Bed Bath & Beyond Inc.’s stock closed at a record low of 31 cents Thursday as the troubled home-goods retailer continued its push for a reverse stock split. The stock ended Thursday’s session down 8.3%, compared with the S&P 500 index’s SPX gain of 0.4%. The embattled retailer’s previous record closing low was 34 cents, which it hit on Wednesday, FactSet data show. Bed…