Derivatives Foundation interview preparation

Questions

100

Traced to a firm

29

Firms

19

Updated

September 2026

Asked at

All firmsMSMorgan Stanley4Nomura4Akuna Capital2Amundi2HSBC2PIMCO2Bank of America1Barclays1Citadel1DRW1Goldman Sachs1Jane Street1Millennium Management1Mizuho1Old Mission Capital1RCRBC Capital Markets1Scotiabank1UBS1Wells Fargo Securities1

Topic

All topicsForwards and futures10Options basics8Option pricing7The Greeks10Volatility7Option strategies9Swaps and rates7Credit derivatives4Market structure and clearing6Indian derivatives8Trading and markets9Brainteasers6Fit9

Level

AnyCoreIntermediateHard

Type

AnyTechnicalCaseMarket viewBrainteaserFit

1. 067What did post-2008 regulation actually change about the derivatives market?Market structure and clearingHardsuperdayRisk managementClearing and risk

   Say this

   Four things: standardised OTC derivatives must be centrally cleared, uncleared ones must exchange two-way margin, everything must be reported to a trade repository, and dealer capital charges for derivatives rose sharply. The combined effect was to make bespoke and long-dated derivatives much more expensive and to shrink dealer balance sheets.

   Then walk it

   1. The clearing mandate under Dodd-Frank in the US and EMIR in Europe: interest rate swaps in major currencies and index CDS have to go to a CCP. That converted the most systemic part of the OTC market into a margined, netted, reported system.
   2. Execution moved too. Swap Execution Facilities in the US and the trading obligation in Europe pushed the standardised flow onto platforms with pre-trade transparency, which compressed dealer spreads on vanilla products considerably.
   3. Uncleared margin rules put two-way initial margin on the rest, phased in from 2016. Reporting to trade repositories gave regulators — for the first time — a picture of who held what.
   4. Capital is the underrated piece. The leverage ratio, the credit valuation adjustment capital charge, and SA-CCR for counterparty exposure all raised the balance sheet cost of a derivative. That is why dealers price CVA, FVA and capital into a quote now, and why a long-dated uncollateralised swap with a corporate can be startlingly expensive.
   5. Volcker and the ring-fencing rules changed who provides liquidity. Dealers stopped warehousing risk in size, and a meaningful share of market making in derivatives migrated to non-bank firms — which is one reason prop shops and electronic market makers matter more now than in 2007.
   6. The honest assessment: the reforms genuinely reduced the risk of a bilateral credit cascade, which was the 2008 failure mode. They introduced a new one — synchronised margin-driven liquidity demand — which showed up in March 2020, in the 2022 UK LDI crisis and in European energy. Regulators fixed the problem they had and created the problem they now study, which is roughly what you should expect from any reform of this scale.

   Where candidates lose it

   Listing acronyms. The strong answer groups the changes into four buckets, names the capital piece — which most candidates omit — and closes by saying which risk was reduced and which was created. Naming LDI 2022 or March 2020 as the new failure mode is what shows judgement.

   Expect next

   • Which reform had the biggest effect on dealer pricing?
   • Why did market making migrate to non-bank firms?
   • What is the new systemic risk the reforms created?
2. 071Walk me through SEBI's margin framework and position limits for derivatives.Indian derivativesHardtechnicalIndian derivatives desksClearing and risk

   Say this

   Margin has two main layers: SPAN, which is the portfolio risk margin computed by the clearing corporation across scenarios, and exposure margin on top of it. Since 2020, margins are collected upfront and monitored at random intraday snapshots rather than end of day. Position limits are set separately for clients, trading members and foreign investors, in notional or open-interest terms.

   Then walk it

   1. SPAN margin: the clearing corporation revalues your whole portfolio under a grid of price and volatility scenarios and charges the worst case. It gives credit for genuine offsets, which is why a hedged spread costs far less margin than two outright positions.
   2. Exposure margin sits on top as an additional buffer, and short option positions attract specific additional requirements. Close to expiry, extra margins apply to in-the-money and near-the-money short positions because of settlement risk.
   3. The 2020 peak margin reform is the structural change worth knowing. Brokers must collect the full upfront margin, and compliance is checked against four random intraday snapshots each day, with penalties for shortfalls. That killed the intraday leverage brokers used to extend, which had been 20 to 50 times.
   4. Physical settlement in single stock derivatives compounds it: in the expiry week, margins on in-the-money single stock options escalate sharply, because delivery obligations arise. Retail traders regularly get caught by this.
   5. Position limits: client-level limits on index options in notional terms, market-wide position limits on single stocks expressed as a share of free float with a 95 percent trigger that bans new positions, and separate FPI category limits. Index option limits were tightened in 2025 with delta-adjusted rather than notional measurement, which was a direct response to the concentration issues the year before.
   6. Where the framework is genuinely good and where it strains: the upfront margin regime materially reduced client default risk and broker failures, which was the point. The strain is procyclicality and cost — margins rise into volatility, spreads widen, and hedging gets more expensive precisely when it is most needed. And measuring index option limits in notional rather than delta terms was an obvious gap until it was fixed.

   Where candidates lose it

   Naming SPAN and stopping. An Indian desk expects the 2020 peak-margin reform and the intraday snapshot mechanic, because it changed the whole broking business model. And the delta-adjusted position limit change is recent enough that knowing it marks you as current.

   Expect next

   • What did peak margin reporting do to the broking industry?
   • Why did SEBI move to delta-adjusted position limits?
   • How does SPAN give credit for a hedged position?

Firm tags come from public, anonymous candidate reports on Wall Street Oasis: strong signal, not sworn testimony. Firms are named as the places a question was reported, not as partners of Fin Maverick. Answers are written for this page to show how to think out loud; they are not scripts to recite.