just went green..., page-7

These are the so called market makers.

It happens across all stocks, options, CFDs and warrants.

Check ASX site.
e.g
Designated Price Makers appointed for Exchange Traded CFDs
Designated Price Makers (DPMs) have been appointed for the world’s first Exchange
Traded CFDs, to be available for trade on the Sydney Futures Exchange (SFE) in the
second quarter of 2007.
Commonwealth Bank of Australia, Credit Suisse, IMC Pacific, Optiver Australia Pty Ltd,
Susquehanna Pacific Pty Ltd, UBS Australia, Merrill Lynch Australia and Timber Hill
Australia Pty Ltd have now signed to be DPMs for the Exchange Traded CFDs to be listed
on SFE.
....