為什麼我選擇指數化投資(二) - 股票

By Catherine
at 2019-02-09T08:50
at 2019-02-09T08:50
Table of Contents
其實覺得這沒什麼好吵的
主動跟被動其實一線之隔
任何投資都是一種主動的觀點,被動投資亦然,只要你持有部位,你就有觀點
投資收益的來源可以分幾個層次
1.全球股債匯房原物料
2.已開發國家/新興市場
3.國家選擇
4.板塊選擇(舉例 科技業)
5.產業選擇(電腦產業)
6.表達觀點的資產(個股或公司債)
常講的被動投資美股其實本身就是一種主動選擇了,應該想想為何你不去購買全球股市ETF
或歐洲股市ETF或日本股市ETF?
索羅斯作為高回報的主動基金經理人,許多時候他做的其實是高階的資產配置,也就是上面
的1,2,3點,重點決定資產類別,看新興市場情況,看先進國家情況,再關注個別國家
然後再把資金交給認可的挑選板塊跟產業跟個股的基金經理人,也就是負責4,5,6。所以有
可能索羅斯看錯中國A股的走勢,A股大盤假設下跌5%,但股票基金經理選股創造10%的alpha,
最後中國的部位賺5%。
理論上投資主動的股票共同基金,你也要把基金經理的表現跟大盤比較,所以你是同時投資
指數跟那個基金經理的alpha創造能力。
而被動投資ETF只是去除基金經理的alpha罷了。然而,被動投資並沒有解決資產配置,先進
新興,國家選擇的問題,這些還是要主動去選擇的。
索羅斯年輕時,跟吉姆羅傑斯高槓桿買賣股債匯原物料,2000年就退休,搞fund of fund,
可以看成被動了,但2007年看情況不對,又重出江湖,做多新興放空美國,07賺08賠,算是
沒轉沒賠的度過金融危機。他後期到底被動還主動?
吉姆羅傑斯量子基金十年回報率4200%,老了說很難想像年輕承擔那樣的高風險晚上怎麼睡得
著,90年代末搞了個羅傑斯原物料指數,這指數08年前也很賺。他年輕積極主動,老了被動
。
主動跟被動不是一刀切的,人生在世每個決定無論有沒有主動去選擇,都是選擇,都有觀點
。
看到拿標普五百當標的就要反問,為何不是放錢到全球股市,為何不是50%美股50%日股,為
何不放錢到REITs,新興市場債券或是原物料指數?
反問,債券指數風險低回報低,那為何不槓桿到跟股票一樣的波動率?說不定還更高的回報
率~
補充一下,我認為被動跟主動的選擇是人生觀的體現,其實金融市場跟真實社會是很接近的
。假設台灣GDP成長為3%,一個人的收入成長遠大於3%,這個人就創造了Alpha,一定是從別人
身上獲得了收入。
最明顯的例子是創業,創業成功,收入大增,遠超過經濟體的成長,意味從顧客勞工供應商
債權人其他股東競爭者身上獲取收入。
選擇beta,就是跟著台灣經濟慢慢成長,風險小回報低
選擇Alpha,就是相信社會很多資源未被利用,可以創業利用,風險高回報高。(或用政治手
段,特權)
除非投資人都全能無所不知,不然金融市場要真的為這些真實世界的資產準確定價,感覺十
分困難,真實世界本身就難以預期了。
所以應該是有Alpha的,只是要跟創業家一樣有眼光跟運氣才能得到。
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