United Kingdom stocks and the pound sterling plunged on the Brexit vote, but a benchmark index of blue-chip UK stocks has already erased losses while the cable remains depressed, highlighting the potential currency risks that U.S. exchange traded fund investors face when looking to overseas markets.

The FTSE 100 climbed to 6,360, surpassing the level at its open on Friday following the U.K.’s vote to leave the European Union. The British pound was trading at $1.3444 Tuesday, compared to $1.4877 before the Brexit vote was tallied.

“The dust settled very quickly,” Alan Higgins, chief investment officer at Coutts & Co., told Bloomberg. “We’ve been fairly confident on the FTSE 100 – it’s the most clear investment to pick up after the Brexit vote. The reality is: life goes on for most of these companies.”

Related: 10 ETFs Hit the Hardest in ‘Brexit’ Fallout

While U.K. equities rebounded, the GBP has not recovered against the USD. The FTSE 100 is still about 8.5% cheaper than its pre-referendum level in U.S.-dollar terms.

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Meanwhile, the iShares MSCI United Kingdom ETF (NYSEArca: EWU), a non-currency-hedged U.K. ETF, was still down 9.3% from its June 23 close.

Alternatively, the currency-hedged United Kingdom ETFs have provided a purer play on the underlying British market. For instance, since June 23, the Deutsche X-Trackers MSCI United Kingdom Hedged Equity ETF (NYSEArca: DBUK) was only down 0.4%, iShares Currency Hedged MSCI United Kingdom ETF (NYSEArca: HEWU) was up 0.3% and  WisdomTree United Kingdom Hedged Equity Fund (NasdaqGM: DXPS) gained 2.1%.

Related: ETFs to Watch as Brexit Uncertainty Mounts

U.S. investors face currency risks when investing in overseas markets. In the even of a depreciating foreign currency, such as the weakened British pound, U.S. investors may see returns depressed once overseas returns are converted into U.S.-dollar terms. However, a currency-hedged ETF tries to diminish the negative effects and would outperform a non-hedged strategy if the overseas currency depreciates.

For more information on the U.K., visit our United Kingdom category.

WisdomTree United Kingdom Hedged Equity Fund