The short answer
These three get used interchangeably at dinner tables, in job interviews and in startup news, and they describe very different things. The easiest way to keep them apart is to follow one business through its life. So meet Meera.
One café chain, three roles
Meera runs twenty cafés in Pune. She started the company, and she owns all of it. That ownership is equity: a claim on the business, its profits and its future value. Right now it is private equity in the plainest sense, because nobody outside can buy a piece of it.
She wants to open fifty more cafés and needs money she does not have. A private equity fund offers, say, ₹100 crore for a quarter of the company. The fund is not buying a share on an app. It is negotiating a large stake in an unlisted company, usually with a seat on the board, and its plan is to help the chain grow for several years and then sell that stake for more than it paid. That sale is called the exit.
Years later, the exit is an IPO. Meera hires an investment bank. The bank does not buy her company to keep it. It prepares the offer documents filed with SEBI, checks the numbers, sets the price range, markets the issue to large investors and runs the book of bids, and it is paid a fee. Once the shares list, anyone with a demat account can buy one. Her company is now public equity.
| Equity (public) | Private equity | Investment banking | |
|---|---|---|---|
| What it is | Owning shares of a listed company | Owning a stake in an unlisted company | Advising companies on raising money and deals |
| Who does it | Anyone with a demat account, directly or through mutual funds | PE funds, mostly registered with SEBI as Alternative Investment Funds, and global PE firms | Investment banks, registered with SEBI as merchant bankers for public issues |
| Is the company listed? | Yes, on NSE or BSE | Usually not | Works with both |
| How money is made | Share price growth and dividends | Selling the stake later at a higher value | Fees on each deal |
| Can a retail investor take part? | Yes, from a single share | Rarely: an AIF needs at least ₹1 crore | No, it is a business, not an investment |
| Typical time frame | As long as you choose to hold | Several years per company | Months per deal |
Equity: owning a slice
Every share is a small piece of ownership. When you buy a Nifty 50 company's share, or an equity mutual fund buys it for you, you share in that company's profits through dividends and in its growth through the share price. You also share its losses. That is what makes equity the main long-term growth engine in a portfolio, and also what makes it volatile from year to year.
For most people the sensible way in is broad and cheap: a low-cost index fund rather than a handful of stock tips. Our guides on index funds versus active funds and mutual funds versus direct stocks go through that choice properly.
Private equity: owning before the public can
A private equity fund raises a pool of money from wealthy individuals, family offices and institutions, then buys significant stakes in companies that are not on the stock market. It usually takes an active role: board seats, hiring, strategy, sometimes acquisitions. The return comes at the exit, which can be an IPO, a sale to a bigger company, or a sale to another fund.
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Venture capital is the early-stage cousin. A VC fund backs young startups that may not make money yet, and expects most bets to fail and a few to pay for everything. A PE fund usually backs more established businesses with real revenue. In India, domestic funds of both kinds register with SEBI as Alternative Investment Funds: venture capital funds sit in Category I, and private equity funds typically in Category II.
For an ordinary investor, direct access is limited on purpose. SEBI sets a minimum investment of ₹1 crore per investor in an AIF, because these funds lock money up for years and are hard to value along the way. The most realistic way most people meet private equity is when a PE-backed company comes to the market through an IPO, and they decide whether to buy its shares like any other listed stock.
Pre-IPO shares are not private equity
Investment banking: the dealmaker in between
An investment bank sells expertise, not ownership. In an IPO, the banks leading the issue are called book running lead managers. They do the due diligence, draft the offer document filed with SEBI, help fix the price band, meet large investors before the issue opens, and manage the book of bids. Their fee is generally a percentage of the money raised.
The same banks advise on mergers and acquisitions, help listed companies raise more money through placements, and arrange large block trades between big investors. The common thread is that they are paid to make deals happen. They are on the other side of the table from you as an investor: their job is to get the deal done for their client, at a price their client is happy with.
Which of these can you actually use?
- Public equity: yes, today. A monthly SIP into a low-cost index fund is the simplest start. The SIP calculator shows what steady investing can grow into.
- Private equity: mostly indirectly. Unless you can commit ₹1 crore for many years, your exposure comes through listed companies, including ones that PE funds once backed.
- Investment banking: not an investment. It matters to you mainly as the reason an IPO is priced and marketed the way it is, so read the offer document rather than the advertisement.
If you are asking because of a career
Many people search this while choosing a career, so in brief. Investment banking work is deal execution: financial models, valuation, offer documents, presentations and long hours around deal deadlines. Private equity work is investing: finding and evaluating companies, negotiating, then working with the companies you own. A common route into PE in India runs through a few years in investment banking or consulting first. Neither is a shortcut to wealth for the person doing the job; both are demanding finance careers.
For a focused walkthrough, read What is venture capital in India? A practical guide.
What to do next
- If you want to own companies, start with public equity through a low-cost index fund. Read index funds versus active funds first.
- Treat any 'pre-IPO' share offer as speculation, not as private equity.
- Before applying to any IPO, read the risk factors in the offer document, not just the price band.
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