first, it appears the symbols changes are registered the day before and effective the next day, next, the price can be reset in a merger of this type.
HAVE
Odysseus crossed the river of Styx. He asked Achilles if it was worth trading his life to have his 'name' live forever. Achilles replies: "I would rather be the slave of a slave on earth, then to live here in Hades..." --Homer's The Illiad