If market pricing models break down and forward rates deviate from interest rate parity thresholds, trading desks launch Covered Interest Arbitrage (CIA) strategies to capture risk-free profits.
Executing Covered Interest Arbitrage
[Borrow Capital in Low-Rate State]
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[Convert to High-Rate Currency via Spot] -----> Invest funds at the higher foreign interest rate
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[Sign Reversing Forward Contract] ------------> Locks in the future conversion rate back to home currency
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[Capture Risk-Free Net Arbitrage Profits] ----> Market forces drive rates back to parity equilibrium
Because CIA strategies use forward contracts to lock in the reversing conversion rate at the start of the trade, the profit margin is fully guaranteed, creating risk-free returns. The immediate execution of these automated arbitrage trades by global desks drives prices back into line, reinforcing interest rate parity across the international banking system.
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