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CLLS forms Upper Bollinger Band Walk on August 21

Cellectis S.A. (CLLS) — SwingTradeBot Technical Analysis Report · Aug 21, 2026, 20:06 ET
On Friday, August 21st, CLLS moved down 1.87% while volume was to 1.2× the usual levels. Upper Bollinger Band Walk — typically a warning sign for traders — developed during the session. Key support levels exist at 3.24, 3.08 & 2.96, with resistance at 3.52, 3.64 & 3.8. Meanwhile, Slow Stochastic is showing overbought conditions.

Current SwingTradeBot Technical Rating of CLLS: C

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Cellectis S.A. (CLLS)