When the Shock Crosses a Border
A foreign investor can hold a sovereign bond in one currency while financing or hedging the position through contracts that mature in another. This chapter follows that position from purchase to rollover, focusing on the way short-dated foreign-exchange swaps, repo and a concentrated dealer network can turn currency protection into funding dependence. The practical judgment is that local-currency government debt may be insulated from one form of risk and still remain exposed to global liquidity, dollar funding and foreign-investor balance sheets.
The cross-border connection is easy to miss because the bond may be denominated in the investor’s local currency and the currency exposure may appear fully hedged. The hedge, however, is a contract with a maturity and a counterparty. If the asset lasts for years but the hedge must be renewed within months, the investor has exchanged an open currency exposure for a recurring rollover obligation. That obligation is quiet when markets are liquid. It becomes visible when dealers’ balance sheets or dollar funding conditions tighten.
A hedge that expires before the asset
An investor that buys a dollar-denominated government bond but reports returns in another currency faces a currency risk: the bond’s value in dollars can be stable while the exchange rate changes the value in the investor’s home currency. A short-dated foreign-exchange swap or forward can hedge that exposure. In simple terms, the investor arranges an exchange of currencies now and a reversal later, with the future exchange rate and financing terms specified by the contract.
The protection is real but temporary. A hedge with a maturity of a few months does not cover the asset forever; it must be rolled into a new contract. If the bond is long-lived and the hedge is short-lived, the investor depends on the market remaining willing to offer a new hedge at a workable price each time. A change in the cost of dollars, the dealer’s capacity or the margin required on the contract can make the next rollover more difficult even when the bond issuer’s ability to pay has not changed.
The scale of this market makes the distinction material. The Bank for International Settlements reports that outstanding foreign-exchange swaps, forwards and currency swaps reached about $130 trillion at the end of 2025, up from about $50 trillion in 2009. Roughly three quarters of the contracts mature within one year. These figures cover a broad set of financial and non-financial counterparties; they are not an estimate of one investor’s exposure. They do show why short-term renewal is a structural feature of cross-border finance rather than an unusual exception.
A foreign investor can therefore be exposed to two different moves. The local bond may fall in price because global rates rise, domestic fiscal risk worsens or foreign investors reduce their demand. At the same time, the currency hedge may become more expensive to renew or require more collateral. If the investor cannot or does not want to add cash, reducing the bond position can provide the funds needed to close or replace the hedge. The sale may put further pressure on the local sovereign yield.
This is a version of the safe-asset paradox at a distance. A government bond may be held because it is liquid and relatively safe in credit terms, but the investor’s complete position includes the bond, the currency hedge and the financing needed to keep both in place.