Market Making and Spread

Hi,

I'm reading the PDF found at http://www.asx.net.au/products/pdf/market_making.pdf The p.articular section I'm asking about is a section the deals with how volume affects the bid/ask quoted spread. The text presents the following scenario:

"If you buy a 10k call warrants with a delta of 50%, the issuer would need to buy 5k shares nearly simultaneously"

...

"When looking at the liquidity of the shares the bid and offer could look as follows:

Volume, Bid, Offer, Volume
2k, 4.67, 4.68, 1k
1k, 4.66, 4.69, 3k
3k, 4.65, 4.7, 2k

f the warrant issuer sells 10,000 warrants to you, they
would need to buy 5,000 shares that they could get at an
average price of $4.69, which is higher than the offer you
would see for the shares"

Now, I understand where they got the average of 4.69: .(JavaScript must be enabled to view this email address), .(JavaScript must be enabled to view this email address), .(JavaScript must be enabled to view this email address). What I don't understand is the last conclusion: "which is higher than the offer you would see for the shares". What is being referred to here? I understand that a larger volume would extract a higher premium as it would be more difficult to delta hedge the resulting exposure.. I'm just not sure what is meant by the last statement.

Thanks
 
Top