temperature sensor manufacturing plant with industrial thermocouples and heating equipment
The Tempsens Instruments IPO has been one of the most closely watched mainboard offers of August 2026. With a strong grey market premium, a heavily oversubscribed book, and a company that quietly dominates a niche most retail investors have never heard of, this one has pulled a lot of eyes.
If you are trying to decide whether to apply, track your allotment, or simply understand what this company actually does before listing day, here is everything laid out in plain language — dates, price, financials, and the risks nobody puts in the headline.
Tempsens Instruments IPO: Key Details at a Glance
| Detail | Information |
|---|---|
| IPO Open Date | August 20, 2026 |
| IPO Close Date | August 24, 2026 |
| Price Band | ₹285 – ₹300 per share |
| Face Value | ₹4 per share |
| Lot Size | 50 shares |
| Minimum Investment (Retail) | ₹15,000 (at upper band) |
| Total Issue Size | ₹650 crore |
| Fresh Issue | ₹95 crore |
| Offer for Sale (OFS) | ₹555 crore |
| Listing Exchanges | BSE and NSE |
| Allotment Date | August 25, 2026 (expected) |
| Listing Date | August 28, 2026 (tentative) |
| Lead Manager | ICICI Securities Ltd. |
| Registrar | Kfin Technologies Ltd. |
What Is the Tempsens Instruments IPO?
Tempsens Instruments (India) Limited launched a ₹650 crore book-built IPO that opened on August 20, 2026 and closed on August 24, 2026. The issue is a mix of two parts: a fresh issue of ₹95 crore (about 31.6 lakh new shares) and a much larger Offer for Sale (OFS) of ₹555 crore by existing shareholders.
That split matters. Only ₹95 crore actually flows into the company — the rest goes to promoters and early investors cashing out part of their holdings. It is worth understanding this before you apply, because a heavy OFS component is common in profitable, established businesses but means the fresh capital for growth is limited.
At the upper price band of ₹300, the company is targeting a post-issue market capitalisation of roughly ₹2,515 crore.
About Tempsens Instruments (India) Limited
Incorporated in 1990 and headquartered in Vadodara, Gujarat, Tempsens Instruments is a thermal engineering and specialised cable manufacturer. In simpler terms, the company builds the sensors and heating systems that keep heavy industries running safely at extreme temperatures.
Its product range spans three main verticals:
- Temperature Sensing Solutions — thermocouples, resistance temperature detectors (RTDs), infrared pyrometers, online thermal imagers, fibre optic sensors, and furnace monitoring cameras.
- Electrical Heating Solutions — immersion, process, cartridge, band, tubular, and flexible heaters.
- Specialised Cables — instrumentation cables, thermocouple and RTD cables, and nickel alloy conductors.
These aren’t consumer products. They go into steel plants, chemical facilities, glass manufacturing, petrochemicals, and other high-heat industrial environments where getting temperature wrong is dangerous and expensive.
Why the market takes this company seriously
A few facts explain the strong investor interest:
- Tempsens is the largest manufacturer of contact and non-contact temperature sensors in India by revenue, with an estimated 10.5% market share in FY2026.
- It is the only Indian company manufacturing non-contact temperature sensors, fibre optic sensors, pyrometers, and online thermal imagers.
- The company serves more than 3,800 customers and exports to over 80 countries.
- It operates 15 manufacturing units across India, the UAE, South Korea, Indonesia, Germany, and Poland.
That combination of a niche product, market leadership, and high technical entry barriers is exactly the kind of moat institutional investors look for.
Tempsens Instruments IPO GMP (Grey Market Premium)
The grey market premium tells you what investors are unofficially willing to pay above the issue price before listing. For this IPO, the GMP stayed strong throughout the bidding window.
Here is how the GMP moved day by day:
| Date | GMP (₹) |
|---|---|
| August 18 | ₹172 |
| August 19 | ₹220 |
| August 20 | ₹270 |
| August 21 | ₹290 |
| August 22 | ₹321 |
| August 23 | ₹313 |
| August 24 | ₹300 – ₹330 |
At a GMP of around ₹300 on the closing day, the indicative listing price works out to roughly ₹600 per share — pointing to a potential listing gain near 100% over the ₹300 upper band.
An honest caution: GMP is an informal, unofficial number set by grey market dealers. It is not published by any exchange, it swings with sentiment, and it is not a guarantee of your actual listing-day return. Treat it as a mood indicator, not a promise.
Tempsens Instruments IPO Subscription Status
Demand was strong from the first day and only built from there.
- Day 1: Subscribed 5.95 times
- Day 2: Subscribed 21.69 times
- Day 3 (closing): Booked around 21.66 times at the latest available count
The category-wise breakup on the final day showed where the appetite was strongest:
| Investor Category | Subscription |
|---|---|
| Non-Institutional Investors (NII) | ~52.98 times |
| Retail Individual Investors (RII) | ~18.67 times |
| Qualified Institutional Buyers (QIB) | ~3.31 times |
The heavy NII and retail participation reflects the strong grey market buzz, while QIB demand confirmed institutional confidence in the fundamentals.
Tempsens Instruments Financial Performance
Numbers are where a business proves itself, and Tempsens has shown consistent growth across the last three financial years.
| Metric | FY24 | FY25 | FY26 |
|---|---|---|---|
| Total Income (₹ Cr) | 278.04 | 382.47 | 455.86 |
| Profit After Tax (₹ Cr) | — | ~62.5 | 71.07 |
| EBITDA (₹ Cr) | — | — | 113.17 |
Key takeaways from FY26:
- Revenue grew about 19.19% year-on-year to ₹455.85 crore.
- Profit After Tax rose about 13.60% to ₹71.06 crore.
- Operating EBITDA margin held strong at 24.83% — margins above 24% in a manufacturing business are genuinely healthy.
- The balance sheet is low-leverage, with a net debt-to-equity ratio of just 0.15.
The company plans to use fresh issue proceeds mainly to repay about ₹55 crore in borrowings and invest around ₹18.13 crore in capex for its electrical heating and specialised cable divisions.
Strengths of the Tempsens Instruments IPO
- Market leadership in a niche with high technical entry barriers.
- Only Indian player in several specialised temperature-sensing product lines.
- Consistent 24%+ operating margins and steady revenue growth.
- Diversified across 13 product categories and three verticals, giving a healthy mix of project income and recurring MRO (maintenance, repair, overhaul) demand.
- Strong export footprint across 80+ countries reduces dependence on any single market.
- Low debt and a clean balance sheet.
Risks You Should Know Before Applying
No IPO is one-sided, and the risks here are real:
- Heavy OFS component: ₹555 crore of the ₹650 crore issue is existing shareholders selling, not fresh growth capital.
- Goodwill on the books: The Marathon Heater amalgamation created ₹106.13 crore of goodwill. Any future impairment would reduce reported profits.
- Loss-making subsidiaries: Some overseas entities have reported losses in recent years, which the parent may need to absorb.
- Customer and sector concentration: Revenue leans on a few end-user industries like metals and petrochemicals — a downturn there would hit demand.
- Comparability issues: FY24, FY25, and FY26 aren’t directly comparable due to recent acquisitions and amalgamations, so period-on-period trends can be misleading.
- Outstanding borrowings of about ₹108.32 crore as of July 31, 2026.
Tempsens Instruments IPO Important Dates
| Event | Date |
|---|---|
| IPO Opens | August 20, 2026 |
| IPO Closes | August 24, 2026 |
| Basis of Allotment | August 25, 2026 |
| Refund Initiation | August 27, 2026 |
| Credit of Shares to Demat | August 27, 2026 |
| Listing Date | August 28, 2026 |
How to Check Tempsens Instruments IPO Allotment Status
Once the basis of allotment is finalised on August 25, 2026, you can check your status in two ways:
- Through the Registrar (Kfin Technologies): Visit the Kfin IPO status page, select Tempsens Instruments, and enter your PAN, application number, or DP/Client ID.
- Through the BSE website: Go to the BSE IPO allotment page, choose “Equity,” select Tempsens Instruments from the dropdown, and enter your application number and PAN.
You can also check directly through your broker app or demat account.
Tempsens Instruments IPO: Should You Apply?
Here is the balanced view.
The company has the profile analysts genuinely like — a clear market leader in a specialised, hard-to-enter industry, healthy and consistent margins, a low-debt balance sheet, and a strong export business. The subscription numbers and grey market premium reflect that confidence.
On the other side, the valuation is not cheap, the bulk of the issue is an Offer for Sale rather than growth capital, and there are real risks around goodwill, subsidiary losses, and sector concentration.
If you are a long-term investor drawn to a fundamentally strong industrial niche leader, this fits that thesis. If you are chasing listing-day gains, the strong GMP is encouraging but remember that grey market numbers are unofficial and can shift quickly.
Disclaimer: This article is for informational and educational purposes only and is not investment advice. IPO investments carry market risk. Please read the Red Herring Prospectus (RHP) carefully and consult a SEBI-registered financial advisor before investing. Figures such as GMP are unofficial and can change.
Frequently Asked Questions (FAQ)
What is the Tempsens Instruments IPO price band? The price band is ₹285 to ₹300 per share, with a face value of ₹4.
What is the lot size and minimum investment for the Tempsens Instruments IPO? The lot size is 50 shares. The minimum retail investment is ₹15,000 at the upper price band of ₹300.
When will Tempsens Instruments shares list? The tentative listing date is August 28, 2026, on both BSE and NSE.
What is the Tempsens Instruments IPO GMP today? On the closing day (August 24, 2026), the GMP was in the range of ₹300 to ₹330, indicating a possible listing gain of around 100%. GMP is unofficial and changes with market sentiment.
How much was the Tempsens Instruments IPO subscribed? The issue was subscribed around 21.66 times overall, with NIIs leading at nearly 53 times, retail at about 18.67 times, and QIBs at about 3.31 times.
Who is the registrar for the Tempsens Instruments IPO? Kfin Technologies Ltd. is the registrar, and ICICI Securities Ltd. is the book-running lead manager.
What does Tempsens Instruments do? It manufactures temperature sensors, industrial electrical heaters, and specialised cables for heavy industries such as steel, chemicals, glass, and petrochemicals. It is India’s largest manufacturer of contact and non-contact temperature sensors by revenue.
Last updated: August 24, 2026. All figures are based on publicly available data from the IPO’s Red Herring Prospectus and market sources as of the publication date. Please verify the latest numbers before making any investment decision.