What is DW? Understanding derivatives that traders favor

Over the past year, the Thai investment industry has seen the popularity of a certain investment instrument called DW, which stands for Derivative Warrant. It has become a highly sought-after instrument among speculators and investors. Today, the total trading value of DW exceeds several billion baht, equivalent to the trading volume of the top five leading stocks in the market.

This article will guide you through an in-depth understanding of this instrument, from basics and trading methods to opportunities and risks involved.

Background and Fundamentals of DW

###What is the full name of DW?

Derivative Warrant (DW) is a financial instrument that grants the holder the right to buy or sell an underlying asset at a price and exercise rate specified by the issuer.

The traditional way to profit is to buy DW and hold until expiration. However, this method is less popular because it involves time decay with each passing day. Most traders prefer to speculate by trading short-term, within the same day (Day Trading).

DW is suitable for this strategy because:

• The price of DW directly follows the underlying asset’s price
• Leverage is used to amplify profits
• It can be easily traded on the stock exchange

As a result, investors can speculate on small movements in stock prices using relatively little capital but aiming for high returns.

###Types of DW to Know

DW mainly comes in two types based on the exercise rights:

Call DW - A security whose price moves in the same direction as the underlying asset. When the underlying stock rises, the Call DW price also increases, making it suitable for bullish markets.

Put DW - A security whose price moves inversely to the underlying asset. When the underlying stock rises, the Put DW price falls; when the stock falls, the Put DW rises, making it suitable for bearish markets.

Additionally, DW can be categorized based on the underlying asset:

• DW based on Thai stocks - limited to SET50 or SET100 groups
• DW based on Thai indices - generally referencing SET50
• DW based on foreign indices - such as Dow Jones (DJI) or Hang Seng (HSI)

###How to Read DW Codes

DW codes may look complex, such as SET5001C0921A or PTTE28P1221B, but can be broken down as follows:

UUUU – II – C/P – YYMM – S

• UUUU = Underlying asset code (SET50, PTTE, AOT, etc.)
• II = Issuer code (01 for Bualuang, 13 for KGI, 28 for Macquarie)
• C/P = Type (C = Call, P = Put)
• YYMM = Expiration year and month
• S = Series of the instrument

For example, SET5001C0921A means: A DW referencing SET50 issued by Bualuang, Call type, expiring September 2021, Series A.

Factors Affecting DW Price

(Calculation and Value of DW

Basic formula:

DW Price = Intrinsic Value + Time Value

Intrinsic Value:

• Call DW: )Underlying Price – Strike Price### × Exercise Ratio
• Put DW: (Strike Price – Underlying Price) × Exercise Ratio

Time Value: The difference between the market price of DW and its intrinsic value.

Remaining time affects this component—longer remaining life means higher time value. As expiration approaches, DW prices tend to decline.

Example: PTT01C0921A priced at 0.65 THB, strike 27 THB, ratio 10:1, current stock price 31.5 THB

• Intrinsic value = (31.5 – 27) × 0.1 = 0.45 THB
• Time value = 0.65 – 0.45 = 0.20 THB

(Main Factors Influencing DW Price

Underlying Asset Price - The most critical factor; DW prices are directly linked to the underlying stock. Call DW increases as the stock price rises; Put DW decreases.

Time Remaining - As time passes, both Call and Put DW prices tend to decrease. Longer remaining life results in higher DW prices.

Volatility - Higher volatility of the underlying asset increases the prices of both Call and Put DW.

How to Choose DW Wisely

)Effective Gearing###

This metric indicates how much the DW price will change relative to a 1% change in the underlying asset’s price. For example, an Effective Gearing of 7 means that a 1% increase in the underlying stock will cause the Call DW to increase by 7%, or the Put DW to decrease by 7%.

Choosing DW should consider the leverage ratio aligned with the trader’s risk appetite.

###Time Decay(

DW prices decline over time even if the underlying asset’s price remains unchanged. Therefore, for trading DW, it’s advisable to select instruments with low time decay, especially near expiration, where short-term trading is preferable.

)Implied Volatility###

This indicates which DW is undervalued relative to the same underlying asset. Traders should prefer DW with lower Implied Volatility.

(Liquidity)

Trading volume helps DW prices track the underlying asset’s price accurately. High liquidity DWs are easier to buy/sell and less likely to deviate from their fair value.

###Check Buy-Back Prices from Liquidity Providers

Often, DW prices on the board may deviate from their fair value, possibly due to large volume withdrawals or system errors. Always verify this information before trading.

Opportunities and Risks in DW Trading

(Advantages of DW Instruments

Low Initial Capital - Minimum 100 units, prices from cents to Baht, accessible to retail investors.

Leverage - Can amplify profits by several times, from a few times up to 20-30 times.

Profit in Both Bullish and Bearish Markets - Call DW for bullish, Put DW for bearish.

Limited Losses - Losses are limited to the capital invested in DW.

Versatility - Besides short-term speculation, DW can be used as a risk management tool )Hedging### for investment portfolios.

(Risks to Watch Out For

Rapid Price Fluctuations - Due to leverage, DW prices change faster than the underlying stock. This double-edged sword can lead to high gains but also significant losses.

Time Decay - Holding DW for a long period incurs time decay costs.

Expiration Date - When DW expires, if the price is below the strike, the entire investment may become worthless.

Liquidity Risk - In abnormal market conditions, liquidity providers may not be able to quote fair prices, causing bid-ask spreads to widen and prices to deviate from true value.

Key Terms Every DW Trader Should Know

• Underlying - The reference asset; see the first 4 characters of the code.
• Strike Price - The exercise price.
• Conversion Ratio - The exercise ratio.
• Days to Last Trading - Remaining trading days.
• Sensitivity - DW’s responsiveness to price changes.
• Time Decay - Daily decrease in DW value.
• ATM )At-the-Money### - Underlying price equals strike price.
• ITM ###In-the-Money( - Call DW: underlying > strike; Put DW: underlying < strike.
• OTM )Out-of-the-Money### - Call DW: underlying < strike; Put DW: underlying > strike.
• Implied Volatility - The market’s implied volatility of DW.
• Delta - The rate of change of DW price relative to the underlying.
• Historical Volatility - Past volatility of the underlying used to estimate future volatility.

Frequently Asked Questions

How are DW, Warrant, and Option different?

All three are rights-based instruments but differ as follows:

• Warrant - Issued by the company; price = underlying stock – strike price × exercise ratio; no leverage; traded on SET.
• Option - Negotiated in the market; seller receives premium, buyer gains the difference; traded on TFEX.
• DW - Issued by brokers; includes leverage; suitable for short-term speculation; traded on SET.

Are the Last Trading Day and Expiration Date different?

Yes—The Last Trading Day is the final day you can trade the instrument. The expiration date is when the right automatically exercises, and the holder receives the cash difference as profit.

From basic knowledge that DW stands for Derivative Warrant to how to select and manage risks, this article has comprehensively explained this instrument. If you’re ready, it’s time to start trading DW—just ensure you understand the risks and have a clear risk management plan.