Signet Jewelers (SIG) — which also owns jewelry chains Zales and Kay Jewelers — shares are plummeting by over 21% after ...

Signet Jewelers Limited SIG, the largest retailer of diamond jewelry globally, released its preliminary sales results for the ...

Kay Jewelers, Zales parent cut its sales outlook as more customers bought discounted jewelry for Christmas than expected.

Signet, which owns the Zales and Kay brands, says the days leading up to Christmas saw below-forecast performance.