全民瘋台股 台大教授急台大教授急勸世 - 股票

By Caitlin
at 2020-09-03T15:33
at 2020-09-03T15:33
Table of Contents
1.原文連結:
全民瘋台股!驚人數據曝光 台大教授急勸世:散戶快下車!
https://www.setn.com/m/news.aspx?newsid=808089
2.原文內容:
記者戴玉翔/台北報導
台股今(3)日在盤中一度大漲158點,讓投資人信心大振,也因為最近股市非常熱絡,這
幾個月常常走在路上都聽到路人在講股票,甚至連平常不投資股市的藝人和立委都在電視
上分享自己的股票經,但是台大教授徐丞志卻在臉書用數據提出示警,他奉勸大家一句話
:「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,他結合「台股加權指數過去20年的歷史
走勢圖」與「每月有交易戶數的逐月數據」,發現驚人的一幕。
徐丞志從數據中發現,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。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。
面對這樣的結論,徐丞志表示,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200
0年初的dot-com泡沫,以及2008年的美國金融海嘯,緊接著就是腰斬的台股加權指數。
7月的用戶數達到256萬戶,在統計上是什麼概念,它代表了的是4個標準差,也就是它出
現的機率為0.003%,等於是每30,000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。
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,徐丞志表示,只想奉勸大
家一句話「趁著還能跑,趕快下車!」
3.心得/評論:
大家怎麼看呢?我是覺得只要各國繼續印鈔票,股票市場就還是高高上,沒那麼容易下去
。台股從2017年底上萬點後到目前為止大部分時間都在萬點以上,記得2018年初的時候很
多人都說要空台股或買50反,到現在50反幾乎沒人再提了。
--
全民瘋台股!驚人數據曝光 台大教授急勸世:散戶快下車!
https://www.setn.com/m/news.aspx?newsid=808089
2.原文內容:
記者戴玉翔/台北報導
台股今(3)日在盤中一度大漲158點,讓投資人信心大振,也因為最近股市非常熱絡,這
幾個月常常走在路上都聽到路人在講股票,甚至連平常不投資股市的藝人和立委都在電視
上分享自己的股票經,但是台大教授徐丞志卻在臉書用數據提出示警,他奉勸大家一句話
:「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,他結合「台股加權指數過去20年的歷史
走勢圖」與「每月有交易戶數的逐月數據」,發現驚人的一幕。
徐丞志從數據中發現,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。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。
面對這樣的結論,徐丞志表示,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200
0年初的dot-com泡沫,以及2008年的美國金融海嘯,緊接著就是腰斬的台股加權指數。
7月的用戶數達到256萬戶,在統計上是什麼概念,它代表了的是4個標準差,也就是它出
現的機率為0.003%,等於是每30,000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。
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,徐丞志表示,只想奉勸大
家一句話「趁著還能跑,趕快下車!」
3.心得/評論:
大家怎麼看呢?我是覺得只要各國繼續印鈔票,股票市場就還是高高上,沒那麼容易下去
。台股從2017年底上萬點後到目前為止大部分時間都在萬點以上,記得2018年初的時候很
多人都說要空台股或買50反,到現在50反幾乎沒人再提了。
--
Tags:
股票
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