10.1 Exchanges and OTC Markets

Exchanges and OTC Markets

FMP–5 is the bridge from “what is a derivative?” to “how do markets keep counterparties from blowing each other up?” Almost every later futures and clearing reading assumes you know the difference between an exchange (standardized, centrally cleared) and the over-the-counter (OTC) market (customized, historically bilateral). The exam loves margin arithmetic, netting intuition, and naming which risk a CCP actually removes.

Why Counterparty Risk Matters

When two parties enter a forward, swap, or option bilaterally, each is exposed to the other defaulting when the contract is in-the-money to the non-defaulting side. That counterparty credit risk is not the same as market risk on the underlying—though the two interact: larger market moves create larger replacement costs if the counterparty fails.

A central counterparty (CCP) becomes the buyer to every seller and the seller to every buyer through novation. After clearing, Participant A no longer faces Participant B; both face the CCP. The CCP does not eliminate market risk on open positions—it concentrates and manages counterparty risk with membership criteria, initial margin, variation margin, mutualized default funds, and default-management procedures.

Clearing Developments

Pre-crisis OTC derivatives often relied on negotiated ISDA documentation, voluntary collateral, and dealer credit lines. The GFC exposed how interconnected dealer books and thin collateralization amplified contagion. Post-crisis reforms pushed:

1. Mandatory clearing for many standardized OTC derivatives (especially interest-rate and credit products where CCPs exist).
2. Margin requirements for non-cleared OTC trades (initial and variation margin between counterparties).
3. Trade reporting to repositories for transparency.
4. Higher capital on remaining bilateral exposures.

FRM candidates should connect the policy goal—reduce systemic interconnectivity—to the micro mechanisms: netting, margin, and CCP waterfall resources.

Netting

Netting offsets amounts owed in opposite directions so that only a net obligation remains. Without netting, gross exposures look enormous; with close-out netting under a master agreement, default settles on the net mark across covered trades.

Worked netting example

Dealer D has three trades with Client C (marks from D’s perspective):

Gross receivables = 12 + 3 = $15 million; gross payables = $7 million. Net exposure = 15 − 7 = $8 million. If C defaults and netting is enforceable, D’s credit exposure is about $8 million (before collateral), not $15 million. Multilateral netting through a CCP goes further: offsets across many members reduce the system’s total settlement amounts.

Exam trap: confusing payment netting (settling same-currency payments on a day) with close-out netting (aggregating all covered trades on default). Both reduce operational or credit burden; close-out netting is the credit-risk workhorse.

Margining: Initial and Variation

Variation margin (VM) is the daily (or intraday) transfer of cash (or eligible collateral) that settles the change in contract value so that, after VM, neither side carries a large unpaid mark. Futures and cleared OTC products are typically marked to market with VM flowing through the CCP.

Initial margin (IM) is an upfront buffer sized to cover potential adverse moves over a close-out horizon (for example, a few days of stressed price moves) if a member defaults before positions can be liquidated or transferred. IM is not a fee; unused IM is returned when positions close (subject to rules).

Worked futures margin calculation

A crude oil futures contract is for 1,000 barrels. Futures price = $70/barrel. Exchange initial margin = $6,000 per contract; maintenance margin = $4,500.

Day 0: Long 2 contracts. Post IM = 2 × $6,000 = $12,000.

Day 1: Futures fall to $69. Loss per contract = 1,000 bbl × $1 = $1,000; across 2 contracts the account loses 2 × $1,000 = $2,000. Account equity = 12,000 − 2,000 = $10,000 (still above maintenance).

Day 2: Futures fall to $66. Loss per contract = 1,000 bbl × $3 = $3,000; across 2 contracts, 2 × $3,000 = $6,000. Equity = 10,000 − 6,000 = $4,000.

Maintenance for 2 contracts = 2 × $4,500 = $9,000. Equity $4,000 < $9,000 → margin call. The trader must restore the account to initial margin ($12,000) in many exchange rules—so deposit $8,000—not merely back to maintenance. (Confirm the rule stated in the question; some texts emphasize restoring to initial after a maintenance breach.)

Stock purchased on margin

Equity margin works differently from futures IM/VM but shares the idea of leverage and maintenance.

Suppose Reg-T style initial margin is 50%. Buy $40,000 of stock with $20,000 cash and $20,000 broker loan.

If stock falls to $30,000, equity = 30,000 − 20,000 loan = $10,000. Margin percentage = 10,000 / 30,000 ≈ 33.3%. If maintenance margin is 25%, still OK. If stock falls to $24,000, equity = 4,000; margin % = 4,000 / 24,000 ≈ 16.7% < 25% → margin call to restore the required equity percentage.

Exchange Versus OTC Markets

Exchange-traded derivatives: standardized contract size, grade, delivery month, tick size; trading on organized venues; clearing through a CCP; high transparency of price and (often) open interest.

OTC derivatives: customized notional, tenor, underlying, collateral terms; historically dealer-to-client or dealer-to-dealer; price discovery less centralized; documentation via master agreements.

Hybrid reality: many “OTC” products are now electronically executed and centrally cleared, so “OTC” increasingly means customization and bilateral credit for uncleared trades, not “no rules.”

OTC Risks and Mitigation

Key OTC risks beyond market risk:

• Counterparty credit risk — replacement cost on default
• Operational risk — confirmation mismatches, settlement fails
• Liquidity risk — hard to exit bespoke trades
• Legal risk — netting or collateral enforceability across jurisdictions
• Transparency / concentration risk — opaque interdealer webs

Mitigants:

1. Close-out netting under master agreements
2. Collateralization (VM and IM for uncleared)
3. Central clearing where mandated or voluntary
4. Compression services to reduce gross notional
5. Credit support annexes (CSAs) defining eligible collateral, haircuts, thresholds, and independent amounts

Collateralization Versus Exchange Margin

Exchange margin is standardized, CCP-administered, with strict schedules and default-fund backstops. OTC collateralization is contractual: parties negotiate thresholds (uncollateralized exposure buckets), minimum transfer amounts, independent amounts (functionally like IM), and haircuts on securities collateral.

Haircut example: $10 million of corporate bonds posted with a 15% haircut count as 10 × (1 − 0.15) = $8.5 million of collateral value.

SPVs in OTC Structures

A special purpose vehicle (SPV) (or SPE) is a legal entity bankruptcy-remote from a sponsor, used to hold assets or intermediate derivatives (for example, in securitizations or some structured-note programs). In OTC risk design, an SPV can:

• Isolate collateral or reference assets from the sponsor’s bankruptcy estate
• Issue notes to investors while entering hedges with dealers
• Limit recourse so investors look to SPV assets, not the full sponsor balance sheet

SPVs do not magically erase counterparty risk to the dealers hedging the SPV, nor model risk inside the structure. They reallocate legal claims. Exam questions often ask whether an SPV reduces sponsor credit exposure for noteholders—or merely relocates risk.

Synthesis

When a vignette says two dealers have large gross OTC swaps but a small net mark and full CSA collateralization, the residual risk is much smaller than gross notional suggests—if netting and collateral are enforceable. When the same notionals are cleared, focus on CCP margin, default-fund mutualization, and whether customization forced the trade to stay bilateral. FMP–5 trains you to separate market risk on the underlying from counterparty packaging—and to compute margin and netting numbers under pressure.