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Concentrated Small-Cap Investor Case Study

Notes from a Groww Moneytalks interview with Shubham Sethi, a former Adobe and Amazon engineer who invests full-time in small caps. This is one person's opinion, not advice, and he holds 100% small caps with no diversification. Figures are as spoken (a portfolio of about ₹35 crore; the war-related drawdown he mentions suggests mid-2026), and several stock prices and years are approximate.

Journey and Goal Maths​

  • Started working at 21 targeting ₹100 crore; invested alone (no MF or PMS) and lost about 20-25% of savings in the first 3 years. Set a ₹5 crore quit target, saved aggressively in the US for about 4 years, left in 2019, and went to cash during Covid; ₹5 crore became about ₹10 crore by Dec 2020
  • Think in doublings: ₹5 crore to ₹100 crore is 20x, so he targets doubling every 3 years (about 24-25% CAGR by the Rule of 72), which needs holdings growing 40-50% a year with 20-25% of picks failing
  • Realistic expectations for most people: 15-20% CAGR is doable alongside a job, and effort rises sharply for each extra point of CAGR. Account for about 20% tax on gains; an FD gives about 7% (about 5.5% post-tax) and an MF about 12%, so a normal expectation is doubling in about 6 years. A ₹5,000 SIP will not reach ₹50 crore, and unrealistic goals push people into options and get-rich-quick schemes

Process​

  • Invest only in explosive growth (50-100%), which rarely lasts beyond 2-4 years, and require management, business and timing to align; exit when growth slows
  • Funda-techno "rocket" model: at entry, value exists but investor interest is missing, so use technicals to time it and take only a small position below the 200-day moving average, deploying big money only above it. In the middle phase, once up 30-40% from a breakout, ignore daily moves and let fundamentals play out. In the exit phase, when growth slows or valuation looks stretched, sell only when price breaks the 200 DMA to capture the final momentum leg
  • Lesson from Dixon Technologies: selling at about ₹2,000 on a PE of 100 purely on valuation missed a further run to several times that. Valuation-only selling cuts multibaggers short
  • Sizing: a normal position is 4-5% and dead-money stocks get 1-2%, never 8-10%; the biggest blunder is a large drawdown on a large allocation, and a 25% loss needs about 33-40% to recover
  • Hit rate: only about 10 stocks in 15-20 years changed his life, and he needs about ten bets to find one; most others are cut at +20-50% or -10-20%. Keep a trade journal written before the trade (why bought, trigger, when to sell)

Special Situations​

  • Demergers: index funds and large MFs are forced sellers of a small-cap spin-off. Aarti Pharma Labs, demerged from Aarti Industries, fell from about ₹330-340 (PE about 20) to about ₹220 (PE about 12) for a 25-30% grower, then reached about ₹600 within 6 months
  • Holding-company discount: Indian holding companies (Bajaj Holdings, Maharashtra Scooters, Inox Wind Energy) trade at 50-80% below asset value, and a merger or value-unlock announcement can close the gap
  • Policy reversal: Inox Wind and Suzlon rallied several-fold after wind tenders went back from open-envelope bidding (a race to the bottom) to closed-envelope bidding

Advice for Beginners​

  • If your package is ₹5-8 lakh, career growth (₹5 lakh to ₹50 lakh in 6-7 years) beats investing returns, so spend only about 5% of mental effort on an index fund or MF until the package passes ₹15-20 lakh, and 20-25% of your attention by the mid-30s
  • Asset-allocation rules such as 60-40 or 100 minus age are starting points; personality and risk tolerance decide, so use a risk-score questionnaire