Equity Premium

Does the number of factors significantly predicting next-month stock returns vary substantially over time? If so, what accounts for the variation? In their December 2021 paper entitled “Time Series Variation in the Factor Zoo”, Hendrik Bessembinder, Aaron Burt and Christopher Hrdlicka investigate time variation in the statistical significance of 205 previously identified equity factors before, during and after the sample periods used for their discoveries. Specifically, they track 1-factor (market) alphas of each factor over rolling 60-month intervals over a long sample period. Their criterion for significance for each factor in each interval is a t-statistic of at least 1.96 (95% confidence that alpha is positive). Using monthly returns for all common stocks listed on NYSE, AMEX and NASDAQ exchanges having at least 60 continuous months of data as available during July 1926 (with alpha series therefore starting June 1931) through December 2020, they find that: Keep Reading

Are some passive exchange-trade-fund (ETF) managers more efficient than others in adjusting to changes in underlying benchmark indexes? In the December 2021 revision of his paper entitled “Should Passive Investors Actively Manage Their Trades?”, Sida Li employs daily holding data of passive ETFs to compare and quantify effects of different approaches to portfolio reformation to track underlying indexes. Using daily and monthly holdings as available for 732 passive and unlevered U.S. equity ETFs (with no survivorship bias), underlying index reformation announcements and associated stock prices during 2012 through 2020, he finds that:

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How do returns of different asset classes recently interact with uncertainty in government economic policy as quantified by the Economic Policy Uncertainty (EPU) Index? This index at the beginning of each month incorporates from the prior month:

1. Coverage of policy-related economic uncertainty by prominent newspapers (50% weight).
2. Number of temporary federal tax code provisions set to expire in future years (one sixth weight).
3. Level of disagreement in one-year forecasts among participants in the Federal Reserve Bank of Philadelphia’s Survey of Professional Forecasters for both (a) the consumer price index (one sixth weight) and (b) purchasing of goods and services by federal, state and local governments (one sixth weight).

Because the historical EPU Index series includes substantial revisions to prior months, we focus on monthly percentage changes in EPU Index and look at lead-lag relationships between change in EPU Index and returns for each of the following 10 exchange-traded fund (ETF) asset class proxies:

• Equities:
  • SPDR S&P 500 (SPY)
  • iShares Russell 2000 Index (IWM)
  • iShares MSCI EAFE Index (EFA)
  • iShares MSCI Emerging Markets Index (EEM)
• Bonds:
  • iShares Barclays 20+ Year Treasury Bond (TLT)
  • iShares iBoxx $ Investment Grade Corporate Bond (LQD)
  • iShares JPMorgan Emerging Markets Bond Fund (EMB)
• Real assets:
  • Vanguard REIT ETF (VNQ)
  • SPDR Gold Shares (GLD)
  • Invesco DB Commodity Index Tracking (DBC)

Using monthly levels of the EPU Index and monthly dividend-adjusted prices for the 10 specified ETFs during December 2007 (limited by EMB) through December 2021, we find that: Keep Reading

How do returns of different asset classes recently interact with inflation as measured by monthly change in the not seasonally adjusted, all-commodities producer price index (PPI) from the U.S. Bureau of Labor Statistics? To investigate, we look at lead-lag relationships between change in PPI and returns for each of the following 10 exchange-traded fund (ETF) asset class proxies:

• Equities:
  • SPDR S&P 500 (SPY)
  • iShares Russell 2000 Index (IWM)
  • iShares MSCI EAFE Index (EFA)
  • iShares MSCI Emerging Markets Index (EEM)
• Bonds:
  • iShares Barclays 20+ Year Treasury Bond (TLT)
  • iShares iBoxx $ Investment Grade Corporate Bond (LQD)
  • iShares JPMorgan Emerging Markets Bond Fund (EMB)
• Real assets:
  • Vanguard REIT ETF (VNQ)
  • SPDR Gold Shares (GLD)
  • Invesco DB Commodity Index Tracking (DBC)

Using monthly total PPI values and monthly dividend-adjusted prices for the 10 specified ETFs during December 2007 (limited by EMB) through December 2021, we find that: Keep Reading

Does the labor force participation rate, measured monthly by the U.S. Bureau of Labor Statistics along with employment and unemployment rate, predict U.S. stock market returns? An increasing (decreasing) participation rate may may indicate strong (weak) employment demand and therefore a strong (weak) economy. To investigate, we relate participation rate to performance of the S&P 500 Index as a proxy for the stock market. Using monthly participation rate and index level during January 1948 (limited by the former) through December 2021, we find that: Keep Reading

A subscriber asked whether substituting the less volatile Vanguard Dividend Appreciation Index Fund (VIG) for SPDR S&P 500 (SPY) in the Simple Asset Class ETF Value Strategy (SACEVS) and the Simple Asset Class ETF Momentum Strategy (SACEMS) would improve outcomes. To investigate, we substitute monthly VIG dividend-adjusted returns for SPY dividend-adjusted returns in the two model strategies. Because VIG is not available for the entire sample periods used in the tracked models, we splice VIG returns into the SPY position starting with inception of the former in May 2006. We then compare the spliced performance with the original baseline performance, including: gross compound annual growth rates (CAGR), gross annual returns, average gross annual returns, standard deviations of gross annual returns, gross annual Sharpe ratios and maximum drawdowns (MaxDD). In Sharpe ratio calculations, we employ the average monthly yield on 3-month U.S. Treasury bills during a year as the risk-free rate for that year. Using the specified methodology and data to generate SACEVS monthly returns starting August 2002 and SACEMS monthly returns starting July 2006, all through December 2021, we find that:

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A subscriber hypothesized that a very large delta between daily iShares 20+ Year Treasury Bond (TLT) and SPDR S&P 500 (SPY) returns presages a stock market collapse, and asked for verification. To investigate, we consider two tests:

1. Calculate correlations between daily TLT-SPY return delta and daily SPY returns over the next month (21 trading days). A stock market collapse during this interval should exhibit very negative correlations.
2. Compute average next-day SPY returns by ranked tenth (decile) of daily TLT-SPY return deltas. Average SPY returns should be relatively very low for high deciles.

Using daily dividend-adjusted prices for TLT and SPY during late July 2002 (limited by TLT) through mid-December 2021, we find that: Keep Reading

A subscriber asked about a strategy that holds a portfolio of cyclical sectors and small capitalization stocks during November through April and a portfolio of defensive sectors during May through October, as follows:

• Cyclical:
  • Materials Select Sector SPDR (XLB)
  • Industrial Select Sector SPDR (XLI)
  • Consumer Discretionary Select SPDR (XLY)
  • Vanguard Small Capitalization Index Fund (NAESX)
• Defensive:
  • Consumer Staples Select Sector SPDR (XLP)
  • Utilities Select Sector SPDR (XLU)
  • Health Care Select Sector SPDR (XLV)

We use NAESX for small stocks to obtain a history as long as those for the equity sectors. We weight components of the cyclical and defensive portfolios equally. We use buy-and-hold NAESX and an equal-weighted, semiannually rebalanced portfolio of all seven funds (Sector EW) as benchmarks. We focus on semiannual return statistics, along with compound annual growth rates (CAGR) and maximum drawdowns (MaxDD). Using semiannual dividend-adjusted prices for the selected funds during April 1999 through October 2021 (defining the first and last available semiannual intervals), we find that: Keep Reading

How meaningful is the term Environmental, Social, and Corporate Governance (ESG) as a descriptor of firm valuation and investment performance? In his November 2021 paper entitled “ESG: Hyperboles and Reality”, George Serafeim assesses beliefs about ESG, including those involving firm valuation and ESG firm/fund investment performance. Drawing on more than a decade of research, he concludes that: Keep Reading

Is the conventional way of estimating the equity risk premium based on total shareholder return (TSR, assuming reinvestment of all dividends into stocks) reasonable? In their November 2021 paper entitled “Stock Investors’ Returns are Exaggerated”, Jesse Fried, Paul Ma and Charles Wang examine the realism of TSR as a measure of aggregate U.S. equity investor performance and therefore as the basis for U.S. equity premium estimation. They define an alternative all-shareholder return (ASR) that explicitly incorporates feasible reinvestment possibilities for cash distributions. Specifically, ASR:

• Rejects the infeasible total dividend reinvestment assumption and alternatively assumes shareholders reallocate dividends into U.S. Treasuries of different maturities, corporate bonds or housing.
• Takes into account all sources of cash flows from firms to investors, including repurchases and equity issuances (net distributions).

Using monthly estimated returns and cash distributions for the U.S. stock market and returns for the specified alternatives for cash distribution during January 1926 through December 2015, they find that: Keep Reading