101 trades were generated in 2017-20 97 of them were profitable
Options Glossary - Most Used Terms
Specialist
An exchange member whose function it is to both make markets - buy and sell for his own account in the absence of public orders - and to keep the book of public orders. As a rule this is accomplished by managing the limit order book and making bids and offers for his/her/their own account in the absence of opposite market side orders. Most stock exchanges and some option exchanges utilize the specialist system of trading.