Shares of Mattel, Inc. plunged 13 percent Friday and hit a new 52-week low of $21.78 after the company reported disappointing first-quarter results. The sell off has created a unique opportunity for dividend investors as the stock is currently yielding nearly 7 percent.There is some concern that Mattel's $0.38 per share quarterly dividend is unsustainable and may need to be slashed.According to UBS's Arpine Kocharyan, Mattel's analyst day in June will provide some insight into the sustainability of the dividend. The analyst noted that the company's board hasn't yet reviewed management's new strategic priorities after naming an ex-Google executive Margo Georgiadis as CEO in early 2017.via