Indian Markets · Primary Market

The IPO Markets

How a t-shirt idea in someone's head becomes a company you can buy on your phone — the funding ladder from angel money to IPO, and what "going public" actually means. Chapters 4–5 of the Zerodha Varsity module.

Updated Aug 2026 · Read ~12 min · Chapters 4–5 of 13 · India


// the big idea

A company climbs a funding ladder — angels, then VCs, then PE, each buying a slice at a higher valuation — and an IPO is just the final rung, where it sells shares to the public for the first time. Every round trades ownership for cash, so the founder's stake shrinks in percentage while the pie it's a slice of grows far faster.

Section 1Notebook Summary

Hand-copy this. Fully derivable from the Detailed Notes below.

[+] = my addition, not in the source

1 · The funding ladder

StageInvestorWhenRisk
SeedPromoter + Angelspre-revenuehighest
Series AVCearly, has revenuehigh
Series BVC + bank debtexpandingmed
Series CPEmature, big capexlower
IPOThe publicproven, scaling—

2 · Share vocabulary

3 · Why go public

4 · IPO mechanics


Section 2Detailed Study Notes

Every giant company was once an idea nobody would fund. Infosys, a t-shirt brand, a corner bakery — each started with a founder who couldn't walk into a bank and ask for crores on a hunch. So how does a scribble on a napkin become a stock you can buy on your phone? It climbs a ladder, and the IPO is the top rung. This is the story of that climb.

4.1The ladder, one rung at a time

Varsity tells this as a story: an entrepreneur wants to make organic cotton t-shirts. Follow the money and every funding term defines itself.

SceneWho investsMoney inStakeCompany valued at
SeedPromoter + 2 angels₹5 Cr50% held by 3₹5 Cr
Series AVenture Capitalist₹7 Cr14%₹50 Cr
Series BVC + bank debt₹10 Cr + ₹15 Cr+5%₹200 Cr
Series CPrivate Equity₹60 Cr15%₹400 Cr
IPOThe public~₹125–150 Cr~16%—

Each rung is a different kind of investor, sorted by how much risk they'll stomach:

Angels

Bet at the pre-revenue stage on the founder alone. Highest risk, smallest cheques. Their money = the seed fund.

VCs

Invest once there's revenue to validate the idea. Medium risk, mid-size cheques (Series A, B).

PE

Come in at a mature stage with large capex needs. Lowest risk of the three, biggest cheques — and often a board seat.

The funding ladder: valuation climbs each rung ₹5 Cr Seed ₹50 Cr Series A ₹200 Cr Series B ₹400 Cr Series C IPO Public
₹5 Cr → ₹400 Cr: a good idea, validated by revenue, compounds.
★ TRICK · smaller slice, bigger pie

Each round the founder sells a slice, so their percentage falls. But every round also raises the valuation, so the value of what they still hold soars. The promoter's 40% was worth ₹2 Cr at seed and ₹160 Cr by Series C. Dilution isn't loss — you're trading a shrinking share of a fast-growing pie. This is the single mental model that makes startup funding click.

4.2The share vocabulary

Three terms trip up everyone. Pin them down:

Face value

The fixed denomination stamped on a share (e.g. ₹10). Shares = capital ÷ FV. So ₹5 Cr at ₹10 FV = 50 lakh shares.

Authorized

The maximum shares the company is allowed to issue — the full pie.

Issued

The slice actually handed out to owners. Always a subset of authorized; the rest is held in reserve.

Valuation is simply what the whole company is worth. When a VC pays ₹7 Cr for 14%, they're implicitly valuing the entire company at ₹50 Cr (7 ÷ 0.14). Capex is money spent to expand; debt is a loan that must be repaid with interest (finance charges) — which is exactly why founders often prefer selling equity over borrowing.

[+] my note · equity vs debt, the founder's dilemma

Every rung poses the same choice: raise equity (sell a slice, no repayment, but permanent dilution) or take debt (keep full ownership, but repay with interest whether or not the business does well). Debt is cheaper if you're confident; equity is safer if you're not. The story's company mixes both — that mix is the real art of financing a business.

Chapter 4 in one breath: businesses climb a funding ladder — angels (seed, highest risk) → VCs (early, has revenue) → PE (mature, big cheques) → IPO. Valuation rises each rung; the founder's percentage shrinks while their wealth grows.


5.1Why companies go public

An IPO — Initial Public Offer — is a company selling its shares to the general public for the first time. The main reason is the same as every earlier rung: raise money for capex. But going public carries a bundle of extra advantages:

Avoid debt

Raising equity means no interest burden eating into profits.

Spread risk

Every buyer shares the risk the promoter once carried alone.

Exit for early backers

Angels, VCs, PE can finally sell their shares in the open market.

Reward employees

ESOP shares gain a public price — the Infosys / Google wealth story.

💡 TIP · funding history as a quality signal

Why not IPO at Series A? Because early-stage companies aren't proven. When you see a company go public after rounds of credible VC and PE backing, those rounds act as a validation stamp — savvy investors already vetted it. Treat it with a pinch of salt, but a clean funding history is a genuine signal of quality.

5.2The merchant banker & the IPO sequence

A merchant banker (Book Running Lead Manager / BRLM) is the specialist firm that runs the IPO. Karvy, Axis, ICICI Securities and the like. Their job: due diligence, prepare the offer document, help set the price band, underwrite shares (agree to buy unsold ones), and run the roadshow.

Analogy · the wedding planner

The merchant banker is the company's wedding planner for its debut — vetting the guest list, printing the invitations (the DRHP), setting the budget (price band), and making sure enough people show up (underwriting). The company still gets married; the planner makes sure nothing goes wrong on the day.

The sequence, under SEBI's watch at every step:

Appoint BRLM → Register w/ SEBI → SEBI nod → DRHP → Roadshow → Price band → Book building → Listing day

The DRHP (Draft Red Herring Prospectus) is the document circulated to the public before an IPO — it carries the issue size, the number of shares, why the company wants the money and how it'll be used, full financials, management background, and the risks. It's the one document a serious IPO investor should actually read.

// why it matters

SEBI has the final word on whether a company can go public, and the DRHP is where the company must lay itself bare. Reading it is how you separate a real business from a hyped story before you put money in. "Read the DRHP" is the single most useful habit in the primary market.

5.3Book building & price discovery

Book building is how the IPO price is discovered. Instead of the company guessing one price, it announces a price band (say ₹100–₹120) and invites the public to bid a price and quantity within it. Collecting all those bids reveals what the market will actually pay. The final cut-off price is set where the most bids landed.

Analogy · the auction

Book building is a reverse auction for price honesty. Rather than the seller shouting a number, everyone quietly writes down what they'd pay. Where the crowd clusters becomes the price — harder to fake than one seller's wishful sticker.

Primary market → Listing day → Secondary market PRIMARY bid in the IPO (one-time) listing SECONDARY buy & sell daily, forever after this is "the stock market" Cut-off price is set in the primary market; every price after is set by daily supply & demand.
The IPO happens once; trading happens forever.

5.4The jargon you'll actually hear

TermMeaning
Under-subscriptionFewer bids than shares offered. Weak sentiment — a bad sign.
Over-subscriptionMore bids than shares. "2× oversubscribed" = twice the demand. Strong interest.
Green shoe optionLets the issuer release up to ~15% extra shares if oversubscribed. Also called over-allotment.
Fixed price IPOOne set price instead of a band (no book building).
Cut-off priceThe final price within the band at which the stock lists.
⚠ PITFALL · oversubscription ≠ guaranteed allotment

If an IPO is oversubscribed, you may not get all (or any) of the shares you bid for — they're rationed or allotted by lottery. Retail beginners often assume bidding = owning. It doesn't; heavy demand is exactly when your odds of a full allotment drop.

[+] my note · the "listing gain" myth

Many people chase IPOs for the listing gain — the pop on day one when a hot stock opens above its issue price. It's real, but it is not guaranteed: plenty of IPOs list flat or below issue price, handing day-one buyers an instant loss. An IPO is a business you're buying, not a lottery ticket. The DRHP matters more than the hype.

Chapter 5 in one breath: companies go public to raise capex funds (and give early backers an exit); a merchant banker runs the process under SEBI; the DRHP is the disclosure you should read; book building discovers the price; and the stock then moves from the one-time primary market into the daily secondary market.


§Quick self-check

Answer aloud before expanding.

Why is an angel investor's risk higher than a VC's or PE's?

// answer

Angels back a company pre-revenue, on the founder and idea alone — there's no proof it works, so the chance of total loss is highest. VCs enter once revenue validates the idea; PE enters at a mature stage with a track record. Later rungs are progressively safer, which is why cheques get bigger and expected returns per rupee smaller.

How can a founder's stake shrink while their wealth grows?

// answer

Each round sells a slice (percentage falls) but raises the valuation (the pie grows). The promoter's 40% was ₹2 Cr at seed and ₹160 Cr by Series C. You'd rather own 40% of a ₹400 Cr company than 100% of a ₹5 Cr one. Dilution is a trade, not a loss.

Distinguish authorized, issued, and face value.

// answer

Face value is the fixed denomination per share (e.g. ₹10); dividing capital by FV gives the share count. Authorized shares are the maximum the company may ever issue. Issued shares are the subset actually allotted to owners, with the rest held in reserve for future rounds.

Why do companies wait — why not IPO at Series A?

// answer

Early companies aren't proven, and the public can't easily assess them. Private rounds (VC, PE) fund the risky early growth and validate the business first. By IPO time there's revenue, scale, and a track record — and the funding history itself signals quality to public investors.

What is book building and why is it fairer than a fixed price?

// answer

The company sets a price band and collects bids (price + quantity) from the public; the cut-off is set where most bids cluster. This discovers what the market will genuinely pay, rather than relying on the company's own guess — a more honest, harder-to-game price.

What's the difference between the primary and secondary market?

// answer

The primary market is the one-time IPO where the company itself sells new shares and receives the money. The secondary market is the daily buying and selling between investors that happens forever after listing — the company gets nothing from those trades. "The stock market" you trade in day to day is the secondary market.

§Key takeaways

The ladder

Angel → VC → PE → IPO. Later rungs: lower risk, bigger cheques.

Dilution is a trade

Smaller slice of a much bigger pie. Percentage down, wealth up.

Why IPO

Raise capex without debt; exit for backers; reward staff; visibility.

Read the DRHP

The disclosure document — the antidote to IPO hype.

Book building

Bids across a band discover the cut-off price.

Primary vs secondary

IPO happens once; trading happens forever after.

angel > VC > PE (risk) seed fund face / authorized / issued valuation capex vs debt BRLM / merchant banker DRHP book building cut-off price green shoe (~15%) over / under-subscription primary → secondary

Section 3Microexercises

Reading proves you recognise these ideas; these prove you can use them. Try each before opening the walkthrough.

3.1Exercise 1 — Build it: valuation & dilution

// your task
round.txt
A founder owns 100% of a company.
A VC invests 8,00,000 for a 20% stake.

1) What valuation does the VC imply for the
   whole company (post-money)?
2) After the round, what % does the founder own?
3) In rupees, what is the founder's stake worth
   now vs before the round?

Expected: 1) ₹40,00,000 · 2) 80% · 3) ₹32,00,000 now (was ₹0 realisable / a company with no outside value before).

Show the full walkthrough

Step 1 — implied valuation. If ₹8,00,000 buys 20%, the whole company is worth that stake divided by its fraction:

8,00,000 / 0.20 = 40,00,000

This is the post-money valuation — the company's value including the fresh cash.

Step 2 — founder's new %. The VC took 20%, so the founder is diluted to 80%.

Step 3 — value of the founder's stake. 80% of ₹40,00,000:

0.80 * 40,00,000 = 32,00,000

Why it matters: the founder went from 100% to 80% ownership — yet now holds a stake an outside investor values at ₹32 lakh, backed by real cash in the company. That's the smaller-slice-bigger-pie trick in raw numbers.

3.2Exercise 2 — Diagnose it: the IPO myths

// your task

A friend is about to apply for a "hot" IPO. Find every mistaken belief and correct it.

ipo_hype.txt
1. It's 30x oversubscribed, so I'm sure to get
   all the shares I bid for.
2. IPOs always pop on listing day, so it's free
   money.
3. I don't need to read anything -- the price
   band already tells me it's a good company.
4. Once I buy in the IPO, the company gets my
   money every time I later sell the share too.

Expected: all four are wrong; name the correct mechanism for each.

Show the full walkthrough

1 — "30x oversubscribed → I get everything." Backwards. Heavy oversubscription means shares are rationed or allotted by lottery — the more oversubscribed, the lower your odds of a full allotment. You might get a fraction, or nothing.

2 — "IPOs always pop → free money." False. Listing gains happen but aren't guaranteed; many IPOs list flat or below the issue price, an instant loss for day-one buyers. An IPO is a business, not a guaranteed pop.

3 — "price band tells me it's good." No. The band only says what range the company hopes to sell at. Quality lives in the DRHP — financials, risks, use of funds, management. Read that, not the band.

4 — "company gets my money on later sales too." Only the primary sale (the IPO) sends money to the company. Every trade afterward is in the secondary market, between investors — the company receives nothing from it.

Why it matters: each myth maps to a specific concept from these chapters — allotment, listing risk, the DRHP, and primary-vs-secondary. Spotting them is what turns IPO excitement into IPO judgement.

valuation = cheque / stake post-money dilution = trade not loss oversubscribed → rationed listing gain not guaranteed read the DRHP company paid only in primary

Source: Zerodha Varsity — Introduction to Stock Markets, Ch. 4–5. [+] = my addition. Next → Sizing Up an IPO (practical companion).