The first CD that I ever bought for myself was Meatloaf's Bat Out Of Hell II, which I still listen to now and then. I haven't a clue what the first cassette or vinyl record I bought was; those were well over twenty years ago. I might still listen to some of the music from those old vinyl/cassette albums, but not to the physical albums themselves. Everything I listen to now is CD or MP3.
EDIT: I was answering this strictly on the basis of albums I had bought, although the original question says "bought or owned". That doesn't change anything for CDs (first CD I owned was the first CD I bought) or some of the other answers I put in the comments (first