Nifty 50, the bellwether index, is approaching its all-time high. Sensex has already hit a new high. So, it is natural for some investors to get jittery. Since October 2021, on four occasions, the Nifty 50 index has fallen by 10-15 percent after crossing the 18,000 mark. And now that the markets are close to the 19,000 mark, investors are cautious. Investment advisors, however, are batting for asset allocation instead of deciding a course of action based on short-term returns.