Is the Commonwealth Bank's share price surge the ultimate bubble signal?

CBA has been a popular inclusion in many Australian investors’ portfolios. But has its surge been too good for too long?
Reece Birtles

Martin Currie

The CBA (ASX: CBA) share price at $152 and Price to Earnings ratio (P/E) of 25x (at the time of writing) are defying the fundamental laws of gravity that typically bind Australian banks to a P/E discount to the broader market. This is because banks typically have more limited earnings growth capabilities due to their regulated capital base, and lower Return on Equity & earnings tail risk from credit losses. While CBA did have some good earnings growth in the 2000s, the more recent decade has seen it grow well below inflation and the market, with EPS up just 4% in total over the last 10 years.

It is often said that a company can grow into its P/E, but to us, what makes CBA’s valuation look extreme compared to other high P/E names is that CBA is only likely to grow Earnings Per Share (EPS) around 2% p.a. vs. stocks with a similar P/E such as CSL (ASX: CSL) or Goodman Group (ASX: GMG). We believe that these stocks are likely to be able to grow EPS at a double-digit rate at least for a few years. CBA’s structural slowdown in EPS growth is driven by several factors: the high indebtedness of the Australian consumer today, stakeholder focus on fees, competition from new technology, stricter capital and liquidity requirements from APRA, and mortgage discounting that has built an impairment into net interest margins over the residual mortgage loan life. With expected growth of 2% p.a., it could take more than 20 years of zero share price appreciation to get back to a more typical P/E ratio.

With the share price where it is, the yield for CBA has also now dipped below the bond yield. And with the buy and hold return (IRR) estimate sitting near 5% (based on the 3% dividend yield and 2% expected growth), why should an income investor take on additional equity risk over cash or bonds? Even CBA themselves seem to think this, having paused buybacks as their preferred way to return capital to shareholders as a buyback is dilutive to the dividend per share (DPS).

We must keep reminding investors that we are talking about a bank, a sector which is often perceived as slow and boring. This CBA bubble is not about a strong expected earnings growth story like Xero (ASX: XRO), CSL (ASX: CSL) or Nvidia (NASDAQ: NVDA). One important thing that does appear to be driving the euphoria for this stock is the weight of inflows into index funds. The investment market is experiencing several trends: outflows from active funds, strong inflows to index funds, super fund inflows in a rising market, and a focus on short term risk management due to the Your Future Your Super performance test. Additionally, there is a preference for stocks not exposed to China. These factors are creating “more buyers than sellers” in CBA, driven by its >10% S&P/ASX 200 index weight, general underweight positions among active managers, and a strong retail shareholder base.

Whilst these trends can ‘ex-post’ explain CBA’s outperformance, they don’t explain what a fair value price is for CBA and whether it is a bubble subject to the whims of one of these buying forces.

But the real question is what's going to happen next - can the CBA share price really keep rising in such an extraordinary manner despite the lack of earnings growth? Is it prudent to be investing in a stock with, on our bottom-up fundamental estimates, a greater than 40% valuation downside to its current share price? (see key chart 1)


KEY CHART 1

The following chart highlights three ways to consider how today’s stock price for CBA (grey bars) has surpassed the fair value of the stock by around 40%:

  • The slate-coloured line is a simple multiple calculation using broker forecasts of CBA’s next twelve month (NTM) EPS at each point in time multiplied by 15x, the long-run P/E ratio.
  • The red line uses another ‘rule of thumb’ valuation measure and shows the expected share price if the company were valued based on its DPS and a simple 5% unfranked yield, a typical level for the company pre-2020.
  • The green line is what our MCA research analyst has valued CBA at with their full bottom-up fundamental analysis of fair value at each point in time. 


History has repeatedly shown that periods of euphoria unwind and often give way to an unexpected regime change when the imbalance in the system eventually makes it fall over. Our valuation spreads for CBA, and the Australia market as a whole (see key chart 2) suggest that we are close to this inflection point.


KEY CHART 2

Our team’s record of more than 20 years of in-house fundamental valuations of Australian companies provides great insight in understanding the scale of the opportunity for Value stocks within the market.

Our valuation assessment of CBA (see chart below), and also the S&P/ASX 200 as a whole, suggest that both are at/near their most overvalued point since our records began, and that we expect future returns to be negative over the medium term. Accordingly, we hold an underweight position in the stock in our MCA Value Equity strategy, and have significantly different holdings to the index in our portfolios.

MCA Valuation Spread: CBA vs. S&P/ASX 200   

We can also use our valuations to measure the overall opportunity for alpha for our MCA Value Equity strategy. The spread between our valuations for our holdings and stocks in the S&P/ASX 200 (see chart below) has only exceeded +40%, a critical threshold that signifies an extreme value opportunity, in periods such as the GFC and Covid (shaded in grey). From this wide level, the MCA Value Equity strategy has historically produced significant alpha over the S&P/ASX 200 Accumulation Index over a full style cycle. 

MCA Valuation Spread: MCA Value Equity strategy vs. S&P/ASX 200            


Importantly, value-style stocks have typically produced significant alpha in the 12-24 month periods following such inflection points. We believe investors really need to be thinking much more about the fundamentals and their position, or lack of position, in value-style stocks.


Learn more about our high-conviction value approach

Our Value Equity strategy aims to provide investors with the long-term capital growth potential of the Value style through an actively managed exposure to our highest conviction undervalued stock ideas, selected carefully by MCA’s investment team.

Visit the Franklin Templeton website here.

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Past performance is not a guide to future returns. The information provided should not be considered a recommendation to purchase or sell any particular security. It should not be assumed that any of the security transactions discussed here were, or will prove to be, profitable. Source: MCA, FactSet; as 14 January 2025. Data shown for a representative MCA Value Equity account vs. S&P/ASX 200 Index. *Expected next 12 Months (NTM) data is calculated using the weighted average of broker consensus forecasts of each portfolio holding – because of this, the returns quoted are estimated figures and are therefore not guaranteed and may differ materially from the figures mentioned. The figures may also be affected by inaccurate assumptions or by known or unknown risks and uncertainties. In respect of the broker consensus data the number of brokers included for each individual stock will vary depending on active coverage of that stock by a broker at any point in time. A median of brokers is typically utilised. All estimates avoid stale forecasts which are removed after a certain number of days. **Long-run P/E ratio of the Australian market Important information Any distribution of this material in Australia is by Martin Currie Australia (‘MCA’). Martin Currie Australia is a division of Franklin Templeton Australia Limited (ABN 76 004 835 849). Franklin Templeton Australia Limited is part of Franklin Resources, Inc., and holds an Australian Financial Services Licence (AFSL No. 240827) issued pursuant to the Corporations Act 2001. This publication is issued for information purposes only and does not constitute investment or financial product advice. It expresses no views as to the suitability of the services or other matters described in this document as to the individual circumstances, objectives, financial situation, or needs of any recipient. 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If one of these investments falls in value this can have a greater impact on the strategy’s value than if it held a larger number of investments. • Smaller companies may be riskier, and their shares may be less liquid than larger companies, meaning that their share price may be more volatile. • The strategy may invest in derivatives (index futures) to obtain, increase or reduce exposure to underlying assets. The use of derivatives may restrict potential gains and may result in greater fluctuations of returns for the portfolio. Certain types of derivatives may become difficult to purchase or sell in such market conditions. Franklin Templeton Australia Limited as Responsible Entity has appointed Martin Currie Australia as the fund manager for the Martin Currie Select Opportunities Fund (ARSN 122 100 207. Please read the relevant Product Disclosure Statements (PDSs) and any associated reference documents before making an investment decision. 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Reece Birtles
Chief Investment Officer
Martin Currie

Reece has held the role of Chief Investment Officer (CIO) of Martin Currie Australia (MCA) since 2006, and is also the lead portfolio manager for MCA’s Value Equity, Equity Income and Diversified Income & Growth strategies. In his time as CIO, the...

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