By Dan Weil Those two, plus Alphabet, Amazon and Microsoft have something in common this year. As technology stocks have hit the skids in recent months, the big dogs haven’t been able to escape the carnage. Meta Platforms (FB) – Get Meta Platforms Inc. Class A Report has fared the worst, plunging 47% year to date. The company is particularly suffering from Apple’s new policy of “app tracking transparency.” Under the new rules iPhone apps need to get permission from users to track them. Not surprisingly, most users opt out. Meta needs to track users to make its ad-targeting work. The company ha…