ICICI Prudential AMC suggests monitoring total mid- and small-cap exposure as small-cap valuations reach a P/E of 31.6x. When this segment exceeds 30-35% of your total portfolio, investors may consider rebalancing to manage risk during market volatility.
With the Nifty Smallcap 100 index trading at a price-to-earnings (P/E) ratio of 31.6x as of August 2026, compared to the Nifty 50's 20x, investors are seeing a widening gap in valuations. This market rally has pushed many equity portfolios toward a higher concentration in smaller, high-risk companies. While inflows into these segments remain strong—surpassing ₹14,900 crore in August alone—market experts suggest that it is time for a portfolio health check.
The Risk of Portfolio Drift
Many investors view Systematic Investment Plans (SIPs) as a set-it-and-forget-it tool for wealth creation. However, the market’s natural movement can lead to what is known as portfolio drift. When small-cap stocks perform well, their share of your total portfolio grows automatically. Over time, an investor who intended to have a balanced mix may find themselves heavily overexposed to higher-risk assets without actively choosing to increase that risk. This shift often goes unnoticed until the market faces a correction, at which point smaller, less liquid stocks tend to decline more sharply than large-cap peers.
Using the 30-35% Benchmark
To manage this, Chintan Haria, Principal of Investment Strategy at ICICI Prudential Asset Management Company, suggests focusing on the aggregate weight of mid- and small-cap assets rather than evaluating SIPs in isolation. A practical threshold is to ensure these segments do not exceed 30-35% of your total portfolio value.
This benchmark serves as a signal to review and potentially rebalance holdings. If your combined exposure to mid- and small-cap funds has significantly crossed this range due to recent gains, it may be a prudent time to recalibrate. The goal is not to stop your SIPs, which remain a disciplined way to invest, but to ensure that your risk management framework stays intact.
Maintaining Asset Balance
For a balanced approach, the remaining 60-70% of a portfolio—ideally spread across large-caps, debt, and other strategic assets—should act as a hedge during market downturns. Investors who have seen their small-cap exposure climb above the 35% mark may consider moving some gains into larger, more stable investments to protect their overall capital. Monitoring this allocation at regular intervals helps prevent the portfolio from becoming too aggressive, ensuring that the investments align with your original financial goals and risk appetite rather than current market trends.