A comprehensive 19-year study by WhiteOak Capital Asset Management has confirmed that switching SIP investments to previous year's top-performing market-cap categories significantly underperforms compared to maintaining consistent investments. The study analyzed two approaches: investors who switched annually to the previous year's best-performing category (large-cap, mid-cap, or small-cap), and those who remained invested in their chosen category throughout the period. As reported by Mint, the switching strategy generated an XIRR of 14.76% compared to 17.05% for investors who remained invested in the mid-cap index as of May 31, 2026. The study covered the period from April 1, 2005, to May 31, 2026, with the first 10-year rolling return observation beginning on April 1, 2015.
The study revealed mixed results across different market segments, with switching strategies delivering slightly better returns in small-cap investments compared to mid-cap performance. According to Mint, the switching strategy generated an XIRR of 14.75% for small-cap investments, marginally higher than the 14.63% earned by investors who remained invested in the small-cap index throughout the period. The average 10-year SIP XIRR for the switching strategy stood at 15.75% for mid-cap investments, compared with 17.55% for investors who remained invested in the mid-cap index. For small-cap switching, the average 10-year SIP XIRR was 15.75% compared with 14.91% for the small-cap index, though the margin of outperformance remained relatively small.
Financial experts are now reinforcing the study's findings with additional warnings about performance chasing behavior. Debasish Mohanty, chief strategy officer at The Wealth Company Mutual Fund, emphasizes that "the belief that yesterday's winners will continue to be tomorrow's winners is one of the biggest misconceptions in mutual fund investing." According to Mint, FundsIndia's research shows that only about 1 in 4 top-quartile funds remain in the top quartile over the following three years. Rishabh Garg, CEO-Digital at FundsIndia, notes that "one-year returns tell you what happened in a very specific market phase. They say almost nothing about what will happen next." The experts warn that frequent switching can disrupt the discipline that makes SIP investing effective, often leading to "buying the cycle twice" but on the wrong side both times.
Small-cap funds emerge as the most vulnerable category to performance chasing behavior, with experts highlighting specific risks in this segment. Varun Gupta, CEO of Groww Mutual Fund, warns that "investors who chase sector funds are essentially trying to time not just the market but a specific industry cycle." Varun Gupta, CEO of Groww Mutual Fund, noted that funds generally rise to the top of performance rankings after a significant rally in the stocks, sectors or themes they own, by the time investors notice the outperformance, valuations may already be elevated. The study's findings demonstrate that consistency and discipline may prove more effective than repeatedly chasing the latest market winner, with the research covering the period from April 1, 2005, to May 31, 2026, providing a comprehensive view of long-term SIP performance across different market cycles.
