The parabolic SAR shows in AAPL, a confirmation of bull trend in the rally from March 24 to September 02 (just before the 4/1 split) with an increase of more than 110%.
The SAR indicates 5 chances for long positions in favor of the primary tend, with 4 smalls shorts signals against the primary tend, in this period.
After September 02, the trend is over, as shown in the chart, turning into a sideway trend, with even longer signals shorts position.
We can also see, a developing symmetric triangle. We must wait for the complete development of the triangle, where we will possibly see a new rally and we can use the SAR to establish positions in favor of the primary trend.