As portfolios go, the one put forward by John Arnold, the billionaire energy trader turned philanthropist, doesn’t get simpler.

U.S. stock-index futures fell and oil prices surged again on Sunday, following sharp losses on Wall Street on Friday, as investors are waking up to the reality that the economic effects of the Iran war — now entering its fifth week — are likely to last longer than first expected.

Four weeks into the Iran conflict, global financial markets are starting to show some serious signs of strain.

The sportswear giant has been trying to focus more on the needs of athletes, but analysts say new products aren’t catching on.