The SK Telecom article at Wikipedia says
SK Telecom is South Korea's largest wireless carrier, it leads the local market with 50.5 percent share as of 2008.
But can it be written like this? The sentence after the comma has a verb but not a conjunction. Why were both sentences written without conjucntion?
I was taught that a comma can join sentences, but not sentences that have two or more verbs without a conjunction. Is my understanding correct?