Yes, Magento 2 Share Cart feature handles stock changes in real-time. When a recipient opens a shared cart link, the system checks current product availability. It does not reserve items or use the stock levels from when the cart was originally shared. If a product has sold out, it will simply show as "out of stock." If the stock is low, the quantity will adjust to the available amount. This smart inventory check in the Magento 2 Share Cart provides an accurate experience and prevents overselling unavailable items.

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