Tonbo Imaging shares began trading on October 23, 2026, at about a 66% premium to their Rs 700 initial public offering price. The Bengaluru-based defence electronics company opened at Rs 1,160 on the National Stock Exchange and Rs 1,162 on the BSE after an Rs 852.18 crore offering made up entirely of shares sold by existing investors.
Key Takeaways
- The NSE opening price was 65.7% above the IPO price, while the BSE debut represented a 66% premium.
- The offering attracted subscriptions of 132.81 times but raised no fresh capital for Tonbo.
- FY26 total income fell 22% and profit after tax declined 30%, providing a weaker operating backdrop to the debut.
Table of Contents
- Tonbo Imaging shares open well above the offer price
- Existing shareholders receive the IPO proceeds
- FY26 earnings declined before the market debut
- Conclusion
Tonbo Imaging shares open well above the offer price
The opening prices put the shares Rs 460 above the offer price on the NSE and Rs 462 above it on the BSE. These are opening-session comparisons with the IPO price, not closing returns for the first day of trading.
The listing followed strong demand during the October subscription window. Qualified institutional buyers, excluding anchor investors, recorded the highest subscription multiple among the disclosed investor categories.
| Item | Details |
|---|---|
| Subscription window | October 15–19, 2026 |
| IPO price band | Rs 665–Rs 700 per share |
| Retail application lot | 21 shares; Rs 14,700 at the upper price |
| Retail subscription | 31.11 times |
| Institutional subscription | 293.56 times, excluding anchor investors |
| Non-institutional subscription | 156.36 times |
Existing shareholders receive the IPO proceeds
The public issue comprised an offer for sale of approximately 1.22 crore shares. Because there was no fresh share issue, the proceeds go to selling shareholders rather than to Tonbo for product development, manufacturing or other business spending.
The company's October 2026 prospectus disclosure identifies a red herring prospectus dated October 10, 2026, filed with the Registrar of Companies in Karnataka and subsequently with SEBI and the stock exchanges. That disclosure establishes the offering's documentation and the equity shares' Rs 2 face value; it does not establish the debut trading prices.
Ahead of the public offering, anchor investors were allotted 36.48 lakh shares at Rs 700 each, raising approximately Rs 255 crore. JM Financial and IIFL Capital Services were the book-running lead managers, with KFin Technologies serving as registrar.
FY26 earnings declined before the market debut
Tonbo's total income declined to Rs 370 crore in FY26 from Rs 474 crore in FY25. Profit after tax fell to Rs 51 crore from Rs 73 crore, meaning profit contracted faster than income.
The company designs and manufactures electro-optic and infrared systems for defence and security applications. Its products include thermal imaging devices, weapon sights, missile seekers, fire-control systems and guidance equipment.
Tonbo serves defence and security organisations across 24 countries and has more than 28,000 systems deployed. It had 339 permanent employees as of June 30, 2026. That operating footprint describes the business entering the public market, rather than a forecast of future growth.
Conclusion
The debut established a substantial premium to Tonbo's offer price despite lower FY26 income and profit. The October 23 closing price will show how much of that opening premium remains at the end of its first trading session.
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