Why These Stocks Are Rising and Falling Today: Syrma SGS Technology, Tega Industries & HBL Engineering Gain; Afcons Infrastructure, PB Fintech & ACME Solar Decline

Indian benchmark indices, the Sensex and Nifty 50, opened higher in early trading as investors tracked global cues and key domestic developments. Market sentiment remained cautious, however, with foreign investors continuing to sell Indian equities.

The US Federal Reserve raised its policy rate by 25 basis points to 3.75%-4%, marking its first rate hike in three years. The move has raised expectations of further monetary tightening, which could support the US dollar and influence foreign investment flows into emerging markets such as India.

Meanwhile, the much-awaited ₹22,569-crore Initial Public Offering (IPO) of the National Stock Exchange of India (NSE) opened for subscription. The NSE IPO is expected to remain a key focus for investors during the trading session.

Foreign Institutional Investors (FIIs) remained cautious, selling equities worth ₹2,032.61 crore on Wednesday. At the same time, a slight pullback in Brent crude oil prices offered some relief to Indian markets. However, elevated US interest rates and a stronger dollar remain key factors for investors to track.

Top Gainers for September 17: Syrma SGS Technology, Tega Industries and HBL Engineering Gain Up to 8%

Syrma SGS Gains 7%

Syrma SGS Technology Ltd emerged as the top gainer in the Nifty 500 index on September 17, 2026. At 12 pm, the Syrma SGS Technology Ltd share price was trading at ₹1,626.60, up 7.64% from its previous close on the NSE.

Trading volumes also remained strong at 65.9 lakh shares, compared with the 30-day average volume of 16.9 lakh shares.

Recently, Syrma SGS Technology Ltd Managing Director Jasbir Singh Gujral said the company’s newly commissioned joint venture with Italy-based Elemaster has the potential to become a sizeable business. He estimated that the joint venture could generate revenue of $50 million to $100 million over the next three to five years.

Tega Industries Rises Over 6%

Tega Industries Ltd share price rose to ₹1,836.10, gaining 6.93% from its previous close on the NSE.

Trading volumes stood at 5.97 lakh shares, compared with the 30-day average volume of 3.09 lakh shares.

Tega Industries Ltd has updated the pricing basis and utilisation plan for its proposed preferential issue of equity shares. The company has fixed the issue price at ₹1,994 per share. The Kolkata-based industrial machinery manufacturer disclosed the details in a filing with the stock exchanges on September 11, 2026.

HBL Engineering Gains 6%

At 12 pm, the HBL Engineering Ltd share price was trading at ₹746.95, reflecting a gain of 6% from its previous close on the NSE.

Trading volumes also remained strong at 45 lakh shares, compared with the 30-day average volume of 17.1 lakh shares.

Top Losers for September 17: Afcons Infrastructure, PB Fintech and ACME Solar Fall Up to 4%

Afcons Falls 4%

Afcons Infrastructure Ltd emerged as the top loser in the Nifty 500 index on September 17, 2026.

At 12 pm, the Afcons Infrastructure Ltd share price was trading at ₹247.60, down 4.18% from its previous close on the NSE.
The stock declined amid profit booking, with investors selling the stock after its recent gains.

PB Fintech Drops Over 3%

PB Fintech Ltd was trading at ₹1,767.60, down 3.26% from its previous close on the NSE.

On September 16, the company announced significant capital allocations through its M&A and Investment Committee. The company plans to acquire the remaining 20% stake in Myloancare Ventures, making it a wholly owned subsidiary.

The group will also invest up to ₹11 crore in its digital car care and account aggregator subsidiaries. Meanwhile, PB Fintech’s co-CEO dismissed reports of stepping down from his leadership role.

ACME Solar Falls Over 2%

At 12 pm, the ACME Solar Holdings Ltd share price was trading at ₹406.70, down 2.70% from its previous close on the NSE.
The company recently informed the exchanges that it had commissioned 66.68 MW of solar capacity and 300 MWh of battery energy storage capacity in Bikaner, Rajasthan.

Following the commissioning, the company’s operational renewable energy capacity increased to around 3,057 MW, while its battery energy storage capacity reached 4.16 GWh.