转 2013年，中国鱼子酱在世界市场上基本没有份额。 2014年，中国水科院,突破了鲟鱼全人工繁育技术，中国鱼子酱开始发力。 2014年，中国鱼子酱产量占世界的1/10；2015年，1/5；2016年，1/3；2017年，40%；2018年，60%. 以前的鱼子酱大国俄罗斯，如今大部分鱼子酱从中国进口。

美股下跌原因？期权？ An element of yesterday’s US sell off was driven by US investors buying call options on technology stocks. Market makers who sell the call options to investors have to buy the underlying stocks as a hedge. This cycle likely explains an element of US technology stocks’ outperformance though, unfortunately, the process works in reverse as well. Several institutional brokers early this week noted that the disparities between Apple and Tesla’s call options prices were exceeding their put option prices by very significant amounts, a sign that things might be reaching a breaking point. The fact that all of this occurred during the last week of summer did not help.