In iOS 3.0, Apple introduced landscape view for the Stocks app. At that time, it still only allowed date ranges of 1d, 1w, 1m, 3m, 6m, 1y, and 2y.
At some point since iOS 3.0, Apple enabled two extra time-spans when using the Stocks app in landscape mode. In this view, you can also see share prices going back 5 or 10 years.
Landscape mode also lets you tap and hold the stock price graph and reveal a line that can be dragged to the left or right to reveal the stock price on specific dates. Furthermore, if you tap and hold with two fingers, you can select a pair of time points and see the change in share price between those dates.
Mac OS X Hints
http://hints.macworld.com/article.php?story=2013020709463391