Vietnam's economy benefits from the deal, but the VanEck Vietnam ETF's limited manufacturing exposure means the news isn't a strong buy catalyst. Learn more on VNM ETF here.

As for the main indexes, the S&P 500 was up 0.5% at 6,227 and the Nasdaq Composite gained 0.9% to 20,393 – new record closing highs. The Dow Jones Industrial Average slipped 0.02% to 44,484.

Shares of Nike and other apparel makers rose on Wednesday after U.S. President Donald Trump said he had struck a trade deal with Vietnam that would impose a lower than initially expected tariff rate on many imports from the Southeast Asian country.