NEW YORK (AP) — Stocks are rising in early trading Friday ahead of a speech by the head of the Federal Reserve.The S&P 500 was up 0.4%, coming off its worst loss in three weeks. The Dow Jones Industrial Average was up 163 points, or 0.5%, at 34,362, as of 9:40 a.m. Eastern time, and the Nasdaq composite was 0.6% higher.The day’s headliner is Fed Chair Jerome Powell, who is giving a speech at an annual Fed event that’s been the site of big policy announcements in the past. The hope is that he’ll say the fall in inflation over the last…