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下任美國(guó)總統(tǒng)將面臨難得一見(jiàn)的經(jīng)濟(jì)弱勢(shì)

Shawn Tully
2020-10-13

最有可能使美聯(lián)儲(chǔ)的招數(shù)失效的一個(gè)因素是美元大幅貶值。

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讓我們梳理一下當(dāng)前的經(jīng)濟(jì)形勢(shì)。首先,美聯(lián)儲(chǔ)開(kāi)始采用一種之前從未嘗試過(guò)的大膽策略,希望為受到新冠疫情打擊的美國(guó)經(jīng)濟(jì)重新注入活力,并支撐從股票到住房等各種商品的價(jià)格。美聯(lián)儲(chǔ)的計(jì)劃核心是讓短期利率和長(zhǎng)期收益率曲線低于通脹水平。美聯(lián)儲(chǔ)表示,超低成本的借款將吸引公司投資新工廠和晶圓廠,提高生產(chǎn)效率,刺激增長(zhǎng),并支持那些雖然產(chǎn)出不高但收益率遠(yuǎn)超國(guó)債的資產(chǎn),使其能夠維持高估值。

利率

美聯(lián)儲(chǔ)的立場(chǎng)得到了華爾街和美國(guó)企業(yè)界的廣泛贊揚(yáng)。但這也引發(fā)了一個(gè)令人不安的問(wèn)題:利率如果由市場(chǎng)規(guī)范,給投資者帶來(lái)的回報(bào),通常會(huì)跑贏物價(jià)的整體趨勢(shì)。這其中確有道理。銀行和對(duì)沖基金等大型貸款機(jī)構(gòu),以及購(gòu)買(mǎi)公司債券的投資者,希望即使安全性最高的信貸產(chǎn)品的利息也可以跑贏當(dāng)前的通膨率,因?yàn)樗麄兊馁Y金被長(zhǎng)時(shí)間占用,而且他們需要承擔(dān)消費(fèi)和生產(chǎn)價(jià)格未來(lái)大幅上漲讓他們空手而歸的風(fēng)險(xiǎn),所以需要豐厚的利息作為回報(bào)和額外緩沖。

數(shù)十年來(lái),公司愿意支付高于通脹率的利率,因?yàn)樗麄兡軌蚶觅J款建造或改造工廠,或者發(fā)布有吸引力的新產(chǎn)品。

如今,美聯(lián)儲(chǔ)正在大量購(gòu)買(mǎi)新發(fā)行的政府債券和私人債券,從而大幅推高了這些債券的價(jià)格。極高的價(jià)格導(dǎo)致投資者為這些債券支付的每一美元資金所帶來(lái)的利息收入,下降到美國(guó)近代歷史上前所未有的水平。因此,消費(fèi)價(jià)格指數(shù)的上漲速度超過(guò)了國(guó)債收益率,而最受歡迎的公司債券的收益率為2.3%,比通脹率高出不到一個(gè)百分點(diǎn)。

所以人們有理由擔(dān)心,美聯(lián)儲(chǔ)在信貸市場(chǎng)造成的嚴(yán)重扭曲,可能將引發(fā)被人為低利率傷害的另外一個(gè)經(jīng)濟(jì)堡壘的反彈。美聯(lián)儲(chǔ)高舉經(jīng)濟(jì)刺激的大旗,是否會(huì)促使另外一種宏觀力量向錯(cuò)誤的方向發(fā)展,進(jìn)而破壞經(jīng)濟(jì)增長(zhǎng),沖擊資產(chǎn)的價(jià)格?

美元

最有可能使美聯(lián)儲(chǔ)的招數(shù)失效的一個(gè)因素是美元大幅貶值。駿利亨德森投資基金(Janus Henderson Investors)的全球資產(chǎn)配置負(fù)責(zé)人、加州大學(xué)伯克利分校的金融博士阿什溫·阿蘭卡提出了這種觀點(diǎn)。駿利亨德森投資基金管理的資產(chǎn)規(guī)模超過(guò)3,000億美元。阿蘭卡說(shuō):“政策制定者和投資者大都忽視了美元螺旋式下跌所帶來(lái)的風(fēng)險(xiǎn),他們最終會(huì)自食其果。”(阿蘭卡在駿利亨德森投資基金網(wǎng)站上發(fā)表的一篇文章中提出了這種觀點(diǎn)。)

他表示,雖然美元仍處在高位,但已經(jīng)在貶值。他警告稱(chēng),美聯(lián)儲(chǔ)的政策提高了美元更快貶值的概率。他指出,弱美元帶來(lái)的問(wèn)題是,外國(guó)投資者用于購(gòu)買(mǎi)美國(guó)國(guó)債的美元很快會(huì)大幅減少。外國(guó)投資者對(duì)美國(guó)至關(guān)重要,他們?yōu)槊绹?guó)的巨額赤字和負(fù)債提供了資金,而且如今美國(guó)赤字飆升,更需要外國(guó)投資者。阿蘭卡認(rèn)為,最終的結(jié)果是停滯性通貨膨脹再次出現(xiàn)。

阿蘭卡擔(dān)心的第二種風(fēng)險(xiǎn)是:美國(guó)國(guó)債海外購(gòu)買(mǎi)者急劇減少,美聯(lián)儲(chǔ)無(wú)法掌控局面,因此放棄低息貨幣的政策立場(chǎng),并允許利率上行以重新吸引外國(guó)投資者。筆者認(rèn)為這種情況更有可能發(fā)生。在這個(gè)過(guò)程中,美國(guó)要經(jīng)歷后疫情時(shí)代的新一輪經(jīng)濟(jì)衰退,因?yàn)榻杩畛杀驹黾訒?huì)抑制商業(yè)投資,而且為了控制通貨膨脹,美聯(lián)儲(chǔ)必須維持高利率。

正如阿蘭卡所說(shuō),威脅的根源在于美聯(lián)儲(chǔ)對(duì)于“負(fù)實(shí)際利率”的依賴(lài)。近幾年,美元非常強(qiáng)勢(shì)。彭博指數(shù)(Bloomberg Index)衡量了美元兌一攬子主要貨幣的價(jià)值。該指數(shù)顯示,過(guò)去兩年,美元的價(jià)值比2012年至2015年的水平上漲了約25%。最近一次美元升值源自今年年初之前相對(duì)穩(wěn)健的GDP增長(zhǎng)和美元作為全球儲(chǔ)備貨幣的地位。在這兩個(gè)因素的推動(dòng)下,尤其是在英國(guó)脫歐、油價(jià)暴跌和新興市場(chǎng)混亂等一系列沖擊導(dǎo)致的混亂中,美元作為一種避險(xiǎn)貨幣極具吸引力。

在2018年年底之前,美聯(lián)儲(chǔ)致力于貨幣政策“正?;保@意味著美聯(lián)儲(chǔ)在逐步將基準(zhǔn)利率提高到高于通脹率的水平,從而使“實(shí)際利率”恢復(fù)到正值,并將這種政策作為幾十年的常態(tài)。2018年10月下旬,10年期國(guó)債收益率上漲至超過(guò)3%,這意味著通脹調(diào)整后的收益率為正1%。之后貿(mào)易戰(zhàn)愈演愈烈,投資者對(duì)美聯(lián)儲(chǔ)加息的恐慌導(dǎo)致股市暴跌,迫使美聯(lián)儲(chǔ)改變了政策方向。新冠疫情促使美聯(lián)儲(chǔ)主席杰羅姆·鮑威爾更加堅(jiān)定地承諾,至少在2022年之前,美聯(lián)儲(chǔ)將維持零利率。

這種低息信貸政策使10年期國(guó)債的收益率下降到0.66%,為60年來(lái)的最低水平。1月和2月的通貨膨脹率為2.4%,在疫情最嚴(yán)重的時(shí)期通脹率一度大幅下跌,后來(lái)開(kāi)始上升,到8月達(dá)到1.3%。所以10年期國(guó)債收益率減去通貨膨脹率得出的實(shí)際利率深陷負(fù)區(qū)間,至少為-0.6%甚至更低。

貶值的美元正在做出反擊。自5月以來(lái),美元兌主要貨幣持續(xù)貶值,從疫情之前的高點(diǎn)下跌超過(guò)6%,比2019年的平均水平下跌了5.4%。我們無(wú)法確定導(dǎo)致美元貶值的所有因素,但嚴(yán)重衰退和外國(guó)投資者對(duì)美國(guó)聯(lián)邦負(fù)債驟增的謹(jǐn)慎情緒,無(wú)疑是部分原因。但阿蘭卡認(rèn)為,美元貶值的根本原因在于負(fù)實(shí)際利率。

阿蘭卡說(shuō):“實(shí)際情況是,美元貶值導(dǎo)致以美元結(jié)算的外國(guó)進(jìn)口商品變得更昂貴,因此美國(guó)消費(fèi)者和公司能夠買(mǎi)得起的德國(guó)汽車(chē)和法國(guó)紅酒與香水越來(lái)越少。”所以,在美國(guó)銷(xiāo)售這些商品的海外公司賺取的美鈔越來(lái)越少。阿蘭卡補(bǔ)充說(shuō),大部分現(xiàn)金都被重新投入到非常安全的國(guó)債。如今,外國(guó)投資者手中的美元越來(lái)越少,而與此同時(shí),美國(guó)的赤字預(yù)計(jì)在2020年一年內(nèi),將從不到1萬(wàn)億美元驟增到3.4萬(wàn)億美元,從2021年到2023年赤字將達(dá)到4.4萬(wàn)億美元。

進(jìn)出口

從進(jìn)口和赤字占國(guó)民收入的比重發(fā)生的變化可以看出,外國(guó)投資者賺取的美鈔和美國(guó)政府需要的借款之間存在巨大缺口。2018年和2019年,美國(guó)進(jìn)口的GDP比重平均約為2.5%,赤字的比重約為4.5%,比進(jìn)口高出2個(gè)百分點(diǎn)。2020年,進(jìn)口比重保持穩(wěn)定,但預(yù)算赤字的GDP占比驟增至17%,比進(jìn)口高出14個(gè)百分點(diǎn)。

負(fù)實(shí)際利率使美元更難吸引有海外儲(chǔ)蓄的基金和個(gè)人,因?yàn)橥顿Y美元證券的回報(bào)率甚至無(wú)法與通脹率持平,所以他們會(huì)增加對(duì)本國(guó)的投資,或者投資歐元或日元證券。結(jié)果就是對(duì)美國(guó)國(guó)債的需求下降。對(duì)美國(guó)政府債券的需求也會(huì)陷入低迷:外國(guó)投資者投資墨西哥、巴西或印尼發(fā)行的以美元計(jì)價(jià)的債券,能夠獲得更高的收益。這些國(guó)家的債券收益率在2.2%至3.8%之間。

如果美元繼續(xù)貶值,從海外進(jìn)口的商品價(jià)格會(huì)越來(lái)越高,而且美國(guó)將向市場(chǎng)發(fā)行價(jià)值數(shù)萬(wàn)億美元的國(guó)債,但外國(guó)投資者手頭可以用來(lái)購(gòu)買(mǎi)美國(guó)國(guó)債的美元將越來(lái)越少。截至6月,外國(guó)投資者共持有6.2萬(wàn)億美元的美國(guó)聯(lián)邦債務(wù),約占債務(wù)總量的三分之一,是美國(guó)公民持有的聯(lián)邦債務(wù)的90%。(作為經(jīng)濟(jì)刺激計(jì)劃的一部分,美聯(lián)儲(chǔ)持有的國(guó)債,已經(jīng)達(dá)到所有未清償國(guó)債的17%。)

通貨膨脹

超低利率導(dǎo)致的美元貶值會(huì)加劇阿蘭卡所說(shuō)的“輸入型通貨膨脹”。

阿蘭卡說(shuō):“美聯(lián)儲(chǔ)的政策立場(chǎng)所帶來(lái)的一個(gè)嚴(yán)重風(fēng)險(xiǎn)是,進(jìn)口商品價(jià)格上漲將導(dǎo)致通脹率上漲,但美聯(lián)儲(chǔ)并沒(méi)有上調(diào)利率以維持美元穩(wěn)定。相反,實(shí)際利率仍然深陷負(fù)區(qū)間。”事實(shí)上,美聯(lián)儲(chǔ)已經(jīng)宣布,會(huì)允許通貨膨脹率上漲,不會(huì)加息。所以,美國(guó)消費(fèi)和生產(chǎn)價(jià)格的上漲速度,必定會(huì)超過(guò)國(guó)債收益率,使得美國(guó)國(guó)債越來(lái)越難吸引外國(guó)投資者。這會(huì)導(dǎo)致惡性循環(huán):美元持續(xù)貶值,美國(guó)人購(gòu)買(mǎi)的外國(guó)進(jìn)口商品越來(lái)越少。阿蘭卡預(yù)測(cè)美元會(huì)出現(xiàn)螺旋式下跌,大幅減少外國(guó)投資者購(gòu)買(mǎi)美國(guó)國(guó)債的數(shù)量,而美國(guó)要在避免危機(jī)的情況下維持巨額借款,離不開(kāi)外國(guó)投資者。

危機(jī)會(huì)是什么情形?重要的是不要夸大可能存在的風(fēng)險(xiǎn)。斯坦福大學(xué)(Stanford University)的著名國(guó)際經(jīng)濟(jì)學(xué)家馬特奧·馬基奧里說(shuō):“我不會(huì)根據(jù)美元的短期波動(dòng)進(jìn)行推斷。例如,關(guān)于美元,有許多危言聳聽(tīng)的說(shuō)法,認(rèn)為短期內(nèi)美元會(huì)出現(xiàn)大幅波動(dòng),我認(rèn)為這種觀點(diǎn)有些過(guò)于夸張。然而,美元在國(guó)際貨幣體系中的地位,存在一些至關(guān)重要的長(zhǎng)期問(wèn)題。美國(guó)聯(lián)邦債務(wù)的快速增加是一個(gè)風(fēng)險(xiǎn)因素。另外一個(gè)因素是這些債務(wù)被外國(guó)投資者大量持有?!彼J(rèn)為這些因素并不是直接威脅,而是長(zhǎng)期風(fēng)險(xiǎn)。

市場(chǎng)還是美聯(lián)儲(chǔ)?

阿蘭卡認(rèn)為一記重拳隨時(shí)可能擊出。他說(shuō),隨著外國(guó)投資者撤離,美國(guó)人將不得不自掏腰包填補(bǔ)空缺,額外投入數(shù)萬(wàn)億美元儲(chǔ)蓄購(gòu)買(mǎi)國(guó)債。可供公司使用的儲(chǔ)蓄資金會(huì)減少?,F(xiàn)在無(wú)法確定赤字對(duì)未來(lái)利率的影響,因?yàn)槊缆?lián)儲(chǔ)可能采取更多措施,人為將基準(zhǔn)利率維持在較低水平,這種態(tài)度會(huì)降低所有債券的收益率。無(wú)論如何,政府舉債會(huì)排擠掉經(jīng)濟(jì)增長(zhǎng)必不可少的私人資本,與此同時(shí),美元貶值將加劇通貨膨脹。結(jié)果就是再次發(fā)生停滯性通貨膨脹,重現(xiàn)上世紀(jì)70年代發(fā)生在美國(guó)和在日本持續(xù)20多年的景象。

但還可能會(huì)出現(xiàn)另外一個(gè)結(jié)果。美元嚴(yán)重貶值,因此美聯(lián)儲(chǔ)選擇通過(guò)加息抑制通貨膨脹和使美元升值。當(dāng)然,加息的跡象會(huì)使股市陷入恐慌,而且貨幣緊縮政策將讓美國(guó)再次陷入衰退。但這時(shí)候發(fā)揮主導(dǎo)作用的將是市場(chǎng)而不是美聯(lián)儲(chǔ)。而我們迫切需要的外國(guó)投資者又會(huì)大量持有美國(guó)的避險(xiǎn)貨幣,因?yàn)槊涝粌H是全世界最安全的資產(chǎn),還能再次給投資者帶來(lái)豐厚的回報(bào)。(財(cái)富中文網(wǎng))

翻譯:劉進(jìn)龍

審校:汪皓

讓我們梳理一下當(dāng)前的經(jīng)濟(jì)形勢(shì)。首先,美聯(lián)儲(chǔ)開(kāi)始采用一種之前從未嘗試過(guò)的大膽策略,希望為受到新冠疫情打擊的美國(guó)經(jīng)濟(jì)重新注入活力,并支撐從股票到住房等各種商品的價(jià)格。美聯(lián)儲(chǔ)的計(jì)劃核心是讓短期利率和長(zhǎng)期收益率曲線低于通脹水平。美聯(lián)儲(chǔ)表示,超低成本的借款將吸引公司投資新工廠和晶圓廠,提高生產(chǎn)效率,刺激增長(zhǎng),并支持那些雖然產(chǎn)出不高但收益率遠(yuǎn)超國(guó)債的資產(chǎn),使其能夠維持高估值。

利率

美聯(lián)儲(chǔ)的立場(chǎng)得到了華爾街和美國(guó)企業(yè)界的廣泛贊揚(yáng)。但這也引發(fā)了一個(gè)令人不安的問(wèn)題:利率如果由市場(chǎng)規(guī)范,給投資者帶來(lái)的回報(bào),通常會(huì)跑贏物價(jià)的整體趨勢(shì)。這其中確有道理。銀行和對(duì)沖基金等大型貸款機(jī)構(gòu),以及購(gòu)買(mǎi)公司債券的投資者,希望即使安全性最高的信貸產(chǎn)品的利息也可以跑贏當(dāng)前的通膨率,因?yàn)樗麄兊馁Y金被長(zhǎng)時(shí)間占用,而且他們需要承擔(dān)消費(fèi)和生產(chǎn)價(jià)格未來(lái)大幅上漲讓他們空手而歸的風(fēng)險(xiǎn),所以需要豐厚的利息作為回報(bào)和額外緩沖。

數(shù)十年來(lái),公司愿意支付高于通脹率的利率,因?yàn)樗麄兡軌蚶觅J款建造或改造工廠,或者發(fā)布有吸引力的新產(chǎn)品。

如今,美聯(lián)儲(chǔ)正在大量購(gòu)買(mǎi)新發(fā)行的政府債券和私人債券,從而大幅推高了這些債券的價(jià)格。極高的價(jià)格導(dǎo)致投資者為這些債券支付的每一美元資金所帶來(lái)的利息收入,下降到美國(guó)近代歷史上前所未有的水平。因此,消費(fèi)價(jià)格指數(shù)的上漲速度超過(guò)了國(guó)債收益率,而最受歡迎的公司債券的收益率為2.3%,比通脹率高出不到一個(gè)百分點(diǎn)。

所以人們有理由擔(dān)心,美聯(lián)儲(chǔ)在信貸市場(chǎng)造成的嚴(yán)重扭曲,可能將引發(fā)被人為低利率傷害的另外一個(gè)經(jīng)濟(jì)堡壘的反彈。美聯(lián)儲(chǔ)高舉經(jīng)濟(jì)刺激的大旗,是否會(huì)促使另外一種宏觀力量向錯(cuò)誤的方向發(fā)展,進(jìn)而破壞經(jīng)濟(jì)增長(zhǎng),沖擊資產(chǎn)的價(jià)格?

美元

最有可能使美聯(lián)儲(chǔ)的招數(shù)失效的一個(gè)因素是美元大幅貶值。駿利亨德森投資基金(Janus Henderson Investors)的全球資產(chǎn)配置負(fù)責(zé)人、加州大學(xué)伯克利分校的金融博士阿什溫·阿蘭卡提出了這種觀點(diǎn)。駿利亨德森投資基金管理的資產(chǎn)規(guī)模超過(guò)3,000億美元。阿蘭卡說(shuō):“政策制定者和投資者大都忽視了美元螺旋式下跌所帶來(lái)的風(fēng)險(xiǎn),他們最終會(huì)自食其果?!保ò⑻m卡在駿利亨德森投資基金網(wǎng)站上發(fā)表的一篇文章中提出了這種觀點(diǎn)。)

他表示,雖然美元仍處在高位,但已經(jīng)在貶值。他警告稱(chēng),美聯(lián)儲(chǔ)的政策提高了美元更快貶值的概率。他指出,弱美元帶來(lái)的問(wèn)題是,外國(guó)投資者用于購(gòu)買(mǎi)美國(guó)國(guó)債的美元很快會(huì)大幅減少。外國(guó)投資者對(duì)美國(guó)至關(guān)重要,他們?yōu)槊绹?guó)的巨額赤字和負(fù)債提供了資金,而且如今美國(guó)赤字飆升,更需要外國(guó)投資者。阿蘭卡認(rèn)為,最終的結(jié)果是停滯性通貨膨脹再次出現(xiàn)。

阿蘭卡擔(dān)心的第二種風(fēng)險(xiǎn)是:美國(guó)國(guó)債海外購(gòu)買(mǎi)者急劇減少,美聯(lián)儲(chǔ)無(wú)法掌控局面,因此放棄低息貨幣的政策立場(chǎng),并允許利率上行以重新吸引外國(guó)投資者。筆者認(rèn)為這種情況更有可能發(fā)生。在這個(gè)過(guò)程中,美國(guó)要經(jīng)歷后疫情時(shí)代的新一輪經(jīng)濟(jì)衰退,因?yàn)榻杩畛杀驹黾訒?huì)抑制商業(yè)投資,而且為了控制通貨膨脹,美聯(lián)儲(chǔ)必須維持高利率。

正如阿蘭卡所說(shuō),威脅的根源在于美聯(lián)儲(chǔ)對(duì)于“負(fù)實(shí)際利率”的依賴(lài)。近幾年,美元非常強(qiáng)勢(shì)。彭博指數(shù)(Bloomberg Index)衡量了美元兌一攬子主要貨幣的價(jià)值。該指數(shù)顯示,過(guò)去兩年,美元的價(jià)值比2012年至2015年的水平上漲了約25%。最近一次美元升值源自今年年初之前相對(duì)穩(wěn)健的GDP增長(zhǎng)和美元作為全球儲(chǔ)備貨幣的地位。在這兩個(gè)因素的推動(dòng)下,尤其是在英國(guó)脫歐、油價(jià)暴跌和新興市場(chǎng)混亂等一系列沖擊導(dǎo)致的混亂中,美元作為一種避險(xiǎn)貨幣極具吸引力。

在2018年年底之前,美聯(lián)儲(chǔ)致力于貨幣政策“正?;?,這意味著美聯(lián)儲(chǔ)在逐步將基準(zhǔn)利率提高到高于通脹率的水平,從而使“實(shí)際利率”恢復(fù)到正值,并將這種政策作為幾十年的常態(tài)。2018年10月下旬,10年期國(guó)債收益率上漲至超過(guò)3%,這意味著通脹調(diào)整后的收益率為正1%。之后貿(mào)易戰(zhàn)愈演愈烈,投資者對(duì)美聯(lián)儲(chǔ)加息的恐慌導(dǎo)致股市暴跌,迫使美聯(lián)儲(chǔ)改變了政策方向。新冠疫情促使美聯(lián)儲(chǔ)主席杰羅姆·鮑威爾更加堅(jiān)定地承諾,至少在2022年之前,美聯(lián)儲(chǔ)將維持零利率。

這種低息信貸政策使10年期國(guó)債的收益率下降到0.66%,為60年來(lái)的最低水平。1月和2月的通貨膨脹率為2.4%,在疫情最嚴(yán)重的時(shí)期通脹率一度大幅下跌,后來(lái)開(kāi)始上升,到8月達(dá)到1.3%。所以10年期國(guó)債收益率減去通貨膨脹率得出的實(shí)際利率深陷負(fù)區(qū)間,至少為-0.6%甚至更低。

貶值的美元正在做出反擊。自5月以來(lái),美元兌主要貨幣持續(xù)貶值,從疫情之前的高點(diǎn)下跌超過(guò)6%,比2019年的平均水平下跌了5.4%。我們無(wú)法確定導(dǎo)致美元貶值的所有因素,但嚴(yán)重衰退和外國(guó)投資者對(duì)美國(guó)聯(lián)邦負(fù)債驟增的謹(jǐn)慎情緒,無(wú)疑是部分原因。但阿蘭卡認(rèn)為,美元貶值的根本原因在于負(fù)實(shí)際利率。

阿蘭卡說(shuō):“實(shí)際情況是,美元貶值導(dǎo)致以美元結(jié)算的外國(guó)進(jìn)口商品變得更昂貴,因此美國(guó)消費(fèi)者和公司能夠買(mǎi)得起的德國(guó)汽車(chē)和法國(guó)紅酒與香水越來(lái)越少。”所以,在美國(guó)銷(xiāo)售這些商品的海外公司賺取的美鈔越來(lái)越少。阿蘭卡補(bǔ)充說(shuō),大部分現(xiàn)金都被重新投入到非常安全的國(guó)債。如今,外國(guó)投資者手中的美元越來(lái)越少,而與此同時(shí),美國(guó)的赤字預(yù)計(jì)在2020年一年內(nèi),將從不到1萬(wàn)億美元驟增到3.4萬(wàn)億美元,從2021年到2023年赤字將達(dá)到4.4萬(wàn)億美元。

進(jìn)出口

從進(jìn)口和赤字占國(guó)民收入的比重發(fā)生的變化可以看出,外國(guó)投資者賺取的美鈔和美國(guó)政府需要的借款之間存在巨大缺口。2018年和2019年,美國(guó)進(jìn)口的GDP比重平均約為2.5%,赤字的比重約為4.5%,比進(jìn)口高出2個(gè)百分點(diǎn)。2020年,進(jìn)口比重保持穩(wěn)定,但預(yù)算赤字的GDP占比驟增至17%,比進(jìn)口高出14個(gè)百分點(diǎn)。

負(fù)實(shí)際利率使美元更難吸引有海外儲(chǔ)蓄的基金和個(gè)人,因?yàn)橥顿Y美元證券的回報(bào)率甚至無(wú)法與通脹率持平,所以他們會(huì)增加對(duì)本國(guó)的投資,或者投資歐元或日元證券。結(jié)果就是對(duì)美國(guó)國(guó)債的需求下降。對(duì)美國(guó)政府債券的需求也會(huì)陷入低迷:外國(guó)投資者投資墨西哥、巴西或印尼發(fā)行的以美元計(jì)價(jià)的債券,能夠獲得更高的收益。這些國(guó)家的債券收益率在2.2%至3.8%之間。

如果美元繼續(xù)貶值,從海外進(jìn)口的商品價(jià)格會(huì)越來(lái)越高,而且美國(guó)將向市場(chǎng)發(fā)行價(jià)值數(shù)萬(wàn)億美元的國(guó)債,但外國(guó)投資者手頭可以用來(lái)購(gòu)買(mǎi)美國(guó)國(guó)債的美元將越來(lái)越少。截至6月,外國(guó)投資者共持有6.2萬(wàn)億美元的美國(guó)聯(lián)邦債務(wù),約占債務(wù)總量的三分之一,是美國(guó)公民持有的聯(lián)邦債務(wù)的90%。(作為經(jīng)濟(jì)刺激計(jì)劃的一部分,美聯(lián)儲(chǔ)持有的國(guó)債,已經(jīng)達(dá)到所有未清償國(guó)債的17%。)

通貨膨脹

超低利率導(dǎo)致的美元貶值會(huì)加劇阿蘭卡所說(shuō)的“輸入型通貨膨脹”。

阿蘭卡說(shuō):“美聯(lián)儲(chǔ)的政策立場(chǎng)所帶來(lái)的一個(gè)嚴(yán)重風(fēng)險(xiǎn)是,進(jìn)口商品價(jià)格上漲將導(dǎo)致通脹率上漲,但美聯(lián)儲(chǔ)并沒(méi)有上調(diào)利率以維持美元穩(wěn)定。相反,實(shí)際利率仍然深陷負(fù)區(qū)間?!笔聦?shí)上,美聯(lián)儲(chǔ)已經(jīng)宣布,會(huì)允許通貨膨脹率上漲,不會(huì)加息。所以,美國(guó)消費(fèi)和生產(chǎn)價(jià)格的上漲速度,必定會(huì)超過(guò)國(guó)債收益率,使得美國(guó)國(guó)債越來(lái)越難吸引外國(guó)投資者。這會(huì)導(dǎo)致惡性循環(huán):美元持續(xù)貶值,美國(guó)人購(gòu)買(mǎi)的外國(guó)進(jìn)口商品越來(lái)越少。阿蘭卡預(yù)測(cè)美元會(huì)出現(xiàn)螺旋式下跌,大幅減少外國(guó)投資者購(gòu)買(mǎi)美國(guó)國(guó)債的數(shù)量,而美國(guó)要在避免危機(jī)的情況下維持巨額借款,離不開(kāi)外國(guó)投資者。

危機(jī)會(huì)是什么情形?重要的是不要夸大可能存在的風(fēng)險(xiǎn)。斯坦福大學(xué)(Stanford University)的著名國(guó)際經(jīng)濟(jì)學(xué)家馬特奧·馬基奧里說(shuō):“我不會(huì)根據(jù)美元的短期波動(dòng)進(jìn)行推斷。例如,關(guān)于美元,有許多危言聳聽(tīng)的說(shuō)法,認(rèn)為短期內(nèi)美元會(huì)出現(xiàn)大幅波動(dòng),我認(rèn)為這種觀點(diǎn)有些過(guò)于夸張。然而,美元在國(guó)際貨幣體系中的地位,存在一些至關(guān)重要的長(zhǎng)期問(wèn)題。美國(guó)聯(lián)邦債務(wù)的快速增加是一個(gè)風(fēng)險(xiǎn)因素。另外一個(gè)因素是這些債務(wù)被外國(guó)投資者大量持有?!彼J(rèn)為這些因素并不是直接威脅,而是長(zhǎng)期風(fēng)險(xiǎn)。

市場(chǎng)還是美聯(lián)儲(chǔ)?

阿蘭卡認(rèn)為一記重拳隨時(shí)可能擊出。他說(shuō),隨著外國(guó)投資者撤離,美國(guó)人將不得不自掏腰包填補(bǔ)空缺,額外投入數(shù)萬(wàn)億美元儲(chǔ)蓄購(gòu)買(mǎi)國(guó)債。可供公司使用的儲(chǔ)蓄資金會(huì)減少?,F(xiàn)在無(wú)法確定赤字對(duì)未來(lái)利率的影響,因?yàn)槊缆?lián)儲(chǔ)可能采取更多措施,人為將基準(zhǔn)利率維持在較低水平,這種態(tài)度會(huì)降低所有債券的收益率。無(wú)論如何,政府舉債會(huì)排擠掉經(jīng)濟(jì)增長(zhǎng)必不可少的私人資本,與此同時(shí),美元貶值將加劇通貨膨脹。結(jié)果就是再次發(fā)生停滯性通貨膨脹,重現(xiàn)上世紀(jì)70年代發(fā)生在美國(guó)和在日本持續(xù)20多年的景象。

但還可能會(huì)出現(xiàn)另外一個(gè)結(jié)果。美元嚴(yán)重貶值,因此美聯(lián)儲(chǔ)選擇通過(guò)加息抑制通貨膨脹和使美元升值。當(dāng)然,加息的跡象會(huì)使股市陷入恐慌,而且貨幣緊縮政策將讓美國(guó)再次陷入衰退。但這時(shí)候發(fā)揮主導(dǎo)作用的將是市場(chǎng)而不是美聯(lián)儲(chǔ)。而我們迫切需要的外國(guó)投資者又會(huì)大量持有美國(guó)的避險(xiǎn)貨幣,因?yàn)槊涝粌H是全世界最安全的資產(chǎn),還能再次給投資者帶來(lái)豐厚的回報(bào)。(財(cái)富中文網(wǎng))

翻譯:劉進(jìn)龍

審校:汪皓

Let's take stock. To start with, the Federal Reserve has embarked on a daring, never-before-tried strategy to recharge the COVID-stricken economy and support prices of everything from stocks to houses. The Fed's plan centers on holding short-term interest rates, and possibly a long stretch of the yield curve, below the level of inflation. Supercheap borrowing, the Fed reckons, will entice companies to invest in new plants and fabs, spurring productivity and growth, and supporting assets that may not yield much, but they'd beat Treasurys by such a wide margin that they sustain their lofty valuations.

Interest rates

The Fed's stance is winning widespread praise from Wall Street and corporate America. But it also raises a nagging issue: Interest rates, left to the market, typically give investors a return that exceeds the trend in overall prices, often by a lot. That makes sense. Big lenders such as banks and hedge funds, and folks who buy corporate bonds, want interest payments that are well above today’s pace of inflation even on the safest credits, as payment—an extra cushion—for tying up their money for years and shouldering the risk that unforeseen future spikes in consumer and producer prices could wipe out their gains.

For decades, companies have willingly paid several points over inflation because they can make much more using that money to build or retool factories or launch winning new products.

Now the Fed is buying such a gigantic portion of all newly issued government and private bonds that it’s relentlessly pushing up their prices. Those super-high prices have shrunk the cents in interest that investors collect for every dollar they're paying for the bonds to lows never before witnessed in modern U.S. history. Hence, the consumer price index is now rising faster than what Treasurys are yielding, and top-rated corporate bonds are offering 2.3%, beating inflation by less than a point.

So it's logical to worry that by creating a huge distortion in the credit markets, the Fed could trigger a backlash from another bulwark of the economy that's damaged by artificially low rates. By pulling hard on the stimulus lever, will the Fed push another set of macro forces in motion that go in the wrong direction, undermining growth and hammering asset prices?

The dollar

The factor most likely to blunt the Fed's offensive is a steep fall in the dollar. That's the view of Ashwin Alankar, head of Global Asset Allocation at Janus Henderson Investors, a firm with over $300 billion under management, and a Ph.D. in finance from Berkeley. "Policymakers and investors are mostly overlooking the risk of a downward spiral in the dollar at their own peril," says Alankar. (Alankar makes his case in this excellent piece on Janus Henderson's website.)

Alankar notes that the dollar is already declining, albeit from high levels, and cautions the Fed's policies lift the probability that drop will accelerate. The problem posed by a weak greenback, he argues, is that the foreign investors who've been essential to funding our big deficits and debt, and whom we need more than ever now that shortfalls are exploding, will soon have far fewer dollars to buy our Treasurys. Alankar thinks the endgame could be the return of stagflation.

A second risk that Alankar also fears, and this writer deems more probable: The pullback in overseas buyers of Treasuries is so violent that the Fed loses its grip, ditching its easy money stance and allowing a jump in rates to lure back foreign investors. In the process, the U.S. endures a new, post-pandemic recession as rising borrowing costs curb business investment, and the need to tame inflation forces the Fed to keep rates high.

As Alankar points out, it's the Fed's reliance on "negative real rates" that poses the threat. In recent years, the dollar's been extremely strong. According to the Bloomberg Index that measures its value versus a basket of major currencies, the dollar in the past two years has hovered roughly 25% above its level from 2012 to 2015. Its recent buoyancy arises from relatively robust GDP growth through early this year and its status as the world's reserve currency. That confluence has made the greenback especially attractive as a safe haven in the turbulence caused by shocks such as Brexit, the collapse in oil prices, and turmoil in emerging markets.

Until late 2018, the Fed was "normalizing," meaning that it was gradually raising its benchmark rate to exceed the pace of inflation, hence orchestrating a return to positive "real rates" that have been the norm for decades. In late October 2018, the 10-year Treasury yield rose to over 3%, meaning that the inflation-adjusted number reached a positive 1%. Then, the worsening trade war and a selloff in stocks—unleashed by investor panic over those rising rates—prompted the Fed to reverse course. The pandemic propelled Chairman Jerome Powell to double down, pledging to hold the Fed funds rate at zero through at least 2022.

That cheap-credit policy has dropped the yield on 10-year Treasurys to 0.66%, the lowest reading in 60 years. Inflation was running at 2.4% in January and February and, after collapsing in the darkest days of the pandemic, is on the rise, hitting 1.3% in August. So the real rate, the 10-year yield minus inflation, is in negative territory by at least 0.6% and likely even more.

It's a falling dollar that's delivering the counterpunch. Since May, its value has dropped against that of major currencies, declining over 6% from its pre-pandemic high and settling 5.4% below its average for 2019. It's impossible to identify all the factors responsible for the pullback: The deep recession and foreign investors' wariness over the gigantic increases in U.S. federal debt doubtless are contributing. But for Alankar, the downward pull comes principally from those subzero real rates.

"What's happening is that the dollar's weakness is making foreign imports more expensive in dollars, so that American consumers and companies can afford fewer German cars and French wines and perfume," says Alankar. Hence, overseas companies that sell those products stateside are collecting fewer dollars. Alankar adds that most of the cash gets recycled into super-safe Treasurys. Now foreigners are amassing fewer dollars at the same time our deficit, in a single year, has exploded from just under $1 trillion to a projected $3.4 trillion in 2020, with $4.4 trillion in shortfalls to come from 2021 to 2023.

Imports and exports

The exploding gap between the dollars foreigners are reaping and the dollars the U.S. government needs to borrow is illustrated by the shift in the shares of national income going to imports versus deficits. In 2018 and 2019, the imports averaged roughly 2.5 points of GDP, trailing our 4.5% deficits by two points. In 2020, the share of imports is stable, while the budget shortfall has swelled to 17% of GDP, dwarfing the imports share by over 14 points.

Negative real rates also make dollars less attractive to funds and folks with savings abroad, so they will increasingly invest in their home countries, or invest elsewhere in euro or yen securities, because our returns don't even match inflation. The upshot is lower demand for U.S. Treasurys. Also curbing demand for our debt: Foreign investors can get much higher yields on dollar-denominated debt issued by Mexico, Brazil, or Indonesia. Their bonds are all yielding from 2.2% to 3.8%.

If the dollar keeps falling, products from abroad will get more and more expensive, and foreigners will have fewer and fewer dollars to buy the fresh trillions in Treasurys flooding the market. As of June, foreigners held $6.2 trillion in U.S. federal debt, almost one-third of the total and 90% of the amount owned by U.S. citizens. (As part of its stimulus plan, the Fed itself has accumulated 17% of all outstanding Treasuries.)

Inflation

A falling dollar, dragged down by ultralow rates, will stoke what Alankar calls "imported inflation."

"The big danger that stance creates is that higher import prices will lead to higher inflation, yet rates don't rise to stabilize the dollar. Instead, real rates stay negative," says Alankar. Indeed, the Fed has declared that it will allow inflation, if it picks up, to run hot without raising rates. So U.S. consumer and producer prices are destined to rise faster than the yield on Treasurys, making our bonds increasingly less enticing to foreign investors. That could create a vicious cycle: As the dollar keeps falling, Americans buy fewer and fewer foreign goods. Alankar foresees the possibility of a downward spiral in the dollar that would severely curtail the foreign purchases of Treasurys sorely needed to sustain our gigantic borrowing without causing a crisis.

What would that crisis look like? It's important not to overstate the potential perils. "I would not extrapolate from short-term movements in the dollar," says Matteo Maggiori of Stanford University, a top international economist. "For example, a lot of dollar alarmism for a few percentage movement in the short run seems to me overstated. However, there are some important long-term questions about the dollar's role in the international monetary system. The rapid increase in U.S. federal debt is one risk factor. The large foreign holdings of this debt is another." Maggiori views these factors not as an immediate threat but as long-term risks.

The market or the Fed?

Alankar believes a haymaker is bunching its fist and could strike at any time. As foreigners pull back, he says, Americans will be forced to fill the breach by plowing trillions more of their savings into Treasuries. The pool of those savings available to businesses would shrink. It's unclear what effect that shortage would have on future rates, because the Fed might take more extraordinary measures to hold its benchmark artificially low, a posture that could depress yields on all bonds. In any case, government borrowing would "crowd out" much of the private capital needed to fund new growth, at the same time the falling dollar feeds inflation. Result: stagflation reminiscent of the U.S. in the 1970s, and Japan for more than two decades.

But another outcome is also possible. The dollar's fall could become so severe that the Fed throws up its hands and hikes rates to wrestle down inflation and boost the dollar. Of course, the stock market freaks out at the very hint of higher rates, and the tightening would throw the U.S. into another recession. But the market, not the Fed, would be back in charge. And the foreign investors we need so desperately would return en masse to the U.S. haven that's not only the safest in the world but also one that is free to offer a decent return once again.

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