In MLB The Show 26, there's a new rule in the Diamond Dynasty marketplace where players can only own up to 20 copies of any one item at a time.

Marketplace 20-Card Ownership Limit

• Inventory Cap: You can own no more than 20 copies of the same player card or item.
• Buy Order Restriction: Once you hit the 20-card limit, you'll see a message saying "Marketplace Limit Reached," and you won't be able to buy more of that card.
• Impact on Investing: The limit mainly targets "roster update investing," where players used to buy many copies of a card, hoping its value would go up after a ratings boost.
• Impact on Flipping: While flipping (buying low and selling high) is still possible, the limit means you can't buy large quantities of the same card. You'll need to diversify your trading.

Why the Change?

Although San Diego Studio (SDS) didn't give a detailed explanation, experts and community members suggest this rule is meant to:

• Reduce Hoarding: Stops players from cornering the market on a specific card.
• Market Stabilization: Aims to prevent price inflation caused by mass buyouts.
• Counter Bots: Helps stop automated accounts from manipulating prices.