INO is extremely volatile on a day to day basis (heck, even hour per hour). Unless you trust the company, Dr. Kim, the pipeline, and the potential for great Phase II results, you'll drive yourself crazy watching it hour per hour.
Yesterday it hit 3.07, then closed at 3.64. Today opened at 3.22, within an hour it climbed back to 3.64, and now at 3.47.
Look at things long term my fellow share holder. 3 different companies have rated INO as BUY with a price target of $5-7.