Yeah i think so too, not because the stock split is making people trade it more,but because you get more from buy each stock and receiving a dividend. Plus that dividend is making people more likely to go long than short.
Look at the link I attached, the volume looks normal, the screenshot was taken last night. Before last night, I last checked the apple chart on thursday, and on thursday the volume looked exactly like on the chart posted by fibline. Don't you see the difference in volume?