There is a general assumption that the more debt you have in your portfolio, the poorer your returns will be — even if you reduce volatility. But when you look at the performance of top-performing Large Cap funds vs Aggressive Hybrid funds, the results are exactly the opposite. Aggressive Hybrid funds tend to give better returns than Large Cap funds, with lower volatility.
To remove the variability of fund managers' skills, we backtested two simple indices: Nifty 100 (benchmark for large cap funds) and a Hybrid index consisting of Nifty 500 and Nifty 5-Year Benchmark G-Sec, balanced annually. The analysis ran from **1st Jan 2003 to 31st Dec 2025 — 23 years of data**.
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Finding 1: The "Free Lunch" of Asset Allocation — The 80:20 Mix
One of the most surprising findings: the 80:20 aggressive hybrid fund generated the exact same IRR (**12.77%**) and final corpus (**~₹1.52 Crores**) as the Nifty 100 fund for a SIP investor, but with **23% less volatility** (16.22% vs 21.06%). By adding a 20% debt cushion with annual rebalancing, an investor can enjoy large-cap equity returns with significantly lower market swings.
Annual rebalancing forces the fund to trim equity after it has rallied and buy equity after it has fallen — a built-in "buy low, sell high" strategy without any effort to time the market.
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Finding 2: SIP Investors Have Even Less to Lose from Debt
For a lumpsum investor, pure equity delivers 5.85x the final value of pure debt. For a SIP investor, pure equity delivers only 2.21x the returns of pure debt. Rupee-cost averaging smooths out equity volatility's impact, meaning the incremental reward for being fully invested in equity is much smaller for SIP investors.
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Finding 3: Debt Does More Good Than Bad
As you increase the debt component, returns drop — but volatility drops much faster. Moving from 100% equity to 60% equity caused XIRR to drop from 16.06% to 13.97% (a 13% drop), while volatility dropped from 20.65% to 12.19% (a 41% drop in risk). Volatility falling faster than IRR leads to better risk-adjusted returns and builds a strong case for diversification.
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Finding 4: Conservative Hybrid Over Pure Debt
Adding the first 20% debt cuts volatility by ~4.4 percentage points. The last 20% (from 80% to 100% debt) only cuts it by ~1.7 percentage points. Hence, even for a conservative investor, a portfolio with 20% equity (like conservative hybrid funds) is recommended over 100% debt.
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Investor Suitability Matrix
| Profile | Recommended Allocation | Rationale |
|---|---|---|
| **Aggressive, long horizon (20+ yrs)** | 100% Nifty 500 | Highest final corpus for both lumpsum and SIP investor |
| **Growth-oriented, wants safety** | 80% Nifty 500 / 20% G-Sec | "Free lunch" — matches Nifty 100 return with lower drawdown risk |
| **Balanced / typical retail, 10–15 yr goal** | 60% Nifty 500 / 40% G-Sec | SIP IRR still ~12%, volatility down to 12.2% |
| **Approaching retirement (5–10 yrs)** | 50/50 or 60/40 (G-Sec heavy) | ~11% IRR for SIP with 9–10% volatility; stronger downside protection |
| **Capital preservation / retiree (SWP)** | 20% Equity / 80% G-Sec | IRR 9.3% with only 5% volatility — far superior to pure debt's 7.6% |
| **Pure SIP investor, moderate risk** | 80% Nifty 500 / 20% G-Sec | SIP already smooths volatility; rebalancing improves returns |
Paras Singhal
Co-founder, Aureva Wealth
This article is published for educational and informational purposes only and does not constitute personalised financial or investment advice. Past performance is not indicative of future market results. Readers are advised to consult a SEBI-registered financial adviser before making any investment decisions.