北京时间17日凌晨，美股周五收跌，道指下跌约300点。投资者正评估本周的企业财报与经济数据。美国7月消费者信心指数意外下降，6月零售销售数据超预期。
道指收盘下跌299.17点，或0.86%，报34687.85点；纳指跌115.90点，或0.80%，报14427.24点；标普500指数跌32.87点，或0.75%，报4327.16点。本周道指累计下跌0.5%，纳指下跌1.9%，标普500指数下跌1%。
美股财报季在本周拉开帷幕，一系列经济数据也在本周出炉。经济数据好坏参半，其中核心消费者价格指数（CPI）与生产者价格指数（PPI）均创数十年来的最大增幅，凸显出供应链紧张与劳动力短缺的影响。
周五经济数据面，美国商务部周五公布的零售销售报告显示，美国6月零售销售增长0.6%，表明消费者需求依然强劲。另一份数据表明美国7月消费者信心指数意外跌至五个月低点，因对物价上涨的日益担忧导致大件商品的购买条件急剧恶化。
16日成交额榜首亚马逊收跌1.6%，成交143.2亿美元。亚马逊16日宣布，将于当地时间7月29日（北京时间7月30日）发布2021年第二季度财报。财报发布后，亚马逊将于美国太平洋时间7月29日下午2点30分召开财报会议，解读财报结果，并回答分析师的提问。
第2名苹果公司收跌1.4%，成交131.3亿美元。市场调研机构Canalys发布第二季度全球手机市场出货量报告显示，小米全球智能手机市占率同比增长83%，达到17%，而苹果公司的市占率为14%。这意味着小米在第二季度全球市场成功超越了苹果，拿下了全球手机市场第二的宝座。
第3名英伟达公司收跌4.2%，成交126.5亿美元。英伟达本周连续四个交易日下跌，周跌幅达9.4%。
第4名特斯拉公司收跌1.4%，成交104.4亿美元。特斯拉本周亦录得4连跌。
第6名AMC院线收跌2.9%，成交46亿美元。这只WSB散户概念股本周累计下跌24.3%。
第10名波音公司收跌2.25%，成交27.2亿美元。美国联邦航空管理局发现波音737系列飞机一个压力开关的故障概率远超预期，已经构成了重大风险，可能导致重大飞行事故。据悉全球超9300架737系列飞机都存在相关安全风险。
两只中概股入围今日美股成交额前20强。第12名巴巴收跌1.2%，成交23.5亿美元。第15名蔚来汽车公司收跌2%，成交21.4亿美元。
以下为美股当日交易最活跃的20只股票（按成交额）：
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In the early morning of the 17th, Beijing time, U. S. stocks closed down on Friday, with the Dow down about 300 points. Investors are reviewing this week's corporate earnings and economic data. The US consumer confidence index fell unexpectedly in July, with retail sales data exceeding expectations in June.
The Dow closed down 299.17 points, or 0.86%, at 34687.85; the Nasdaq fell 115.90 points, or 0.80%, at 14427.24; and the S & P 500 fell 32.87 points, or 0.75%, at 4327.16. This week, the Dow is down 0.5%, the Nasdaq is down 1.9%, and the S & P 500 is down 1%.
The earnings season for U. S. stocks kicked off this week, and a series of economic data were released this week. Economic data were mixed, with both the core consumer price index (CPI) and the producer price index (PPI) rising at their fastest pace in decades, highlighting the impact of supply chain tensions and labour shortages.
On the economic data side on Friday, the retail sales report released by the U.S. Department of Commerce on Friday showed that U.S. retail sales rose 0.6% in June, indicating that consumer demand remains strong. Another data showed that consumer confidence in the United States unexpectedly fell to a five-month low in July as growing concerns about rising prices led to a sharp deterioration in conditions for buying big-ticket items.
Top of the list of turnover on the 16thAmazonIt closed down 1.6% on a turnover of US $14.32 billion. Amazon.Com Inc announced on the 16th that the financial results for the second quarter of 2021 will be released on July 29, local time. After the release of the results, Amazon.Com Inc will hold an earnings meeting at 02:30 Pacific time on July 29 to interpret the results and answer analysts' questions.
Second placeAppleThe company closed down 1.4% on a turnover of $13.13 billion. Market research firm Canalys released a second quarter report on global mobile phone market shipments.milletThe global smartphone market share increased 83% year-on-year to 17%, while Apple Inc's market share was 14%. This means that XIAOMI successfully surpassed Apple Inc in the global market in the second quarter and won the second place in the global mobile phone market.
In third place, NVIDIA Corp Company closed down 4.2%, with a turnover of US $12.65 billion. NVIDIA Corp fell for four consecutive trading days this week, down 9.4 per cent a week.
No. 4TeslaThe company closed down 1.4% on a turnover of $10.44 billion. Tesla also recorded four consecutive falls this week.
In sixth place, the AMC cinema chain closed down 2.9%, with a turnover of US $4.6 billion. The WSB retail stock is down 24.3 per cent this week.
No. 10Boeing CoThe company closed down 2.25% on a turnover of $2.72 billion. The Federal Aviation Administration has found that the failure probability of a pressure switch in the Boeing 737 series is much higher than expected, which poses a major risk and could lead to a major flight accident. It is reported that more than 9300 737 series aircraft around the world have related safety risks.
Two Chinese stocks were shortlisted in the top 20 of today's US stock turnover. 12th placeBabaIt closed down 1.2% on a turnover of $2.35 billion. 15th placeNIO Inc.The car company closed down 2% on a turnover of $2.14 billion.
The following are the 20 most actively traded stocks of the day (by turnover):
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