Authors
Douglas Hayley-Barker Richard lloyd
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Option writing has become an increasingly important strategy for investors seeking income when traditional sources of yield are insufficient or offer limited potential for capital growth. By selling options, investors receive an upfront premium in exchange for accepting defined trade-offs: call overwriting limits some of an equity portfolio’s upside participation, while put writing introduces additional downside market exposure.

The discipline has evolved from a single technique into a broad toolkit of solutions tailored to different objectives, risk tolerances and market views. These range from defensive, yield-oriented strategies to actively managed approaches designed to retain greater equity participation and target enhanced long-term risk-adjusted returns. 

Why option writing?

The appeal of option writing rests on three key benefits.

First, option premiums can provide a regular and transparent source of additional portfolio income. This income can be particularly valuable for investors seeking consistent cash flows in retirement portfolios, income-oriented mandates or diversified multi-asset solutions.

Second, option writing can enhance portfolio defensiveness and reduce volatility. Covered-call and option-income strategies generate cash premiums that can partially offset market declines, often leading to smoother return patterns than traditional equity investments.

Third, option writing may enhance long-term risk-adjusted returns because investors are often willing to pay for potential protection against adverse market moves. This demand can cause the volatility implied by option prices to exceed the volatility subsequently realized by the underlying asset. The difference is commonly known as the volatility risk premium. Disciplined option-writing programs seek to capture this potential premium over time.

Option writing as a toolkit

The range of option-income opportunities has broadened. The market has moved beyond single strategies to offer a spectrum of solutions designed to address different investor needs.

1. Call overwriting vs. put writing

One of the most important strategic choices for investors is deciding between call overwriting (covered calls) and put writing.

Covered-call strategies generate income by selling call options against an existing equity portfolio. They typically provide moderate income and some downside cushioning while retaining meaningful equity market participation. However, upside returns are partially capped when markets rise strongly.

Put-writing strategies, on the other hand, generally combine a money market investment with a program of selling put options, usually struck below the prevailing spot price. They may offer higher premiums and greater downside cushioning than covered-call strategies, although outcomes depend on strike selection and market conditions. They also offer little to no participation in rising markets.

Both approaches can play valuable roles depending on investor objectives. Those prioritizing upside participation may prefer call overwriting, whereas those seeking higher income may find put-writing strategies more attractive.

2. Passive vs. active underlying exposure

Another important consideration is the underlying portfolio against which options are written.

Passive equity exposures offer simplicity, transparency and a clear relationship between market performance and strategy outcomes.

Active equity portfolios, however, can provide additional sources of return. Through stock selection and portfolio construction, active managers may further enhance income generation, reduce overall volatility and contribute to excess returns. Combining active equity management with option writing can offer a more tailored approach to income investing, although potential tracking error between option positions and equity portfolios must be carefully managed.

3. Systematic and active option management

Option-writing strategies can differ materially in design and outcomes. Many early option-writing benchmark indices use relatively simple rules, selling options at predetermined strikes and maturities. While effective in generating income, these approaches may leave value on the table.

Systematic approaches seek to improve outcomes by, for example, diversifying option expirations over time to manage path dependency and dynamically adjusting factors such as strike selection as market conditions change. By systematically managing exposures, these strategies may enhance risk-adjusted returns while maintaining a transparent and repeatable investment process. They may be implemented either with manager discretion or through a rules-based custom index.

Active option management extends this concept further. Experienced managers can combine a systematic framework with selective discretion to respond to evolving market structures and opportunities. One example is the continuing shift in US option-market activity toward shorter maturities, including zero-days-to-expiry (0DTE) options. In 2025, 0DTE contracts accounted for 59% of SPX options volume1. Their growth may create additional opportunities for active managers. Rules-based index strategies, meanwhile, have limited ability to adjust as markets evolve.

Managers may also respond to shorter-term pricing changes, for example by selectively reducing call overwriting when option prices are unattractive relative to potential upside, or by switching between single-stock and index options as relative pricing fluctuates. Such flexibility may improve overall portfolio outcomes.

4. Exposure management

Traditional covered-call strategies combine a long equity position with a short call option. Because the short call reduces net equity exposure, the strategy typically participates less fully as markets rise. Its effective exposure also changes with the level of the market and the characteristics of the option. As a result, covered-call strategies may outperform their underlying equity exposure in flat or moderately declining markets, but can lag during strong rallies.

Exposure-managed strategies seek to make this market participation more stable. One approach is to add a dynamically adjusted long futures overlay to the covered-call position. The overlay can offset part of the negative equity exposure created by the short call, increasing net equity exposure when appropriate.

This can improve upside capture while retaining much of the income generated by option writing. However, the outcome depends on the overlay design, rebalancing rules, transaction costs and market conditions. These strategies may therefore appeal to investors seeking option income with greater participation in rising equity markets.

Figure 1: Option-writing toolkit – strategy choices across active, passive, defensive and enhanced approaches

Table of option-writing strategy choices across four categories: active, passive, defensive and enhanced.
Source: UBS Asset Management, Bloomberg. For illustrative purposes only. Data as of 31 March 2026.

The matrix illustrates the evolution of option-writing strategies from defensive to more growth-oriented objectives, alongside a shift from passive to active implementation. Index defensive and active defensive approaches sit toward the lower end of upside capture, while systematic enhanced and active enhanced strategies offer progressively greater upside participation.

The importance of strategy design

Although option writing can offer meaningful benefits, successful implementation depends heavily on portfolio construction and execution. Differences in option maturity, strike selection, exposure management, portfolio construction and risk controls can materially affect a strategy’s risk-return characteristics and investor outcomes.

The implementation structure can itself be an important source of value. For example, investors can access custom index option-writing strategies through total return swaps, potentially allowing the portfolio manager to earn additional returns on the assets supporting the swap.

As the option-writing market has evolved, implementation choices have become increasingly important. Exposure management and dynamic strike optimization, for example, can materially affect a strategy’s equity participation profile and overall equity exposure.

Consequently, investors should focus not only on the level of income generated but also on the strategy’s overall risk-return profile. This includes the degree of equity exposure and upside participation retained within the strategy, ensuring that these characteristics align with individual investment objectives and risk preferences.

Figure 2: Exposure management and enhanced systematic approaches can materially change an option-writing strategy’s return profile

Line chart comparing option-writing return profiles under exposure management and systematic approaches, 2008–2026. hero banner alt text: Abstract metallic texture with warm gold reflections and a polished, flowing surface.
Source: UBS Asset Management, Bloomberg. For illustrative purposes only. Data from 31 December 2008 to 31 March 2026. Own calculations based on in-house/backtested data and Bloomberg-sourced index data (SPX / SPX BuyWrite).

Line chart showing rolling 12-month beta from 2008 to 2026 for three strategies: S&P 500 Exposure Managed Call Writing, S&P 500 Classic Enhanced Systematic Call Writing, and the Cboe S&P 500 2% OTM BuyWrite Index. The three lines fluctuate over time, allowing comparison of how each strategy’s rolling beta changes across the period.

A platform for innovation

Option writing continues to evolve rapidly. The application of systematic management techniques, advances in derivatives markets and growing investor demand for income-oriented solutions continue to expand the available opportunity set.

Looking ahead, many option-based income strategies traditionally delivered through structured products are becoming accessible through more transparent and liquid ETFs. Autocallable strategies have begun to migrate into the ETF market, with the first UCITS product launched in April 2026. If this trend continues, investors could gain access to a broader range of income-generating approaches while retaining operational simplicity and daily liquidity.

We manage a substantial global platform of option-income strategies and have established a significant position in Europe’s option-based ETF market. Our experience spans the full spectrum of option-writing solutions, including traditional covered-call strategies, systematic income approaches, custom indices, actively managed equity-income portfolios and next-generation exposure-managed solutions. We offer these strategies in mutual fund and ETF formats, using both direct and swap-based implementations. We also offer option-writing strategies on other liquid assets including FX, interest rates, credit and commodities.

This breadth enables us to develop strategies tailored to a wide range of investor objectives while continuing to innovate as markets evolve.

Option writing has evolved from a single investment technique into a comprehensive toolkit for income generation. Whether through covered calls, put writing, systematic optimization, active management or exposure-managed overlays, investors now have access to a broad range of solutions designed to balance income, risk and equity exposure.

However, achieving these outcomes requires thoughtful strategy design, robust execution capabilities and deep expertise in options markets. As innovation continues and new implementation approaches emerge, option writing is likely to become an increasingly important component of modern portfolio construction.2

Code: C-09/26 M-006926, M-006927

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