Morning 2 May 2026

``` Pulled the NIFTY 50 weights this morning. Wanted to test something.

The NIFTY 50 gets sold as a "diversified" basket of 50 stocks. Look at the weights and the math tells a different story.

HDFCBANK alone is 12.8 percent of the index. RELIANCE 9.4. ICICIBANK 8.1. By the time you add the next 7 names you've crossed 58 percent of every rupee. The remaining 40 stocks share what's left. Average position outside the top 10 works out to about 1 percent. Per-stock factsheets sit at https://rupeecase.com/stocks/

That isn't a 50 stock portfolio. That's 10 stocks plus 40 footnotes. And it isn't a bug in the NIFTY 50, it's the design.

Cap-weighting compounds the existing winners. Whichever stock went up most last year quietly bought more of itself in your fund. The index re-weights monthly to reflect market cap. Which is just a polite way of saying "buy more of what already won." A walk through this math sits inside /learn/ at https://rupeecase.com/learn/

The fix isn't to abandon the universe. The 50 NIFTY names are still the strongest 50 large caps in the country. The fix is changing the rule that picks which 10 you actually own and how much of each. Methodology open at https://rupeecase.com/strategies/methodology

Three questions I keep asking when I look at a portfolio.

What percent is in the top 10 names? Above 50 percent and you are concentrated, not diversified. You can match yours against ours at https://rupeecase.com/compare

Are you choosing the rule, or is the index calendar choosing for you? Cap-weight is a passive rule that runs on autopilot. Equal-weight, momentum, factor screens are rules you actually pick.

What is the average size of your smaller positions? Below 2 percent and those names are too small to matter on the upside, too small to teach you anything on the downside. The 28 question risk profile at https://rupeecase.com/risk-profile.html surfaces this.

If your "50 stock portfolio" is actually 10 stocks plus 40 footnotes, change the rule. Not the wrapper.

RupeeCase Nifty rotates 10 names by the rule, not the index calendar. Min Rs 24K. https://rupeecase.com/strategies/rupeecase-nifty ```