Should Every NIFTY50 Stock Have Equal Weight? Which Has Performed Better: Equal-Weighted or Market-Cap-Weighted NIFTY 50?

Breaking the Benchmark Bias: Is Market-Cap Weighting Holding Back Your Portfolio Returns?

For years, retail investors and financial advisors have treated the traditional Nifty 50 index as the gold standard of Indian equity investing. Whenever we think of the stock market, we picture mega-cap giants dominating the index because of their massive market capitalization.

However, a deep quantitative analysis of Nifty 50 data from January 1, 2015, to August 31, 2026, reveals a startling financial secret: When you remove size bias and give every single stock an equal weight in the index, the Equal-Weight Nifty 50 frequently beats the traditional Market-Cap Weighted index.

This performance gap forces us to ask a critical question: If equal-weighting delivers better growth and resilience over time, why does the financial world stubbornly stick to the old market-cap weighting system?

Yearly Performance Breakdown: Return & Drawdown Highlights (2015–2026)

Since standard portal tables can sometimes be tricky to embed, here is a clean, structured bullet-point breakdown mapping out the Year-over-Year (YoY) percentage returns and maximum annual drawdowns for both the Market-Cap Weighted index and the Equal-Weight index:

2015

• Weighted Index: Return: -3.9% | Max Drawdown: -15.98%
• Equal-Weight Index: Return: -6.6% | Max Drawdown: -18.42%

2016

• Weighted Index: Return: +3.01% | Max Drawdown: -12.46%
• Equal-Weight Index: Return: +5.41% | Max Drawdown: -14.42%

2017

• Weighted Index: Return: +28.65% | Max Drawdown: -4.11%
• Equal-Weight Index: Return: +26.11% | Max Drawdown: -5.70%

2018

• Weighted Index: Return: +3.15% | Max Drawdown: -14.55%
• Equal-Weight Index: Return: -6.33% | Max Drawdown: -15.64%

2019

• Weighted Index: Return: +12.02% | Max Drawdown: -11.45%
• Equal-Weight Index: Return: +2.69% | Max Drawdown: -15.99%

2020 (COVID Crash)

• Weighted Index: Return: +14.90% | Max Drawdown: -38.44%
• Equal-Weight Index: Return: +17.62% | Max Drawdown: -37.93%

2021

• Weighted Index: Return: +24.12% | Max Drawdown: -10.08%
• Equal-Weight Index: Return: +32.60% | Max Drawdown: -11.22%

2022

• Weighted Index: Return: +4.33% | Max Drawdown: -16.47%
• Equal-Weight Index: Return: +6.36% | Max Drawdown: -16.10%

2023

• Weighted Index: Return: +20.03% | Max Drawdown: -7.06%
• Equal-Weight Index: Return: +29.78% | Max Drawdown: -7.62%

2024

• Weighted Index: Return: +8.80% | Max Drawdown: -10.93%
• Equal-Weight Index: Return: +9.73% | Max Drawdown: -13.64%

2025

• Weighted Index: Return: +10.51% | Max Drawdown: -8.71%
• Equal-Weight Index: Return: +13.54% | Max Drawdown: -8.54%

2026 (YTD up to August)

• Weighted Index: Return: -7.84% | Max Drawdown: -15.18%
• Equal-Weight Index: Return: -1.05% | Max Drawdown: -12.45%

Cracking the Code: The Flaw in Market-Cap Weighting

Looking at the yearly performance data above, a clear pattern emerges. In strong bull and recovery years like 2021 (+32.60% vs +24.12%), 2023 (+29.78% vs +20.03%), and 2025 (+13.54% vs +10.51%), the Equal-Weight index pulls ahead significantly.

Why does this happen?

1. The Trap of Size Bias: Traditional market-cap indexes reward a stock simply because its total market value has grown. As a company gets bigger, its weight in your portfolio increases. This forces passive funds to pump more money into stocks that are already expensive, creating a crowded trade.
2. Built-In Contrarian Rebalancing: Equal weighting acts as a natural stabilizer. Every time the index rebalances, it trims winners and buys undervalued laggards. This disciplined rotation captures growth across all market leaders rather than letting a handful of mega-caps drive the entire vehicle.
3. Surprising Risk Resilience: Critics often claim equal-weighting is too risky during crashes. Yet, during the 2020 COVID shock, the Equal-Weight drawdown (-37.93%) was actually milder than the Weighted index drawdown (-38.44%).

Turning Research into Results: The SanjeevResearch Model Portfolio

Understanding these historical data points is one thing, but putting them to work is where true investing edge is built. At SanjeevResearch, we took these exact empirical findings and applied them directly to our research models.

Our flagship Model Portfolio features up to 40 carefully selected stocks where each stock gets an equal capital allocation. By eliminating subjective size bias and concentration risk, our approach allows investors to capture broader market participation and smoother long-term compounding.

The Ultimate Question for Investors

If equal weighting offers superior compounding and avoids extreme concentration traps, why do institutional product creators and mutual funds still push market-cap-weighted products?

The answer usually boils down to liquidity and marketing convenience, not necessarily investor returns. Massive global pension funds need massive stock buckets to park trillions of dollars without moving stock prices. But for individual investors seeking true portfolio alpha, blindly following market-cap weighting might mean leaving serious money on the table.

What are your thoughts on index construction? Does your financial portfolio rely on mega-cap safety, or are you ready to explore equal-weight strategies through structured model portfolios?