Do market makers always ensure that warrants are fairly priced? What are the minimum spreads they required to make?
The process of market making is that the warrant issuer will appoint the designated market maker (usually a securities firm) to provide the buy and sell quotes for their warrants. For example Macquarie Bank Limited (the issuer) issues warrants on the Singapore market and appoints Macquarie Securities (Singapore) Pte. Limited (the market maker) to provide liquidity in the warrants by placing buy and sell quotes into the market. The process of market making generally requires a computer software application that semi-automates the quotation process. The system calculates the price of the warrant at any one time using an options pricing model which generally takes into account the following 6 main factors to generate the price:
1) Share price
2) Exercise price
3) Expiry Date
4) Implied volatility
5) Expected dividends
6) Interest rates
As any of these factors change (the most common being the share price) the system recalculates the new price and adjusts the bid and offer to the new level. As mentioned this process is only semi automated and requires continual and significant interaction by one or more people at all times. The bid and offer quotes (price and volume) provided by the market maker are very much dependent on the prevailing market for the underlying stock.
It is important to note that apart from market makers, a warrant market will often have other investors who are actively buying and selling the warrants. The forces of supply and demand from both the market makers and the other market participants will generally determine what the fair market price for a warrant is at any one time. If there are no other participants, the market maker will provide liquidity to the market.
A warrant issuer must specify the maximum spreads and minimum volume they will provide in each of their warrants. These can be found in the warrant listing documents. Generally, issuers will try to keep their spreads as tight as possible to remain competitive. There are some exceptions where a market maker is not required to make a bid or offer, for example when trading in the underlying share is suspended or when a warrant becomes worthless.
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