Nifty Outlook: Nifty needs to sustain above 25800 for upward momentum

• Nifty gained for the second day but faced resistance near its 50-day moving average (25,740), closing at 25,713.
• US Supreme Court's rejection of Trump's tariffs boosted the market, but Nifty failed to hold higher levels.
• IDFC First Bank shares plunged over 16% due to a Rs 590 crore fraud disclosure in its Chandigarh branch.
• Experts emphasize Nifty sustaining above 25,800 for a rally towards 26,000, with 25,570 as key support.
• Market volatility is expected to increase as the February monthly F&O expiry approaches.