For passive investors, the Nifty 50 vs Nifty Next 50 allocation is the most important decision.
The Indices
Nifty 50: Top 50 stocks (Reliance, TCS, HDFC Bank). Blue chips, stable, 12-13% CAGR. Nifty Next 50: Stocks 51-100. Tomorrow's blue chips, higher growth, 13-15% CAGR. See our [Nifty 50 vs Nifty Next 50 comparison](/compare/nifty-50-vs-nifty-next-50).
Allocation Strategies
Conservative: 80% Nifty 50 + 20% Nifty Next 50. Balanced: 60% Nifty 50 + 40% Nifty Next 50 (approximates Nifty 100). Aggressive: 40% Nifty 50 + 40% Nifty Next 50 + 20% Nifty Midcap 150.
Why Not Just Nifty 100?
Separate funds allow rebalancing. If Next 50 outperforms (grows to 50% of portfolio), you can trim and buy more Nifty 50 — systematically selling high and buying low.
Concentration Risk
Nifty 50: Top 5 stocks = 35-40% of index. Very concentrated. Nifty Next 50: More evenly distributed, less single-stock risk. Combining both reduces concentration.
SIP Approach
Set up two SIPs in the desired ratio. Example: ₹6,000 in Nifty 50 + ₹4,000 in Nifty Next 50 for a 60:40 split. Rebalance once a year. Use our [Step-up SIP Calculator](/calculators/step-up-sip-calculator) to plan annual increases.