The grey market woke up on Sunday with five mainboard IPOs heading into their final day of bidding on Monday, 19 October 2026. Defence-electronics maker Tonbo Imaging held on to its Rs.505 premium — a whopping 72% over its upper price band — while Jio Platforms kept climbing ahead of its anchor book, which opens tomorrow. Here is your complete morning GMP roundup, movers, and the key IPO dates for the week.
IPO GMP Today (18 October 2026): Live Snapshot
All premiums below are market-reported grey market figures as of Sunday morning, 18 October 2026 (07:00 IST). GMP is unofficial, unregulated, and can change through the day — treat it as sentiment, not a guarantee.
| IPO | Price Band | GMP (Rs.) | Gain % | Est. Listing | Status |
|---|---|---|---|---|---|
| Tonbo Imaging | Rs.665–700 | Rs.505 | +72.14% | Rs.1,205 | Open (closes 19 Oct) |
| Bonfiglioli Transmissions | Rs.558–586 | Rs.132 | +22.53% | Rs.718 | Open (closes 19 Oct) |
| Jio Platforms | Rs.1,065–1,119 | Rs.235 | +21.00% | Rs.1,354 | Opens 21 Oct |
| Paras Healthcare | Rs.660–693 | Rs.96 | +13.85% | Rs.789 | Opens 21 Oct |
| Zetwerk | Rs.143–151 | Rs.7 | +4.77% | Rs.158 | Open (closes 19 Oct) |
| Sahajanand Medical | Rs.327–344 | Rs.15 | +4.36% | Rs.359 | Open (closes 19 Oct) |
| Shellz India (SME) | Rs.170–179 | Rs.0 | 0.00% | Rs.179 | Open (closes 19 Oct) |
GMP sources: cross-checked across leading GMP trackers on 18 Oct morning; figures are unofficial and subject to change.
Biggest GMP Movers
- Jio Platforms: Rs.235 (+21%) — the star mover this weekend, up from around Rs.220–221 yesterday. With India's largest IPO opening for public subscription on 21 October and the anchor book opening tomorrow (19 October), grey market interest is building fast.
- Tonbo Imaging: Rs.505 (+72%) — eased slightly from Rs.516 on Saturday evening but still the highest premium on the street by a distance. The defence-electronics IPO was subscribed 7.77x at Friday's close and shuts on Monday. See our Tonbo Imaging IPO deep-dive for the full picture.
- Sahajanand Medical: Rs.15 (+4.4%) — cooled sharply from the Rs.35–41 range seen a day earlier. The cardiac-devices IPO closes on Monday and will need a strong final-day push. Full details in our Sahajanand Medical IPO review.
- Bonfiglioli Transmissions: Rs.132 (+22.5%) — steady and slightly firmer than the Rs.126–129 range earlier in the week. The Italian parent's Rs.2,534 crore pure-OFS issue also closes on Monday. More in our Bonfiglioli IPO analysis.
- Zetwerk: Rs.7 (+4.8%) — the Rs.5,012 crore contract-manufacturing IPO remains the weak link of the October 15 wave, with the grey market pricing in barely any listing pop. Details in our Zetwerk IPO review.
Closed IPOs: Where Their GMP Stands
- HD Fire Protect: Rs.69 (+25.5%) — cooled a touch from Rs.74 yesterday but still points to a healthy debut when it lists on 21 October after a 131.73x subscription. Read our HD Fire Protect listing preview.
- Fusion CX: Rs.10–12 — allotment is finalised tomorrow (19 October), listing on 22 October. The grey market implies only a modest pop.
- Ravita Engineering: Rs.2 — essentially flat in the grey market; allotment 19 October, SME listing on 22 October.
- Vaibhav Vyapaar: Rs.5 (+9.3%) — the NSE Emerge SME IPO lists on 21 October with a small implied gain.
Key IPO Dates This Week
| Date | Event |
|---|---|
| 19 Oct (Mon) | Five IPOs close: Tonbo Imaging, Bonfiglioli, Zetwerk, Sahajanand Medical, Shellz India. Jio Platforms anchor book opens. Fusion CX and Ravita Engineering allotments finalised. |
| 21 Oct (Wed) | HD Fire Protect and Vaibhav Vyapaar list. Jio Platforms and Paras Healthcare open for subscription. Allotments for the 19 October closes. |
| 22 Oct (Thu) | Fusion CX and Ravita Engineering list. |
| 23 Oct (Fri) | Tonbo, Bonfiglioli, Zetwerk, Sahajanand, Shellz list. Jio Platforms and Paras Healthcare close. |
| 28 Oct | Jio Platforms listing (targeted). |
For Friday's closing subscription figures for all five closing IPOs, see our weekend subscription preview.
What to Watch on Monday
- Final-day subscription for Tonbo, Bonfiglioli, Zetwerk, Sahajanand and Shellz — Zetwerk (0.31x) and Sahajanand (0.83x) need strong closes.
- Jio anchor book — anchor demand on 19 October will set the tone for India's Rs.30,213 crore mega IPO. Our Jio IPO pre-issue preview covers band, lot size and the Rs.2,500 crore RIL shareholder quota.
- Paras Healthcare opens on 21 October at a Rs.96 grey market premium — details in our Paras Healthcare IPO review.
Frequently Asked Questions
Which IPO has the highest GMP today?
Tonbo Imaging leads with a Rs.505 grey market premium (+72.14% over the Rs.700 upper band), implying a listing near Rs.1,205. It closes for subscription on 19 October.
What is Jio Platforms' GMP today?
Jio Platforms' grey market premium stands at around Rs.235 (+21% over the Rs.1,119 upper band) on 18 October 2026, up from roughly Rs.220 a day earlier. Its anchor book opens on 19 October and the IPO opens on 21 October.
Is GMP an official figure?
No. GMP is an unofficial, unregulated market-reported premium and can change quickly. Never treat it as a guarantee of listing gains — always evaluate the IPO's fundamentals, financials and valuation before applying.
Which IPOs close on 19 October?
Five IPOs close on Monday, 19 October 2026: Tonbo Imaging, Bonfiglioli Transmissions, Zetwerk, Sahajanand Medical Technologies and Shellz India (SME).
When does HD Fire Protect list?
HD Fire Protect lists on BSE and NSE on 21 October 2026 after being subscribed 131.73x. Its grey market premium of Rs.69 implies a listing near Rs.340, about 25.5% above its Rs.271 upper band.
Conclusion
Sunday's grey market tells a clear story: Tonbo Imaging remains the runaway leader of the October 15 IPO wave with a 72% premium heading into Monday's close, while Jio Platforms is building momentum (+21%) ahead of tomorrow's anchor book and Wednesday's mega opening. The five-way close on 19 October will test Zetwerk and Sahajanand's final-day demand — watch the subscription numbers on Monday evening before deciding. And remember: GMP is only sentiment, so check the fundamentals before you apply.
Disclaimer: Grey market premiums quoted here are unofficial, market-reported figures as of 18 October 2026 morning and are subject to change. IPOlist.in does not recommend or endorse trading in the grey market. Please consult a registered investment advisor before making investment decisions.