AAPL recovering after initial WWDC nosedive

In heavy trading volume today, Apple stock (AAPL) is down four percent after initially dropping to 176.23 halfway through the keynote at 1:55 p.m. Eastern time.

At the time of posting, AAPL was trading near 177, which is a decline of over four percent since the closing bell yesterday Friday. (It's been a long day.)

Apple stock has taken hits in the past on announcement days, usually due to traders looking to make a quick buck from the high interest surrounding coverage of the event.

An update, after the jump.

Update: 3:30 p.m. ET: AAPL is continuing along a rollercoaster path today, almost reaching its nadir for the day at around 3 p.m. It has since bounced back up a little, but still hovering around 173, down about 7 today.

Update 6:00 p.m. ET: AAPL closed today at 181.61, off 4.03 (–2.17%).