The benchmark Indian stock market indices saw a strong rally on Friday, 19 December 2025, driven by robust investor buying amid a surprise Bank of Japan (BoJ) rate hike, which boosted global risk appetite and sentiment in emerging markets.
The Nifty 50 index closed 0.58% higher at 25,966.40 points, compared to 25,815.55 points at the previous close, while the BSE Sensex gained 0.53% to settle at 84,929.36 points, up from 84,481.81 points, according to exchange data. Analysts said the move reflects renewed investor confidence in mid- and small-cap stocks, which have been more volatile this month.
Several individual stocks delivered impressive returns in the past five sessions, with gains of up to 36%, offering lucrative opportunities for short-term traders and long-term investors alike. Here are the top 5.
Top Weekly Gainers: From Meesho to Authum Investment
Meesho Ltd (MEESHO) emerged as one of the biggest winners, despite a slight 4.67% decline to ₹224.50 on Friday from ₹235.50 at the previous close. The company’s stock has surged nearly 36% over the past week and has delivered over 32% returns since its IPO listing, underscoring sustained investor enthusiasm for tech-driven e-commerce platforms in India.
GEM Enviro Management Ltd (GEMENVIRO) also impressed, closing 6.87% higher at ₹63.03, up from ₹67.68. Investors have seen more than 34% returns on the stock in the past five sessions. While the stock remains down 52.86% year-to-date, it has rebounded 20.75% over the past month, highlighting the volatile nature of environmental and waste management stocks amid changing regulatory dynamics.
Agri-Tech (India) Ltd (AGRITECH) saw its shares gain 1.58% to ₹165.20, marking nearly 28% growth over the past week. The stock has climbed 30.82% in the last month, though it remains down 17.88% YTD. Agri-Tech has provided long-term investors with over 314% returns in the past five years, reflecting sustained growth in India’s agritech sector, even amid short-term market fluctuations.
Rain Industries Ltd (RAIN) posted the most striking single-day gain, soaring 12.02% to ₹124.45 from ₹111.10. Over the last week, the stock has risen 16%, and is up 9.46% in the past month. However, Rain Industries remains down 29.21% YTD, and the stock has lost 2.9% over five years, highlighting cyclical challenges in the chemical and industrial materials sector.
Finally, Authum Investment & Infrastructure Ltd (AIIL) ended Friday 7.45% higher at ₹2,904.05, from ₹2,702.65. The stock has gained over 11% in the past five sessions, with 6.57% growth in the last month. On a broader horizon, Authum Investment has delivered 53.98% YTD returns in 2025 and 65.43% returns over the past year, making it one of the strongest performers in India’s financial and infrastructure segments.
What This Means for Investors
Analysts say the recent rally demonstrates a combination of global factors, such as central bank policy shifts, and domestic optimism, particularly in mid-cap and sectoral plays. While broader markets have been volatile amid inflation concerns and interest rate expectations, selective stock gains indicate targeted opportunities for investors willing to navigate short-term swings.
With the Nifty and Sensex closing the week higher, market watchers suggest monitoring policy cues from global central banks alongside domestic earnings updates, as these will likely shape market sentiment heading into 2026.
