https://www.rupeecase.com/blog/ Short, data-backed lessons on systematic investing, factor models, portfolio theory, and the real cost of mutual funds and PMS. By Tanmay Kurtkoti. en-in Mon, 03 Aug 2026 08:00:00 +0530 https://www.rupeecase.com/blog/2026-08-03-morning-ten-days-that-mattered/ https://www.rupeecase.com/blog/2026-08-03-morning-ten-days-that-mattered/ Mon, 03 Aug 2026 08:00:00 +0530 Saturday morning I am staring at a WhatsApp forward in the family group. Systematic Investing https://www.rupeecase.com/blog/2026-08-03-evening-sort-by-return/ https://www.rupeecase.com/blog/2026-08-03-evening-sort-by-return/ Mon, 03 Aug 2026 08:00:00 +0530 Friend forwarded a screenshot last week. Sixteen systematic strategies on a marketplace page, sorted by five-year CAGR, highest first. Systematic Investing https://www.rupeecase.com/blog/2026-07-31-morning-stock-split-illusion/ https://www.rupeecase.com/blog/2026-07-31-morning-stock-split-illusion/ Fri, 31 Jul 2026 08:00:00 +0530 Last Thursday a cousin forwarded a screenshot to the family group. The board of a mid-cap company had approved a 1:1 stock split. Systematic Investing https://www.rupeecase.com/blog/2026-07-31-evening-volatility-tax/ https://www.rupeecase.com/blog/2026-07-31-evening-volatility-tax/ Fri, 31 Jul 2026 08:00:00 +0530 Saturday morning a friend forwarded his mutual fund statement. Two funds, same category, same five-year window, roughly the same average annual return. Portfolio Theory https://www.rupeecase.com/blog/2026-07-30-morning-flat-sip-shrinks/ https://www.rupeecase.com/blog/2026-07-30-morning-flat-sip-shrinks/ Thu, 30 Jul 2026 08:00:00 +0530 Saturday morning a friend pinged me a screenshot. His SIP summary. Five years running, Rs 10,000 a month, not a single miss. Systematic Investing https://www.rupeecase.com/blog/2026-07-30-evening-confirmation-bias/ https://www.rupeecase.com/blog/2026-07-30-evening-confirmation-bias/ Thu, 30 Jul 2026 08:00:00 +0530 Last Thursday a friend sent me his watchlist notes on a stock he has held for fourteen months. Systematic Investing https://www.rupeecase.com/blog/2026-07-29-morning-three-year-number/ https://www.rupeecase.com/blog/2026-07-29-morning-three-year-number/ Wed, 29 Jul 2026 08:00:00 +0530 Last Tuesday a friend forwarded me two factsheets of the same fund. Same scheme name. Systematic Investing https://www.rupeecase.com/blog/2026-07-29-evening-on-ramp-not-destination/ https://www.rupeecase.com/blog/2026-07-29-evening-on-ramp-not-destination/ Wed, 29 Jul 2026 08:00:00 +0530 Saturday morning a friend forwarded me his first RupeeCase screenshot. Systematic Investing https://www.rupeecase.com/blog/2026-07-28-morning-dividend-yield-factor/ https://www.rupeecase.com/blog/2026-07-28-morning-dividend-yield-factor/ Tue, 28 Jul 2026 08:00:00 +0530 Saturday morning a cousin forwards me a screener. Thirty stocks sorted by dividend yield, highest first, with a caption that said \"passive income portfolio Systematic Investing https://www.rupeecase.com/blog/2026-07-28-evening-shallow-fall-compounds/ https://www.rupeecase.com/blog/2026-07-28-evening-shallow-fall-compounds/ Tue, 28 Jul 2026 08:00:00 +0530 Sunday evening my father pulls up a comparison table on his phone. Eleven strategies side by side, sorted by five year CAGR, highest first. Systematic Investing https://www.rupeecase.com/blog/2026-07-27-morning-sequence-of-returns/ https://www.rupeecase.com/blog/2026-07-27-morning-sequence-of-returns/ Mon, 27 Jul 2026 08:00:00 +0530 Past eleven at night my phone lights up. A friend, four weeks into the first SIP he has ever set up, has watched the market slide a few percent and he is s Portfolio Theory https://www.rupeecase.com/blog/2026-07-27-evening-disposition-effect/ https://www.rupeecase.com/blog/2026-07-27-evening-disposition-effect/ Mon, 27 Jul 2026 08:00:00 +0530 Saturday afternoon. Cousin sends a screenshot of his portfolio app. Two positions side by side. Market Mechanics + Behavioural https://www.rupeecase.com/blog/2026-07-26-morning-buyback-illusion/ https://www.rupeecase.com/blog/2026-07-26-morning-buyback-illusion/ Sun, 26 Jul 2026 08:00:00 +0530 Saturday morning, second coffee, and a cousin drops a screenshot into the family group with two words sitting on top of it. Corporate Finance https://www.rupeecase.com/blog/2026-07-26-evening-tax-loss-harvest/ https://www.rupeecase.com/blog/2026-07-26-evening-tax-loss-harvest/ Sun, 26 Jul 2026 08:00:00 +0530 A friend pinged me last week with a screenshot and a grin I could hear through the text. Personal Finance https://www.rupeecase.com/blog/2026-07-24-morning-low-vol-anomaly/ https://www.rupeecase.com/blog/2026-07-24-morning-low-vol-anomaly/ Fri, 24 Jul 2026 08:00:00 +0530 A cousin, twenty six, corners me at a family lunch with his phone already out. Factor Models https://www.rupeecase.com/blog/2026-07-24-evening-mix-beats-the-pick/ https://www.rupeecase.com/blog/2026-07-24-evening-mix-beats-the-pick/ Fri, 24 Jul 2026 08:00:00 +0530 My cousin had twelve browser tabs open on a Saturday afternoon, every one of them a fund comparison page, and he had been on the same decision for two hour Systematic Investing https://www.rupeecase.com/blog/2026-07-23-morning-sector-fund-concentration/ https://www.rupeecase.com/blog/2026-07-23-morning-sector-fund-concentration/ Thu, 23 Jul 2026 08:00:00 +0530 Saturday morning, and a friend I have known since college sends me two screenshots from his investing app. MF vs PMS vs RupeeCase https://www.rupeecase.com/blog/2026-07-23-evening-lump-sum-vs-drip/ https://www.rupeecase.com/blog/2026-07-23-evening-lump-sum-vs-drip/ Thu, 23 Jul 2026 08:00:00 +0530 A message landed on Tuesday afternoon. A friend had finally sold a small plot he'd been trying to offload for two years, and about Rs 12 lakh had hit his s Portfolio Theory https://www.rupeecase.com/blog/2026-07-22-evening-nominee-is-not-an-heir/ https://www.rupeecase.com/blog/2026-07-22-evening-nominee-is-not-an-heir/ Wed, 22 Jul 2026 08:00:00 +0530 A friend sent me a screenshot on Sunday. Nomination updated across every folio, green ticks all the way down, captioned \"estate planning done.\" He had told Systematic Investing https://www.rupeecase.com/blog/2026-07-21-morning-size-factor/ https://www.rupeecase.com/blog/2026-07-21-morning-size-factor/ Tue, 21 Jul 2026 08:00:00 +0530 Everyone hears the same line when they start out. Smaller companies pay you more, so go down the cap ladder for the bigger number. Systematic Investing https://www.rupeecase.com/blog/2026-07-21-morning-overlap-cap/ https://www.rupeecase.com/blog/2026-07-21-morning-overlap-cap/ Tue, 21 Jul 2026 08:00:00 +0530 Cousin showed me his app on Sunday. Five equity funds, five different names, and he felt spread out. Systematic Investing https://www.rupeecase.com/blog/2026-07-21-evening-who-sells-first/ https://www.rupeecase.com/blog/2026-07-21-evening-who-sells-first/ Tue, 21 Jul 2026 08:00:00 +0530 My cousin and his wife took the same risk questionnaire last year. He came out aggressive. Systematic Investing https://www.rupeecase.com/blog/2026-07-20-morning-turnover-tax/ https://www.rupeecase.com/blog/2026-07-20-morning-turnover-tax/ Mon, 20 Jul 2026 08:00:00 +0530 Pulled a factor study last week and did the boring thing. I read the footnote. Systematic Investing https://www.rupeecase.com/blog/2026-07-20-evening-midcap-drawdown/ https://www.rupeecase.com/blog/2026-07-20-evening-midcap-drawdown/ Mon, 20 Jul 2026 08:00:00 +0530 My cousin found one of our Midcap cards on Saturday. Forty one percent a year on a five year backtest. Strategy Spotlight https://www.rupeecase.com/blog/2026-07-19-morning-since-inception-trap/ https://www.rupeecase.com/blog/2026-07-19-morning-since-inception-trap/ Sun, 19 Jul 2026 08:00:00 +0530 A fund's ad flashed \"18.9% since inception\" at me last week. Right below it on the same screener sat a fifteen-year-old fund saying 13. Systematic Investing https://www.rupeecase.com/blog/2026-07-19-evening-two-sets-of-books/ https://www.rupeecase.com/blog/2026-07-19-evening-two-sets-of-books/ Sun, 19 Jul 2026 08:00:00 +0530 A friend pulled up a holding company last week, glanced at its profit, saw a small number sitting under a big market value, and decided it was overpriced. Systematic Investing https://www.rupeecase.com/blog/2026-07-18-morning-one-country-bet/ https://www.rupeecase.com/blog/2026-07-18-morning-one-country-bet/ Sat, 18 Jul 2026 08:00:00 +0530 In early 1989, Japan was 45 percent of the world's stock market. Bigger than America, which sat at 33. Systematic Investing https://www.rupeecase.com/blog/2026-07-18-morning-home-bias/ https://www.rupeecase.com/blog/2026-07-18-morning-home-bias/ Sat, 18 Jul 2026 08:00:00 +0530 Friend showed me his portfolio yesterday. Eight funds. Large cap, mid cap, small cap, a little gold on the side. Systematic Investing https://www.rupeecase.com/blog/2026-07-18-evening-tax-free-allowance/ https://www.rupeecase.com/blog/2026-07-18-evening-tax-free-allowance/ Sat, 18 Jul 2026 08:00:00 +0530 A friend told me he has never sold a single unit of his index fund in seven years. Systematic Investing https://www.rupeecase.com/blog/2026-07-17-morning-funds-that-vanished/ https://www.rupeecase.com/blog/2026-07-17-morning-funds-that-vanished/ Fri, 17 Jul 2026 08:00:00 +0530 Friend sorted his app by ten year returns on Tuesday and picked from the top of the list. Systematic Investing https://www.rupeecase.com/blog/2026-07-17-evening-worst-so-far/ https://www.rupeecase.com/blog/2026-07-17-evening-worst-so-far/ Fri, 17 Jul 2026 08:00:00 +0530 Cousin was scrolling our marketplace on Wednesday, hunting for the card with the shallowest drawdown. Systematic Investing https://www.rupeecase.com/blog/2026-07-17-evening-bonus-shares/ https://www.rupeecase.com/blog/2026-07-17-evening-bonus-shares/ Fri, 17 Jul 2026 08:00:00 +0530 Friend messaged this evening. A company he owns announced a 1:1 bonus, his 100 shares became 200 overnight, and he was pleased in the way you are pleased w Systematic Investing https://www.rupeecase.com/blog/2026-07-16-morning-goodwill-overpaid/ https://www.rupeecase.com/blog/2026-07-16-morning-goodwill-overpaid/ Thu, 16 Jul 2026 08:00:00 +0530 A friend forwarded me a results screenshot this morning, half worried. Systematic Investing https://www.rupeecase.com/blog/2026-07-16-evening-which-value/ https://www.rupeecase.com/blog/2026-07-16-evening-which-value/ Thu, 16 Jul 2026 08:00:00 +0530 Cousin had two funds open on the same tab last night. Both said value. Systematic Investing https://www.rupeecase.com/blog/2026-07-15-morning-room-rent-cap/ https://www.rupeecase.com/blog/2026-07-15-morning-room-rent-cap/ Wed, 15 Jul 2026 08:00:00 +0530 Friend forwarded me his health insurance claim settlement last week, half proud he was finally using the cover, half confused. Systematic Investing https://www.rupeecase.com/blog/2026-07-15-evening-one-profile-many-goals/ https://www.rupeecase.com/blog/2026-07-15-evening-one-profile-many-goals/ Wed, 15 Jul 2026 08:00:00 +0530 Cousin took a risk questionnaire on Sunday afternoon. It thought about him for a moment and gave one word back. Systematic Investing https://www.rupeecase.com/blog/2026-07-14-morning-multicap-flexicap/ https://www.rupeecase.com/blog/2026-07-14-morning-multicap-flexicap/ Tue, 14 Jul 2026 08:00:00 +0530 A cousin forwarded me two funds last week and asked which one to buy. Both were sitting under the same tab on his app. Systematic Investing https://www.rupeecase.com/blog/2026-07-14-evening-doubling-clock/ https://www.rupeecase.com/blog/2026-07-14-evening-doubling-clock/ Tue, 14 Jul 2026 08:00:00 +0530 A friend asked me over chai how long his money takes to double. Not what return he should chase. Systematic Investing https://www.rupeecase.com/blog/2026-07-13-morning-human-capital/ https://www.rupeecase.com/blog/2026-07-13-morning-human-capital/ Mon, 13 Jul 2026 08:00:00 +0530 A friend at a big IT services firm showed me his portfolio last week, pretty pleased with it. Systematic Investing https://www.rupeecase.com/blog/2026-07-13-morning-allocation-drift/ https://www.rupeecase.com/blog/2026-07-13-morning-allocation-drift/ Mon, 13 Jul 2026 08:00:00 +0530 A friend set up a tidy 60/40 three years ago. Equity for the growth, debt so he could sleep at night. Systematic Investing https://www.rupeecase.com/blog/2026-07-13-evening-gold-free-twin/ https://www.rupeecase.com/blog/2026-07-13-evening-gold-free-twin/ Mon, 13 Jul 2026 08:00:00 +0530 A friend was scrolling the RupeeCase shelf the other day and stopped on two strategies that looked like identical twins. Systematic Investing https://www.rupeecase.com/blog/2026-07-12-morning-asset-growth-factor/ https://www.rupeecase.com/blog/2026-07-12-morning-asset-growth-factor/ Sun, 12 Jul 2026 08:00:00 +0530 A friend was pitching me a stock last week, genuinely excited. They are doubling their factories, buying a smaller rival, raising fresh money to pay for al Systematic Investing https://www.rupeecase.com/blog/2026-07-12-evening-interest-coverage/ https://www.rupeecase.com/blog/2026-07-12-evening-interest-coverage/ Sun, 12 Jul 2026 08:00:00 +0530 A friend told me a company he owns is perfectly safe on its debt. It made a profit last year, he said, so it can clearly pay its loans. Systematic Investing https://www.rupeecase.com/blog/2026-07-11-morning-settlement-cycle/ https://www.rupeecase.com/blog/2026-07-11-morning-settlement-cycle/ Sat, 11 Jul 2026 08:00:00 +0530 A friend sold some shares on Monday morning to free up cash for a deposit. Market Mechanics + Behavioural https://www.rupeecase.com/blog/2026-07-11-morning-action-bias/ https://www.rupeecase.com/blog/2026-07-11-morning-action-bias/ Sat, 11 Jul 2026 08:00:00 +0530 Watched a penalty shootout with a friend who runs money for a living. Keeper guessed left, the ball rolled straight down the middle, net rippling in the ex Market Mechanics + Behavioural https://www.rupeecase.com/blog/2026-07-11-evening-risk-tolerance-is-a-mood/ https://www.rupeecase.com/blog/2026-07-11-evening-risk-tolerance-is-a-mood/ Sat, 11 Jul 2026 08:00:00 +0530 A friend filled out a risk questionnaire on a quiet Sunday afternoon. Twelve questions, a score, one word at the end. Systematic Investing https://www.rupeecase.com/blog/2026-07-10-morning-fifty-lakh-door/ https://www.rupeecase.com/blog/2026-07-10-morning-fifty-lakh-door/ Fri, 10 Jul 2026 08:00:00 +0530 Cousin pinged me over the weekend, half sold on a PMS his relationship manager had just pitched. Systematic Investing https://www.rupeecase.com/blog/2026-07-10-evening-minimum-due-trap/ https://www.rupeecase.com/blog/2026-07-10-evening-minimum-due-trap/ Fri, 10 Jul 2026 08:00:00 +0530 A friend told me over dinner that his credit card is under control. Never missed a due date in his life. Systematic Investing https://www.rupeecase.com/blog/2026-07-09-morning-pe-not-price/ https://www.rupeecase.com/blog/2026-07-09-morning-pe-not-price/ Thu, 09 Jul 2026 08:00:00 +0530 A friend showed me two stocks over coffee last week. Both trading at a price to earnings of 20. Systematic Investing https://www.rupeecase.com/blog/2026-07-09-evening-three-risks/ https://www.rupeecase.com/blog/2026-07-09-evening-three-risks/ Thu, 09 Jul 2026 08:00:00 +0530 A friend ran one of those risk questionnaires last week. Twelve questions, a score, a single word at the end. Systematic Investing