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Equity Options

Can investors/speculators use equity options to boost return through buying and selling leverage (calls), and/or buying and selling insurance (puts)? If so, which strategies work best? These blog entries relate to trading equity options.

Avoiding Options Expiration Week

A subscriber requested confirmation that a strategy of holding SPDR S&P 500 ETF Trust (SPY) at all times except options expiration week beats holding SPY all the time. To investigate, we look at holding SPY at all times except from the close on the second Friday of each month to the close on the third Friday of each month (Strategy). When the market is closed on Friday, we use the Thursday or next earliest close. We focus on compound annual growth rate (CAGR) and maximum drawdown (MaxDD) as essential performance statistics. We apply round-trip trading frictions of 0.1% for SPY-cash switches. Given settlement/cash-sweep delays, we assume zero return on cash. Using daily dividend-adjusted closes of SPY from inception in January 1993 through December 2022, we find that: Keep Reading

Option Gamma and Associated Future Stock Returns

Is option gamma, which indicates how aggressively option market makers must trade underlying stocks to hedge their option positions, a systematic driver of those stock returns? In his October 2022 paper entitled “Option Gamma and Stock Returns”, Amar Soebhag investigates the relationship between option gamma for individual stocks and future returns of those stocks. He defines net gamma exposure of a stock as a hedge-adjusted, gamma-weighted sum of open interest for options written on the stock. He each month sorts stocks into value-weighted tenths (deciles) by net gamma for the previous month and calculates next-month returns on the decile portfolios, with focus on the difference in returns between extreme deciles. He then looks at behavior of net gamma across stocks, interactions of net gamma with other stock return predictors and time variation of aggregate net gamma. Using daily gamma, open interest, implied volatility and trading volume for each option contract on listed U.S. common stocks price over $5 as available during January 1996 through December 2021, as well as contemporaneous returns for underlying stocks and data for other widely accepted stock return predictors, he finds that:

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Are Equity Put-Write ETFs Working?

Is systematically selling covered equity put options, as implemented by exchange-traded funds (ETF), attractive? To investigate, we consider four equity put-write ETFs, two dead and two living:

  1. US Equity High Volatility Put Write (HVPW) – oriented toward individual stocks (dead).
  2. ALPS Enhanced Put Write Strategy (PUTX) – index-oriented (dead).
  3. WisdomTree CBOE S&P500 PutWriteStrat (PUTW) – index-oriented (living).
  4. BMO US Put Write (ZPW.TO) – oriented toward individual stocks (living).

Because available samples are short, we focus on daily return correlation with SPY, average daily return, standard deviation of daily returns and daily reward/risk (average daily return divided by standard deviation of daily returns). We also look at compound annual growth rates (CAGR) and maximum drawdowns (MaxDD) based on daily data. We consider SPDR S&P 500 (SPY) and CBOE S&P 500 PutWrite Index (PUT) as benchmarks. Using daily returns for the four ETFs as available through early August 2022, and contemporaneous daily returns for SPY and PUT, we find that: Keep Reading

Are Equity Index Covered Call ETFs Working?

Is systematically selling covered call options on equity indexes, as implemented by exchange-traded funds (ETF), attractive? To investigate, we consider five equity covered call ETFs:

  1. Invesco S&P 500 BuyWrite (PBP) – seeks to track the CBOE S&P 500 BuyWrite Index (BXM).
  2. Global X S&P 500 Covered Call (XYLD) – seeks to track BXM.
  3. Global X NASDAQ 100 Covered Call (QYLD) – seeks to track the CBOE Nasdaq-100 BuyWrite V2 Index (BXNT). We use CBOE NASDAQ-100 BuyWrite Index (BXN) based on availability of historical data.
  4. First Trust BuyWrite Income (FTHI) – holds U.S. stocks of all market capitalizations and sells at-the-money to slightly out-of-the-money covered calls on the S&P 500 Index up to 20% of fund assets, laddered with expirations of less than one year (we use BXM as a benchmark).
  5. Global X Russell 2000 Covered Call (RYLD) – seeks to the CBOE Russell 2000 BuyWrite Index (BXRC).

We focus on average monthly return, standard deviation of monthly returns, compound annual growth rate (CAGR) and maximum drawdown (MaxDD) based on monthly data. We consider SPDR S&P 500 ETF Trust (SPY), Invesco QQQ Trust (QQQ) and iShares Russell 2000 ETF (IWM) as underlying stock index proxies. Using monthly dividend-adjusted returns for the five covered call ETFs since inceptions and contemporaneous monthly levels of all benchmarks/underlying index proxies through April 2022, we find that: Keep Reading

Simple Stock Index Option Strategies

Do simple stock index option strategies (stock-covered calls, cash-covered puts and collars) outperform the underlying index? To investigate, we examine performances of:

  1. CBOE S&P 500 BuyWrite Index (BXM),CBOE S&P 500 PutWrite Index (PUT) and CBOE S&P 500 95-110 Collar Index (CLL), with S&P 500 Total Return Index (SPTR) as a benchmark.
  2. Invesco S&P 500 BuyWrite ETF (PBP), designed to track BXM, and WisdomTree CBOE S&P 500 PutWrite Strategy Fund (PUTW), designed to track PUT, with SPDR S&P 500 ETF Trust (SPY) as a benchmark.

We focus on monthly return statistics, compound annual growth rates (CAGR) and maximum drawdowns (MaxDD) for comparisons. Using end-of-month levels for SPTR, BXM, PUT and CLL since June 1986, total returns for SPY and PBP since December 2007 (limited by PBP) and total returns for SPY and PUTW since February 2016 (limited by PUTW), all through March 2022, we find that:

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Trading Around Option Expiration Days

Are there anomalies for U.S. stock market returns around equity option expiration (OE) days (normally the third Friday of each month, but the preceding Thursday when the market is closed on the third Friday)? To investigate, we examine close-to-close S&P 500 Index returns from five trading days before through five trading days after a moderately large sample of OE days. Using daily closing prices for the index during January 1990 through February 2022 (386 OE days), we find that:

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Performance of Derivatives Traders

How well do derivatives traders perform, and why? In the July 2021 version of their paper entitled “Derivatives Leverage is a Double-Edged Sword”, Avanidhar Subrahmanyam, Ke Tang, Jingyuan Wang and Xuewei Yang study the performance of Chinese derivatives (futures) traders across 1,086 contracts on 51 underlying assets. They consider gross and net daily trader returns, turnover and degree of leverage implied by contracts held. They further investigate sources of profits/losses for these traders. To identify clearly skilled (unskilled) traders, they identify those in the top (bottom) 5% of Sharpe ratios who trade on at least 24 days during the first year of the sample period and isolate those with statistically extreme performance. They then analyze trading behaviors and results for these extreme performers the next two years. Using data from a major futures broker in China, including transaction histories, end-of-day holdings and account flows (injections and withdrawals) for 10,822 traders (315 institutional) during January 2014 through December 2016, they find that:

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What Kind of Index Option Traders and Trades Are Profitable?

Overall, how do retail option traders perform compared to institutional counterparts, and what accounts for any performance difference? In their June 2021 paper entitled “Who Profits From Trading Options?”, Jianfeng Hu, Antonia Kirilova, Seongkyu Park and Doojin Ryu use account-level transaction data to examine trading styles and profitability by investor category for KOSPI 200 index options and futures. There are no restrictions in Korean derivatives markets on retail investor participation, and retail participation is high. Using anonymized account-level (153,835 domestic retail, 5,904 domestic institutional, 667 foreign institutional and 604 foreign retail) data for all KOSPI 200 index options and futures trades during January 2010 through June 2014, they find that:

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Updating Evidence on Equity Index Covered Calls and Protective Puts

What is the latest evidence on attractiveness of selling covered calls or buying protective puts on the U.S. stock market? In his February 2021 paper entitled “Revisiting Covered Calls and Protective Puts: A Tale of Two Strategies”, Bryan Foltice examines raw and risk-adjusted returns from systematically selling covered calls and buying protective puts on SPDR S&P 500 ETF Trust (SPY) as a proxy for the stock market. Specifically, at the beginning of each month, he sells fully hedged calls or buys fully hedged puts on SPY with one month to expiration. He estimates option prices via the Black-Scholes option pricing model, using the CBOE VIX Index for SPY volatility and accounting for dividends. He considers a range of option moneyness, ranging from 5% out-of-the-money (OTM) to 5% in-the-money (ITM) in 1% increments. Using monthly SPY price, VIX level and risk-free rate during March 1993 through September 2020, he finds that:

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Stock Option Momentum and Seasonality

Do options of individual stocks exhibit momentum and seasonality patterns? In their November 2020 paper entitled “Momentum, Reversal, and Seasonality in Option Returns”, Christopher Jones, Mehdi Khorram and Haitao Mo investigate momentum and seasonality effects for options on U.S. common stocks. They focus on performance of straddles, combining a put and a call with the same strike price and expiration date. They balance needs for liquidity and sample size by requiring positive open interest during the holding period but not the momentum calculation interval. Specifically, on each monthly option expiration date, they:

  1. Form two straddles from near-the-money options expiring next month for each for each stock: (1) the pair with call delta closest to 0.5 for calculating momentum; and, (2) the pair with call delta closest to 0.5 and with positive open interest for both the put and the call when selected for calculating momentum portfolio return.
  2. Construct from these pairs zero-delta straddles using bid-ask midpoints as prices and calculate monthly straddle excess returns relative to the 1-month Treasury bill yield. This process generates about 1,600 straddles per month with average monthly excess return -5.6% and very large standard deviations.
  3. Calculate momentum as average monthly excess return over a specified lookback interval (rather than cumulative return, to suppress effects of return outliers).
  4. Rank straddle returns into equal-weighted fifths (quintiles) based on momentum and calculate average return for each quintile and for a portfolio that is long the top quintile and short the bottom quintile.

Using end-of-day open interest and bid-ask quotes for call and put options on U.S. common stocks from OptionMetric and trading data for underlying stocks during January 1996 through June 2019, they find that: Keep Reading

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