Financial Management and Business Data Analytics · Capital Market

Market Intermediaries and Depository System: NSDL, CDSL and Demat

Updated 10 October 2026 · Fact-checked

Market intermediaries are the firms that connect issuers and investors in the capital market: merchant bankers, brokers, underwriters, registrars and others. The depository system holds securities in electronic form. NSDL and CDSL are the two depositories, and investors access them through depository participants using a demat account. Learn each role and its function.

Understand Market Intermediaries and Depository System

A company that wants to raise money and an investor who wants to invest rarely meet directly. Market intermediaries stand between them. They manage the issue, sell the securities, guarantee subscription, handle applications and settle trades. Without them, a public issue or a share trade would be slow and risky.

The main intermediaries are these:

Merchant banker: manages the public issue. Work includes preparing the offer document, due diligence, pricing advice, appointing other intermediaries and coordinating allotment and listing. In India, merchant bankers must be registered with SEBI.
Stock broker: a member of a stock exchange who buys and sells securities for clients and earns brokerage. Brokers must be registered with SEBI.
Underwriter: agrees to take up the shares not subscribed by the public, up to the agreed amount, for a commission. It gives the issuer assurance that the issue will raise the needed funds.
Registrar to an issue and share transfer agent: receives applications, processes allotment, handles refunds and credit of shares, and maintains investor records.
Others: bankers to an issue (collect application money), depository participants, debenture trustees, portfolio managers and credit rating agencies.

The depository system removed paper share certificates. A depository holds securities in electronic (dematerialised) form and records transfers by book entry. India has two: NSDL (National Securities Depository Limited) and CDSL (Central Depository Services (India) Limited). Depositories are regulated by SEBI under the Depositories Act, 1996.

You cannot deal with a depository directly. You open a demat account with a depository participant (DP), such as a bank, broker or other registered entity. The DP acts as the agent of the depository. The account holds your shares much like a bank account holds money.

Benefits of demat: no risk of loss, theft, forgery or damage of certificates; faster settlement; no stamp duty on transfer in the depository form; easy transfer, nomination and pledge; lower paperwork; and automatic credit of bonus, rights and splits. Exams ask for roles, differences and benefits, so keep each point crisp.

Key rules to remember

Underwriting liability: Shortfall = Total shares offered − Total applications received (minimum nil). Gross liability = Total shares offered × Underwriter's proportion. Net liability = Gross liability − Marked applications in its favour − its share of unmarked applications (minimum nil).; Without marked applications, the total shortfall is simply shared in the underwriting ratio, as in the worked example below. Marked applications carry the underwriter's name and are credited to that underwriter; unmarked applications are shared in the underwriting ratio. Liability cannot be negative; if it works out below nil, it is nil.
Underwriting commission: Commission = Rate % × (Number of shares underwritten × Issue price); Commission is calculated on the total issue price of the shares underwritten, whether or not the underwriter has to take up any shares. Use the rate given in the question.
Demat flow: Investor → Depository Participant → Depository (NSDL / CDSL) → Issuer's records; Use this chain to answer how the depository system works.

How to solve Market Intermediaries and Depository System questions

Use this method for theory questions on intermediaries and the depository system, and for simple underwriting calculations.

1Read the verb: define, explain role, distinguish, list benefits, or calculate.
2Name the intermediary or institution and state in one line what it is.
3List its functions in points, linked to the stage of the issue or trade where it works.
4Mention SEBI registration or regulation where relevant.
5For depository questions, give the chain: investor, DP, depository, and state benefits.
6For underwriting numbers, find the shortfall = total shares offered − total applications received (minimum nil). Allocate it to the underwriters in their underwriting ratio, adjusting for marked applications if the question gives them, and take nil if any figure is negative.
7Close with one line on why the intermediary matters to investors or issuers.

Quickest way: Role-and-point shortcut

When to use it: Use it for 2-mark MCQs and short notes when time is tight.

Match the keyword: issue management = merchant banker; guarantee of subscription = underwriter; applications and allotment = registrar; trading = broker; electronic holding = depository.
For depository MCQs, remember only two depositories exist: NSDL and CDSL.
DP is the link between investor and depository; the investor does not deal directly with NSDL or CDSL.
For underwriting, compute shortfall = total shares offered − total applications received, share it in the underwriting ratio (adjust for marked applications if given), and take nil if negative.

Common mistakes in Market Intermediaries and Depository System

Saying a depository and a depository participant are the same.
Both names sound alike and both deal with demat.
Fix: A depository (NSDL or CDSL) holds securities. A DP is the agent through which you access it, like a branch.
Confusing merchant banker with underwriter.
Merchant bankers often also underwrite.
Fix: Merchant banker manages the whole issue. Underwriter only guarantees subscription for commission.
Treating registrar and broker as doing similar work.
Both handle investor-related paperwork.
Fix: Registrar handles applications, allotment and refunds in the primary market. Broker executes trades on an exchange.
Showing negative underwriting liability.
Subtracting subscription without checking if it exceeds the underwritten amount.
Fix: If subscription is more than underwritten shares, liability is nil.
Subtracting applications from each underwriter's own amount when there are several underwriters.
The single-underwriter rule is applied to every underwriter.
Fix: Find the total shortfall for the whole issue first, then share it in the underwriting ratio, adjusting for marked applications if given.
Writing demat benefits as one vague line.
Students assume it is easy.
Fix: Give at least four specific points: safety, speed, no stamp duty on transfer, nomination, easy corporate benefits.

Worked examples

Example 1

Write short notes on the role of underwriters in a public issue and state what happens if the issue is undersubscribed.

Show the solution

Define: an underwriter agrees to subscribe to the shares the public does not take up, up to the amount agreed, in return for commission.
Roles: gives assurance that the issue will raise the minimum funds, shares the risk with the issuer, and lends credibility through its assessment of the issuer.
Process: the issuer signs an underwriting agreement stating the quantity underwritten and commission.
If undersubscribed: the underwriter takes up the shortfall, up to its commitment.
If fully subscribed: the underwriter takes up nothing but still earns the commission.

Answer: An underwriter guarantees subscription for commission. If the public subscribes less than the issue, the underwriter takes the shortfall up to its commitment; if the issue is fully subscribed, it takes no shares but is paid commission.

Example 2

A company issues 1,00,000 shares of ₹100 each. Underwriter A underwrites 60,000 shares and B underwrites 40,000 shares. The public subscribes 70,000 shares in total, with no marked applications, and the underwriters share the shortfall in proportion to their underwriting. Find the shares each takes up.

Show the solution

Shortfall = 1,00,000 − 70,000 = 30,000 shares.
Ratio of underwriting = 60,000 : 40,000 = 3 : 2.
A takes 30,000 × 3/5 = 18,000 shares.
B takes 30,000 × 2/5 = 12,000 shares.
Check: 18,000 + 12,000 = 30,000.

Answer: A takes up 18,000 shares and B takes up 12,000 shares.

Example 3

Using the same issue, the underwriting commission is 2% of the issue price of shares underwritten. Find the commission payable to A and to B.

Show the solution

A: shares underwritten × issue price = 60,000 × ₹100 = ₹60,00,000.
A's commission = 2% × ₹60,00,000 = ₹1,20,000.
B: 40,000 × ₹100 = ₹40,00,000.
B's commission = 2% × ₹40,00,000 = ₹80,000.
Commission is on the amount underwritten, so it does not depend on the 18,000 and 12,000 shares actually taken up.
Check: ₹1,20,000 + ₹80,000 = ₹2,00,000 = 2% × ₹1,00,00,000.

Answer: A receives ₹1,20,000 and B receives ₹80,000 as commission.

Exam tips

For short notes, use bullet points: meaning, functions, regulation, importance.
In MCQs, look for the one-word cue such as guarantee, allotment, book entry or brokerage.
Remember both depositories by full name and abbreviation.
In underwriting sums, show the shortfall and ratio lines separately to earn step marks.
Write the demat account process as numbered steps: choose DP, submit KYC and form, sign agreement, receive account number.

Practice questions from Capital Market

Market Intermediaries and Depository System in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Market Intermediaries and Depository System: frequently asked questions

What is the difference between NSDL and CDSL?

Both are SEBI-regulated depositories that hold securities in electronic form. Investors access either one through a depository participant. For the exam, you mainly need to know that they are the two depositories in India and what they do.

What is the role of an underwriter in a public issue?

An underwriter guarantees that the issue will be subscribed by agreeing to take up unsubscribed shares up to its commitment. It earns commission for taking this risk. It also adds credibility to the issue.

How is a demat account opened?

You choose a depository participant, fill the account opening form, submit KYC documents and sign the agreement. The DP then opens the account with the depository and gives you an account number. After that, your securities are held electronically.

What are the benefits of a demat account?

It removes the risk of loss, theft or forgery of certificates and speeds up settlement. Transfers are simple, nomination is possible, and corporate benefits such as bonus shares are credited directly. It also cuts paperwork.