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NTT INC

Company Overview

NTT, Inc. is Japan’s former telecom monopoly and still one of the country’s most important infrastructure owners. It controls NTT DOCOMO in mobile, NTT East and NTT West in domestic fixed-line and fiber access, NTT DATA in enterprise IT and data centers, and a growing finance ecosystem around payments, cards, securities, and banking. For a reader new to the name, the right mental model is: part utility, part mobile operator, part enterprise IT services group.

Data freshness. The latest clean official annual base is the audited year ended March 31, 2025. More recent data is partial, delayed, unaudited, or estimated. In NTT’s case, the more recent full-year numbers for the year ended March 31, 2026 come from the May 8, 2026 earnings release; they are company-reported but unaudited, and the securities report was scheduled for June 16, 2026. Those newer figures are also affected by two major events: the squeeze-out of NTT DATA minorities and the consolidation of SBI Sumishin Net Bank. That matters because it makes leverage, equity ratio, and cash-flow comparisons noisier than usual.

Economics.

Growth. On the clean audited base, revenue compounded at about 2.9% from the year ended March 2020 to the year ended March 2025. Net income compounded at about 3.2%, while adjusted EPS compounded at about 5.3%, helped by buybacks. The actual growth drivers have not been consumer mobile pricing. They have been NTT DATA and global solutions, plus DOCOMO’s smart-life, finance, and enterprise activities.

Owner earnings sanity check. A Buffett-style cash view is more useful here than raw P/E because NTT is capital-intensive.

At the current market cap, that rough owner-earnings estimate implies a yield of about 7.8%. That is somewhat worse than the simple earnings yield implied by the P/E because NTT’s real cash reinvestment needs run above accounting depreciation.

Capital efficiency. ROE has mostly lived in a roughly 10% to 14% range. The more useful ROIC lens is management’s ex-finance-business measure, which was about 5.4% in the year ended March 2026 and is guided to about 5.0% for the year ending March 2027. That is acceptable for a large infrastructure franchise, but it is not the profile of a high-return compounder. Incremental capital is earning mixed returns: poor in consumer mobile, better in enterprise, smart life, and selected data-center projects.

Business quality. Where profits actually come from still matters more than the AI narrative. NTT remains a good business because it owns hard-to-replicate assets: spectrum, nationwide fiber and local access infrastructure, rights-of-way, enterprise relationships, billing and customer-service scale, and a trusted position in essential communications. But it is better described as a durable franchise than as a high-return compounding machine. Regulation, political scrutiny, and heavy capital intensity cap how good it can be.

How the Company Makes Money

NTT has four economic engines. Integrated ICT is the largest and includes DOCOMO’s consumer mobile business, smart-life and finance, and enterprise services. Regional Communications is the fixed-network and fiber access business at NTT East and NTT West. Global Solutions is mostly NTT DATA: consulting, systems integration, managed services, and data centers. “Others” is mainly real estate and energy.

The Mar-2025 figures above are audited. The Mar-2026 figures are from the company earnings release and are unaudited. The key point is that the real profit center is still domestic telecom and DOCOMO-related activity, not the newer “future” businesses.

The more revealing, newer picture comes from DOCOMO’s internal management breakdown for the year ended March 2026, which is also unaudited. Consumer communications operating profit was about ¥305 billion, smart life was about ¥303 billion, and enterprise was about ¥335 billion. That tells you two things at once. First, NTT is broadening beyond pure mobile. Second, the broadening is happening partly because consumer mobile has gotten materially weaker.

Historically, NTT’s money machine was simple: essential network infrastructure produced steady cash flow, DOCOMO monetized a massive subscriber base, and the fixed businesses required high capex but low existential risk. The company is now trying to shift that cash engine toward a more diversified mix: data centers, enterprise systems, finance, payments, and AI-adjacent infrastructure. The market is debating whether that shift is value creation or merely a way to cover up a maturing mobile core.

Why the Stock Fell

This has been a slow de-rating, not a crash. At ¥149.5 on 29 May 2026, the stock sat about 1% above its 52-week low of ¥148 and roughly 11% below its 52-week high of ¥167.2. The decisive blow to sentiment came after the 8 May 2026 results. Management pushed out its ¥4 trillion EBITDA target by three years, guided to only flat operating profit for the year ending March 2027, and guided to a 5.5% drop in net income. Investors then looked through the headline revenue growth and focused on the real issue: DOCOMO’s consumer mobile profit pool is weaker than it used to be, while leverage and capital commitments are rising. A buyback and another dividend increase helped, but they did not change the diagnosis.

What the Market Is Assuming

(a) One-time / cyclical / sentiment-driven factors

• The May 2026 results reset expectations downward.
• Headline growth looked better than underlying earnings quality.
• Global Solutions profit was helped by a data-center asset sale gain.
• Cash flow and leverage looked worse because of deal-related perimeter changes.

(b) Medium-term business headwinds

• DOCOMO consumer communications is losing margin even without a collapse in subscribers.
• Retention spending and price competition are eating mobile profitability.
• Interest expense is rising faster than operating profit.
• Capex remains heavy across network quality, fiber, data centers, and AI infrastructure.

(c) Potential long-term structural threats

• The old Japanese mobile pricing umbrella may not come back.
• Hyperscalers may cap returns in data centers and enterprise AI infrastructure.
• Legacy copper and fixed-voice revenues will keep shrinking.
• Government ownership and future NTT-law changes could create policy friction or stock overhang.

Reality check vs. market narrative.

Temporary or Structural?

At the company level, this is not mainly an essence problem. At the segment level, there is one real structural problem: the DOCOMO consumer mobile business no longer earns the kind of margins investors once treated as normal. That matters because it used to be the cleanest cash generator in the group.

• DOCOMO consumer-mobile margin reset — classification: (b) Real structural but survivable. The damaged mechanism is monetization of the handset subscriber base. Consumer communications operating profit fell from ¥471 billion to ¥305 billion, margin from 14.0% to 9.3%, and ROIC from 7.8% to 4.9%. This does damage a core value-creation mechanism. It does weaken the moat, but not in an irreversible franchise-destroying way: spectrum, brand, billing, distribution, and network assets remain. What is unlikely to return within three years is the old level of pricing power.
• Legacy fixed-voice and copper decline — classification: (b) Real structural but survivable. The damaged mechanism is legacy voice monetization on copper infrastructure. Those revenues will not come back. But this is a structural decline in a product, not in NTT’s overall access moat. The group owns the migration path to fiber and wireless alternatives. Time will not heal copper demand, but capital and execution can keep it from becoming essence-level damage.
• Data-center and AI capital may earn mediocre returns — classification: (c) Not truly structural, at least not yet. The threatened mechanism is return on incremental capital, not customer captivity. This is reversible within three years because capital allocation can be slowed, projects can be repriced, and asset-light structures like REIT recycling can continue. The risk is real, but it has not yet proven that NTT’s growth investments are permanently value destructive.
• Government ownership and NTT-law uncertainty — classification: (c) Not truly structural. The damaged mechanism here would be valuation and capital-market perception, not operating earnings power. Government ownership remains large, and future legal change could create an overhang. But that does not break the customer base, the network, or the enterprise relationships.

The bottom line is straightforward. The structural damage is concentrated, not universal. The old DOCOMO cash machine is weaker. The broader NTT franchise is still intact.

Is the Market Wrong? By How Much?

Time-as-a-moat test.

• Within 2 years: No. Even with NTT’s current market cap in cash, you could not rebuild a competing nationwide fixed-plus-mobile-plus-enterprise platform. Spectrum, local access infrastructure, rights-of-way, and customer relationships make that impossible on this timeline.
• Within 5 years: You could build a serious challenger in pieces: an MVNO, a meaningful enterprise-IT business, or a data-center operator. You still could not recreate NTT East/West’s access network, DOCOMO’s distribution and billing base, or NTT’s role in critical communications resilience.
• Within 10 years: You could assemble substantial competing assets, especially in enterprise IT and data centers. You still would struggle to replicate the full stack: licensed spectrum, incumbent fiber and local-loop economics, municipal permissions, trust in essential-service delivery, and the embedded enterprise ecosystem.

What would still block you is not just capital. It is regulation, spectrum, network rights-of-way, installed base, trust, brand, field-service capability, and sheer operational scale. NTT’s moat is therefore still real. What has changed is that the moat now protects a lower-margin mobile business than before.

Valuation. This is a year-ended March 2025 audited valuation adjusted with the year-ended March 2026 earnings release and company guidance for the year ending March 2027. I use equity owner earnings rather than EV multiples. Because the bridge starts from after-interest, after-tax equity cash earnings, I do not add a separate net-debt adjustment below; leverage is reflected in the required equity yield.

This is an intrinsic-value range, not a price target. The market currently values the equity at about ¥12.2 trillion, which implies roughly a 7.8% owner-earnings yield on my base normalized cash earnings. I think a fair required yield is closer to 7.0%, not because NTT is a great compounder, but because it still owns infrastructure that is hard to replace and should remain cash generative even after the mobile margin reset. On that view, the market is undervaluing the company by roughly ¥1.4 trillion, or about ¥17 per share, in the base case. That is a moderate mispricing, not a dramatic one.

Key Facts, Estimates, and Judgments

Moat & mispricing score: 6/10. NTT still has a real moat. You cannot recreate its spectrum, access network, enterprise footprint, and trust in essential communications on any reasonable timeline. But the market is not hallucinating the problem: DOCOMO’s consumer communications profit pool has structurally weakened, and group incremental capital returns are only moderate. What the market is getting wrong is extrapolating that one profit pool’s margin reset into whole-company essence. At today’s price, the stock looks modestly cheap, not obviously mispriced by a mile.

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