Stock Market 18 September: Strong Rally as Nifty & Sensex Gain

Table of Contents

Introduction

The Stock Market 18 September 2025 witnessed a strong session with key benchmarks moving higher. After a week of mixed performances, investor sentiment turned positive, driven by global cues, strong sectoral performance in IT and financials, and buying in select midcaps and smallcaps.

Benchmarks like the Nifty 50 and Sensex posted solid gains, while top gainers such as Poonawalla Fincorp (+12.3%) and Tata Investment (+6.55%) highlighted renewed investor interest. Despite some profit booking in commodity and pharma counters, today’s rally reflected a broad-based market uptrend.

Index Performance on Stock Market 18 September

The market displayed broad-based strength across sectors and indices:

Index	Closing Level	Change	% Change
NIFTY 50	25,420.80	+90.55	+0.36%
SENSEX	83,025.32	+331.61	+0.40%
Nifty Bank	55,721.10	+227.80	+0.41%
Nifty IT	36,758.85	+311.70	+0.86%
S&P BSE SmallCap	54,550.18	+13.15	+0.024%

Nifty 50 added 90 points to close at 25,420.80, with buying across IT, financial, and select industrial stocks.
Sensex climbed 331 points to 83,025.32, supported by heavyweights like Reliance, TCS, and HDFC Bank.
Nifty Bank rose 0.41%, led by PSU and private banks, reflecting renewed confidence in financial stocks.
Nifty IT was the star performer, jumping 0.86% to 36,758.85, showing strong sector-specific buying.
SmallCap index remained relatively flat (+0.024%), but midcaps participated in the rally, indicating selective buying.

Overall, the index performance indicates a broad-based recovery, with large caps leading while smaller stocks consolidated gains.

Top Gainers on Stock Market 18 September

Poonawalla Fincorp (+12.3%) – Climbed to ₹502.1 on high volumes after a preferential issue announcement and hitting a 52-week high.
Tata Investment (+6.55%) – Advanced to ₹7,502.5 on strong sectoral interest and heavy buying.
Zen Technologies (+5%) – Closed at ₹1,621.3 as investors showed confidence in defense and tech plays.
Swan Corp (+4.02%) – Rose to ₹482.9 following dividend announcements, attracting retail and institutional buyers.
Biocon (+3.97%) – Moved up to ₹368.4 after US FDA approval news, boosting pharma sector sentiment.

Top Losers on Stock Market 18 September

Sarda Energy & Minerals (-5.6%) – Fell to ₹568.6 amid profit booking in commodity stocks.
Cohance Lifesciences (-5.55%) – Dropped to ₹912.7 after a block deal, signaling heavy selling pressure.
DCM Shriram (-4.77%) – Corrected to ₹1,313.9 following recent multi-day gains.
Hitachi Energy (-3.63%) – Slipped to ₹19,379 amid consolidation in industrial stocks.
CCL Products (-2.91%) – Declined to ₹879.45 due to profit booking after recent highs.

Summary Table of Top Gainers & Losers – Stock Market 18 September

Top Gainers	Top Losers
Poonawalla Fincorp (+12.3%)	Sarda Energy & Minerals (-5.6%)
Tata Investment (+6.55%)	Cohance Lifesciences (-5.55%)
Zen Technologies (+5%)	DCM Shriram (-4.77%)
Swan Corp (+4.02%)	Hitachi Energy (-3.63%)
Biocon (+3.97%)	CCL Products (-2.91%)

Why Did the Stock Market Rise on 18 September?

The Stock Market 18 September rally was driven by a combination of global factors, sector-specific buying, and stock-specific triggers:

Global Optimism: Investors reacted positively to the US Fed’s recent 25-bps rate cut, which is expected to increase liquidity and encourage foreign inflows into emerging markets like India.
Strong IT Performance: Nifty IT gained 0.86%, supported by large-cap IT stocks and renewed optimism about outsourcing demand from global clients.
Financial & Investment Stocks Lead: Gains in Poonawalla Fincorp (+12.3%) and Tata Investment (+6.55%) attracted buying in financial stocks, boosting Nifty Bank and broader indices.
Positive Corporate News: Stocks like Biocon surged after US FDA approvals, while dividend announcements from Swan Corp supported retail interest.
Mid & Small Cap Selective Buying: While smallcaps were relatively flat, selective buying in midcaps and high-volume stocks contributed to the overall market sentiment.
Profit Booking in Some Counters: Despite the overall rally, some commodity and pharma counters like Sarda Energy and Cohance Lifesciences corrected, indicating healthy market consolidation.

In short: The market’s rise on 18 September was a result of broad-based optimism, sectoral strength, and favorable global cues, making it a confident session for investors.

Conclusion: Stock Market 18 September

The Stock Market 18 September session reinforced bullish sentiment in India’s equity markets. Large-cap indices led the rally, IT and financials emerged as key drivers, and select midcaps and high-volume stocks supported market breadth.

Profit booking in a few counters was healthy and expected after a series of gains, but the overall positive momentum indicates resilience in Indian equities.

Investors should keep an eye on global macro cues, sectoral developments, and corporate announcements for the next few sessions to gauge sustainability of this rally.