It's visible in all indicators, USD leaving the market, google trends, your node stats, r/bitcoin, even bitcointalk.
What about this indicator:
http://blockchain.info/charts/n-transactions-excluding-popular?showDataPoints=false&show_header=true&daysAverageString=1×pan=all&scale=0&address=
That looks like a pretty good sign. I wonder how much of that is day trading though?
I doubt they would hit the block chain. While you are trading at an exchange, you're just playing with numbers in the exchange's database. It's only when fiat/BTC are withdrawn that any action occurs.
That said, I'm sure you will get some people who withdraw all of their trading BTC each night for safe keeping.