Most guides split the primary and secondary market by new shares versus old ones. A clearer test is who receives your money. In the primary market, you pay the company or its selling shareholders during a short bidding window. In the secondary market, you pay another investor, on any trading day.
In September 2026, investors bid for the NSE IPO, yet NSE received none of that money. Here is why, and when those shares changed markets.
What Is the Primary Market?
The primary market is where a security is sold for the first time. Once bidding closes, the shares list on an exchange and start trading. Common forms include:
• Initial public offer (IPO): a company's first share sale to the public
• FPO, short for follow-on public offer: a listed company sells more shares
• Rights issue: existing shareholders get first claim on new shares
• Private placement: shares go to chosen investors, not the public
In a book-built issue, the company sets a price band, investors bid within it, and the final price comes from those bids. The price is discovered, not preset.
Also Read: To understand how these offerings differ, read our guide on IPO vs FPO.
What Is the Secondary Market?
The secondary market is where existing shares change hands between investors, mainly on NSE and BSE. The company is not part of the trade. Your money goes to the investor who sold.
Prices move with demand and supply, often many times a day. Most stocks trade continuously from 9:15 AM to 3:30 PM on weekdays.
Settlement is when the shares and money change hands. Trades settle on the T+1 settlement cycle, fully in place since January 27, 2023. Buy on a Monday, and the shares reach your demat account on Tuesday, the next working day.
Difference Between Primary and Secondary Market at a Glance
Point | Primary market | Secondary market |
Who sells to you | The company or its selling shareholders | Another investor |
Who receives your money | The company (fresh issue) or selling shareholders (offer for sale) | The investor who sold |
When you can buy | Only while the issue is open | Any trading day |
How the price is set | Fixed, or discovered within a band | Demand and supply |
When shares reach you | Before listing on T+3 | T+1 after your trade |
When you can sell | After the share lists | Whenever a buyer exists |
Main risk to you | Allotment (who gets shares) is not certain; listing price can fall below issue price | The price can fall after you buy |
How One IPO Moved Between the Two Markets
The NSE IPO took bids from September 17 to 21, 2026. The price band was ₹1,700 to ₹1,785, in lots of 8 shares. The issue price landed at the top, ₹1,785, so one lot cost ₹14,280.
It was entirely an offer for sale: existing shareholders sold part of their stake, and NSE issued no new shares. The money went to those sellers. You bought in the primary market, yet the company received nothing.
With T as the closing day:
• T (September 21): bidding closed
• T+1 (September 22): allotment finalised
• T+2 (September 23): shares credited, unsuccessful bids unblocked
• T+3 (September 24): shares listed on BSE
This T+3 schedule is mandatory for public issues opening on or after December 1, 2023. From listing day, every trade in those shares was a secondary market trade.
Also Read: For insights into what to consider after shares are listed, explore our Post-IPO Trading Guide.
Primary Market and Secondary Market: How to Invest in Each
Both markets need a demat account to hold your shares. You place orders through a linked trading account.
To apply for an IPO, you approve a UPI mandate that blocks the bid amount in your bank account. Under SEBI rules (October 2026), individuals can bid up to ₹5 lakh this way, and bids up to ₹2 lakh count as retail.
If more retail investors apply than there are lots, a lottery picks who gets one, and you may get nothing. Unsuccessful bids are unblocked on T+2. On Indiabulls Securities, you apply and track allotment in the app's IPO section.
For equity trading, brokerage at Indiabulls Securities is 2.5% or ₹11 per executed order, whichever is lower, across NSE (CM, FO, CD), BSE (CM, FO) and MCX. The trade-off: the price can fall after you buy.
Conclusion
The difference between primary market and secondary market investing comes down to timing and who gets paid. Ask yourself two questions.
• Do you want shares at the issue price, and can you live with getting none? Consider an IPO.
• Do you want a specific listed stock today, at the going price? Use the secondary market.
Before you bid in an IPO, check its offer document (the prospectus) for one detail: fresh issue, offer for sale, or both. That tells you whether your money builds the business or pays its existing owners. Either way, you need a demat and trading account.