05/08/2013 - close $55.79
05/09/2013 - high $75.77
that's 35% (40% according to article) from previous close to next day's high... why?...
Tesla stock up 40% this week
"Just how dramatic has the spike in Tesla been? Consider this. Tesla's market value is now nearly $9 billion. By way of comparison, General Motor, (
GM) the nation's largest automaker, has a market value of about $43 billion.
So GM is worth only five times as much as Tesla. But GM reported 65 times more revenue, 100 times more profit and nearly 500 times more vehicles sold globally than Tesla in the first quarter."
20 quarters later and the story is: Tesla reported one (two?) profitable quarters since then... GM delivers 100x more cars... and Tesla (for a while) had a higher market value than GM.
EDIT:
Tesla drives California environmental credits to the bank
without ZEV credits it wouldn't have been profitable in 2013 for that quarter... as well as in Q3 2016.