Investor Corner/Building and judging a portfolio/Portfolio Construction & Behaviour
3.1.9 Core-Satellite Approach
A core-satellite approach builds a portfolio around a low-cost core, usually index or large cap funds, with smaller satellite positions in higher-conviction active or thematic funds layered around it.
The structure explained
The core, typically the majority of the portfolio, is invested in broad, low-cost, diversified funds that are expected to reliably capture overall market returns over time. The satellite portion, a smaller slice, is invested in more concentrated, higher-conviction bets, whether that means an actively managed fund, a sector fund, or a specific thematic idea the investor believes in.
The core-satellite approach divides the portfolio into two parts. The core (typically 60-80% of the portfolio) holds broad, diversified, low-cost investments: index funds, large-cap funds, or multi-cap funds that provide market-level returns with minimal tracking error. The satellite portion (20-40%) holds higher-conviction, higher-risk allocations: mid-cap and small-cap funds, sector funds, factor funds, or international exposure. The core provides stability and market-level returns. The satellites provide the potential for outperformance and diversification.
Why this combination works well for many investors
The core provides a dependable foundation that should perform reasonably well even if every single satellite bet turns out to disappoint. The satellite portion provides room to express genuine conviction or pursue a specific opportunity, without risking the entire portfolio's outcome on that single idea being correct.
The advantage of this structure is that even if the satellite positions underperform badly, the damage to the overall portfolio is contained because the core is large and stable. A satellite allocation of 15% to a small-cap fund that falls 40% reduces the total portfolio by only 6%. Meanwhile, if the same satellite delivers 30% excess return over the core, the portfolio gains 4.5% in additional return. The asymmetry of a large stable core and small adventurous satellites creates a risk profile that is more comfortable to live with than an all-satellite portfolio.
Sizing the satellite portion sensibly
There is no universal rule for how large the satellite portion should be, but keeping it meaningfully smaller than the core is what preserves the approach's central benefit: even a satellite bet that goes badly wrong should not be able to derail the portfolio's overall result.
How PriLytics helps. PriLytics shows your full portfolio composition in one view, making it easy to check that your satellite bets genuinely remain a smaller slice next to your core holdings. See your true asset allocation.
In practice, a core-satellite portfolio for an Indian investor might look like: 50% in a Nifty 50 or flexi-cap index fund (core), 15% in a mid-cap fund, 10% in a small-cap fund, 10% in an international fund, and 15% in debt (satellites and stability). The exact percentages depend on individual circumstances, but the principle is constant: anchor the portfolio with something broad and cheap, then add flavour with smaller, more targeted positions. Review the satellites annually and replace any that have not met their purpose over a reasonable time frame.