Why Lululemon Stock Fell Sharply in September

Lululemon Athletica (NASDAQ: LULU) shares fell 12% in September following management's reduced full-year outlook, primarily due to weaker U.S. demand and significant margin pressure from tariffs expected to persist into 2026. The company now forecasts just 2-4% revenue growth and a 12% decline in EPS year-over-year, despite robust international performance. While the stock's valuation has become less demanding, this domestic slowdown and tariff headwind introduce considerable uncertainty, contrasting with strong international momentum.

Analysis

Lululemon Athletica (LULU) experienced a significant 12% share price decline in September, directly attributable to management's downward revision of its full-year outlook during its September 4th earnings report. The revised guidance projects revenue growth of only 2% to 4% (4% to 6% excluding a 53rd week in the prior year) and a notable 12% year-over-year decline in earnings per share. This negative revision stems from two primary headwinds: disappointing performance and weaker demand in its core U.S. market, and a substantial, multi-year margin impact from tariffs expected to persist into 2026. While fiscal second-quarter revenue grew 7% to approximately $2.5 billion, diluted EPS fell to $3.10 from $3.15, signaling pressure even before the guidance cut. A key dichotomy exists within the company's performance, as softness in the Americas contrasts sharply with exceptional international momentum, where revenue soared 22% in Q2. Despite the stock's valuation contracting to a less demanding price-to-earnings multiple of 12, the article suggests this is not a clear bargain due to heightened uncertainty surrounding its largest region's growth and structural profit compression.

Key Decisions for Investors

• Investors should exercise caution, as the lowered full-year guidance, which includes a 12% EPS decline, reflects fundamental weakness in the critical U.S. market.
• Monitor gross and operating margin trends closely in subsequent quarters, as management has explicitly flagged a multi-year headwind from tariffs that will compress profitability through 2026.
• While the P/E multiple of 12 appears historically low, this valuation must be weighed against decelerating domestic growth and increased execution risk, suggesting it may not represent a compelling entry point until U.S. demand stabilizes.
• Pay close attention to the performance of the international segment, as its continued double-digit growth is the primary offset to domestic softness and a key pillar of the bull case.