NISM Series XVI common mistakes
NISM Series XVI · Understand the traps and how to avoid them.
Treating 'commodity derivatives' as a single category and answering questions about forwards, futures, and options interchangeably, so a question about margin or default risk gets the forward-market answer instead of the futures-market answer.
Candidates learn the definitions in a block and never build a comparison table, so under time pressure they default to the term they saw most recently rather than reading which instrument the stem names.
What to do instead
Build a one-page comparison grid with rows for forwards, futures, and options, and columns for counterparty risk, margining, standardisation, settlement, and who bears default. Before answering, underline the instrument named in the stem and check the grid.
Confusing the roles of the spot market, the ready delivery market, and the futures market when a question asks where price discovery happens or which market settles on T+0/T+2 versus on expiry.
The terms overlap in everyday language, and candidates memorise definitions without linking them to settlement timing or to who participates in each market.
What to do instead
For each market type, write the settlement timing, the typical participant, and one concrete example commodity. Then practise stems that ask 'which market' and answer by matching on settlement timing first.
Getting the direction of contango and backwardation reversed, or applying the wrong one when a question describes storage cost versus convenience yield.
Candidates memorise the words without anchoring them to the futures curve shape, and the two terms are easily swapped because both describe a non-flat curve.
What to do instead
Anchor with a mental image: contango means the far contract is priced higher, which happens when carry cost (storage, insurance, financing) exceeds convenience yield. Backwardation is the reverse. Draw the curve for each case and redraw it from memory before the exam.
Calculating option payoff and profit without separating premium from intrinsic value, or confusing the buyer's and writer's position when the stem asks for net cash flow.
Candidates compute intrinsic value and stop, forgetting that the premium was paid or received at inception, and they lose track of which side of the trade the question describes.
What to do instead
Always write the full cash-flow timeline: premium at t=0, payoff at expiry, then net. State in one line 'buyer pays premium, writer receives it' before computing, and check the sign of the answer against who is long and who is short.
Misreading whether a hedge requires a long or short futures position, then selecting the correct-sounding but wrong answer for a hedging example such as a producer protecting against a price fall.
Candidates focus on the arithmetic of the hedge and skip the step of identifying the underlying exposure, so they pick the position that would profit from the feared move rather than the one that offsets it.
What to do instead
Use a fixed two-step routine: first state the exposure ('I will sell later, so I lose if price falls'), then choose the futures position that gains when price falls, which is short. Apply the routine to producers, consumers, and exporters separately.
Answering margin questions with a single number, ignoring initial margin, maintenance margin, variation margin, and the mark-to-market call sequence across days.
Candidates memorise the definitions but never work a multi-day margin table, so they cannot tell which margin is topped up and which is a daily cash transfer.
What to do instead
Work at least five multi-day margin scenarios by hand, tracking the margin balance, the mark-to-market debit or credit, and the top-up to initial margin. Label each figure with its margin type as you write it.
Confusing the clearing corporation's role with the exchange's role, for example saying the exchange guarantees settlement or that the clearing member handles client pay-in.
The functions are described in adjacent chapters and share vocabulary such as 'guarantee', 'settlement', and 'member', so the entities blur together.
What to do instead
Map the chain explicitly: client to trading member to clearing member to clearing corporation, and write one responsibility per link. For any question, locate the entity in the chain before choosing an answer.
Mixing up the regulator's powers and the scope of its mandate, such as attributing securities-market functions to the commodity derivatives regulator or vice versa, or misstating which body handles warehousing and delivery infrastructure.
The regulatory architecture has multiple bodies with overlapping-sounding mandates, and candidates learn names without learning each body's specific statutory function.
What to do instead
Create a regulator table with columns for market regulated, key powers, and one distinctive function. Test yourself by covering the 'key powers' column and reciting it. Pay particular attention to bodies that regulate intermediaries versus those that regulate exchanges.
Treating client protection rules as generic ethics and answering from intuition, rather than applying the specific requirements on client funds segregation, know-your-client, risk disclosure, and grievance redressal.
These topics read as common sense, so candidates skim them and then pick the most reasonable-sounding option instead of the one matching the prescribed process or timeline.
What to do instead
Convert each protection rule into a fact card with the exact obligation and any prescribed document or timeline. Memorise the cards verbatim and, in the exam, choose the option that matches the prescribed process even if another option sounds more sensible.
Skipping numerical practice on position limits, open interest, and margin adequacy, and instead reading worked examples passively, so calculation questions consume disproportionate time or produce sign and unit errors.
Reading a solved example creates a false sense of fluency; the candidate recognises the method but has never executed it under time pressure with unit conversions such as lots, tonnes, and contract multipliers.
What to do instead
Do timed calculation sets of ten questions, writing every unit at each step and converting to a common unit before dividing. Review errors by category (unit, sign, formula) rather than re-reading the chapter.