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NISM-Series-X-A: Investment Adviser (Level 1) · Securities Market Segments

Secondary Market: Trading, Clearing and Settlement in India

Updated 11 October 2026 · Fact-checked

The secondary market is where investors trade existing securities on exchanges. A trade is matched on the exchange, then the clearing corporation works out obligations and guarantees the trade. Settlement follows on T+1, meaning the next working day after the trade day. Depositories hold shares in demat form and move them between accounts.

Understand Secondary Market: Trading, Clearing and Settlement

The secondary market is where already issued securities are bought and sold between investors. The company does not receive money from these trades. The stock exchange gives a screen-based, anonymous platform where buy and sell orders meet.

A trade has three stages. Trading: orders are matched on the exchange by price and time priority. Clearing: the clearing corporation (for example NSE Clearing or Indian Clearing Corporation) works out what each member must pay or deliver. Settlement: money and securities actually change hands.

The clearing corporation is separate from the exchange. The exchange runs the trading platform. The clearing corporation becomes the counterparty to every trade (novation), so it guarantees completion. It also collects margins and runs a settlement guarantee fund to manage default risk.

Indian equity trades settle on a T+1 rolling cycle. T is the trade day. Settlement happens on the next working day (excluding weekends and exchange holidays). Securities are held in dematerialised form by the two depositories, NSDL and CDSL. You hold your demat account with a depository participant (DP), which acts as the agent of the depository. The depository does not trade or give advice. It only holds and transfers securities.

Intermediaries include stock brokers (trading members), clearing members, DPs, custodians and registrars. A broker executes your orders. A custodian usually serves institutions and holds their securities.

Key formulas to remember

Settlement day
Settlement day = T + 1 working day
T is the trade day. Weekends and exchange holidays do not count as working days.
Three stages of a trade
Trading → Clearing → Settlement
Exchange handles trading. Clearing corporation handles clearing and guarantee. Depository and banks handle the movement of securities and funds.
Net obligation of a member
Net funds obligation = Total sale value − Total purchase value (netted across all securities)
Positive means the member receives funds. Negative means the member pays. Funds are netted across securities as a single value. Securities are netted separately for each security, in quantity (number of shares), not in value. Clearing works on net positions.
Order price rules
Market order: executes at best available price. Limit order: executes at limit price or better.
A limit buy executes at or below the limit. A limit sell executes at or above it.
Depository roles
Investor → DP → Depository (NSDL or CDSL)
You deal with the DP. The DP is linked to the depository. The depository records ownership electronically.

How to solve Secondary Market: Trading, Clearing and Settlement questions

Use this method for any question on trading, clearing and settlement.

  1. 1Identify the stage the question asks about: trading, clearing or settlement.
  2. 2Name the entity linked to that stage: exchange, clearing corporation, depository, DP, broker or custodian.
  3. 3If the question has dates, count T+1 in working days. Skip weekends and exchange holidays.
  4. 4If it is about orders, decide whether price or time condition applies: market, limit, stop loss, IOC, day order.
  5. 5If it involves amounts, compute net obligation as sales minus purchases.
  6. 6Remove options that give the wrong entity a role, such as the depository guaranteeing trades.
  7. 7Pick the option that fits the exact wording, such as 'only', 'primary' or 'except'.

Quickest way: Entity-to-role matching

When to use it: Use for theory MCQs asking who does what.

  1. Exchange = platform and order matching.
  2. Clearing corporation = novation, netting, margins, guarantee.
  3. Depository = holds securities electronically. DP = your access point.
  4. Broker = executes orders. Custodian = institutional safekeeping.
  5. For settlement day, add one working day to the trade day.

Common mistakes in Secondary Market: Trading, Clearing and Settlement

  • Saying the stock exchange guarantees settlement.

    Exchange and clearing corporation are treated as one body.

    Fix: Guarantee and risk management belong to the clearing corporation, which becomes counterparty to trades.

  • Counting Saturday or Sunday as a settlement day.

    Students add one calendar day.

    Fix: T+1 means one working day. A Friday trade settles on Monday unless Monday is a holiday.

  • Thinking you hold a demat account directly with NSDL or CDSL.

    The depositories are well known by name.

    Fix: You open the account with a DP, which is registered with a depository.

  • Believing a limit order always executes.

    Limit orders are confused with market orders.

    Fix: A limit order executes only at the limit price or better. A market order gives priority to execution over price.

  • Assuming a company receives money from secondary market trades.

    Primary and secondary markets get mixed up.

    Fix: Money moves between investors. The issuer receives funds only in the primary market.

Worked examples

Example 1

A trade is executed on a Thursday. There is no holiday that week or the next. On which day does it settle under the T+1 cycle?

Show the solution
  1. The trade day T is Thursday.
  2. T+1 means one working day after T.
  3. The next working day is Friday.

Answer: Friday.

Example 2

On a day a clearing member's total purchases across securities are ₹8,50,000 and its total sales are ₹6,20,000. These are netted for funds. What is the net funds obligation, and who handles the netting?

Show the solution
  1. Funds are netted across securities: net funds obligation = total sale value − total purchase value.
  2. = ₹6,20,000 − ₹8,50,000 = −₹2,30,000.
  3. A negative value means the clearing member must pay.
  4. Securities, by contrast, are netted per security in quantity. That is a separate calculation.
  5. Netting of member obligations is done by the clearing corporation.

Answer: The clearing member pays a net ₹2,30,000. The clearing corporation determines it.

Exam tips

  • Learn the exact role split between exchange, clearing corporation and depository. Questions often swap them.
  • For settlement date questions, check for weekends and holidays before answering.
  • Know the order types and what each guarantees: price or execution.
  • Negative marking is 25% of the marks assigned to the question. NISM-Series-X-A has both 1-mark and 2-mark questions, so a wrong answer costs 0.25 mark on a 1-mark question and 0.5 mark on a 2-mark question. If you can eliminate two options and are left with two plausible ones, guessing pays. On a 1-mark question: 0.5 × 1 − 0.5 × 0.25 = 0.375. On a 2-mark question: 0.5 × 2 − 0.5 × 0.5 = 0.75. The guess pays off only after elimination, so do not guess blindly.
  • Remember a DP is the investor's link to NSDL or CDSL.

Practice questions from Securities Market Segments

Secondary Market: Trading, Clearing and Settlement in other exams

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

Secondary Market: Trading, Clearing and Settlement: frequently asked questions

What is the T+1 settlement cycle?

It is a rolling cycle where a trade is settled on the next working day after the trade day. Funds and securities are moved on that day. Weekends and exchange holidays are excluded.

What is the difference between a clearing corporation and a stock exchange?

The exchange provides the trading platform and matches orders. The clearing corporation works out obligations, collects margins and guarantees settlement by becoming counterparty to trades.

What do NSDL and CDSL do?

They are the two depositories in India. They hold securities in electronic form and transfer ownership on settlement. Investors reach them through depository participants.

Does the depository execute my trades?

No. Your broker places the trade on the exchange. The depository only records and transfers securities after settlement.