However, Kraken does seem to be trading more intensely now, at press time. The start of the Bitcoin Cash chain split has begun. The divide was initiated on August 1 at 12:37 p.m. Futures of BCH have been trading for about $400, and it spiked this morning before shedding a bit of its value. 

Kraken

There was little BCH activity on the exchanges earlier this morning. Things have been mostly silent. However, Kraken tweeted they brought Bitcoin Cash live for trading. After a few hours, there now seems to be more activity on the exchange, albeit mainly sell orders populate the first page. Earlier the exchange announced it would begin crediting bitcoin cash this morning.

Poloniex and Bittrex

Other exchanges may be silent in regards to BCH because they may not be providing support for it. For instance, Poloniex has said they "may" support it depending on the outcome of the fork, so it is no surprise that trading is silent.