<ul data-eligibleForWebStory="false">Nifty 50, Nifty Bank, Nifty Midcap 150, Nifty Smallcap 250 can dip.Foreign investors buy Indian equities, aiding index downside limit.Short-term view: Nifty outlook turns negative, Nifty Bank weaker, Nifty Smallcap less impacted.Medium-term outlook remains bullish, indexes may see corrective falls before surging.Sensex and Nifty predictions for the week, key support levels, buying opportunities.