The India Angle: Should You Own Lumentum from India?

The Optical Engine Powering the AI Era — Part 5 of 5

Part 1 — What Lumentum DoesPart 2 — The Financial StoryPart 3 — NVIDIA's $2B BetPart 4 — The ValuationPart 5 — The India Angle

We've spent four posts understanding a business. This one is about you.

Not the abstract "Indian investor" — but specifically someone reading this from Mumbai, Bengaluru, or Hyderabad, with a Zerodha account for Indian equities, possibly an INDmoney or Vested account for US stocks, an LRS limit of $250,000 per year, and a CA who will ask uncomfortable questions about Schedule FA in your next ITR filing.

The business case for Lumentum has been made in Parts 1 through 4. This post doesn't repeat it. What it does is translate everything into the practical decision framework that Indian investors need but almost never get — because most US stock analysis is written by Americans, for Americans, assuming USD income, USD taxes, and USD cost of capital.

You operate in rupees. Let's do this in rupees.

First: A Quick Primer on How Indian Investors Access US Stocks

There are three main routes, and they have meaningfully different implications.

Route 1: Direct LRS Investment via Platforms

The Reserve Bank of India's Liberalised Remittance Scheme allows Indian residents to remit up to $250,000 per financial year abroad — for investments, education, travel, or other permitted uses. Platforms like INDmoney, Vested Finance, and Winvesta are licensed under IFSCA (International Financial Services Centres Authority) to facilitate this.

The process: you transfer INR to the platform, they convert to USD and remit to a US brokerage account in your name (typically Drivewealth or a similar custodian), and you buy US stocks directly. Simple in theory — but with two friction points:

Route 2: Indian Mutual Funds / FOFs

Several AMCs (Mirae, ICICI Prudential, Franklin, Motilal Oswal) offer funds-of-funds or ETFs that invest in US equities. The advantages: no LRS, no foreign tax complexity, no Schedule FA, you invest in INR. The disadvantages: you don't get pure-play $LITE exposure (unless a specific US tech fund happens to hold it), and you pay an additional 1–2% in fund expenses on top of the underlying portfolio costs.

Route 3: GIFT City Depository Receipts

NSE IFSC in GIFT City (Gujarat) offers unsponsored depository receipts on select US stocks in INR, bypassing LRS entirely. Limited liquidity and limited stock coverage currently — Lumentum may not be available — but this is the direction the market is moving.

For this analysis, I'll assume you're using Route 1 — direct LRS investment — because it gives you actual $LITE exposure.

The Numbers That Actually Matter: From USD Return to INR in Pocket

This is the section most US-stock content aimed at Indian investors skips. Let me do it properly.

This chart maps the full journey from your gross USD return to the net INR that actually lands in your account after all frictions — remittance cost, TCS timing impact, and Indian capital gains tax. The key insight is the dramatic difference between LTCG (12.5% after 24 months) and STCG (30% slab rate) scenarios. The 24-month holding period is not a minor technicality — it determines whether you keep 86% or 74% of your gain.

Let me walk through the math on ₹10 lakh invested in $LITE today.

Entry:

Base case exit (consensus $1,105 target, holding 18 months):

Now the tax question — this is where it gets real.

Lumentum does not pay dividends, which removes the complexity of US withholding tax. Your gain is purely capital appreciation. That means:

If you hold less than 24 months (STCG):

US stocks are classified as "unlisted" securities under Indian tax law. Short-term gains (under 24 months) are added to your total income and taxed at your slab rate. For most HNIs and salaried professionals reading this, that's 30%.

On a ₹1,47,806 gain: tax of ₹44,342 → net return ₹1,03,464 → +10.3% post-tax return on ₹10L.

If you hold more than 24 months (LTCG):

Budget 2024 reduced LTCG on foreign equities from 20% to 12.5%, without indexation, after ₹1.25 lakh exemption.

On the same ₹1,47,806 gain (above exemption of ₹1.25L): taxable amount ₹22,806 × 12.5% = ₹2,851 tax → net return ₹1,44,955 → +14.5% post-tax return on ₹10L.

The difference: 4.2 percentage points purely from holding 6 more months.

For an HNI making multiple US stock investments, the 24-month discipline is one of the highest-return "decisions" they can make — it requires no skill, no market timing, just patience.

The Currency Amplifier: Why the Rupee's Decline Works in Your Favour

The left panel shows the USD/INR rate from ₹73 in January 2021 to ₹95 today — a 28.5% depreciation in five years, or roughly 5.1% annualised. The right panel shows two worked examples: how the currency added +140 percentage points to someone who bought $LITE at the 52-week low, and how it adds approximately 4–5% even for someone buying today.

This is the part of US investing that Indian investors most consistently underestimate.

When the rupee falls against the dollar, every dollar you hold becomes worth more rupees. If you invest ₹10 lakh in a US stock today at ₹95 per dollar, and the stock generates 0% USD return over a year but the rupee falls to ₹100, you've made a 5.3% gain in INR terms without the stock moving at all.

The INR has depreciated at roughly 5% per year for the last five years. This is not random noise — it's a structural feature of India's current account deficit, its import dependence (especially on oil), and the interest rate differential between India and the US.

The structural implications for a long-term Indian holder of US assets:

  1. You get paid twice. Once in USD stock appreciation. Once in INR depreciation.
  2. The longer you hold, the larger the currency contribution. A 5% annual rupee depreciation over 5 years adds ~28% to your gross USD returns in INR terms.
  3. The risk is currency appreciation. If the RBI intervenes aggressively (as they sometimes do) or if massive FII inflows strengthen the rupee, your USD gains shrink in INR terms. This is a real but historically infrequent risk.

One important practical point: Indian tax law requires you to compute capital gains using the SBI TT buying rate on the date of purchase and sale. Your actual forex rate and the SBI TT rate may differ slightly. Most platforms compute this automatically, but verify with your CA to ensure accuracy in your ITR.

Is There an Indian Alternative? The Honest Answer.

This is the question CII readers ask most often about any US stock deep dive, and it deserves a real answer — not a dismissive "there's no Indian equivalent."

This chart compares Lumentum against STL (Sterlite Technologies) and HFCL across eight dimensions — technology layer, moat, margins, pricing power, growth rate, global hyperscaler relationships, currency exposure, and 1-year stock returns. The picture that emerges is nuanced: STL and HFCL are excellent businesses benefiting from the same AI infrastructure wave, but they operate 2–3 value chain steps downstream from where Lumentum operates.

Let me give you the honest framework for choosing between them.

STL (Sterlite Technologies) makes optical fiber cable — the glass pipes that carry light across data centers and between cities. After the April 2025 demerger of its global services business, STL is a cleaner, more focused optical networking and manufacturing company. It won a ₹10,000 crore order from a global hyperscaler (widely reported to be Google or Microsoft). Its order book stands at ₹17,000+ crore. The stock has returned 544% over the past year.

HFCL makes optical fiber cable plus telecom equipment and data center interconnect solutions. Record order book of ₹21,200 crore, up 112% year-on-year. Has established itself as India's standout beneficiary of the AI data center buildout.

Both are legitimate businesses riding the same structural wave. Here's how I think about the choice:

Choose Lumentum if:

Choose STL or HFCL instead if:

The critical distinction that most content misses: STL and HFCL are in the fiber cable business. Lumentum is in the laser chip business. These are different technologies, different margins, different moats, and different competitive dynamics. A country can build an entire fiber cable industry — it's engineering-intensive but not IP-intensive. Building 200G EML chip capacity from scratch takes 5–7 years and hundreds of millions in capital even if you know what you're doing. The moats are categorically different.

Can you own both? Yes. A portfolio that holds Lumentum for the technology moat + STL for India-specific exposure without LRS friction is a coherent position — two different layers of the same infrastructure wave, across two geographies.

The LRS Mechanics: How to Actually Do This

Here's the practical checklist for buying $LITE as an Indian resident. Most finance content skips this. I won't.

Step 1: Choose your platform.

INDmoney and Vested Finance are the two most widely used. INDmoney files W-8BEN automatically (the form that reduces US withholding from 30% to 25% under the India-US DTAA — irrelevant for Lumentum since it pays no dividend, but good practice). Vested calculates INR gains automatically for ITR filing.

Step 2: Plan your LRS budget for the financial year.

The $250,000 annual limit is per individual. Note: this includes remittances for travel, education, and other purposes — not just investments. If you have children studying abroad or travel extensively, your investment headroom may be less than $250,000.

Step 3: Structure remittances to manage TCS.

Remittances above ₹10 lakh per financial year attract 20% TCS. If you're investing, say, ₹25 lakh in $LITE, structuring as three ₹8.33 lakh tranches across different months keeps you below the threshold and avoids TCS entirely. (Budget 2024 raised the threshold from ₹7L to ₹10L — an underappreciated improvement.)

Step 4: File W-8BEN.

This is the US tax form that declares you're a non-US person, capping withholding on US-source income at the DTAA rate. Your platform should file this automatically — confirm it.

Step 5: Maintain ITR discipline.

Every year, you must disclose foreign assets in Schedule FA of your ITR (typically ITR-2). You must report:

This is not optional. The Income Tax Department cross-references FATCA data received from US authorities. A CA who understands foreign asset reporting is essential.

Step 6: The 24-month discipline.

Commit before you buy: am I holding this for 2+ years or not? If not, the STCG tax makes the base case return barely better than a domestic equity return with no currency friction. If yes, the LTCG structure and currency tailwind make the investment compelling.

US Estate Tax — A Warning for Large Positions

This one surprises most Indian investors. If you hold more than $60,000 in US-situs assets (which includes US stocks) and you pass away, the US estate tax applies to those assets. The US estate tax for non-residents has a $60,000 exemption (far lower than the $13 million+ for US residents). Above that, rates go up to 40%.

For most retail investors with small US stock positions, this is academic. For HNIs with ₹50 lakh+ in US stocks, this needs estate planning attention. Options include investing through an Indian feeder fund (which holds the US stocks, so your Indian estate holds Indian fund units, not US situs assets directly) or through an offshore trust structure if the amounts are substantial. Discuss this with your CA.

Entry Strategy: Three Approaches for Three Types of Investors

Three clearly defined approaches: wait for correction (best math, requires patience and the possibility of never getting the dip), systematic SIP (most practical, smooths volatility, ensures LTCG eligibility), and full position today (highest conviction required, not recommended without deep research). Below that, the five quarterly monitorables that tell you whether the thesis is intact.

Let me give you my honest view on each.

Strategy A — Wait for Correction ($650–750 entry target): This is the most intellectually correct entry point. At $700, the bull case generates ~100% upside while the bear case generates ~25% downside — an asymmetric risk-reward that simply doesn't exist at $945. The problem: after a 1,076% move, a 25% correction sounds plausible but it may never come. If the Q4 FY2026 earnings report (expected August 2026) comes in at $1B+ revenue with OCS hitting $50M quarterly, the stock goes to $1,200, and $700 is never seen again. Setting a limit order and a price alert is the pragmatic implementation of this strategy.

Strategy B — Systematic SIP (most recommended): Six equal tranches across 12 months, approximately ₹1.5–2 lakh per tranche (keeping each below the ₹10L TCS threshold). This approach:

Strategy C — Full position today: Only justified if you have researched this business as thoroughly as this five-part series represents and have genuine 3-year conviction. This is a 3–5% of equity portfolio position maximum — not a 10%+ bet. The bear case drawdown potential of -50% on a 10% position is a -5% portfolio impact, which is meaningful but survivable. On a 20% position, the same drawdown is existential to your returns.

The Monitoring Dashboard: Five Questions Every Quarter

Print this out. Stick it next to every Lumentum earnings date.

Question 1: Did revenue beat the high end of guidance? Lumentum has beaten the top of its guidance range every quarter for six consecutive quarters. If this pattern breaks, the stock will react violently — but more importantly, you need to understand why it broke before deciding whether to hold.

Question 2: Where is OCS quarterly revenue tracking? The target is $100M/quarter by end CY2026. Progress toward this target tells you whether the second growth engine is firing on schedule. A $400M+ backlog converting to revenue is not guaranteed — fab ramp, yield, and delivery timelines all matter.

Question 3: Is non-GAAP gross margin holding above 40%? Any sustained compression below 40% signals either pricing pressure from competitive entry, product mix deterioration, or fab yield problems. Below 38%, the long-term margin thesis is under threat.

Question 4: What are hyperscalers saying about AI capex? Before Lumentum's earnings call, read the earnings transcripts of Google, Microsoft, Amazon, and Meta. If three of four signal AI capex deceleration, Lumentum's order book deterioration follows within one to two quarters. This is your leading indicator, not a lagging one.

Question 5: Any update on Greensboro fab timeline? The new North Carolina fabrication facility is central to the FY2028 revenue target. Any delay announcement, cost overrun, or yield qualification issue is a direct hit to the forward model. Management will mention fab progress in earnings calls — listen for it.

The Final Verdict: Putting It All Together

Five posts. One business. One decision.

Here is where I land — honestly, without the artificial certainty that financial content too often projects:

Lumentum ($LITE) is one of the highest-quality, most strategically positioned technology businesses I have analysed. The technology moat is real. The demand tailwinds are structural, not cyclical. The NVIDIA partnership is the strongest possible external validation. The management team is the right fit for this moment. The product roadmap — EML chips today, OCS scaling now, CPO emerging — gives the business three successive growth waves with staggered revenue timelines.

But the stock at $945 prices in most of this. The probability-weighted expected return from here is approximately 7% over 12 months — below what a simple Nifty 50 SIP delivers without currency friction or LRS complexity. The upside in the bull case is real and large. The downside in the bear case is also real and large.

For Indian investors specifically, the framework is:

If you believe in the 3-year AI infrastructure buildout story and have the patience to hold through volatility, Systematic Strategy B (SIP approach) with a 36-month minimum horizon is the most sensible entry. The currency tailwind amplifies your returns. The LTCG structure at 12.5% is materially better than most Indian equity short-term trading. The business quality is as high as anything available to Indian investors through the LRS route.

If you want optical infrastructure exposure without the LRS complexity, STL is the Indian alternative — not an equivalent (the technology moat is shallower, the margins are lower), but a legitimate beneficiary of the same structural wave, in rupees, on NSE.

If you're an HNI with a US stock portfolio already established through LRS, 3–5% allocation to $LITE makes sense as a satellite position in a diversified global equity portfolio. Not a core holding. Not a speculative bet. A considered, researched, sized allocation to one of the most important photonic infrastructure businesses in the world.

The single most important thing I want to leave you with: investing in US stocks from India is a skill, not just a transaction. The LRS mechanics, the tax structure, the currency dynamics, the monitoring discipline — these are the unglamorous parts that determine whether your investment thesis translates into actual wealth creation or just interesting reading material.

This series was the research foundation. The discipline is yours to build.

This has been the Lumentum deep dive series for Curious Investing Insights — all five parts.

If this series was useful, share Part 1 with someone who talks about AI stocks but has never heard the word "photonics." That person is exactly who this was written for.

Manu | Curious Investing Insights

Applying institutional analytical depth to markets that matter for Indian investors

This is not investment advice. Do your own research. The author may hold positions in securities discussed. All tax calculations are illustrative — consult a SEBI-registered investment advisor and a qualified CA for personalised advice on LRS, ITR reporting, and tax planning.

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Tags: Lumentum LITE · India US Investing · LRS Guide · LTCG Tax US Stocks · INR USD Currency · AI Infrastructure · Optical Networking · STL HFCL Comparison · Indian Investor US Stocks · Schedule FA ITR