Hope takes the reins on Wall Street, stocks rally worldwide

Currency traders watch monitors at the foreign exchange dealing room of the KEB Hana Bank headquarters in Seoul, South Korea, Friday, April 17, 2020. Shares have advanced in Asia after China's economic growth data, while bleak, was better than expected. (AP Photo/Ahn Young-joon)

A currency trader gestures at the foreign exchange dealing room of the KEB Hana Bank headquarters in Seoul, South Korea, Friday, April 17, 2020. Shares have advanced in Asia after China's economic growth data, while bleak, was better than expected. (AP Photo/Ahn Young-joon)

A currency trader watches monitors at the foreign exchange dealing room of the KEB Hana Bank headquarters in Seoul, South Korea, Friday, April 17, 2020. Shares have advanced in Asia after China's economic growth data, while bleak, was better than expected. (AP Photo/Ahn Young-joon)

A currency trader watches monitors at the foreign exchange dealing room of the KEB Hana Bank headquarters in Seoul, South Korea, Friday, April 17, 2020. Shares have advanced in Asia after China's economic growth data, while bleak, was better than expected. (AP Photo/Ahn Young-joon)