SBI Nifty 500 Index Fund NFO period extended; details inside SBI Nifty 500 Index Fund NFO period extended; details inside Investors gain extra time to participate in the SBI Nifty 500 Index Fund with an extended NFO period. Vardan Pandhare / Tuesday, September 24, 2024 / Article rating: 3.8 SBI Nifty 500 Index Fund is designed to generate returns that align with the total returns of the Nifty 500 Index.