NISM Professor

Staggered delivery period

Also written Staggered delivery period start date · Staggered delivery window

The window before expiry in which buyers and sellers holding open positions may mark an intention to give or take delivery, spreading deliveries out instead of stacking them on expiry day.

In plain language

If every delivery on a contract happened on the same morning, that morning would be chaos — and the price on the days before it would be hostage to whoever could corner the warehouses.

The staggered delivery period fixes that by opening the door early. For a few days before expiry, any seller holding an open position may say "I intend to deliver", and the exchange's system randomly allocates a buyer to receive it. Delivery then happens on T+2 at the designated delivery centre.

Because deliveries trickle out rather than arriving in a single wave, the near-month contract converges on the physical market smoothly, and there is far less room for a squeeze in the last session.

How it works

Every compulsory delivery commodity futures contract is required to have a staggered delivery period. The rule on its length changed in 2024, and the workbook records the change twice with different emphasis.

Chapter 7 (section 7.7) says SEBI's circular of 24 May 2024 reduced the staggered delivery period from the earlier five days to three days. Chapter 6 (section 6.2.4) describes the same circular as prescribing a mandatory minimum of three days for staggered delivery of any given commodity. Read together, three days is now the floor; whether a given contract runs longer is set in its specification. If an exam question quotes one of these framings, answer in its terms.

Two mechanics matter:

  • Allocation is random. The buyer matched against a delivering seller is picked by the exchange's trading system, not chosen by the seller.
  • The price used is not the futures price. For any delivery allocation during the staggered period — that is, up to one day before expiry — the settlement price is the last available spot price displayed by the exchange for that contract.

The period also anchors two other schedules. Commodity index constituents are normally rolled over before the staggered delivery period starts in the underlying futures. And Options on Futures devolve before their underlying futures enter staggered delivery, which is why those options never attract a delivery period margin.

A worked example

An RM seed contract on NCDEX expiring on the 20th. Lot size 10 MT = 100 quintals. Staggered delivery runs over the last three days.

A processor is long one lot. On E-2 a seller marks a delivery intention and the system randomly allocates it to him.

The last spot price displayed by the exchange that day is Rs 5,480 per quintal:

Delivery value = 100 quintals x Rs 5,480 = Rs 5,48,000

plus GST on the seller's tax-paid invoice. He must take delivery at the designated delivery centre on T+2.

Now notice what did not happen. The futures contract may have been quoting Rs 5,520 that afternoon. The allocation was still priced at the displayed spot of Rs 5,480, because that is the rule for staggered-period allocations. A trader who assumed the futures price would apply is short Rs 4,000 on his estimate of the invoice.

And a trader who took a fresh long on E-2 rather than squaring off has, in substance, bought 10 tonnes of mustard seed for cash — the futures market, at that point in its life, is a cash market wearing a futures label.

Why NISM asks about it

Chapter 7 (Clearing, Settlement and Risk Management), section 7.7, and Chapter 6 (Trading Mechanism), section 6.2.4. The high-frequency question is the settlement timing: the randomly allocated buyer takes delivery on T+2. Expect also the three-day rule and the link to compulsory delivery.

Common exam traps

  • T+2, not the expiry date and not the next day. This is asked almost verbatim.
  • The allocation price is the last available displayed spot price, not the futures price and not the Due Date Rate. The Due Date Rate governs expiry-day settlement, not staggered allocations.
  • The workbook states the 2024 change two ways — Chapter 7 as a reduction from five days to three, Chapter 6 as a mandatory minimum of three. They are the same circular seen from different angles.
  • Only compulsory delivery contracts must have a staggered period. Cash-settled contracts have none.
  • The buyer is allocated randomly. Sellers cannot pick a counterparty, and buyers cannot decline.
  • Index roll-over is deliberately scheduled before this period begins, so that thinning liquidity in a delivery-bound contract does not distort the index.

Check yourself

  1. 1.How does NCDEX perform the roll-over of an index constituent to the next month's futures contract?

    1. a)In one step on the expiry day of the existing contract
    2. b)Gradually over 3 days, being the first 3 trading days of the month, in equal one-third tranches
    3. c)Gradually over 2 days, with 50% impact on each day
    4. d)Gradually over 5 trading days, in equal one-fifth tranches
    Show the answer

    Answer: (b) Gradually over 3 days, being the first 3 trading days of the month, in equal one-third tranches

    NCDEX has been doing roll-over gradually to the next month contract over 3 days, being the first 3 trading days of the month, with the investment shifted by 3 equal tranches, i.e. 1/3 on each of 3 days.

    So the day-1 price change is a weighted average of the price change in the existing expiring contract at 2/3 weight and in the next maturity contract at 1/3 weight — with days 2 and 3 following the same line.

    Option (c) is MCX's method: roll-over in 2 days, with 50% impact of rollover on each day. Knowing which exchange uses which is exactly what gets tested.

    Why gradual at all? Roll-over is done carefully and gradually so that sudden blips due to roll-over or expiry do not distort index value. This problem simply does not arise in Sensex and Nifty, where continuity of the underlying stock is maintained as those are based on cash markets and not on futures markets.

    Two timing rules apply: roll-over normally happens prior to the start of the staggered delivery period, and roll-over on special days like Muhurat trading day is avoided.

  2. 2.A change to a contract's Daily Price Limit or Due Date Rate methodology falls into which modification category?

    1. a)Category A — done by the exchange with 10 days' advance notification
    2. b)Category B — done by the exchange with Product Advisory Committee and Regulatory Oversight Committee approval
    3. c)Category C — material, requiring deliberation in those committees and then SEBI permission
    4. d)It cannot be modified once a contract is launched
    Show the answer

    Answer: (c) Category C — material, requiring deliberation in those committees and then SEBI permission

    "CATEGORY C: These are MATERIAL MODIFICATIONS REQUIRING REGULATORY APPROVALS. Prior to that, any modification in this category would have to be DELIBERATED WITHIN THE PRODUCT ADVISORY COMMITTEE AND REGULATORY OVERSIGHT COMMITTEE BEFORE SEEKING PERMISSION FROM SEBI. These include CONTRACT LAUNCH CALENDAR, DPL, DUE DATE RATE / SETTLEMENT RATE, TENDER PERIOD, STAGGERED DELIVERY PERIOD START DATE for near month."

    The full three-tier structure:

    CategoryCoversApproval
    A — Non-materialSymbol, order size, tick size, strike levels, number of strikesExchange, with 10 days' notice
    BExpiry date, trading unit, delivery centre, delivery unit, quality specifications, premium/discount, open position limitExchange with PAC and ROC approval (POST FACTO)
    C — MaterialContract launch calendar, DPL, Due Date Rate, tender period, staggered delivery start dateSEBI permission after PAC and ROC deliberation

    The graduation is by how much a change can move money. A symbol or tick size affects convenience. An expiry date or delivery centre affects logistics. But the due date rate methodology determines what everyone holding an open position ultimately receives — which is why only SEBI can sanction it.

    Note the timing rule applies across the board: "Any modification can be done with AT LEAST 10 DAYS OF PRIOR INTIMATION", and "all changes relevant to CATEGORY B AND C would have to be ANNOUNCED TO THE MARKET 10 DAYS PRIOR."

    Note also the "post facto" wording in Category B — those committees approve after the exchange acts, unlike Category C where SEBI's permission comes first.

  3. 3.Under the staggered delivery mechanism, a buyer randomly assigned a delivery obligation by the exchange must take delivery:

    1. a)On the same day
    2. b)On the next day
    3. c)On the expiry date
    4. d)On T+2 day
    Show the answer

    Answer: (d) On T+2 day

    (This is a sample question from the NISM workbook.)

    "THE CORRESPONDING BUYER WILL BE RANDOMLY ALLOCATED by the trading system of the exchange, and THEY WILL HAVE TO TAKE THE DELIVERY ON THE T+2 DAY AT THE DESIGNATED DELIVERY CENTRE where the seller has delivered the commodity through TITLE TRANSFER OF OWNERSHIP OF PHYSICAL GOODS."

    The purpose of the whole mechanism: "This is to ENSURE CONFIRMATION OF DELIVERY IN THE NEAR MONTH CONTRACT AND TO KEEP THE PRICE VOLATILITY UNDER CHECK."

    Spreading deliveries over several days, rather than concentrating every obligation on expiry day, prevents a last-minute scramble in which anyone short of goods can be squeezed.

    What changed recently: ⚠️ "SEBI via circular dated MAY 24, 2024 HAS REDUCED THE STAGGERED DELIVERY PERIOD to THREE DAYS FROM THE EARLIER FIVE DAYS." And "ALL COMPULSORY DELIVERY COMMODITY FUTURE CONTRACTS ARE REQUIRED TO HAVE A STAGGERED DELIVERY PERIOD."

    The price used: "The settlement price for any delivery allocation during the staggered delivery period — i.e. UP TO ONE DAY PRIOR TO EXPIRY — WOULD BE THE LAST AVAILABLE SPOT PRICE DISPLAYED BY THE EXCHANGE." Note that it is a spot price, not the futures price, because at this stage the transaction really is a cash market transaction.

Where this is taught

Free preparation for NISM Series XVI

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