Primary Auctions, NDS-OM, SGL, CSGL and CCIL Settlement - Article

Introduction

A Government security transaction involves more than simply buying or selling a bond.

The complete market infrastructure must answer four different questions:

1. How is a new Government security issued?

2. Where is an existing Government security traded?

3. Where is ownership of the security recorded?

4. How are securities and money finally exchanged?

In India, important systems and institutions answering these questions include:

• e-Kuber – primary auction platform;

• NDS-OM – secondary-market trading platform;

• SGL and CSGL – Government securities holding arrangements;

• CCIL – clearing and settlement infrastructure; and

• DvP – mechanism linking delivery of securities with payment.

The current IIBF CAIIB BFM syllabus includes Securities Market Products under Module C – Treasury Products.

For CAIIB, the most important idea is to understand the flow of a transaction from issue to final settlement rather than memorising the names independently.

Learning Objectives

After studying this topic, you should be able to:

• explain how Government securities are issued through RBI auctions;

• distinguish primary and secondary markets;

• understand the role of e-Kuber;

• explain how NDS-OM works;

• distinguish SGL from CSGL;

• understand the purpose of a Gilt Account;

• explain CCIL's role as Central Counterparty;

• distinguish trading, clearing, and settlement;

• understand DvP-I, DvP-II, and DvP-III; and

• trace a Government security transaction from execution to settlement.

The Complete Government Securities Market Structure

The basic structure can be understood as:

Government needs funds

↓

RBI conducts primary auction

↓

Securities are allotted to investors

↓

Securities are held through SGL/CSGL or permitted demat arrangements

↓

Existing securities can subsequently trade in the secondary market

↓

NDS-OM or other permitted trading/reporting mechanism

↓

CCIL clearing

↓

DvP settlement of securities and funds

This sequence connects the entire market.

Primary Market

The primary market is where a Government security is issued for the first time.

When the Central Government or a State Government needs to borrow through marketable securities, RBI conducts the auction on behalf of the Government.

The money paid by successful investors goes toward the Government borrowing.

This differs from a secondary-market transaction, where an already-issued security changes hands between investors.

Basic Primary-Market Flow

Government borrowing requirement

→ Auction announcement

→ Investors submit bids

→ Auction closes

→ RBI determines successful bids

→ Securities allotted

→ Funds and securities settled

e-Kuber and Primary Auctions

Government securities auctions are conducted electronically through e-Kuber, RBI's Core Banking Solution platform.

RBI's Government Securities Market Primer states that eligible members maintaining the necessary funds and securities accounts with RBI can place bids electronically through e-Kuber. Participants without direct access may participate through eligible Primary Members according to the applicable framework.

e-Kuber therefore plays an important role in:

• receiving auction bids;

• processing auction participation;

• communicating allotments; and

• supporting settlement of primary issues.

Competitive Bidding

In a competitive bid, the investor specifies the price or yield at which it wants to acquire the Government security.

Competitive bidders therefore participate directly in price discovery.

Depending on the auction:

• bids may be submitted in yield terms; or

• bids may be submitted in price terms.

Yield-Based Auction

A yield-based auction is commonly used when a new dated Government security is issued.

Bidders quote the yield they require.

Bids are generally arranged from:

lowest yield → highest yield

because a lower yield represents a more favourable borrowing cost to the Government.

The accepted cut-off determines the auction outcome according to the specified auction method.

Price-Based Auction

For reissue of an existing security, bidding may be undertaken in price terms.

Broadly:

higher price = lower effective yield

Therefore, attractive price bids are accepted according to the notified amount and applicable auction method.

RBI may use either uniform-price or multiple-price auction methods depending on the issue announcement.

Non-Competitive Bidding

The non-competitive route allows eligible investors to participate without having to quote their own competitive price or yield.

This is particularly useful for participants that:

• want Government-security exposure;

• do not wish to undertake sophisticated price discovery; or

• participate through the prescribed retail or institutional mechanism.

Successful non-competitive allotment is made according to the applicable auction framework and competitive-auction outcome.

The key distinction is:

Primary-Market Settlement

After the auction result is finalised, successful bidders must pay the required consideration and receive the securities.

RBI's G-Sec primer specifies T+1 settlement for primary auctions of dated securities, Treasury Bills, Cash Management Bills, and SDLs/State Government Securities.

On settlement:

• the investor's funds account is debited; and

• the relevant securities account is credited.

Thus:

Auction Day = T

Settlement = T+1

unless the applicable framework for a specific issue provides otherwise.

Secondary Market

After a security has been issued, it may be bought and sold among investors.

This is the secondary market.

For example:

Bank A bought a Government bond in an auction.

Two months later, it sells the bond to Bank B.

The Government does not receive fresh borrowing proceeds from this transaction.

Instead:

Bank A → transfers existing security

Bank B → pays market consideration

The secondary market provides:

• liquidity;

• price discovery;

• portfolio adjustment;

• risk management; and

• an exit mechanism for investors.

What Is NDS-OM?

NDS-OM stands for:

Negotiated Dealing System – Order Matching

It is RBI's electronic platform for secondary-market trading in Government securities.

Current CCIL information describes NDS-OM as an anonymous electronic trading platform owned by RBI and managed by Clearcorp Dealing Systems (India) Ltd., a wholly owned subsidiary of CCIL.

It supports trading in instruments including:

• Central Government securities;

• State Government Securities;

• Treasury Bills; and

• other eligible Government securities.

Anonymous Order Matching

One of the most important features of NDS-OM is anonymity.

A participant places:

• a bid to buy; or

• an offer to sell.

The system matches compatible orders according to its matching rules.

RBI describes the matching principle broadly as:

price priority first → time priority next

Participants do not need to know the identity of the counterparty while entering the order.

Why Is Anonymity Useful?

It supports:

• transparent price discovery;

• reduced influence of counterparty identity on quoted price;

• efficient market access; and

• electronic execution.

Once the order is matched, trade information flows onward for clearing and settlement.

Straight-Through Processing

NDS-OM supports Straight-Through Processing, commonly called STP.

This means information from a matched trade can flow electronically to the clearing and settlement infrastructure without repeated manual re-entry.

Current CCIL information confirms that NDS-OM trades flow to CCIL's settlement system.

STP helps reduce:

• manual processing;

• data-entry errors;

• delays;

• reconciliation problems; and

• operational risk.

NDS and NDS-OM Are Not Exactly the Same Term

A common examination mistake is to treat NDS and NDS-OM as completely interchangeable.

NDS refers to the broader Negotiated Dealing System infrastructure historically used for dealing, reporting, auction, and settlement-related functions.

NDS-OM specifically refers to the Order Matching segment used for electronic Government securities trading.

For CAIIB, when a question asks about an:

anonymous, screen-based order-matching system for G-Secs

the answer is generally NDS-OM.

What Is an SGL Account?

SGL stands for:

Subsidiary General Ledger

An SGL account is a Government securities account maintained in electronic/book-entry form with RBI by eligible entities.

Examples of eligible institutional holders can include:

• banks;

• financial institutions;

• Primary Dealers; and

• other permitted entities.

RBI's current investment directions require banks' Government-security transactions to be undertaken through SGL or CSGL accounts under the Delivery versus Payment system, according to applicable RBI guidelines.

The important conceptual point is:

SGL generally records the institution's own Government-security holdings with RBI.

What Is a CSGL Account?

CSGL stands for:

Constituent Subsidiary General Ledger

Not every investor maintains a direct SGL account with RBI.

An eligible bank, Primary Dealer, or other permitted custodian may maintain Government securities on behalf of its customers or constituents.

Such holdings are reflected through a CSGL account maintained with RBI.

RBI's Government securities material explains that securities held by eligible institutions on behalf of constituents are reflected in CSGL accounts.

Conceptually:

SGL → own/proprietary holding

CSGL → constituent/client holding through eligible custodian

What Is a Gilt Account?

A constituent whose securities are held through a Primary Member may maintain a Gilt Account with that bank or Primary Dealer.

The investor's beneficial holding is maintained through the arrangement, while the Primary Member's corresponding constituent holdings are reflected through its CSGL account with RBI.

A simplified relationship is:

Investor / Gilt Account Holder

↓

Bank / Primary Dealer / Custodian

↓

CSGL with RBI

Therefore, do not confuse:

• the customer's Gilt Account; and

• the custodian's CSGL account with RBI.

SGL vs CSGL

Why SGL and CSGL Are Important

Government securities involve large amounts.

Electronic book-entry holdings help:

• establish ownership;

• transfer securities efficiently;

• reduce physical-document risk;

• support settlement;

• facilitate reconciliation; and

• strengthen market control.

For RBI-regulated entities, dematerialised Government-security holdings have long been central to the settlement framework.

What Is CCIL?

CCIL stands for:

The Clearing Corporation of India Limited

CCIL plays a central role in clearing and settlement of Government-security transactions.

For relevant secondary-market G-Sec trades, CCIL acts as a Central Counterparty, or CCP.

Current CCIL documentation states that secondary-market outright, market-repo, and tri-party-repo Government-security transactions handled through its securities segment are settled with CCIL acting as CCP, subject to its framework and exposure checks.

What Does Central Counterparty Mean?

Suppose:

Bank A sells securities to Bank B.

After the trade is accepted for CCP clearing, CCIL interposes itself between them through novation.

Economically, CCIL becomes:

• buyer to the original seller; and

• seller to the original buyer.

Therefore, instead of Bank A depending directly on Bank B for settlement, the settlement obligation is against CCIL according to the CCP framework.

This substantially strengthens settlement-risk management.

Clearing Is Different from Settlement

These terms are often casually used together, but they describe different stages.

Trading

The transaction is agreed or matched.

Example:

NDS-OM

Clearing

Obligations are determined.

The system establishes:

• who must deliver securities;

• how many securities must be delivered;

• who must pay funds; and

• the net obligations after applicable netting.

Settlement

The actual final exchange occurs.

• securities move; and

• funds move.

This distinction is important for case-study questions.

Multilateral Netting

Suppose a bank has many Government-security purchases and sales during one settlement cycle.

Without netting, every transaction could require a separate delivery and separate payment.

With multilateral netting, offsetting obligations are combined to determine the final net amount.

CCIL currently uses multilateral netting in its Government-security settlement framework.

The benefit is reduced:

• number of settlement movements;

• gross funding requirement;

• operational burden; and

• intraday liquidity requirement.

Delivery versus Payment

Delivery versus Payment, or DvP, links transfer of securities with payment of funds.

The basic principle is:

No securities without corresponding payment; no payment without corresponding securities.

This reduces principal settlement risk.

RBI explains three basic DvP structures.

DvP-I

Securities: Gross

Funds: Gross

Each transaction is settled individually.

DvP-II

Securities: Gross

Funds: Net

Security deliveries remain transaction-specific, but cash obligations are netted.

DvP-III

Securities: Net

Funds: Net

Both securities and funds are settled after netting.

CCIL and DvP-III

The Government securities CCP settlement framework uses DvP-III, with multilateral netting of obligations.

CCIL's current documentation confirms that Government-security settlements in its securities segment are achieved under the DvP-III mode.

This means that, instead of settling every trade separately, eligible obligations are netted before final settlement.

Where Does Settlement Finally Occur?

For Government securities settled through CCIL:

• proprietary securities obligations may settle through relevant SGL accounts;

• constituent securities obligations may settle through CSGL accounts;

• applicable demat transactions are routed through the relevant depository structure; and

• funds obligations settle through the member's RBI current account or designated Settlement Bank arrangement, as applicable.

CCIL's current securities-settlement documentation specifically describes settlement through SGL, CSGL, depository CSGL, and applicable settlement-bank/RBI accounts.

Complete Secondary-Market Example

Assume Bank A wants to sell a Government security and Bank B wants to buy it.

Stage 1: Orders

Bank A enters a sell order on NDS-OM.

Bank B enters a compatible buy order.

Stage 2: Matching

NDS-OM matches the orders according to the applicable price/time priority mechanism.

The parties did not need to choose each other directly.

Stage 3: STP

The matched transaction flows electronically for clearing.

Stage 4: CCIL

CCIL accepts the transaction according to its risk and exposure framework and acts as Central Counterparty.

Stage 5: Netting

The trade becomes part of the members' settlement obligations and applicable multilateral netting.

Stage 6: DvP-III

On settlement:

• net securities obligations are delivered; and

• net funds obligations are paid.

Stage 7: Account Movement

Relevant SGL/CSGL positions and funds accounts are updated.

This completes the transaction.

Primary Market vs Secondary Market Infrastructure

Practical Banking Application

Assume a bank receives allotment of a Government security in an RBI auction.

At Primary Issue

The bank:

• submits a bid through the applicable auction mechanism;

• receives allotment;

• pays the consideration on settlement day; and

• receives the security into its appropriate holding account.

Later

The bank decides to reduce interest-rate exposure.

It places a sell order on NDS-OM.

The trade is matched.

It flows to CCIL.

CCIL determines settlement obligations through its CCP framework.

On settlement:

• the security position is reduced; and

• the bank receives the corresponding net funds.

Thus, the same Government security can pass through:

e-Kuber → SGL holding → NDS-OM → CCIL → DvP settlement

during its life.

Why CCIL's Role Matters

Without a central counterparty, a participant may remain exposed directly to the other party until settlement.

CCIL's framework provides important risk-management benefits through:

• novation;

• margining;

• exposure checks;

• multilateral netting;

• settlement guarantee arrangements; and

• centralised settlement procedures.

CCIL states that it collects risk margins such as initial and mark-to-market margins according to the relevant segment's risk-management framework.

This does not mean settlement has zero risk, but it significantly strengthens the market infrastructure.

CAIIB Exam Focus

e-Kuber is important for primary Government-security auctions.

NDS-OM is primarily a secondary-market Government securities trading platform.

NDS-OM is anonymous and order driven.

Orders broadly match on price and time priority.

NDS-OM is owned by RBI and currently managed by Clearcorp.

NDS-OM trades can flow through STP to CCIL for settlement.

SGL and CSGL are holding/settlement-account concepts, not trading platforms.

SGL generally represents an eligible entity's own holding.

CSGL is used for securities held on behalf of constituents.

CCIL is a Central Counterparty for relevant Government-security trades.

Novation makes CCIL buyer to the seller and seller to the buyer.

Clearing is not the same as settlement.

Clearing determines obligations; settlement completes the exchange.

DvP links securities delivery with funds payment.

DvP-III nets both securities and funds.

CCIL's Government-security settlement uses multilateral netting and DvP-III.

Common Exam Traps

Trap 1: NDS-OM Is the Primary Auction Platform

Incorrect.

Government-security primary auctions are conducted through RBI's e-Kuber infrastructure.

NDS-OM is primarily associated with secondary-market trading.

Trap 2: SGL Is a Trading Platform

Incorrect.

SGL is a Government-security holding/account mechanism with RBI.

Trap 3: CSGL Means Every Customer Maintains an Individual RBI SGL Account

Incorrect.

CSGL is maintained by the eligible custodian/Primary Member for constituent holdings.

Trap 4: NDS-OM and CCIL Perform Exactly the Same Function

Incorrect.

NDS-OM facilitates trading.

CCIL performs clearing and settlement functions as CCP for relevant trades.

Trap 5: CCIL Remains Only an Observer Between Buyer and Seller

Incorrect.

Through novation, CCIL becomes the CCP—buyer to the seller and seller to the buyer.

Trap 6: DvP Means Securities Can Be Delivered Before Payment

Incorrect.

The central purpose of DvP is to link securities delivery with funds payment and reduce principal settlement risk.

Trap 7: DvP-I, II and III Differ Only in Name

Incorrect.

They differ according to whether securities and funds are settled on a gross or net basis.

Trap 8: DvP-III Nets Only Funds

Incorrect.

Under DvP-III, both funds and securities are netted.

Trap 9: Secondary Trading Gives Fresh Borrowing Proceeds to Government

Incorrect.

The Government receives funds in the primary market. Secondary-market transactions transfer already-issued securities among investors.

Trap 10: A Gilt Account and SGL Account Are Always the Same

Incorrect.

A constituent may maintain a Gilt Account with an eligible Primary Member, while the Primary Member holds constituent securities through its CSGL arrangement with RBI.

Trap 11: Anonymous Trading Means No Clearing Control Exists

Incorrect.

After trade matching, the transaction enters the clearing and risk-management framework.

Trap 12: Netting Increases the Amount of Funds Required for Settlement

Incorrect.

Netting generally reduces gross settlement obligations and therefore improves settlement efficiency.

Memory Technique

Remember the Government securities infrastructure as:

A-T-H-C-S

• A – Auction: e-Kuber

• T – Trading: NDS-OM

• H – Holding: SGL / CSGL

• C – Clearing: CCIL

• S – Settlement: DvP-III

And remember:

SGL = Self holding

CSGL = Constituent holding

For CCIL:

CCP = Counterparty Comes in the middle

The most useful CAIIB sequence is:

Issue → Hold → Trade → Clear → Settle