What happened: Values for 92 different Shohei Ohtani rookie cards have jumped nearly 300% since August 2025.
Why it matters: The broad rise shows collector demand extending beyond a single rare card. The surge follows Ohtani reaching 300 career home runs in July.
By the numbers: A gain of nearly 300% means the tracked group is worth roughly four times its August 2025 level.
What to watch: Upcoming auction results will test whether the yearlong gains hold across the wider market.