October 2026 IPO Calendar: Mainboard, SME IPOs, GMP, Allotment, Listing & Other Key Details

Diwakar Kumar Singh

Updated: Oct 27th 2026

Finance

A Quick Overview

This IPO Calendar 2026 provides a complete overview of the Mainboard and SME IPOs, including IPO opening and closing dates, price bands, issue sizes, GMP, subscription status, allotment dates, and listing performance. 

List of Mainboard IPOs 2026

Track all major Mainboard IPOs opening, closing, and listing in 2026, along with their price bands, issue sizes, and current status. 

Complete List of SME IPOs 2026

Get the complete SME IPO schedule with opening and closing dates, price bands, issue sizes, listing dates, and current status. 

GMP Details of Mainboard IPOs in 2026 

The GMP details for the 2026 Mainboard IPOs are as follows: 

SME IPO’s GMP Details

SME IPO GMP details for 2026 are provided in the table below:  

Subscription Status - Mainboard IPOs in 2026 

The subscription status of all mainboard IPOs is provided in the table below, and it's worth knowing that a subscription of more than 1x indicates that the number of bids received has exceeded the shares offered. 

SME IPOs Subscription Status 2026

Here are the subscription details for the SME IPOs 2026. 

Mainboard IPO Performance 2026

Review recently listed IPOs by comparing their issue price, listing price, current price, and overall gain or loss. 

SME IPO Performance 2026

Compare  SME IPOs based on their issue price, listing price, listing gains/losses, and post-listing performance.

Summary

The IPO Calendar 2026 helps investors track upcoming Mainboard and SME IPOs, including issue dates, price bands, GMP, allotment dates, and listing schedules. Keeping an eye on these key details can help investors compare opportunities, understand potential listing gains, and make more informed IPO investment decisions.

FAQs

 Q1. Which are the upcoming IPOs in October 2026?

The current Mainboard  & SME IPO calendar includes upcoming issues such as Bombay Coated and Special Steel, M.K.Sons Fine Jewels, Johnsoncab Electricals, HGS (India), Vectras Enprocon, Maxwell Engineering Solutions, Antala Industries, Ajwa Projects, and Carver Roboweld. Their opening dates, closing dates, price bands, issue sizes and listing dates are provided in the calendar above.

Q2. Which IPOs are currently open?

According to the Mainboard  & SME IPO latest calendar, BLS Polymers, SFC Environmental Technologies, EAAA India Alternatives, Wiscon Industries as open. Their respective issue dates, price bands, issue sizes and listing schedules are provided in the SME IPO table.

Q3. What is the IPO Calendar 2026?

The IPO Calendar 2026 is a schedule of Mainboard and SME IPOs, covering important details such as opening and closing dates, price bands, issue sizes, listing dates, GMP, subscription status and allotment information.

Q4. What is IPO GMP?

IPO GMP, or Grey Market Premium, is an unofficial premium at which an IPO may trade in the grey market before its stock market listing. It can indicate market sentiment but is not an official exchange price and may change frequently.

Q5. Which Mainboard IPO has the highest GMP in October 2026?

Based on the GMP data shown on this page as of 27 October 2026, Jio Platforms has the highest ₹251, followed by BLS Polymers GMP at ₹40, while SFC Environmental Technologies has a GMP of ₹20. GMP figures can change based on market sentiment.

Q6. Which Mainboard IPO has the highest subscription?

Based on the subscription data in the table, Jio Platforms recorded the highest overall subscription at 21.36x, followed by BLS Polymers at 3.6x and Paras Healthcare at 2.34x.

Q7. Which SME IPO has the highest GMP in October 2026?

Based on the GMP data in the provided source, Ajwa Projects has the highest GMP of ₹10, followed by Carver Roboweld with a GMP of ₹0, Antala Industries with a GMP of ₹0.

Q8. Which SME IPO has the highest subscription?

Based on the subscription figures in the source, Core4 Engineers has the highest overall subscription among the currently open and recently closed SME IPOs listed in the table, at 1.19x.

Q9. How can I check IPO allotment status?

IPO allotment status can generally be checked after the basis of allotment is finalised. Investors can use the IPO registrar's website or the relevant stock exchange platform by entering details such as PAN, application number or demat details, depending on the available option.

Q10. What is the difference between Mainboard and SME IPOs?

Mainboard IPOs are generally issued by larger companies and are listed on the main segments of Indian stock exchanges. SME IPOs are designed for small and medium-sized enterprises and generally have different eligibility, lot-size and trading requirements.

Q11. What does IPO subscription mean?

IPO subscription indicates how many times the shares offered in an IPO have been bid for. For example, a 5x subscription means bids have been received for five times the number of shares available in that category or overall issue.

Q12. What is IPO listing gain?

IPO listing gain is the percentage difference between the issue price and the listing price of an IPO. For example, if an IPO is issued at ₹100 and lists at ₹120, the listing gain is 20%. Actual gains or losses can change after trading begins.

Disclaimer: IPO dates, GMP, subscription figures, allotment details, and listing performance are subject to change. GMP is unofficial and does not guarantee listing gains or returns. Investors should independently verify information from official sources and review all applicable risks before making any investment decision.  
 
 

Author: Diwakar Kumar Singh

Diwakar Kumar Singh is a BFSI specialist and finance writer with over 7 years of hands-on experience in financial research, content creation, and analysis.

A Gold Medalist in MBA (Marketing) from IMT, he combines deep analytical skills with practical insights gained from evaluating companies, IPOs, unlisted shares, financial ratios, and investment opportunities. Diwakar has personally analysed hundreds of financial instruments and market scenarios, which he uses to break down complex topics into clear, actionable advice.

He has authored numerous in-depth finance articles, published multiple books internationally, and contributed to research publications. His work focuses on helping everyday investors and readers make better-informed financial decisions through well-researched, evidence-based explanations that are always grounded in real-world application rather than theory alone.