
The Russell 1,000 is down more than 3% since its June 2nd high, but several of its biggest losers have lost more than a fifth of their value. In just a week, Ciena (CIEN) has tumbled almost 30%, making it the biggest loser in the index after an 168% upswing on the year before the 6/2 close. Enphase Energy (ENPH), AST SpaceMobile (ASTS), MP Materials (MP), Guidewire Software (GWRE), SailPoint (SAIL), QuantumScape (QS), Aurora Innovation (AUR), and Lumentum (LITE) are the other eight names that have fallen at least 20% over the past week.
On average, the 25 stocks below rallied 35.5% on the year before last week's peak, but they're all down at least 15% since. For nine companies, the losses over the past week add to an already rough 2026. For three of those companies, GWRE, SAIL, and QS, the losses over the past week are even worse than the YTD losses leading up to the 6/2 Russell 1,000 peak.





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