An optimism may be dissipated in days.Logical formLearned from4 sentences. News may puncture (investor optimism).Logical formLearned from4 sentences. Some others may share an optimism.Logical formLearned from4 sentences. Investors may regain some optimism.Logical formLearned from4 sentences. An optimism may swing.Logical formLearned from4 sentences. Optimism may push (energy prices).Logical formLearned from4 sentences. Stocks may soar on (investor optimism).Logical formLearned from4 sentences. An optimism of an era can be a reason.Logical formLearned from4 sentences. A decision may send a signal of an optimism.Logical formLearned from4 sentences. A trend can be due to optimism.Logical formLearned from4 sentences. An optimism can be clouded.Logical formLearned from4 sentences. Pessimism may trump optimism.Logical formLearned from4 sentences. Some optimism can be around a meeting.Logical formLearned from4 sentences. Some optimism may surround the economy.Logical formLearned from4 sentences. (Investor optimism) may wane.Logical formLearned from4 sentences.