BondStats
Interest-Rate Derivatives

Overnight Index Swap

Overnight Index Swap is a derivatives-market concept used to describe pricing, risk transfer, settlement or hedging of interest-rate, credit or volatility exposure.

DEFINITION

Overnight Index Swap is a derivatives-market concept used to describe pricing, risk transfer, settlement or hedging of interest-rate, credit or volatility exposure.

How Overnight Index Swap works

In practice, the economic effect depends on the underlying exposure, contract terms, valuation convention and the way collateral or financing is handled. The market therefore evaluates Overnight Index Swap as part of a broader package of curve exposure, volatility, funding and counterparty risk.

Why it matters in markets

Overnight Index Swap matters because fixed-income portfolios are exposed not only to the level of yields but also to curve shape, volatility, spreads and financing conditions. Derivatives are often the most direct way to transfer those risks.

How to interpret Overnight Index Swap

Interpret Overnight Index Swap by first identifying the risk being transferred, then separate directional exposure from curve, basis, volatility, funding and counterparty effects. Compare the hedge with the cash exposure on the same valuation date and under the same rate and spread assumptions.

Limits and context

Overnight Index Swap is not standardized across every venue or contract. Documentation, curve construction, day-count rules, collateral terms and model choices can change valuation and hedge results, so the governing trade terms remain authoritative.

BondStats educational market reference. Definitions describe common market usage and are not investment, legal, accounting or regulatory advice.