Bigshare Services Pvt Ltd: Complete Investor Guide for Shareholders

What Is Bigshare Services Pvt Ltd

Bigshare Services Pvt Ltd is a Category I SEBI-registered Registrar and Transfer Agent (RTA) incorporated in 1994. The company is headquartered at 1st Floor, Bharat Tin Works Building, Opp. Vasant Oasis Apartments, Makwana Road, Marol, Andheri (East), Mumbai – 400059. Their investor-facing portal is bigshareonline.com.

They hold a SEBI registration as an RTA, which means they are authorised to maintain records of shareholders on behalf of listed companies — folios, addresses, bank mandates, nominee details, and corporate action processing. Over the past three decades they have built a particular reputation in the IPO space, acting as registrar for a large volume of mainboard and SME IPOs listed on BSE and NSE.

As of 2025–26, Bigshare services are estimated to cover over 800 client companies across various industries — manufacturing, finance, real estate, and services. On any given IPO listing day you will often find Bigshare named as the registrar in the offer document.

IPO Registrar vs Ongoing RTA — The Confusion You Need to Understand

This is the single most common source of confusion investors face with Bigshare. When a company comes out with an IPO, it appoints an RTA as the IPO registrar to handle the allotment process — collecting applications, processing ASBA blocks, finalising allotment on a lottery basis if oversubscribed, and initiating refunds. Bigshare is very frequently appointed in this role.

But once the IPO is over and shares are listed, the company may appoint either the same RTA or a different one to handle ongoing shareholder services — folio maintenance, dividend payments, KYC updates, share transfers, and so on. Many companies that used Bigshare as their IPO registrar switch to KFintech (formerly Karvy), MUFG Intime, or Purva Sharegistry for post-listing services.

So if you are trying to update your address or get a duplicate share certificate two years after an IPO, you need to check who the current RTA is — not just who handled the original IPO. The company's latest annual report or BSE/NSE filing will tell you the current RTA. You can also check the company's website under the Investor Relations section.

Common Situations When Investors Contact Bigshare Services

Based on the types of queries we receive regularly at Investor Helpdesk, here are the main situations where Bigshare is the right contact:

IPO Allotment Status Query

You applied for an IPO where Bigshare is the registrar and want to know whether you were allotted shares. This is the most common reason investors look up Bigshare's details.

IPO Refund Not Received

Your ASBA block has been released but the refund amount has not appeared in your account, or you got no shares and no refund credit. This can happen if there is a mismatch in your bank account linked to the application.

Shares Not Received After IPO

You were allotted shares in the IPO but they have not shown up in your demat account. This is often a demat account number mismatch or a DP-level delay, but Bigshare can confirm allotment from their records.

Folio Number Query

You hold physical shares in a company whose RTA is Bigshare and need your folio number to proceed with a demat conversion or transmission. Bigshare can retrieve this using your name and PAN.

Ongoing Shareholder Services

For companies where Bigshare remains the RTA post-listing — KYC updates, nominee registration, dividend mandate changes, address updates, and physical-to-demat conversion requests.

Using the Bigshare Investor Portal (bigshareonline.com)

The Bigshare investor portal at www.bigshareonline.com is your primary self-service option. It is functional but not the most user-friendly portal — you need to know what you are looking for.

Checking IPO Allotment Status

1. Go to bigshareonline.com and look for the "IPO Allotment Status" or "Public Issue" section on the homepage.
2. Select the IPO name from the dropdown list.
3. Enter your PAN number or application number (the 16-digit number from your ASBA form or bank acknowledgement).
4. The portal will display whether shares were allotted, the number of shares, and the folio/demat credit status.

If the IPO is very recent (within 3–4 days of allotment date), the status may not yet be updated. Wait 24–48 hours after the official allotment date before checking.

Checking IPO Refund Status

The portal also shows refund status. If you were not allotted shares, the portal will indicate when the ASBA block was released. If you were partially allotted, it shows the unblocked refund amount. The actual credit to your bank account depends on your bank's processing time — typically 2–4 working days after the unblock date.

Folio Statement and Account Details

For companies where Bigshare is the ongoing RTA, you can log in to the investor portal to view your folio statement, check dividend payment history, and update certain details online. You will need your folio number and registered PAN to access this section.

How to Contact Bigshare Services

Bigshare does not publish a single toll-free helpline number prominently. These are the verified contact details:

• Investor helpline: +91-22-6263 8200
• Email: investor@bigshareonline.com
• Office address: 1st Floor, Bharat Tin Works Building, Opp. Vasant Oasis Apartments, Makwana Road, Marol, Andheri (East), Mumbai – 400059
• Portal: www.bigshareonline.com

When emailing, include your PAN number, folio number or application number, company name, and a clear description of the problem. Attach supporting documents. Bigshare typically acknowledges email queries within 3–5 working days but resolution can take longer.

For physical submissions — whether KYC forms, DRF, or transmission requests — send documents by registered post or Speed Post to the Mumbai address above. Retain the tracking number.

KYC Update at Bigshare Services

SEBI has mandated KYC compliance for all physical folios through a set of ISR (Investor Service Request) forms. If your shares in a Bigshare-managed company are in physical form, you need to ensure these details are current: PAN, contact number, email address, bank account, signature, and nominee information.

Forms Required

• ISR-1: For registering or updating PAN, email, mobile number, and bank account
• ISR-2: For bank account changes specifically (requires cancelled cheque or bank attestation)
• ISR-3: For nominee registration, change, or cancellation
• Form SH-13: Nomination form under Companies Act

Download these forms from bigshareonline.com under the "Downloads" or "Forms" section. Fill them in black ink, sign as per share certificate, and attach self-attested copies of PAN card, Aadhaar, and cancelled cheque. Submit the originals (the form itself must be original — photocopies of the form are not accepted) to Bigshare's Mumbai office.

Processing Timeline

SEBI requires RTAs to process KYC update requests within 30 working days of receiving complete documentation. Bigshare's typical turnaround is 15–30 working days. If you have not received a confirmation letter within 35 working days of dispatch, follow up at investor@bigshareonline.com with your Speed Post tracking number as proof of delivery.

Share Transmission via Bigshare (When a Shareholder Dies)

If you are a legal heir or nominee of a deceased shareholder whose shares are held in a Bigshare-managed folio, you need to initiate a transmission request. The documents required depend on whether there is a probated Will or the estate passes under intestate succession.

Documents Typically Required

• Transmission request letter (available on bigshareonline.com)
• Death certificate (notarised copy)
• Legal heir certificate or succession certificate (for large estates, typically above Rs 2 lakh in value)
• Indemnity bond executed on stamp paper of appropriate value
• Affidavit from legal heirs
• KYC documents of the claimant (PAN, Aadhaar)
• Original share certificates (if in physical form)
• Copy of the Will (if applicable) and probate order (if estate is contested)

Bigshare processes transmission requests within 30 days of receiving the complete set of documents. Smaller estates (below the threshold set by SEBI, currently Rs 2 lakh) may be processed with a simplified affidavit instead of a succession certificate. For detailed help with this process, see our Share Transmission to Legal Heir service.

Physical to Demat Conversion via Bigshare

If you hold physical share certificates in a company whose RTA is Bigshare, you can convert them to demat form through the standard DRF (Demat Request Form) process. This is a two-step process involving your Depository Participant (DP) and Bigshare.

Step-by-Step Process

1. Open a demat account with a DP registered with NSDL or CDSL if you do not already have one.
2. Obtain the DRF (Demat Request Form) from your DP — do not download from the RTA's website.
3. Fill in the DRF with your folio number, share certificate details (distinctive numbers, certificate numbers), and demat account details.
4. Defacement: Before submission, write "Surrendered for Dematerialisation" across the face of each share certificate. Do not obliterate the certificate number or distinctive numbers.
5. Submit the filled DRF along with the original share certificates to your DP (not directly to Bigshare).
6. Your DP submits the request electronically to the depository, which then sends confirmation to Bigshare.
7. Bigshare verifies the certificates against their records. If everything matches, shares are dematerialised into your account within 15–30 working days.

The most common reasons for rejection at Bigshare's end are: signature mismatch on the DRF versus the company's folio records, distinctive numbers not matching the company's register, or the shares being already under a lien or dispute. For a complete walkthrough, see our Physical Shares to Demat service page.

Companies Using Bigshare as Ongoing RTA

Bigshare manages shareholder records for a significant number of listed companies on BSE and NSE. Some examples include Hester Biosciences, Amrutanjan Health Care, Arman Financial Services, Meghmani Organics, Bharat Bijlee, Saurashtra Cement, and a wide range of SME-listed entities on BSE SME and NSE Emerge platforms.

The SME IPO segment in particular sees Bigshare as the most frequently appointed registrar. If you hold shares in an SME-listed company and need RTA services, there is a reasonable chance Bigshare is your point of contact.

To confirm whether Bigshare is your company's current RTA, check the company's BSE or NSE filing page, look at the annual report's Shareholder Information section, or call Bigshare directly and give them the company name and your PAN — they can confirm whether your folio is in their system.

Bigshare vs MUFG Intime vs KFintech — Which One Has Your Shares?

A question we get frequently: "I know my shares are with some registrar but I can't figure out which one." There are four major RTAs handling the bulk of Indian listed companies:

• KFintech (formerly Karvy Fintech): One of the largest RTAs in India, managing companies like Reliance Industries, Infosys, HDFC Bank, and many others. Check at kfintech.com/investorservices.
• MUFG Intime India Pvt Ltd (formerly Link Intime): Also a large Category I RTA, managing Tata Group companies, Wipro, and many blue chips. Check at linkintime.co.in.
• Bigshare Services: Particularly strong in mid-cap and SME segment. Check at bigshareonline.com.
• Purva Sharegistry: A smaller RTA handling specific companies. Check at purvashare.com.

The fastest way to identify your company's RTA is to look up the company name on BSE India (bseindia.com) or NSE India (nseindia.com), go to the company's corporate information page, and it will list the Registrar and Transfer Agent. Alternatively, the annual report's back pages always contain the RTA name and address.

What to Do If Bigshare Is Not Responding

RTAs are regulated by SEBI and are required to respond to investor requests within specified timelines. If you have contacted Bigshare through email or post and received no response after 15–20 working days, escalation is your right.

Step 1: Send a Reminder

Email investor@bigshareonline.com again with your original complaint date, any reference number received, and the subject line "REMINDER — Unresolved Query dated [date]". Copy the company's Compliance Officer (their email is in the company's annual report or on BSE/NSE filing page).

Step 2: File on SEBI SCORES

SEBI SCORES (SEBI Complaint Redress System) at scores.sebi.gov.in is SEBI's official complaint portal. Register and file your complaint against "Bigshare Services Pvt Ltd" as the entity. SEBI forwards the complaint to Bigshare and requires them to respond within 21 days. If they do not, SEBI can take regulatory action.

Step 3: Use SEBI SMART ODR

SEBI's Online Dispute Resolution platform at smartodr.in is the newer mechanism introduced for resolving investor disputes with market intermediaries. You can initiate conciliation or arbitration here if SCORES resolution is unsatisfactory. This platform is particularly useful for monetary disputes — delayed refunds, unpaid dividends, and similar issues.

Step 4: Write to SEBI Directly

If SCORES does not resolve the matter, you can write to SEBI's Office of Investor Assistance and Education (OIAE) at SEBI Bhavan, Plot No.C4-A, G Block, Bandra Kurla Complex, Bandra (East), Mumbai – 400 051, or email sebi@sebi.gov.in with your SCORES complaint number as reference.

If you need help putting together your escalation documents or are unsure how to proceed, our IEPF Claim Assistance team at Investor Helpdesk has experience dealing with RTA escalations and can guide you through the process.

Common Problems with Bigshare Services and How to Fix Them

IPO Refund Delayed

First check the ASBA block status on your net banking — if the bank has not yet released the block, the issue is with your bank, not Bigshare. If the block is released but money has not credited after 5–7 working days, email Bigshare with your application number, PAN, IFSC, and bank account number. Request confirmation that the refund was processed and the exact date of credit instruction.

Wrong Bank Account for IPO Refund

This is more serious. If you filled in the wrong bank account details in your IPO application, refund to the wrong account may have already happened. In ASBA applications, the refund goes back to the account that was blocked — so there is usually less risk. But for non-ASBA applications (now largely discontinued), manual errors are possible. Contact Bigshare immediately at investor@bigshareonline.com with the correct bank details and request confirmation of where the refund was sent.

Allotment Not Received in Demat Account

This can happen due to an incorrect demat account number in the IPO application. Bigshare will have credited shares to the demat account as mentioned in the application form. Check your application acknowledgement and compare it to your actual demat account number. If there is a mismatch, contact both Bigshare and your DP immediately — the shares may be in a suspense account and can be recovered with proper documentation.

Physical Share Certificate Not Recognised by Bigshare

Sometimes an investor submits a DRF and Bigshare rejects it, citing that the certificate numbers are not found in their records. This can happen for companies that went through mergers, name changes, or demergers — the original certificates may be under a predecessor company's folio. You will need to provide the transfer history and trace the origin. Our Lost Share Certificate service can help trace and verify old certificate records.

Name Mismatch in Folio Records

If your name in Bigshare's records does not match your current name (due to marriage, spelling error on the original application, or a minor variation), you need to submit a name correction request. Submit Form ISR-1 along with proof of name change (marriage certificate, gazette notification, court order) and identity documents. For help with this, see our Share Name Correction service.