Tonbo Imaging IPO: GMP Trends, Subscription Status and Listing Outlook
The Tonbo Imaging IPO, closing on October 19, saw its grey‑market premium rise to ₹525, while the issue attracted roughly 40‑times oversubscription on day three.

Tonbo Imaging IPO closed on October 19, 2026, with its grey‑market premium (GMP) hitting a peak of ₹525 and the issue reportedly oversubscribed around 40 times by the third day.
IPO subscription status
According to the prospectus, the book‑building issue opened on October 15 and closed on October 19, offering about 1.22 crore equity shares at a price band of ₹665‑₹700. The issue size totals roughly ₹852 crore, and allocation was scheduled for October 21 with refunds on October 22.
Tonbo Imaging IPO GMP today
The latest grey‑market data shows a GMP of ₹525 as of the most recent update, reflecting a 75 % estimated listing gain. The premium has fluctuated between a low of ₹270 on October 11 and the current high of ₹525, illustrating strong investor sentiment.
Tonbo IPO GMP trends
Day‑wise movements recorded the GMP at ₹520 on October 19, ₹500 on October 17, and ₹460 on October 13, among other levels. These figures are unofficial and can change rapidly based on market dynamics.
Company background
Founded in December 2003, Tonbo Imaging India is a defence‑electronics original equipment manufacturer. It supplies electro‑optical, infrared and surveillance systems to armed forces in 24 countries, with more than 28,000 units deployed. The firm’s products are developed in‑house and are free from ITAR restrictions.
What investors should consider
While the GMP suggests a positive outlook, it is an unregulated indicator and should not replace a thorough assessment of the company’s fundamentals, valuation and risk factors. Prospective applicants are advised to review the DRHP, subscription data and financial statements before committing.
For a comparable IPO that also attracted attention for its grey‑market premium, see the Zetwerk IPO GMP focus article.
Sources: IPO Watch, Moneycontrol.com, Inc42.



