Mumbai, Sept. 25 -- Indian equity markets closed lower for the week, with the key benchmarks witnessing sharp volatility during the trading sessions. The Sensex declined 0.54%, while the Nifty fell 1.12%. The BSE Mid-Cap index declined 1.69%, while the BSE Small-Cap index shed 0.79%. On the domestic front, S&P Global Ratings raised its forecast for India's FY27 real GDP growth to 7% from 6.6%, citing stronger-than-expected industrial activity, healthy consumption, robust goods exports and higher government investment. Meanwhile, global markets remained under pressure from elevated US Treasury yields and concerns over persistent inflation. The US 10-year Treasury yield climbed to multi-year highs, while the 30-year yield touched its highes...