Etsy Inc. is mulling an initial public offering, which could result in the biggest technology listing to come from New York since 1999, Bloomberg News reported Wednesday, citing people familiar with the matter. Brooklyn-based Etsy, a marketplace for handmade crafts and vintage goods, is looking to raise $300 million, one of those persons said. The company is working with Goldman Sachs Group Inc. and Morgan Stanley on the IPO, the report said. Barbara Kollmeyer