Tempsens Instruments Grey Market: Amazing 90% Premium Signals Strong IPO Debut

The Tempsens Instruments grey market has turned sharply bullish just two days into the IPO’s subscription window, with the premium climbing to around Rs. 270 and the overall issue crossing 7 times subscription. Here’s a full breakdown of the current GMP trend, subscription numbers, and the business behind the buzz.

What Is Driving the Tempsens Instruments Grey Market Right Now?

The Tempsens Instruments grey market premium stood at just Rs. 65 on August 16, days before the IPO even opened. By August 21, the second day of bidding, it had surged to roughly Rs. 270-274, implying an estimated listing price near Rs. 570 against the upper price band of Rs. 300, a potential premium of close to 90%. That kind of jump inside a single week reflects how quickly investor sentiment shifted once the issue actually opened and early subscription numbers came in strong.

IPO Price Band, Size, and Key Dates

Tempsens Instruments (India) is a mainboard IPO with a price band of Rs. 285 to Rs. 300 per share and a lot size of 50 shares. The total issue size is Rs. 650 crore, made up of a Rs. 95 crore fresh issue and a much larger Rs. 555 crore offer for sale, meaning the bulk of the money raised goes to selling shareholders rather than the company itself. Bidding opened on August 20 and closes August 24, with allotment expected on August 25 and a tentative listing date of August 28 on both NSE and BSE.

Subscription Status: Investors Rush In

By the afternoon of Day 2, the issue had crossed 7 times overall subscription, with bids received for over 11.4 crore shares against roughly 1.5 crore shares on offer. Non-institutional investors led the charge, with that category subscribed nearly 17 times, while retail investors subscribed their portion around 7.1 times. Within the NII segment, smaller non-institutional investors alone had already subscribed over 11 times by that point.

About Tempsens Instruments

Founded in 1990 and based in Vadodara, Gujarat, Tempsens Instruments describes itself as India’s largest manufacturer of contact and non-contact temperature sensors by revenue, holding an estimated 10.5% market share in Fiscal 2026. The company says it’s currently the only Indian manufacturer of non-contact temperature sensors, fibre optic temperature sensors, thermal profiling systems, pyrometers, and online thermal imagers. Its business spans three verticals: temperature sensing solutions, electrical heating solutions, and specialised cables, with roughly 71.5% of FY26 revenue coming from domestic sales and the remaining 28.5% from exports.

Financial Performance

Tempsens Instruments reported revenue of Rs. 444.9 crore in FY26, up 17.5% from Rs. 378.5 crore in FY25, while profit rose 11.2% to Rs. 67.3 crore from Rs. 60.6 crore over the same period. The company’s EBITDA margin stands at approximately 25%. Of the fresh issue proceeds, Rs. 18.1 crore is earmarked for capital expenditure and Rs. 55 crore for debt repayment, with the remainder set aside for general corporate purposes.

The Market Opportunity Behind the Tempsens Instruments Grey Market Buzz

Part of what’s fuelling investor interest is the underlying market itself. India’s temperature sensor market was valued at roughly Rs. 18.8 billion in FY26 and is projected to grow to Rs. 28.8 billion by FY31, an 8.9% compound annual growth rate, driven by rising industrial automation, process manufacturing, and quality-control needs across sectors. ICICI Securities and JM Financial are the book-running lead managers for the issue.

Other IPOs Drawing Grey Market Attention This Week

Tempsens isn’t the only issue seeing active grey market interest right now, our coverage of the Sunshine Pictures GMP looks at a very differently positioned company also drawing strong subscription demand this IPO season.

A Broader Wave of Mainboard IPOs

Investor appetite for mainboard IPOs has stayed strong across sectors this year, our coverage of the Horizon Industrial Parks GMP looks at a very different kind of listing navigating its own grey market swings. Official bidding data for this issue is available through the NSE India IPO portal.

What Happens Next

With bidding open until August 24 and allotment expected August 25, the real test for the Tempsens Instruments grey market premium comes on the August 28 listing date, since GMP is an unofficial, informal indicator and can swing significantly between now and then based on overall market conditions and final subscription numbers.

For more IPO and business updates, check out our Business section.

Frequently Asked Questions

What is the Tempsens Instruments grey market premium today?
As of August 21, 2026, the GMP stood at approximately Rs. 270-274, implying a potential listing premium of close to 90% over the upper price band.

What is the price band for the Tempsens Instruments IPO?
The price band is Rs. 285 to Rs. 300 per share, with a lot size of 50 shares.

How much has the Tempsens Instruments IPO been subscribed?
The issue crossed 7 times overall subscription by Day 2, with non-institutional investors leading at nearly 17 times and retail investors at around 7.1 times.

When does the Tempsens Instruments IPO list?
The tentative listing date is August 28, 2026, on both NSE and BSE, following allotment on August 25.

What does Tempsens Instruments manufacture?
It manufactures contact and non-contact temperature sensors, electrical heating solutions, and specialised cables, and is India’s largest manufacturer of temperature sensors by revenue.

Is the Tempsens IPO good?
Given the strong subscription demand and how sharply the Tempsens Instruments grey market premium has climbed since the issue opened, near-term listing sentiment looks positive, though grey market activity is unofficial and doesn’t guarantee actual gains once trading begins.

What is the GMP grey market price for Tempsens Instruments?
The Tempsens Instruments grey market price, commonly called GMP, stood at roughly Rs. 270-282 through August 21, 2026, implying an expected listing gain of around 90-94% over the Rs. 300 upper price band.

Where can I check the Tempsens Instruments grey market price?
The Tempsens Instruments grey market price is tracked informally by IPO-focused financial portals that publish daily GMP updates, since grey market trading itself happens outside any official exchange.

How do you check the grey market price of an IPO like Tempsens Instruments?
Checking the Tempsens Instruments grey market works the same way as tracking any other IPO’s premium: financial portals collect informal dealer quotes and publish them daily, though the figure remains unofficial right up until the actual listing date.