Analysis of information sources in references of the Wikipedia article "1929年華爾街股災" in Chinese language version.
在20世紀初股市投機原本只限於專業人士，但自1920年代起，數以百萬計的「普羅美國人」也將錢投資到紐約股票交易所。截止1929年8月，股票經紀向小投資者借出相等於股市面值三份之二的貸款，當中不少股票是以孖展形式買入－借出的貸款額高達85億美元。（At the turn of the 20th century stock market speculation was restricted to professionals, but the 1920s saw millions of "ordinary Americans" investing in the New York Stock Exchange. By August 1929, brokers had lent small investors more than two-thirds of the face value of the stocks they were buying on margin - more than $8.5bn was out on loan.）
1929年至1932年間的華爾街股災是史上最兇險的熊市，整體股價在當時一共下跌89%。（The most savage bear market of all time was the Hall Street Crash of 1929-1932, in which share prices fell by 89 per cent.）
在20世紀初股市投機原本只限於專業人士，但自1920年代起，數以百萬計的「普羅美國人」也將錢投資到紐約股票交易所。截止1929年8月，股票經紀向小投資者借出相等於股市面值三份之二的貸款，當中不少股票是以孖展形式買入－借出的貸款額高達85億美元。（At the turn of the 20th century stock market speculation was restricted to professionals, but the 1920s saw millions of "ordinary Americans" investing in the New York Stock Exchange. By August 1929, brokers had lent small investors more than two-thirds of the face value of the stocks they were buying on margin - more than $8.5bn was out on loan.）
