"Wednesday Watchlist: UNFI and Couchbase among top stocks to monitor"

United Natural Foods shares plunged more than 20% after the release of the firm's quarterly report, while Campbell Soup reported Q3 non-GAAP EPS of $0.68, edging past expectations of $0.65. Couchbase shares dropped nearly 17% before the opening bell, despite Q1 results that topped expectations. GameStop is scheduled to report its quarterly results after the closing bell.