Munnik Options most likely
Tried to identify this firm quoting these four illiquid stocks, but Euronext successfully barred this attempt by messing up the ELPS sheets on their website. Joost or Alan, please have it fixed and show us the liquidity provider list. In the mean time, I would place my bets on Munnik Options as the quitter in the illiquids.
Heavy volume in daily AEX options
The daily and weekly casino in the index options are seriously liquid these days. Some 22.000 daily contracts are traded every day, and an additional 10.000 contracts in the weekly’s. That’s a very heavy trading volume compared to the 80.000 traded in the regular index. Enough room left for some former niche market makers.