NEW YORK (AP) — Stocks have lost ground today as technology and health care companies slip. Investors are looking ahead to Congressional hearings Wednesday on social media, and trade talks between the U.S. and Canada. The U.S. could also announce new tariffs on $200 billion in imports from China later in the week.

NEW YORK (AP) — Amazon has become the second publicly-traded company to reach $1 trillion in market value. It later gave up some of that gain. Apple reached $1 trillion on Aug. 2 and is now valued at $1.1 trillion. According to S&P Dow Jones Indices, Amazon and Apple combined account for 8 percent of the current value of the S&P 500. Amazon has climbed 74 percent in 2018 while Apple has gained 36 percent. The S&P 500 is up a bit more than 8 percent.

WASHINGTON (AP) — U.S. factories grew at a faster pace in August as American industry continues to show robust health. The Institute for Supply Management, a trade group of purchasing managers, says its manufacturing index jumped last month to 61.3 from 58.1 in July. Anything over 50 signals growth, and U.S. manufacturing is on a 24-month winning streak.

WASHINGTON (AP) — Executives from Facebook and Twitter are scheduled to testify before the Senate Intelligence Committee Wednesday about how the companies are dealing with efforts by Russia and other countries to influence social media platforms and interfere in U.S. elections. Twitter CEO Jack Dorsey is also scheduled to testify before a House committee, which wants to know how Twitter monitors and polices content. Without evidence, conservatives have accused Twitter of limiting their reach online.

UNDATED (AP) — An endorsement deal between Nike and Colin Kaepernick is prompting a flood of debate online as sports fans react to the apparel giant backing an athlete known mainly for starting a wave of protests among NFL players. The deal unveiled by Nike and the former San Francisco 49ers quarterback was a trending topic on Twitter and other social networks, with some fans urging a boycott of the company's clothes and sneakers. Shares in Nike have been down by more than two percent on Wall Street.