Steve Jobs -- Big Man on Campus ... Again

7/30/2009 10:40 AM PDT

Steve Jobs -- Big Man on Campus ... Again

UPDATE 10:03 AM: Apple stock is blowin' up -- it's now up 4.00 a share.

Jobs' return seemed to be noticed on Wall St. -- right now (9:35 AM EST), the Apple stock is up 2.52 a share.

Steve Jobs
is back to an Apple a day -- and we've got the proof.

TMZ obtained this photo of the Apple co-founder leaving company headquarters in Cupertino, California around 3:00 PM Wednesday.

It's the first time we've seen Jobs back in action since January, when he took a leave of absence for a liver transplant. Jobs has reportedly been back at work for about a month.

BTW -- this photo was taken on an iPhone.