Actually now one trader can do pit/screen arbitrage by himself in the CBOT pits with a hand-held.. The CBOT is encouraging their use for arb purposes in all of the pits.
Jessie
Jessie
Quote from nitro:
One in the pit, the other on the screen (either "upstairs" or even by the pit,) they are wired to each other by headphones. They then buy one and sell the other in the right ratios to make the mispriced spread (e.g, 1 big spoo, 5 eminis.)
Some even do this across exchanges in the chicago pits...
nitro
