# IPO GMP: Bonfiglioli vs Tonbo vs Sahajanand Medical vs Zetwerk

> Four Indian IPOs open on 15 October with grey market premiums.
- Title: IPO GMP: Bonfiglioli vs Tonbo vs Sahajanand Medical vs Zetwerk
- Summary: Four Indian IPOs open on 15 October with grey market premiums. Four companies including Bonfiglioli Transmissions, Tonbo Imaging, Sahajanand Medical…
- Keywords: bonfiglioli transmissions, tonbo imaging, sahajanand medical technologies, zetwerk, ipo, price band, grey market premium, listing price, anchor investor bidding, issue size, news, india
- Source: mint — https://livemint.com/market/ipo/ipo-gmp-bonfiglioli-vs-tonbo-vs-sahajanand-medical-vs-zetwerk-dates-price-band-key-details-11791797199572.html
- Author: Dhanya Nagasundaram
- Published: 2026-10-12T10:39:45+00:00
- Read time: 2 min
- Topics: bonfiglioli transmissions, tonbo imaging, sahajanand medical technologies, zetwerk, ipo, price band, grey market premium, listing price, anchor investor bidding, issue size, news, india
## IPO Dates
Four companies including Bonfiglioli Transmissions, Tonbo Imaging, Sahajanand Medical Technologies and Zetwerk open their IPOs on 15 October and close on 19 October.
## Issue Sizes
The IPOs range from ₹ 475 crore to ₹ 5,012 crore with Zetwerk having the largest offering at ₹ 5,012 crore.
## Bonfiglioli Transmissions IPO
Bonfiglioli Transmissions has a price band of ₹ 558, ₹ 586 per share with an estimated listing price of ₹ 739.
## Tonbo Imaging IPO
Tonbo Imaging has a price band of ₹ 665, ₹ 700 per share with an estimated listing price of ₹ 1,045.
## Sahajanand Medical Technologies IPO
Sahajanand Medical Technologies has a price band of ₹ 327, ₹ 344 per share with an estimated listing price of ₹ 384.
## Zetwerk IPO
Zetwerk has a price band of ₹ 143, ₹ 151 per share with an estimated listing price of ₹ 165.
## Grey Market Premiums
The grey market premiums for the IPOs range from +40 to +345 with Tonbo Imaging showing the highest premium at +345.
## Anchor Bidding
Anchor investors will bid for all four IPOs on 14 October before the public subscription opens on 15 October.
## Issue Structure
All four IPOs are entirely offer for sale (OFS) with no fresh issue component, meaning the companies receive no proceeds from the IPOs.
## Zetwerk's Fresh Issue
Zetwerk is the only company with a fresh issue component worth ₹ 2,830 crore to repay debt and fund acquisitions.
## Sector Focus
The IPOs cover industrial power transmission, defence electronics, cardiac medical devices and technology-led manufacturing.
## Listing Date
All four IPOs will list on 15 October with the public subscription period closing on 19 October.
## Market Reaction
The grey market premiums indicate potential listing gains ranging from 9.27% to 49.29% for the four IPOs.
## What Happens Next
The IPOs will be listed on 15 October with investors evaluating the performance of the four companies in the stock market.
## Key takeaway

Four companies including Bonfiglioli Transmissions, Tonbo Imaging, Sahajanand Medical Technologies and Zetwerk launch IPOs on 15 October with varying grey market premiums.