Signet Jewelers (SIG), the world's largest retailer of diamond jewelry, saw its stock surge 6.12% in pre-market trading on Tuesday following the release of its better-than-expected first-quarter fiscal 2026 results and raised full-year guidance.

The company reported adjusted earnings per share of $1.18, significantly beating the IBES estimate of $1.03. Revenue for the quarter came in at $1.54 billion, surpassing analyst expectations of $1.52 billion. Signet also posted a positive same-store sales growth of 2.5%, which exceeded market projections.

Investors were particularly encouraged by Signet's improved outlook for fiscal year 2026. The company raised its adjusted diluted EPS guidance to a range of $7.70 to $9.38, reflecting increased confidence in its performance for the rest of the year. Additionally, Signet provided a positive forecast for the second quarter, projecting total sales between $1.47 billion and $1.51 billion.