Derivative Warrant Selection Strategies: The Complete Guide to Moneyness and Maturity Matching

TL;DR: The core of warrant selection is matching an appropriate strike price (in-the-money or out-of-the-money) with a suitable remaining term to expiry. Out-of-the-money, short-dated warrants offer higher leverage but carry greater risk, while in-the-money, longer-dated warrants are relatively more conservative. As a general rule, keep the out-of-the-money range within 20% and choose a tenor of no less than three months, while making decisions in line with your personal risk tolerance.

Warrants (covered warrants) are a common leveraged investment tool in the Hong Kong market, allowing investors to participate in the ups and downs of an underlying asset (such as a stock or an index) with a smaller capital outlay. However, the market offers a wide variety of warrants with differing terms, and making the right warrant selection is often a key factor affecting returns. This article focuses on the concepts of in-the-money, out-of-the-money, and tenor, and explains how different combinations influence a warrant’s risk and leverage, helping investors find product terms that suit their circumstances.

Understanding In-the-Money and Out-of-the-Money: The Basis of Warrant Selection

Before selecting warrants, you must first understand two basic concepts: “in-the-money” (ITM) and “out-of-the-money” (OTM).

ITM vs. OTM for Call Warrants (Calls)

For call warrants (Calls), when the underlying’s spot price is above the strike price, the warrant is “in-the-money”; when the spot price is below the strike, it is “out-of-the-money.” If the spot price is close to the strike, it is referred to as “at-the-money” or “near-the-money.”

Example (hypothetical): Suppose Stock A is trading at HKD 100. A Call with a strike of HKD 90 is ITM because the spot price is above the strike. If another Call has a strike of HKD 115, the spot price is below the strike, so it is OTM.

Put Warrants (Puts) Work in the Opposite Direction

For put warrants (Puts), it is exactly the opposite. When the underlying’s spot price is below the strike, the Put is ITM; when the spot price is above the strike, it is OTM.

Why Does ITM vs. OTM Matter?

Only ITM warrants have “intrinsic value.” Intrinsic value refers to the difference between the underlying’s spot price and the strike price. OTM warrants have zero intrinsic value—their prices are supported entirely by “time value.” When selecting warrants, understanding the balance between intrinsic value and time value helps you assess the risk characteristics of different terms.

Time Value and Tenor: A Cost You Cannot Ignore

Tenor (the remaining time to expiry) is another core factor in warrant selection. Time value is the implied cost of holding a warrant; it gradually erodes as the expiry date approaches, and becomes zero on the expiry date.

The Acceleration of Time Decay

Time decay is not linear—it accelerates noticeably as expiry draws near. According to market data from Hong Kong Exchanges and Clearing (HKEX), the shorter the tenor of a warrant, the greater its daily time-value decay. This means investors holding short-dated warrants face higher time-cost pressure.

Important note: Warrants with less than one month to expiry are colloquially known as “doomsday warrants.” These products experience extremely rapid time-value decay and are also highly sensitive to implied volatility; they are generally not recommended for beginner investors.

Advantages of Longer Tenor

Longer-dated warrants give the underlying more time to move in the expected direction, reducing “time pressure.” Although longer-dated warrants usually trade at higher prices (more time value), their daily time decay is slower, making them more suitable for medium-term positioning.

Pairing Moneyness and Tenor

With the basics in place, we can further discuss how to match strike price and tenor in warrant selection based on different market expectations and risk tolerance.

Aggressive Pairing: OTM × Short Tenor

If an investor has a clear short-term view on the underlying’s price direction and wants to seek higher potential returns with less capital, they may consider “out-of-the-money, shorter-tenor” warrants. These products typically have higher effective gearing, meaning that for every 1% move in the underlying, the warrant’s theoretical percentage move is larger.

However, high leverage is a double-edged sword: if the market moves against expectations, losses are also magnified. In addition, short-dated warrants decay faster, so the underlying needs to move in the expected direction within a short time; otherwise, even if the direction is correct, time decay may still lead to losses.

General reference range: Keeping the out-of-the-money range within 20% and choosing a tenor of no less than three months is a commonly accepted aggressive-strategy benchmark in the market (source: J.P. Morgan Warrant Education Centre).

Conservative Pairing: ATM or ITM × Long Tenor

For investors with lower risk tolerance, or those who expect the underlying to rise over the medium term but to consolidate in the near term, “at-the-money to slightly in-the-money, longer-tenor” warrants may be more suitable. These warrants tend to have slower time-value decay, are less sensitive to implied volatility, and while their effective gearing is lower, position risk is relatively reduced.

Suggested Pairing for Beginners

For investors new to warrants, it is recommended to start with “slightly out-of-the-money (around 5% to 10%), tenor of three months or longer.” This pairing strikes a balance between leverage and risk control, while giving the underlying sufficient time to move in the expected direction.

Other Key Indicators That Affect Warrant Selection

In addition to moneyness and tenor, the following indicators are also important considerations when selecting warrants.

Implied Volatility (IV)

Implied volatility (IV) is an important indicator for assessing whether a warrant is “expensive,” serving a role similar to the price-to-earnings ratio for stocks. The higher the IV, the higher the warrant’s pricing; conversely, among warrants with comparable terms, those with lower IV generally have lower costs.

When comparing different warrants on the same underlying, the stability of IV is more important than its absolute level. If a warrant’s IV is erratic, its price can more easily deviate from the underlying’s actual move, affecting returns.

Effective Gearing

Effective gearing reflects the warrant’s theoretical percentage change when the underlying moves by 1%. For example, if a Call has effective gearing of 8x, a 1% rise in the underlying implies a theoretical 8% rise in the warrant price.

When comparing warrants with similar terms, higher effective gearing suggests the product is relatively cheaper. However, note that effective gearing changes with the underlying price, time, and other factors, so it should be used only as a reference indicator rather than the sole selection criterion.

Outstanding Ratio

The outstanding ratio refers to the proportion of the total issued warrants that are held by investors in the market. If the outstanding ratio is high, the issuer has less pricing flexibility, and the warrant price may experience larger swings. When selecting warrants, it is generally recommended to avoid products with an excessively high outstanding ratio to reduce the risk of abnormal price volatility.

Tip: When selecting warrants, also consider the issuer’s quote quality. A tighter bid-ask spread means lower trading costs and is an important reference for evaluating the issuer’s service standard.

Building a Systematic Process for Warrant Selection

Based on the above, here is a practical reference workflow for selecting warrants:

Step 1: Confirm Market Direction

First, investors need a clear view on the future direction of the underlying asset. If you are bullish on the underlying, choose call warrants (Calls); if you expect the underlying to fall, choose put warrants (Puts). If the direction is uncertain, it is not advisable to rush into leveraged investments.

Step 2: Choose a Terms Combination Based on Risk Preference

Based on your personal risk tolerance and expected holding period, determine an appropriate strike price (ITM, ATM, or OTM) and tenor (short-, mid-, or long-term).

Step 3: Compare IV Among Similar Warrants

After narrowing down the range of terms, compare warrants with similar terms on the same underlying, and choose products with lower and more stable IV to control entry cost.

Step 4: Assess Effective Gearing and Outstanding Ratio

Use effective gearing as a value-for-money reference, and pay attention to the outstanding ratio—avoid warrants with an excessively high outstanding ratio.

Step 5: Set Take-Profit and Stop-Loss Plans

Because warrants are time-limited leveraged products, holding periods are constrained. Setting clear take-profit and stop-loss targets before buying helps manage risk. To further understand structural differences among derivatives, you may refer to Futures vs. Options: Understanding the Roles and Applications of Two Key Financial Instruments.

Key Risks of Warrant Investing

Warrants have both higher potential returns and higher risks than investing directly in the underlying asset. Before selecting warrants, investors should fully understand the following risks:

• Zero-value risk: On the expiry date, if the warrant is still OTM, its intrinsic value is zero; with time value also decayed to zero, the warrant price may fall to zero, and investors may lose the entire invested amount.
• Time decay: Even if the underlying moves as expected, ongoing time-value decay may still cause the warrant’s overall return to fall short of expectations.
• Decline in implied volatility: When market volatility decreases, IV may fall and drag down warrant prices; even if the underlying moves in the expected direction, profits may still not be achieved.
• Liquidity risk: Less popular warrants often have wider bid-ask spreads, which may increase the cost of entering and exiting positions.

If you would like to learn the basics of the Hong Kong stock market, including trading rules and settlement mechanisms, you may refer to the Longbridge Securities Beginner’s Guide to Investing in Hong Kong Stocks.

FAQs

Which is better: in-the-money or out-of-the-money warrants?

There is no absolute “better”—it depends on your investment objectives and risk tolerance. ITM warrants have higher intrinsic value and are relatively less affected by time decay, so risk is relatively lower; OTM warrants offer higher leverage and greater potential returns, but if the underlying does not move as expected, losses can also be larger.

What tenor is appropriate when selecting warrants?

Generally, a tenor of no less than three months is a common reference standard. A tenor that is too short (such as less than one month) leads to time value decaying too quickly and increases risk. The specific tenor should match your investment time horizon and your view on the underlying’s price movement.

How does implied volatility affect warrant selection?

The higher the IV, the higher the warrant’s pricing and the greater the entry cost. When comparing warrants with similar terms, products with lower and more stable IV are typically more cost-effective. If IV drops sharply, the warrant price may still be dragged down even when the underlying moves as expected.

What is effective gearing?

Effective gearing reflects the warrant’s theoretical percentage move when the underlying moves by 1%. For example, with effective gearing of 10x, a 1% rise in the underlying implies a theoretical 10% rise in the warrant. Among warrants with similar terms, higher effective gearing suggests relatively cheaper pricing, but it also implies greater volatility.

What are the main differences between warrants and CBBCs?

A key feature of warrants is that they have time value and will not be forcibly called before expiry. CBBCs (Callable Bull/Bear Contracts) include a mandatory call (knockout) mechanism: when the underlying touches the call price, the product terminates immediately. Before choosing between warrants and CBBCs, investors should clearly understand the structural differences between the two. If you want to learn more about CBBCs, you may refer to the Comprehensive Guide to Callable Bull/Bear Contracts.

Conclusion

There is no universal formula for warrant selection. The key is to understand core concepts—moneyness (ITM/OTM), tenor, implied volatility, and effective gearing—and to combine these factors with your market judgment and risk preference to make decisions that suit your needs. Choosing suitable warrant terms is the first step in controlling investment risk.

No matter which investment tool you choose, you must fully understand how it works, its risk characteristics, and trading rules, and put a robust risk management plan in place. You can learn more through the Longbridge Academy, or download the Longbridge App to explore Hong Kong warrants and other investment products on the Longbridge Securities platform. Longbridge Securities holds Hong Kong Securities and Futures Commission (SFC) Type 1, 2, 4 and 9 licenses and provides compliant trading services to investors.