Sure! Here are a few rephrased versions of "Bob hold," depending on the context you're going for:
Bob is holding.
Bob continues to hold.
Bob's holding strong.
Bob didn't sell.
Bob is staying in.
Bob refuses to let go.
Bob's still holding the line.
Let me know the tone or setting (e.g., trading slang, narrative, serious, humorous) if you'd like a more specific rephrasing!