Donald Trump has said a lot of things that, were he a sitting U.S. president instead of a candidate for the job, could be expected to roil financial markets.

If investors were taking the Republican presidential nominee at his word, they would be selling shares of Apple, Mondelez International and Ford and cashing out of Mexican equities — all targets of Trump threats of boycotts, barrier walls or import taxes. Investors betting on a Trump presidency would be buying shares of U.S. companies that dealt exclusively with domestic customers and suppliers.

Yet the Trump trade is not much in evidence on Wall Street, where some market strategists and investors said they find it difficult to position their portfolios for his possible presidency, in part because many of his proposals are contradictory or lack specific implementation details.