Foreign exchange

Exorbitant Privilege Explained Exorbitant privilege is the seigniorage and borrowing advantage the US enjoys as issuer of the world's dominant reserve currency. Explained with origins and limits.

Exotic Currency Pair An exotic currency pair pairs a major currency (usually the US dollar) with a currency from a smaller or emerging-market economy. Examples include USD/BRL, USD/MXN, and AUD/SGD. Exotics are illiquid and trade with wide spreads.

Exotic Currency Pairs Currency pairs involving emerging-market or less-traded currencies, characterised by wide spreads, thin liquidity, and elevated political risk.

Exotic FX Option An exotic FX option is a non-standard currency option with features beyond the simple call-or-put structure of vanilla options. Examples include barrier options, lookbacks, and Asian options. Exotics are cheaper but more complex than vanilla options.

Exposure Limit A broker-imposed maximum position size per currency pair, designed to limit counterparty risk and prevent excessive losses.

Fear of Floating The empirical pattern in which developing countries that officially declare free-floating currencies intervene heavily to limit exchange rate volatility.

Fear of Floating in Emerging Markets: Causes and Costs Why emerging markets with floating exchange rates intervene heavily in practice, driven by liability dollarization and balance-sheet vulnerabilities.

Fixed Exchange Rate A fixed exchange rate is an exchange-rate system in which a country's currency is pegged to another currency or to a basket of currencies at a constant ratio, enforced by the central bank. Most fixed regimes have been abandoned; they remain in some small economies.

Fixing Time Benchmark reference time for daily FX settlement, determining spot rates for contracts and fund valuations.

Floating Exchange Rate A floating exchange rate is an exchange-rate system in which the currency's value is determined by market supply and demand, with minimal central-bank intervention. Most major currencies float; this is the default modern regime.

Foreign Exchange Reserve Accumulated foreign assets held by a central bank for market stabilization and sovereign backing.

Forex Cross Rate Calculation: How Non-USD Pairs Are Priced Learn how forex cross rates like EUR/JPY are calculated from USD pairs using the triangular arbitrage relationship.

Forex Execution Modes: Instant vs Market Execution Forex execution modes determine how broker orders fill: instant execution allows requoting while market execution fills at the available price with no broker discretion.

Forex Lot Size Explained Forex lot sizes (standard, mini, micro, nano) define contract volume and directly determine how much a pip move gains or loses. Understanding lot size is essential for position sizing and risk management.

Forex Margin Call: How It Happens with an Example Step-by-step walkthrough of a forex margin call: how leverage amplifies losses and what happens when required capital falls below the threshold.

Forward Exchange Rate A forward exchange rate is the price agreed today for the exchange of two currencies at a future date, typically one month to one year ahead. It reflects the spot rate plus an adjustment for the interest-rate differential between the two currencies.

Forward Premium and Discount Whether a currency's forward rate is priced above or below spot, reflecting interest-rate differentials.

Free Margin Available capital remaining after accounting for used margin, showing how much a forex trader can deploy to open new positions.

FX Asian Option An exchange-rate option that pays based on the average spot rate over a period, not the rate at expiry, reducing volatility and manipulation risk.

FX Barrier Option An exchange-rate derivative that activates or cancels based on whether the spot rate touches a pre-set barrier level, reducing premium versus standard options.

FX Butterfly Spread: Strategy and Mechanics An FX butterfly spread uses long-dated options at the wings and short-dated at the body to trade limited spot movement or convexity at low cost.

FX Collar Option Strategy for Corporate Hedgers An FX collar combines a long put and short call (or vice versa) to cap both upside and downside on currency exposure, often at zero net cost.

FX Compound Option An option giving the holder the right to buy or sell an underlying FX option at a preset strike and premium on a future date.

FX Correlation Risk Risk from changing correlations between currency pairs, affecting hedging effectiveness and portfolio diversification.

FX Digital Option A binary currency option that pays a fixed lump sum if the exchange rate ends above or below a strike, or nothing if it doesn't.

FX Forward An FX forward is a binding OTC contract to exchange two currencies at an agreed-upon rate on a future date. Forwards are customized, settle bilaterally, and are the most common instrument for hedging currency risk outside the retail forex market.

FX Forward Break-Even Rate Explained The FX forward break-even rate is the future exchange rate at which a currency hedge neither gains nor loses. How to calculate it using interest rate parity.

FX Forward Extra A zero-cost structured FX product that locks in a worst-case exchange rate while granting the buyer participation in favourable spot moves.

FX Forward Hedging for Small Businesses Small importers and exporters can lock in exchange rates using FX forwards. Learn how forwards work, deposit requirements, and early-termination costs.

FX Gamma Scalping Dynamic rehedging of an options book to capture profits when realised volatility exceeds implied volatility; earns the gamma spread.

FX Implied Volatility Term Structure: Why Short-Dated Vol Differs from Long-Dated FX implied volatility term structure explains why short-dated volatility differs from long-dated across FX options maturities—driven by event risk, carry, and liquidity.

FX Intervention and Hot Money Flows Central banks use FX intervention to dampen volatile short-term capital inflows. Learn how authorities manage these destabilizing flows without full capital controls.

FX Intervention Exit Strategy: When Central Banks Stop Supporting a Currency How central banks exit currency intervention without triggering the volatility they sought to suppress—the challenge of credible withdrawal.

FX Intervention in a Small Open Economy How small, trade-dependent economies face unique constraints when intervening in currency markets, and why their leverage differs fundamentally from large economies.

FX Intervention in Emerging Markets: Why It Differs from Advanced Economies Understand why emerging-market central banks intervene more frequently and defensively than advanced economies, and the structural constraints they face.

FX Intervention Signaling Channel The mechanism by which central-bank currency market operations convey private information about future monetary policy and economic outlook to private traders.

FX Intervention Under an Inflation-Targeting Regime How central banks reconcile exchange-rate operations with inflation targets; policy hierarchy and coordination challenges.

FX Intervention vs Interest Rate Policy: Which Tool When Central banks use FX intervention and interest rate policy to manage the currency, but the two tools can conflict. Understanding when each is deployed reveals policy intent.

FX Liquidity Aggregation The practice of combining real-time price streams from multiple liquidity providers into a single composite best bid-offer for client execution.

FX Market Maker A dealer that continuously quotes both a bid and ask price in currency pairs, profiting from the spread between them and providing essential liquidity.

FX Option An FX option is a currency option traded in the professional OTC market. FX options are customized, large-sized, and priced using volatility models. They serve as hedging tools for corporations and are the basis for exotic derivatives.

FX Option Delta Conventions How spot delta, forward delta, and premium-adjusted delta differ; quoting conventions vary by currency pair and dealer.

FX Option Delta Hedging: A Guide for Corporate Treasurers FX option delta hedging for corporates: buying protective FX options and rebalancing spot positions to lock in an effective budget rate while capturing upside if the currency moves favorably.

FX Option Expiry Cut Conventions: New York vs Tokyo The New York 10 am and Tokyo 3 pm expiry cuts determine when FX options stop trading and when exercise decisions lock. Choosing the right cut affects hedging costs and timing.

FX Option Expiry Cut Times: New York Cut vs Tokyo Cut Explains the two dominant daily expiry windows for over-the-counter FX options, why spot prices gravitate toward large strike levels, and how traders monitor cut times.

FX Option Intrinsic Value vs Time Value How an FX option premium splits into intrinsic value and time value, and how each component decays as expiration approaches.

FX Option Premium Currency Choice: Base vs Quote Why FX option premiums are quoted in base or quote currency matters to cost and delta. Explains dealer conventions and effective pricing.

FX Option Premium Settlement: Upfront vs Deferred Payment How FX option premiums are paid at trade date versus expiry, affecting cash-flow timing and credit exposure between counterparties.

FX Option Theta Decay: How Time Erodes Premium How time decay accelerates in FX options, theta quotation per day, and implications for hedgers holding long option positions.

FX Order Matching: Price-Time Priority Explained Understand how electronic forex venues rank and fill orders using price-time priority rules and what it means for execution quality.

FX Points Spread Forward forex pricing using basis points for precision; difference between spot and forward rate.

FX Prime Brokerage A service in which a prime broker extends credit to hedge funds and other traders, sources liquidity from multiple dealers, and executes FX trades on their behalf.

FX Range Accrual A structured product paying enhanced yields for calendar days when the spot exchange rate remains within a predetermined band.

FX Risk Reversal A directional volatility strategy that measures the premium gap between out-of-the-money calls and puts at equal delta, revealing market skew.

FX Roll Forward Renewing a forward contract to extend its maturity date without closing the original position.

FX Rollover and Swap Points Explained How swap points in forex rollover are calculated from interest-rate differentials and whether they cost or credit a trader.

FX Rollover Rate The overnight interest charge or credit applied when an open FX spot position is held past its standard T+2 settlement date.

FX Session Overlap The hours when two or more major regional forex trading sessions run simultaneously, creating peak liquidity and volatility.

FX Settlement Netting A mechanism that combines offsetting currency obligations between counterparties into a single net payment, reducing settlement risk and costs.

FX Straddle and Strangle Volatility strategies that buy or sell both calls and puts to profit from large moves regardless of direction, or to harvest premium if the currency stays calm.