Shares of Deckers Outdoor (DECK) tumbled 12.92% in after-hours trading on Thursday, following the company's release of its fourth-quarter results and first-quarter outlook. Despite reporting strong Q4 performance that beat analysts' expectations, investors were rattled by the company's weaker-than-anticipated guidance for the upcoming quarter and its decision to withhold full-year projections.

For the first quarter, Deckers expects net sales to be in the range of $890 million to $910 million, falling short of the consensus estimate of $925.9 million. The company also forecasts diluted earnings per share between $0.62 and $0.67, significantly below analysts' expectations of $0.79 per share. This conservative outlook has sparked concerns about the company's near-term growth prospects.

Adding to investor worries, Deckers announced it would not provide full-year guidance for fiscal year 2026 due to "macroeconomic uncertainty related to evolving global trade policies." This decision has fueled speculation about potential impacts from tariffs, as the company sources approximately 20% of its products from China. The lack of long-term visibility, combined with concerns over trade tensions, has prompted a sell-off in Deckers' shares as investors reassess the company's risk profile in the current economic landscape.