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這一指標(biāo)顯示,美股正在牛轉(zhuǎn)熊

Shawn Tully
2021-03-17

購買股票的最佳時機(jī)是利率超高而市盈率倍數(shù)極低的情景,但今天的情況卻截然相反。

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本周,華爾街投資者為標(biāo)普500指數(shù)(S&P 500)創(chuàng)歷史新高歡呼雀躍。美國正在大規(guī)模復(fù)工,而美國總統(tǒng)喬·拜登剛剛簽署通過的1.9萬億美元紓困法案有望大幅刺激消費者支出。在這兩個因素的推動下,美國即將迎來經(jīng)濟(jì)繁榮,這讓標(biāo)普500指數(shù)的上漲顯得合情合理。但這些樂觀主義者的想法根本不切實際,因為這些人忽視了他們解釋為什么能夠長時間維持當(dāng)前的股價時經(jīng)常用到的一個指標(biāo),出現(xiàn)了大幅度的負(fù)面轉(zhuǎn)變。

這個指標(biāo)就是耶魯大學(xué)(Yale University)的著名經(jīng)濟(jì)學(xué)家羅伯特·席勒提出的“超額周期調(diào)整性市盈率收益率”。這個指標(biāo)是席勒對經(jīng)典的周期調(diào)整性市盈率(CAPE)的擴(kuò)展。CAPE衡量了按照歷史標(biāo)準(zhǔn)股票估值過高還是過低。席勒采用過去十年的通脹調(diào)整后平均利潤作為分母,拉平了波峰和波谷。因為這種極端行情會在收益增長時讓股票顯得定價過低,而在收益下跌但必然會反彈時可能讓股票顯得定價過高。(分子是標(biāo)普指數(shù)。)

樂觀的投資者并不會過多談?wù)摮R?guī)CAPE,因為它早已亮起了紅燈。現(xiàn)在CAPE為35.65倍。這已經(jīng)超過了1929年的33倍和2007年的28倍。所以常規(guī)CAPE意味著股市出現(xiàn)大幅回調(diào)的可能性遠(yuǎn)高于持續(xù)上漲的可能性。

然而,超額CAPE收益率將牛市支持者們解釋大盤股為什么總體上依舊值得買入的理由考慮在內(nèi)。超額CAPE收益率將長期債券利率作為一個因素。直到最近,長期債券利率始終維持在極低的水平。

這種超低債券收益率給一種觀點奠定了基礎(chǔ),那就是只要股票價格看上去遠(yuǎn)低于債券,投資者的資金就會繼續(xù)涌入股市。(債券價格的走勢與其收益率呈負(fù)相關(guān)的關(guān)系,收益率下跌時債券價格上漲。)換一種更理性的說法就是,從2018年末開始大幅下跌的美國國債收益率大大降低了未來公司利潤的“貼現(xiàn)率”。通過簡單的計算,貼現(xiàn)率減低會提高一個特定利潤流的“現(xiàn)值”,并大幅提高股價。似乎很有道理。

問題在于,支撐樂觀投資者的理由的超低利率必須始終維持在較低水平,才可以證明他們是正確的。而這種情況幾乎從未發(fā)生過。現(xiàn)在,我們正在從頭見證一種可能的趨勢:債券收益率反彈到更正常的水平,尤其是在樂觀投資者們眼中的經(jīng)濟(jì)繁榮即將到來的情況下。這兩種觀點一方面認(rèn)為復(fù)工的公司會渴望在經(jīng)濟(jì)繁榮時期大舉擴(kuò)張,另一方面卻認(rèn)為雖然資本需求旺盛,但利率能夠維持在歷史最低點。這實際上似乎是自相矛盾的。

3月12日,標(biāo)普指數(shù)達(dá)到3,939點的最高點一天之后,10年期美國國債(長期債券)收益率達(dá)到1.62%。這比年初上漲了0.69個百分點,自去年8月以來上漲了1.11個百分點。在去年11月4日,10年期國債收益率還只有0.78%。目前的長期債券收益率處在2020年1月末以來的最高水平。

為什么直到最近債券收益率似乎一直有利于短線投資者?這是因為長期債券利率遠(yuǎn)遠(yuǎn)落后于通脹率,這意味著“實際收益率”處在較深的負(fù)區(qū)間,這在歷史上是極其罕見的。這種現(xiàn)象使席勒的超額CAPE明顯有利于股票,讓它深受華爾街投資者的喜愛,雖然他們對常規(guī)CAPE避而不談。超額CAPE收益率是標(biāo)普指數(shù)收益率減去10年期國債通脹調(diào)整收益率的差。標(biāo)普指數(shù)收益率與通脹調(diào)整市盈率呈負(fù)相關(guān)的關(guān)系,代表公司在股票中投資每一美元可以實現(xiàn)的收益。因此,該指數(shù)測量的是股票收益與超級安全的債券收益的差額。

在9月末,超額CAPE收益率為4.33%。按照席勒的市盈率倍數(shù)約31倍,股票的收益率只有3.25%。但10年國債的收益率卻低至0.68%,遠(yuǎn)低于1.76%的通脹率。兩者的差額所代表的10年期國債“實際”收益率為負(fù)1.08%。股票收益率領(lǐng)先于債券4.33%,看起來確實幅度很大。

但值得注意的是,股票之所以看起來有利于投資,是因為當(dāng)時債券的收益不足以支付你的租金和食品雜貨賬單。雖然股票的收益似乎遠(yuǎn)高于債券,但它們能夠承諾的“實際”收益率只有3.25%。考慮到未來約2%的通脹率,股票收益率也只有5.35%,與大部分市場策略師預(yù)測的兩位數(shù)的未來收益率相去甚遠(yuǎn)。

華爾街所看重的基準(zhǔn)面現(xiàn)在表現(xiàn)如何?目前的通脹率為1.61%。突然之間,它與10年期國債1.62%的收益率相差無幾。實際利率擺脫了負(fù)區(qū)間,與通脹率持平。與此同時,標(biāo)普500指數(shù)雖然度過了緊張不安的幾天,但卻再創(chuàng)新高,根本沒有受到10年期國債收益率大幅上漲的影響。當(dāng)然,在實際收益率上漲超過1個百分點的同時,標(biāo)普500指數(shù)的上漲降低了席勒的收益率。截至3月11日,席勒的收益率從9月的3.25%下降到只有2.81%(與35.6倍的CAPE呈負(fù)相關(guān)的關(guān)系)。

由于實際利率為零,因此超額CAPE與CAPE收益率完全相同,均為2.81%。股市無法在負(fù)實際利率中獲得任何幫助。根據(jù)席勒的數(shù)據(jù),最有可能的結(jié)果是股市的年收益率只有4.8%,即2.81%的收益率加2%的通脹率。接下來就是致命一擊:標(biāo)普指數(shù)的收益率領(lǐng)先于長期債券的比例要恢復(fù)到9月的4.3%,席勒市盈率需要從35.6倍下降到23倍,而標(biāo)普指數(shù)將從3,939點下跌到2,544點。

當(dāng)然,更高利率可能比快速經(jīng)濟(jì)增長更早到來。在這種情況下,更高的收益可以抵消利率上行帶來的下行壓力。但分析師們已經(jīng)提出了不切實際的利潤預(yù)測,試圖為超高估值尋找合理的理由。謹(jǐn)慎的觀點是,實際利率將恢復(fù)正常,利潤不會像人們普遍以為的那樣超過2019年的最高水平,而且標(biāo)普指數(shù)將進(jìn)入回調(diào)區(qū)間。

購買股票的最佳時機(jī)是利率超高而市盈率倍數(shù)極低的情景。但今天的情況卻截然相反。經(jīng)濟(jì)會恢復(fù)正常。這對樂觀的投資者而言似乎是好消息。但事實上并非如此。股市也會恢復(fù)正常。不過這肯定會讓投資者大失所望。(財富中文網(wǎng))

翻譯:劉進(jìn)龍

審校:汪皓

本周,華爾街投資者為標(biāo)普500指數(shù)(S&P 500)創(chuàng)歷史新高歡呼雀躍。美國正在大規(guī)模復(fù)工,而美國總統(tǒng)喬·拜登剛剛簽署通過的1.9萬億美元紓困法案有望大幅刺激消費者支出。在這兩個因素的推動下,美國即將迎來經(jīng)濟(jì)繁榮,這讓標(biāo)普500指數(shù)的上漲顯得合情合理。但這些樂觀主義者的想法根本不切實際,因為這些人忽視了他們解釋為什么能夠長時間維持當(dāng)前的股價時經(jīng)常用到的一個指標(biāo),出現(xiàn)了大幅度的負(fù)面轉(zhuǎn)變。

這個指標(biāo)就是耶魯大學(xué)(Yale University)的著名經(jīng)濟(jì)學(xué)家羅伯特·席勒提出的“超額周期調(diào)整性市盈率收益率”。這個指標(biāo)是席勒對經(jīng)典的周期調(diào)整性市盈率(CAPE)的擴(kuò)展。CAPE衡量了按照歷史標(biāo)準(zhǔn)股票估值過高還是過低。席勒采用過去十年的通脹調(diào)整后平均利潤作為分母,拉平了波峰和波谷。因為這種極端行情會在收益增長時讓股票顯得定價過低,而在收益下跌但必然會反彈時可能讓股票顯得定價過高。(分子是標(biāo)普指數(shù)。)

樂觀的投資者并不會過多談?wù)摮R?guī)CAPE,因為它早已亮起了紅燈。現(xiàn)在CAPE為35.65倍。這已經(jīng)超過了1929年的33倍和2007年的28倍。所以常規(guī)CAPE意味著股市出現(xiàn)大幅回調(diào)的可能性遠(yuǎn)高于持續(xù)上漲的可能性。

然而,超額CAPE收益率將牛市支持者們解釋大盤股為什么總體上依舊值得買入的理由考慮在內(nèi)。超額CAPE收益率將長期債券利率作為一個因素。直到最近,長期債券利率始終維持在極低的水平。

這種超低債券收益率給一種觀點奠定了基礎(chǔ),那就是只要股票價格看上去遠(yuǎn)低于債券,投資者的資金就會繼續(xù)涌入股市。(債券價格的走勢與其收益率呈負(fù)相關(guān)的關(guān)系,收益率下跌時債券價格上漲。)換一種更理性的說法就是,從2018年末開始大幅下跌的美國國債收益率大大降低了未來公司利潤的“貼現(xiàn)率”。通過簡單的計算,貼現(xiàn)率減低會提高一個特定利潤流的“現(xiàn)值”,并大幅提高股價。似乎很有道理。

問題在于,支撐樂觀投資者的理由的超低利率必須始終維持在較低水平,才可以證明他們是正確的。而這種情況幾乎從未發(fā)生過。現(xiàn)在,我們正在從頭見證一種可能的趨勢:債券收益率反彈到更正常的水平,尤其是在樂觀投資者們眼中的經(jīng)濟(jì)繁榮即將到來的情況下。這兩種觀點一方面認(rèn)為復(fù)工的公司會渴望在經(jīng)濟(jì)繁榮時期大舉擴(kuò)張,另一方面卻認(rèn)為雖然資本需求旺盛,但利率能夠維持在歷史最低點。這實際上似乎是自相矛盾的。

3月12日,標(biāo)普指數(shù)達(dá)到3,939點的最高點一天之后,10年期美國國債(長期債券)收益率達(dá)到1.62%。這比年初上漲了0.69個百分點,自去年8月以來上漲了1.11個百分點。在去年11月4日,10年期國債收益率還只有0.78%。目前的長期債券收益率處在2020年1月末以來的最高水平。

為什么直到最近債券收益率似乎一直有利于短線投資者?這是因為長期債券利率遠(yuǎn)遠(yuǎn)落后于通脹率,這意味著“實際收益率”處在較深的負(fù)區(qū)間,這在歷史上是極其罕見的。這種現(xiàn)象使席勒的超額CAPE明顯有利于股票,讓它深受華爾街投資者的喜愛,雖然他們對常規(guī)CAPE避而不談。超額CAPE收益率是標(biāo)普指數(shù)收益率減去10年期國債通脹調(diào)整收益率的差。標(biāo)普指數(shù)收益率與通脹調(diào)整市盈率呈負(fù)相關(guān)的關(guān)系,代表公司在股票中投資每一美元可以實現(xiàn)的收益。因此,該指數(shù)測量的是股票收益與超級安全的債券收益的差額。

在9月末,超額CAPE收益率為4.33%。按照席勒的市盈率倍數(shù)約31倍,股票的收益率只有3.25%。但10年國債的收益率卻低至0.68%,遠(yuǎn)低于1.76%的通脹率。兩者的差額所代表的10年期國債“實際”收益率為負(fù)1.08%。股票收益率領(lǐng)先于債券4.33%,看起來確實幅度很大。

但值得注意的是,股票之所以看起來有利于投資,是因為當(dāng)時債券的收益不足以支付你的租金和食品雜貨賬單。雖然股票的收益似乎遠(yuǎn)高于債券,但它們能夠承諾的“實際”收益率只有3.25%。考慮到未來約2%的通脹率,股票收益率也只有5.35%,與大部分市場策略師預(yù)測的兩位數(shù)的未來收益率相去甚遠(yuǎn)。

華爾街所看重的基準(zhǔn)面現(xiàn)在表現(xiàn)如何?目前的通脹率為1.61%。突然之間,它與10年期國債1.62%的收益率相差無幾。實際利率擺脫了負(fù)區(qū)間,與通脹率持平。與此同時,標(biāo)普500指數(shù)雖然度過了緊張不安的幾天,但卻再創(chuàng)新高,根本沒有受到10年期國債收益率大幅上漲的影響。當(dāng)然,在實際收益率上漲超過1個百分點的同時,標(biāo)普500指數(shù)的上漲降低了席勒的收益率。截至3月11日,席勒的收益率從9月的3.25%下降到只有2.81%(與35.6倍的CAPE呈負(fù)相關(guān)的關(guān)系)。

由于實際利率為零,因此超額CAPE與CAPE收益率完全相同,均為2.81%。股市無法在負(fù)實際利率中獲得任何幫助。根據(jù)席勒的數(shù)據(jù),最有可能的結(jié)果是股市的年收益率只有4.8%,即2.81%的收益率加2%的通脹率。接下來就是致命一擊:標(biāo)普指數(shù)的收益率領(lǐng)先于長期債券的比例要恢復(fù)到9月的4.3%,席勒市盈率需要從35.6倍下降到23倍,而標(biāo)普指數(shù)將從3,939點下跌到2,544點。

當(dāng)然,更高利率可能比快速經(jīng)濟(jì)增長更早到來。在這種情況下,更高的收益可以抵消利率上行帶來的下行壓力。但分析師們已經(jīng)提出了不切實際的利潤預(yù)測,試圖為超高估值尋找合理的理由。謹(jǐn)慎的觀點是,實際利率將恢復(fù)正常,利潤不會像人們普遍以為的那樣超過2019年的最高水平,而且標(biāo)普指數(shù)將進(jìn)入回調(diào)區(qū)間。

購買股票的最佳時機(jī)是利率超高而市盈率倍數(shù)極低的情景。但今天的情況卻截然相反。經(jīng)濟(jì)會恢復(fù)正常。這對樂觀的投資者而言似乎是好消息。但事實上并非如此。股市也會恢復(fù)正常。不過這肯定會讓投資者大失所望。(財富中文網(wǎng))

翻譯:劉進(jìn)龍

審校:汪皓

The Wall Street cheerleaders view the S&P 500's jump to an all-time record high this week as fully justified by an economic boom-in-the making, driven by the Great Reopening and reinforced by a looming surge in consumer spending courtesy of the $1.9 trillion relief package just signed by President Biden. But the optimists are cockeyed indeed, because they're ignoring a big, negative shift in one of their most-cited metrics for why stock prices have a long way to run.

The measure was developed by the great Yale economist Robert Shiller, who calls it the "Excess CAPE Yield." It's an extension of Shiller's legendary CAPE, or cyclically-adjusted price-earnings ratio, which measures whether stocks are under or overvalued by historical standards. To eliminate the peaks and valleys that can make equities appear cheap when earnings are inflated, or pricey when earnings crater but are bound to rebound, Shiller uses average profits over the past decade, adjusted for inflation, as the denominator. (The numerator is the S&P index.)

The bulls don't talk much about the regular CAPE, because it has long been flashing red. Right now, it stands at 35.65. That figure exceeds the peaks of 33 in 1929 and 28 in 2007. So the traditional CAPE is signaling that a big correction is far more likely than a durable uptrend.

The Excess CAPE Yield, however, incorporates the enthusiasts' favorite argument for why big cap stocks are by and large still a great buy. It factors in long bond interest rates, which until lately have hovered at incredibly low levels.

Those ultra-slender yields provide ballast for the position that as long as stocks look much less pricey than bonds, investor money is bound to keep pouring into equities. (Bonds' prices move inversely to their yields, rising when yields fall.) In its more intellectual form, the argument holds that the plunge in Treasury yields starting in late 2018 substantially lowered the "discount rate" applied to future corporate profits. By basic math, a lower discount rate raises the "present value" of a given stream of profits, and greatly boosts stock prices. Seems to make perfect sense.

The rub is that the incredibly low rates essential to the bulls' rationale have to stay low to prove them right. And that scenario has hardly ever happened. Now, we're witnessing the trend that was likely from the start: a rebound in yields to much more normal levels, especially given the roaring economy the bulls see building. Indeed, the two views—that resurgent companies will be thirsting to expand in flush times ahead, and that despite strong demand for capital, rates can keep sitting at historic lows—seem to contradict one another.

On March 12, the day after the S&P hit its historic peak of 3,939, the 10-year Treasury (long bond) yield reached 1.62%. That's a jump of 0.69 percentage points since the start of the year, and 1.11 points since August. As recently as Nov. 4, the yield stood at just 0.78%. The long bond hasn't been paying this much since late January of 2020.

Here's what made the yields until recently look so favorable for the go-go crowd: The long bond rates were sitting well below the course of inflation, meaning that "real yields" were steeply negative, a rarity in the past. This phenomenon strongly tilted Shiller's Excess CAPE in favor of stocks, making it a favorite of the Wall Streeters who shun the standard CAPE. The Excess CAPE number is the difference between the S&P earnings yield, expressed as the the inverse of the CAPE––the adjusted cents in earnings companies are delivering for every dollar invested in their shares––minus the inflation-adjusted yield on the 10-year. Hence, it measures the margin by which what stocks are earning beats what super-safe bonds are paying.

At the close of September, the Excess CAPE stood at 4.33%. Sure, stocks were yielding just 3.25% at a Shiller P/E of almost 31. But the 10-year was yielding a minuscule 0.68%, way below the inflation rate of 1.76%. That difference put the "real" rate at a negative 1.08%. That 4.33% represented stocks' edge over bonds, and it sure looked big.

It's worth noting, however, that it only appeared so favorable because bonds at the time didn't come close to keeping you even with your rent and grocery bills. Though stocks looked better than that, they were only promising a "real" return of 3.25%. Including future inflation of around 2%, that's a paltry 5.35%, not at all the double-digit future forecast by most market strategists.

How does Wall Street's prized benchmark look today? Inflation is now running at 1.61%. In a seismic shift, that's a hair below the 10-year yield of 1.62%. Suddenly, real rates aren't negative anymore, they're flat. In the meantime, the S&P 500, despite some jittery days, has ignored the surge in the 10-year to reach fresh highs. That rise, of course, has lowered the Shiller earnings yield at the same time real rates rose by over a point. As of March 11, that earnings-yield number had declined from 3.25% in September to just 2.81% (the inverse of the CAPE of 35.6).

Since real rates went to zero, the Excess CAPE is precisely the same as the CAPE, at 2.81%. It's no longer getting any help from negative real rates. Based on the Shiller numbers, the most likely outcome has stocks paying just 4.8% a year—that 2.81% earnings yield, plus 2% inflation. Here's the haymaker: For the S&P to go back to its 4.3% edge over the long bond in September, the Shiller PE would need to drop from 35.6 to 23, and fall from 3,939 to 2,544.

Of course, it could be that the higher rates are heralding faster economic growth. In that case, higher earnings could offset the downward pull of rising rates. But analysts were already forecasting fantastic, probably unrealistic profits ahead to justify extremely high valuations. The cautious view is that real rates will normalize, profits won't zoom past 2019 records as widely believed, and the S&P will correct.

The best time to buy stocks is when rates are unusually high, and PEs are unusually low. The current picture is the opposite. The economy will get back to normal. That would seem to be good news for the bulls. But it's not. Stocks will go back to normal, too. And that will be a bummer.

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