Valaris (VAL) has caused devastating losses to its shareholders since it peaked, in mid-2014. During this period, the stock has plunged 98%. This stock has been my worst investment ever but fortunately I stopped my losses at 50% and my portfolio has enjoyed a strong recovery since then. In this article, I will analyze the precious lessons that investors can take from the debacle of Valaris. These lessons can help investors avoid other investing disasters, which can devastate the long-term performance of a portfolio.
Lesson 1: The purchase price is irrelevant
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