/
Current price	$92.70/sh

What The Price Requires (Inversion)

The assumption today's price embeds, recovered by inverting the valuation.

Field	Value
Inversion basis	whole-company
Operating margin needed	19.9%
Operating margin (mid-cycle)	11.8%
Margin expansion implied	+8.1pp
Trailing margin (depressed year)	2.8%
Must persist for	10.0y
Multiple paid	21x mid-cycle operating income

The operating-margin requirement is derived from the framework's value band at year 12, a separately labeled basis from the headline growth/duration solve.

Solve inputs: computed at a 13% cost of capital; growth searched up to the 25% self-funding ceiling; each 1pp moves the implied horizon ~2 years.

Reconcile: at the x-ray's 9.3% required return this reads ~18.4%/yr; the models below use their own rates.

How unusual the bet is: elevated

Reference	Value
vs own history	+0.08σ
cohort percentile (of 177 peers)	38
sustained it ~10 years at this level	15%
implied end-window share	0%

Valuation X-Ray

Asset, earnings-power and peer-multiple models all land far below the price; ONLY the growth-DCF reaches it. The bet is durable compounding the static frames structurally cannot price (a moat/durability premium).

How the valuation models price the stock relative to the market price. Price/FV above 1.0 means the market pays more than that lens defends (expensive); at or below 1.0 the lens can defend the price.

Family	Median price/FV	Models	Reads
Asset	5.81x	4	expensive
Earnings	2.50x	5	expensive
Relative	1.56x	5	expensive
Growth	0.83x	3	justifies

Families that justify the price: Growth Families that call it expensive: Asset, Earnings, Relative

The models below discount at their own flat-beta convention rates (cost of equity 9.3%, WACC 9.1%); the inversion above states its own rate.

Per-Model Detail (n=17)

Model	Family	FV	Price/FV	Applicable	Methodology
DCF Perpetual Growth	Growth	$122.15	0.76x	yes	FCF base $0.2B, growth 16% (input: historical growth), terminal g 4.0%, WACC 9.1%, 6yr projection
DCF Exit Multiple	Growth	$111.22	0.83x	yes	Exit EV/EBITDA: 44.5x / 46.5x / 48.5x (bear / base = today's held flat / bull), 6yr
Relative Valuation	Relative	$59.33	1.56x	yes	P/E 30.4x (blended: static sector reference 22x + trailing (TTM) 50x), scenarios: 24.9x / 30.4x / 35.9x (bear / base = reference held flat / bull), EV/EBITDA 25.14x
Simple DDM	Growth	—	—	no	—
Two-Stage DDM	Growth	—	—	no	—
Simple Excess Return	Asset	$20.04	4.63x	yes	BV/sh $40.95, ROE (TTM) 4.5%, ke 9.3%
Two-Stage Excess Return	Asset	$13.27	6.99x	yes	5yr excess ROE then converge to ke=9.3%
Discounted Future Market Cap	Growth	$86.08	1.08x	yes	Rev $1.6B, growth 16% (input: historical growth; tapered), Terminal P/S: 2.3x / 2.7x / 3.2x (bear / base = today's held flat / bull, cap 12x)
Peter Lynch Fair Value	Relative	$22.20	4.18x	yes	EPS $1.85, growth 2% (input: historical EPS growth), PEG=25.00 (Overvalued)
Margin Trajectory	Growth	—	—	no	—
Earnings Power Value	Earnings	$40.97	2.26x	yes	Normalized EBIT (5y avg op income, one-time charges added back) $0.20B × (1−21%) / WACC 9.1% → EPV (no growth)
Residual Income	Asset	$11.78	7.87x	yes	BV $40.95 + 5yr PV of (ROE (TTM) 4.5% − Kₑ 9.3%) × BV; BV grows 2.9%/yr
Graham Number	Asset	$41.29	2.25x	yes	√(22.5 × EPS $1.85 × BVPS $40.95) — Graham's conservative floor
EV/EBITDA Relative	Relative	$36.43	2.54x	yes	EBITDA $0.09B × sector EV/EBITDA 16.0x
FCF Yield	Earnings	$37.05	2.50x	yes	FCF $128.7M / Kₑ 9.3% — zero-growth perpetuity
SBC-Adj FCF Yield	Earnings	$30.74	3.02x	yes	SBC-adj FCF $0.10B (FCF $0.13B − SBC $0.03B) capitalized at Kₑ
Ben Graham Formula	Earnings	$59.69	1.55x	yes	EPS $1.85 × (8.5 + 2×15.0%) × (4.4 / 5.3%)
ROIC-Justified P/B	Asset	$4.47	20.74x	yes	BV $40.95 × (ROIC 1.0% / WACC 9.1%) (excluded from median)
P/Sales Sector	Relative	$168.56	0.55x	yes	Revenue $1.56B × sector P/S 5.0x
PEG Fair Value	Relative	$69.38	1.34x	yes	EPS $1.85 × (PEG 1.5 × growth 25.0% (input: historical EPS growth)) → PE 37.5x
Earnings Yield	Earnings	$20.00	4.64x	yes	EPS $1.85 / required return 9.3% (Rf 4.3% + ERP 5.0%)
Funds From Operations Multiple	Relative	—	—	no	—
Clinical Phase NPV	Growth	—	—	no	—
Merton	Asset	—	—	no	—
V5 Mechanical	—	—	—	no	—

Solvency

Field	Value
Net cash	$378.8m
Net debt / NOPAT (after-tax)	-2.71x (net cash)
Net debt / operating income (pre-tax)	-2.14x (net cash)
Interest coverage	82.0x
Share count CAGR (dilution)	0.2%
Burning cash	no

Leverage and coverage are computed on normalized mid-cycle operating income (mid-cycle margin 11.8%); the trailing year was depressed.

Bullet Takeaways

• Diodes makes the unglamorous building-block chips, discrete, analog, logic, and mixed-signal parts, that go into nearly every electronic device, and it is climbing out of a semiconductor downturn with five straight quarters of double-digit revenue growth.
• The most counterintuitive number is the trailing margin: at about 3.5% operating margin the company looks barely profitable, but that is a cycle trough, and the recovery toward its mid-cycle margins is the whole investment case.
• Watch the automotive and industrial mix and the 2028 plan: those higher-content markets reached 44% of product revenue, and management targets $2 billion of revenue and a gross margin of at least 35% by 2028.

Bull Case

The surprising fact at the center of Diodes is that the company looks barely profitable, with a trailing operating margin around 3.5%, yet it is one of the better-positioned names in its corner of semiconductors. The explanation is the cycle: that thin margin is a trough figure, dragged down by a demand downturn that pushed gross margin from 39.6% to 33.2% as "the overall reduction in end-market demand driving our overall revenue down" left fixed costs spread over fewer sales. Diodes is a high-fixed-cost manufacturer, so when revenue falls, margins collapse, and when revenue recovers, margins snap back hard. The bull case is that the trough is behind it.

The recovery is already visible in the numbers. Revenue grew 22% year over year in the most recent quarter to $405.5 million, the fifth consecutive quarter of double-digit top-line growth, and the company guided the next quarter higher still. More important than the headline is the mix: automotive and industrial markets, which carry more content and higher margins, reached 44% of product revenue. As cars and factories electrify, each one needs more of the power-management and signal chips Diodes makes, a secular content tailwind layered on top of the cyclical recovery. The company's edge in this fragmented market is its customer intimacy, which the 10-K describes as "deep customer relationships" that "created a key competitive advantage for us in the highly fragmented discrete, logic, analog, and mixed-signal semiconductor marketplace."

The balance sheet makes the recovery a low-risk bet to wait on. Diodes carries net cash of about $379 million and effectively no debt, with interest covered more than sixty times over, so it can fund its capacity and product roadmap internally and never faces a financing squeeze even in a downturn. Management has laid out a three-year plan targeting $2 billion of revenue and a gross margin of at least 35% by 2028, with non-GAAP earnings above $4.00 per share. That is the margin recovery the valuation is paying for, stated as a concrete target. The bull case is a debt-free, cyclically-depressed chipmaker with a secular automotive and industrial tailwind, recovering off a trough toward materially higher margins.

Bear Case

The bear case is the cycle that the bull is counting on, viewed from the other side. Semiconductors are brutally cyclical, and the recovery that looks like a clean upswing today can reverse without warning. Diodes says so itself: "Downturns in the highly cyclical semiconductor industry or changes in end-market demand could adversely affect our operating results and financial condition." The five-quarter growth streak is real, but it is a recovery off a deep trough, and the price is not paying for a recovery; it is paying for a sustained, decade-long expansion to materially higher margins. Buying a cyclical when earnings are depressed can be smart, but only if the multiple is cheap on normalized earnings, and here the multiple is full even on the company's own mid-cycle margins.

The arithmetic of the price makes the demand the central risk. On normalized, through-the-cycle margins, the price works out to about 28 times operating income and implies the company grows at its self-funding ceiling for roughly 14 years, a persistence only about 15% of comparable fast-growers have achieved. Even crediting the 2028 margin target, the price assumes that elevated margin then holds for a decade more. The order book offers no protection: Diodes notes that "all of our customer orders are subject to cancellation or modification, usually with no penalty to the customer." A backlog that can be cancelled freely is not a backlog in any durable sense, and in a downturn customers cancel first and apologize later, which is precisely how the last trough formed.

The competitive and concentration pressures sit underneath. Diodes competes in a fragmented market against larger analog and power-semiconductor companies with more scale and broader catalogs, and its products are commodity building blocks where pricing power is limited and price erosion is constant. The automotive and industrial content story is genuine, but those same markets are themselves cyclical, and automotive demand has its own slowdown risk. The balance sheet is a fortress, so there is no solvency concern, and the asset value provides a floor. The bear is not that Diodes is a poor business; it is well-run and well-financed. The bear is that the valuation methods already say it: every backward-looking lens reads the stock as expensive, and only the most optimistic growth method reaches the price, which means the buyer is paying a premium for a cyclical recovery to not only complete but compound for years, with a freely cancellable order book and a self-correcting industry as the risks.

Valuation

Valuing Diodes on trailing earnings is meaningless, because trailing earnings are a cycle trough, and the framework handles that correctly by reading the price against the company's own through-the-cycle margins rather than the depressed quarter. On that normalized basis, the price works out to about 28 times mid-cycle operating income and implies growth held at the self-funding ceiling for roughly 14 years. That is the bet: not just a recovery, but more than a decade of compounding on margins that have recovered to mid-cycle and beyond. The trailing operating margin near 3.5% versus a normalized 11.8% shows how far below the through-cycle level the current quarter sits, and the recovery toward the company's 35%-plus gross-margin target by 2028 is what the price is underwriting.

The methods we use to triangulate are lopsided, and the pattern names the bet. The asset lens, the normalized earnings-power lens, and the peer-multiple lens all read the stock as expensive, several at multiples of the price, because they value either the asset base or the normalized earnings rather than an extrapolated recovery. Only the growth-based discounted cash-flow method reaches the price. Read honestly, that is a durability premium on a cyclical: the static methods cannot price a chipmaker mid-recovery, so the market is paying forward for the upcycle and the margin expansion to land and persist. The spread between the conservative methods and the price is the entire premium, and it rests on the 2028 plan being delivered and then sustained.

Solvency is a clear strength and changes the risk profile entirely. Diodes holds about $379 million of net cash and essentially no debt, with interest covered more than sixty times, so a renewed downturn would dent earnings but never threaten the company; it could fund its roadmap straight through a trough. The share count is roughly flat, so there is no dilution eroding the per-share economics. The downside is bounded by the fortress balance sheet and the real manufacturing asset base, not by zero. What the strong balance sheet does not do is justify the multiple. The buyer at this price is paying a premium on normalized earnings for a cyclical recovery to compound for a decade-plus, with the balance sheet as the consolation if the recovery stalls and the conservative methods, which already say expensive, as the marker of how far the price sits above demonstrated economics.

Catalysts

Diodes' first quarter of 2026 confirmed the recovery is broadening. Revenue rose 22% year over year to $405.5 million, beating estimates and marking the fifth consecutive quarter of double-digit top-line growth, while non-GAAP adjusted EPS of $0.43 outpaced the roughly $0.35 consensus. The growth was led by automotive and industrial markets, which reached 44% of product revenue and carry higher margins, with AI-server-related demand adding to the mix. Those higher-content markets are exactly the ones the company wants to grow, so the mix shift is as important as the headline.

The guidance pointed further up. For the second quarter, Diodes expects revenue of approximately $435 million, plus or minus 3%, and non-GAAP adjusted EPS of about $0.60, plus or minus $0.10, a meaningful sequential step that reflects the operating leverage of a recovering, high-fixed-cost manufacturer. Those are company-defined non-GAAP figures that exclude certain items; the GAAP earnings remain lower as the margin recovery is still early.

The longer-term framework is the catalyst the valuation hangs on. Management has articulated 2028 targets of $2 billion in annual revenue, $700 million in gross profit, a gross margin of at least 35%, and non-GAAP EPS above $4.00. The data points to watch are whether revenue growth holds its double-digit pace as the recovery matures, whether automotive and industrial content keeps lifting the mix toward those margin targets, and any sign of order cancellations that would signal the cycle rolling back over. Continued progress toward the 2028 plan is what justifies the premium; a renewed semiconductor downturn, which the industry delivers periodically, is the bear's catalyst.

Peer Cohorts (Per Segment, With Filing Citations)

Standard semiconductor products (single segment) (reported)

• MPWR (MONOLITHIC POWER SYSTEMS INC)
• (no filing in the citation store)
• ALGM (ALLEGRO MICROSYSTEMS, INC.)
• (no filing in the citation store)
• SMTC (SEMTECH CORP)
• (no filing in the citation store)
• ON (ON Semiconductor Corporation)
• (no filing in the citation store)
• MCHP (MICROCHIP TECHNOLOGY INCORPORATED)
• (no filing in the citation store)
• NXPI (NXP Semiconductors N.V.)
• (no filing in the citation store)
• POWI (POWER INTEGRATIONS, INC.)
• (no filing in the citation store)
• SLAB (SILICON LABORATORIES INC.)
• (no filing in the citation store)

Methodology Note

• Priced-in inversion: the valuation is inverted on the current price to recover the operating-income growth, duration, and steady-state margin the price embeds (ROE for financials, FFO growth for REITs).
• Valuation x-ray: the valuation models, grouped into four families (asset, earnings, relative, growth). Each model is expressed as a price/FV ratio (distance from price), not a point fair-value estimate. The spread across families is the disagreement.
• Solvency: net cash/debt, net-debt-to-NOPAT, interest coverage, and share-count CAGR from EDGAR financials (net debt / FFO and fixed-charge coverage for REITs; regulatory-capital framing for financials).
• Peer cohorts: per-segment comparables with deep-linkable SEC filing citations.

Fundamentals sourced from SEC EDGAR filings. Current price from Databento. The priced-in inversion and valuation x-ray are computed by the boothcheck engine; narrative composed by AI from the structured data.

Sources

Q1 2026 results, May 2026 · Q1 2026 results and outlook · Q1 2026 outlook · Q1 2026 guidance