WooCommerce - Bulk Stock Management v2.2.8

Edit product and variation stock levels in bulk via this handy interface. Bulk manage stock levels and print out stock lists from admin. The bulk stock management extension gives you a new interface (found in Products > Stock management) which lists your products and variations along with their stock properties. Products can be filtered by product type, stock management status and stock status, and ordered by name, ID, SKU or stock quantity.

DEMO:
https://woocommerce.com/products/bulk-stock-management/