看見台股驚人一幕 台大教授嚇喊:散戶快 - 股票
By Todd Johnson
at 2020-09-04T09:07
at 2020-09-04T09:07
Table of Contents
1.原文連結:
https://www.chinatimes.com/realtimenews/20200902005202-260410?chdtv
2.原文內容:
看見台股驚人一幕 台大教授嚇喊:散戶
近期,不論是美股或台股常開出紅盤,熱鬧滾滾,吸引更多人爭相投入,但有學者卻從證
交所的資料統計分析,發現台股7月的交易戶數高達256萬戶,理論上要每2500年才有一個
月會有這麼大的交易戶數,對於股市不尋常的熱度,他只想奉勸大家一句話:「趁著還能
跑,趕快下車!」
台灣大學化學系助理教授徐丞志日前在臉書發文,他表示利用台股加權指數過去20年的歷
史走勢圖,以及從台灣證券交易所的「證券市場統計概要月報」抓出「每月有交易戶數」
的逐月數據做出統計比較,過去20年台灣股票市場平均每月有交易戶數約為 138 萬戶(
因為過去20年台灣人口數僅從2200萬增加到2300萬,因此就不做趨勢線修正),標準差約
為29萬戶。由這個數字可以得知在絕大多數的月份裡,有在台股進行交易的人數大約落
在 80 ~ 196 萬戶之間(正負兩個標準差內),占了大約 95% 的月份。
因此,當台股每月有交易的戶數超過200萬戶時,代表有很多平常完全沒在碰股票的人都
跳進場內進行交易了。
股票市場上有個很常被討論的理論,叫作「擦鞋童理論」,典故是在20世紀初的紐約,有
個經濟學大師發現,連擦鞋童都在跟他討論要買哪支股票,他因此判斷市場過熱且即將崩
盤,因此出脫手中的股票而逃過股災。
台股歷史上幾次的景氣循環高點,都伴隨著超過 200 萬戶的「每月有交易戶數」,包括
2000年初的 dot-com 泡沫,以及2008年的美國金融海嘯,緊著就是腰斬的台股加權指數
。
同時,再回頭看看最近半年的數字,3月的交易戶數為246萬,4月(195 萬)、瞬月(205萬)
、5月(220萬),接著7月則達到256萬戶,(8月沒意外的話也會超過200萬戶,所以過去半
年只有一個月低過熱的警戒線。)
他強調,256 萬戶在統計上是什麼概念,它代表了的是四個標準差,也就是它出現的機率
為0.003%,等於是每三萬次才會出現一次,換算一下就是理論上要每2500年才有一個月會
有這麼大的交易戶數出現。而且別忘了,今年3月才剛出現過246萬交易戶數(標準差 3.7
,機率約為萬分之二),而且過去連續幾個月都在200萬戶以上。
很多人只看到眼前股市的榮景,而沒有想到與經濟現況並不符合,面對這麼不尋常的股市
熱度,搭配加權指數不斷創下歷史高點,徐丞志只想說一句話:「趁著還能跑,趕快下車
!」
3.心得/評論:
看見台股驚人一幕 台大教授嚇喊:散戶快跑
台股不貴 谷月涵喊進
工商時報 李娟萍,工商時報 鄭郁平 2020.09.03
股海冥燈比尬偉老師強太多了
一個是喊完隔兩天就中
另一個是天天喊 喊中就有會員加入
--
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