Tempsens Instruments IPO: GMP signals 108% listing gain, but should you bid?

Tempsens Instruments (India) IPO has emerged as one of the most closely watched public issues in the market, with the grey market premium (GMP) pointing to a potential listing gain of more than 100%.The IPO closes for subscription today, August 24, and the latest GMP is 323 against the upper price band of 300. Based on this GMP, the estimated listing price works out to 623, implying a potential gain of about 107.67% over the issue price.But investors should be careful about treating GMP as a guarantee of listing gains. Grey market prices are unofficial and can change sharply before listing.So, should investors bid for the Tempsens Instruments IPO? Here's what the GMP, subscription numbers, financials and risks indicate. The 650-crore IPO comprises a fresh issue of shares worth 95 crore and an offer for sale worth 555 crore. The price band has been fixed at 285-300 per share, with a lot size of 50 shares.A retail investor needs to invest a minimum of 15,000 at the upper price band. The issue opened on August 20 and closes today. Shares are expected to be allotted on August 25, with listing scheduled for August 28 on NSE and BSE.The IPO has already received a massive response.As of 12:59 pm on August 24, the issue was subscribed 71.86 times overall. The retail portion was subscribed 42.54 times, the QIB portion 14.51 times and the NII portion a much higher 216.53 times.The issue had received bids worth around 32,727 crore, according to the subscription data provided.TEMPSENS IPO GMP: WHY IS IT TRENDING?The latest GMP of 323 is significantly higher than the IPO's upper price band of 300.If the GMP holds until listing, the implied listing price would be around 623. That would mean a gain of about 107.67% for investors allotted shares at 300.This explains why searches around "Tempsens Instruments IPO", "Tempsens IPO GMP", "Tempsens IPO GMP today", "GMP", "IPO GMP today" and "grey market" are seeing strong interest.However, GMP is not an official indicator of listing price. It is based on unofficial market activity and can move considerably depending on overall market sentiment, demand and the final subscription and allotment dynamics.For an investor, therefore, the GMP can indicate market sentiment, but it should not be the sole reason to apply for an IPO.WHAT DOES TEMPSENS INSTRUMENTS DO?Tempsens Instruments was incorporated in 1990 and operates in thermal engineering and specialised cables.The company manufactures customised temperature-sensing solutions, electrical heating solutions and specialised cables. It is one of India's leading manufacturers of contact and non-contact temperature sensors.According to a Religare IPO note, the company had around 10.5% market share in the temperature sensor segment as of March 31, 2026. It served more than 1,000 unique customers between FY24 and FY26 and exported products to more than 80 countries.Its customers span industries including steel, power, chemicals, oil and gas, glass and pharmaceuticals.The company is also looking to benefit from increasing industrial automation, manufacturing expansion and demand for temperature-monitoring systems.The company's recent financial performance is one of the key positives highlighted in the Religare report.Revenue increased from 274.81 crore in FY24 to 444.88 crore in FY26, representing a 27.23% CAGR.EBITDA increased from 61.13 crore to 113.17 crore during the same period, while profit after tax rose from 40.92 crore to 71.07 crore.In FY26, the company reported an EBITDA margin of 24.83% and a PAT margin of 15.59%. Its return on capital employed stood at 21.61%, while debt-to-equity was relatively low at 0.15 times. Revenue from outside India stood at 125.82 crore.The combination of revenue growth, profitability, exports and relatively low leverage is one reason the IPO has attracted investor interest.Religare's IPO note has given the issue a "Subscribe – Long Term" recommendation.BUT THERE ARE RISKS INVESTORS SHOULD NOT IGNOREThe strong GMP and subscription numbers do not eliminate the underlying business risks.According to the Religare report, Tempsens has exposure to project and OEM business as well as industries such as metals and petrochemicals. A slowdown in these sectors could affect demand.The company also relies on a limited supplier base without definitive supply agreements, which could expose it to raw-material supply disruptions.Another risk is geographical concentration. A significant portion of its manufacturing is concentrated at Udaipur, creating location-specific operational risks.The company's business involving government entities can also be affected by changes in government policies, procurement processes and regulations.Its international business brings another layer of risk because overseas demand can fluctuate.The report also flags customer concentration. A reduction in orders from major customers or the loss of a key customer could affect revenue, cash flows and operations.SO, SHOULD YOU BID FOR TEMPSENS IPO?For investors looking purely at listing gains, the GMP makes Tempsens Instruments look extremely attractive on paper. A 323 GMP against a 300 upper price band suggests an implied listing gain of nearly 108%.But that number comes from the unofficial grey market and should not be treated as a guaranteed return.For investors with a long-term horizon, the picture is broader. Tempsens has reported strong revenue and profit growth, operates across multiple industrial sectors, has an international customer base and maintains relatively low debt. Religare's research report also recommends subscribing to the issue for the long term.At the same time, investors should consider the company's dependence on industrial demand, selected suppliers and major customers, its concentrated manufacturing footprint and exposure to overseas markets.In short: the GMP makes the IPO look attractive for listing gains, while the company's financial performance and market position provide a longer-term investment case. But the 108% GMP should be viewed as a market signal, not a promise of returns.(Disclaimer: The views, opinions, recommendations, and suggestions expressed by experts/brokerages in this article are their own and do not reflect the views of the India Today Group. It is advisable to consult a qualified broker or financial advisor before making any actual investment or trading choices.)- EndsPublished On: Aug 24, 2026 13:24 IST