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A liquidity provider shall, starting from 5 minutes after the TWSE centralized exchange market opens until the market closes, perform its quoting obligations by means of "responding to quote requests" or "voluntary quoting"; the operational guidelines are as follows:
- Responding to quote requests
- A liquidity provider shall, within 5 minutes after receiving an investor's price inquiry, respond with a quote, and this quote shall remain posted for at least 1 minute.
- No single bid quote for warrants may be for less than 100 trading units, or the total amount of any bid quote shall be for NT$100,000 or more. Under any of the following circumstances, however, this restriction need not apply, provided that the quote may not be for less than 10 trading units:
- When there is insufficient liquidity in spot shares.
- When the underlying security is a stock placed under disposition measures.
- During the period from 5 minutes to 15 minutes after market opening and the 5 minutes prior to market close.
- No single ask quote for warrants may be for less than 10 trading units.
- A liquidity provider shall make a synchronous recording of the phone call with which an investor requests a quote, and the recording shall be preserved for at least 1 year.
- Voluntary quoting:
- The price quote by a liquidity provider shall include a bid price and an ask price and the period of validity may not be "canceled if not immediately satisfied in one trade" or "canceled if all trades are not immediately satisfied in one trade."
- A liquidity provider shall on its own initiative provide quotes at least once every 5 minutes, and such quotes shall remain posted for at least 30 seconds, provided that this 30-second restriction shall not apply when quotes are updated due to fluctuations in order price or order volume of the underlying.
- A liquidity provider shall prescribe the maximum price fluctuation between the highest bid price and the lowest ask price as 10 units.
- No single bid quote for warrants may be for less than 100 trading units, or the total amount of any bid quote shall be for NT$100,000 or more. Under any of the following circumstances, however, this restriction need not apply, provided that the quote may not be for less than 10 trading units:
- When there is insufficient liquidity in spot shares.
- When the underlying security is a stock placed under disposition measures.
- During the period from 5 minutes to 15 minutes after market opening and the 5 minutes prior to market close.
- No single ask quote for warrants may be for less than 10 trading units.
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