Joel Marcus’ interpretation on the end of Mark’s Gospel:

“Since Mark does not wrap up all the loose ends, we have no alternative but to return to the inception of his narrative, “the beginning of the good news of Jesus Christ” (Mark 1.1), and to start to read it again as our story. Mark’s gospel is just the beginning of the good news, because Jesus’ story has become ours, and we take it up where Mark leaves off.”

(Joel Marcus, Anchor Bible Commentary vol. 27a Mark 8-16, page 1096)