Cenergy Holdings is trading at €24.26, up 5.02%, with no confirmed catalyst for the September 28 move in the available search results. - Its latest identified announcement was a September 16 share-buyback program, permitting purchases of up to 435,000 shares, capped at €10 million over 24 months; this is prior news, not a confirmed session catalyst. - Broader markets were described as risk-off, and the available evidence does not establish a clear cause for the gain.