如果大家都買ETF不買個股? - 股票

By Harry
at 2020-11-29T04:42
at 2020-11-29T04:42
Table of Contents
如果大家都買ETF不買個股?
這其實是個好問題 但到目前都還沒看到有人真的在針對這個問題回答
蠻訝異的 反而是在戰買大盤跟買個股 或定期定額之類的問題
這些真的不需要在爭論了 買進大盤就是可以贏過8成以上的散戶
而一次買齊buy and hold 或定期定額都沒差
太多實證論文 太多data告訴大家這件事了
那為什麼 「大家都買ETF不買個股會如何?」 依然是一個好問題呢?
因為實務面上大盤ETF 和真正的大盤 還是有差距的
大盤ETF 美國的SPY或台灣的0050 實務上操作的方式是
每天盤後 所謂的authorized participant會自行買進一籃子股票申購ETF 或贖回ETF
藉由這樣套利的動作 來讓ETF的價值和和一籃子股票的價值維持一定
而這一個很重要的前提是股票本身的價格和其潛在價值相去不遠
如果相信市場效率假說 一般來說這前提並沒有太大的問題
尤其要ETF產生問題 不只是單一股票產生離譜的錯價 是要整籃子股票都產生離譜錯價
才有可能讓整個ETF產生系統性的錯價
一部分學者專家擔心的是 過去ETF佔整個股票市場的市值不大時 這幾乎不可能是問題
但現在ETF已經佔了美國股市整體的四成市值了
假如這個比例持續升高 最後都沒有人在做主動式投資 為股票做價值發現
那是否ETF本身的買賣壓會反過來影響股票價格 讓其偏離其潛在價值呢?
這個問題在邏輯上是存在的
目前也有蠻多學者在架模型模擬這件事
但目前大多數人都還是很樂觀的 只要整體市值有5~10%的主動式投資者
基本上 上述的問題都不太可能存在
換句話說 就算ETF佔股票市值的8成 ETF的存在也不會影響到市場效率性
--
這其實是個好問題 但到目前都還沒看到有人真的在針對這個問題回答
蠻訝異的 反而是在戰買大盤跟買個股 或定期定額之類的問題
這些真的不需要在爭論了 買進大盤就是可以贏過8成以上的散戶
而一次買齊buy and hold 或定期定額都沒差
太多實證論文 太多data告訴大家這件事了
那為什麼 「大家都買ETF不買個股會如何?」 依然是一個好問題呢?
因為實務面上大盤ETF 和真正的大盤 還是有差距的
大盤ETF 美國的SPY或台灣的0050 實務上操作的方式是
每天盤後 所謂的authorized participant會自行買進一籃子股票申購ETF 或贖回ETF
藉由這樣套利的動作 來讓ETF的價值和和一籃子股票的價值維持一定
而這一個很重要的前提是股票本身的價格和其潛在價值相去不遠
如果相信市場效率假說 一般來說這前提並沒有太大的問題
尤其要ETF產生問題 不只是單一股票產生離譜的錯價 是要整籃子股票都產生離譜錯價
才有可能讓整個ETF產生系統性的錯價
一部分學者專家擔心的是 過去ETF佔整個股票市場的市值不大時 這幾乎不可能是問題
但現在ETF已經佔了美國股市整體的四成市值了
假如這個比例持續升高 最後都沒有人在做主動式投資 為股票做價值發現
那是否ETF本身的買賣壓會反過來影響股票價格 讓其偏離其潛在價值呢?
這個問題在邏輯上是存在的
目前也有蠻多學者在架模型模擬這件事
但目前大多數人都還是很樂觀的 只要整體市值有5~10%的主動式投資者
基本上 上述的問題都不太可能存在
換句話說 就算ETF佔股票市值的8成 ETF的存在也不會影響到市場效率性
--
Tags:
股票
All Comments

By Cara
at 2020-12-03T18:12
at 2020-12-03T18:12

By Christine
at 2020-12-04T14:15
at 2020-12-04T14:15

By Kama
at 2020-12-06T03:37
at 2020-12-06T03:37

By Bennie
at 2020-12-07T05:46
at 2020-12-07T05:46

By Charlotte
at 2020-12-08T04:31
at 2020-12-08T04:31

By Selena
at 2020-12-09T09:31
at 2020-12-09T09:31

By Tom
at 2020-12-11T21:23
at 2020-12-11T21:23

By Donna
at 2020-12-16T20:52
at 2020-12-16T20:52

By Mary
at 2020-12-21T17:54
at 2020-12-21T17:54

By Elma
at 2020-12-24T06:19
at 2020-12-24T06:19

By William
at 2020-12-26T00:12
at 2020-12-26T00:12

By Ida
at 2020-12-30T00:44
at 2020-12-30T00:44

By Ida
at 2020-12-31T07:41
at 2020-12-31T07:41

By Yuri
at 2020-12-31T18:09
at 2020-12-31T18:09

By Jacky
at 2021-01-04T13:03
at 2021-01-04T13:03

By Ophelia
at 2021-01-06T21:29
at 2021-01-06T21:29

By Oliver
at 2021-01-10T11:58
at 2021-01-10T11:58

By Oliver
at 2021-01-15T07:29
at 2021-01-15T07:29

By Doris
at 2021-01-17T14:20
at 2021-01-17T14:20

By Todd Johnson
at 2021-01-19T18:00
at 2021-01-19T18:00

By Margaret
at 2021-01-19T20:14
at 2021-01-19T20:14

By Jack
at 2021-01-24T14:50
at 2021-01-24T14:50

By Todd Johnson
at 2021-01-28T04:30
at 2021-01-28T04:30

By Sarah
at 2021-01-31T11:02
at 2021-01-31T11:02

By Agnes
at 2021-02-01T12:48
at 2021-02-01T12:48

By Ethan
at 2021-02-01T15:37
at 2021-02-01T15:37

By Isla
at 2021-02-05T20:05
at 2021-02-05T20:05

By Mason
at 2021-02-10T06:40
at 2021-02-10T06:40

By Blanche
at 2021-02-13T14:08
at 2021-02-13T14:08

By Irma
at 2021-02-17T08:03
at 2021-02-17T08:03

By Bethany
at 2021-02-20T02:11
at 2021-02-20T02:11

By Valerie
at 2021-02-24T23:41
at 2021-02-24T23:41

By Wallis
at 2021-02-25T01:16
at 2021-02-25T01:16

By John
at 2021-02-27T15:29
at 2021-02-27T15:29

By Olga
at 2021-03-03T15:36
at 2021-03-03T15:36

By Catherine
at 2021-03-06T02:09
at 2021-03-06T02:09

By Gilbert
at 2021-03-09T05:22
at 2021-03-09T05:22

By Liam
at 2021-03-12T16:28
at 2021-03-12T16:28

By Zanna
at 2021-03-16T00:59
at 2021-03-16T00:59

By Joseph
at 2021-03-19T02:16
at 2021-03-19T02:16

By Callum
at 2021-03-21T17:04
at 2021-03-21T17:04

By Odelette
at 2021-03-25T07:03
at 2021-03-25T07:03

By Harry
at 2021-03-27T09:53
at 2021-03-27T09:53

By Lauren
at 2021-03-30T06:58
at 2021-03-30T06:58

By Edith
at 2021-04-02T11:25
at 2021-04-02T11:25

By Ina
at 2021-04-04T08:37
at 2021-04-04T08:37

By Kama
at 2021-04-05T23:19
at 2021-04-05T23:19

By Freda
at 2021-04-10T14:38
at 2021-04-10T14:38

By Suhail Hany
at 2021-04-12T04:00
at 2021-04-12T04:00

By Sandy
at 2021-04-12T11:22
at 2021-04-12T11:22

By Franklin
at 2021-04-17T08:11
at 2021-04-17T08:11

By Hedwig
at 2021-04-21T14:40
at 2021-04-21T14:40

By Bennie
at 2021-04-21T23:00
at 2021-04-21T23:00

By Gary
at 2021-04-25T04:08
at 2021-04-25T04:08

By Enid
at 2021-04-27T17:51
at 2021-04-27T17:51

By Ethan
at 2021-05-02T05:27
at 2021-05-02T05:27

By Margaret
at 2021-05-06T07:56
at 2021-05-06T07:56

By Regina
at 2021-05-09T05:24
at 2021-05-09T05:24

By Connor
at 2021-05-10T19:12
at 2021-05-10T19:12

By Olivia
at 2021-05-13T00:03
at 2021-05-13T00:03

By Victoria
at 2021-05-16T15:24
at 2021-05-16T15:24

By Emma
at 2021-05-16T16:39
at 2021-05-16T16:39

By Michael
at 2021-05-20T14:49
at 2021-05-20T14:49
Related Posts
1785光洋科-MSCI多

By Iris
at 2020-11-29T03:43
at 2020-11-29T03:43
如果大家都買ETF不買個股?

By Jack
at 2020-11-29T02:52
at 2020-11-29T02:52
原來勞動基金投資組長還兼投顧啊?

By Lucy
at 2020-11-29T02:15
at 2020-11-29T02:15
陸公安懸賞科技廠研發部台幹13萬元

By Catherine
at 2020-11-29T01:17
at 2020-11-29T01:17
雪崩式下滑?華為手機明年市佔恐連 5%

By Kelly
at 2020-11-29T00:47
at 2020-11-29T00:47