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Fourier Analysis of SD (Sandridge Energy Inc. Common St)


SD (Sandridge Energy Inc. Common St) appears to have interesting cyclic behaviour every 2 weeks (.1987*sine), 2 weeks (.0697*cosine), and (-79228162514264337593543950335*cosine).

SD (Sandridge Energy Inc. Common St) has an average price of 23.27 (topmost row, frequency = 0).



Click on the checkboxes shown on the right to see how the various frequencies contribute to the graph. Look for large magnitude coefficients (sine or cosine), as these are associated with frequencies which contribute most to the associated stock plot. If you find a large magnitude coefficient which dramatically changes the graph, look at the associated "Period" in weeks, as you may have found a significant recurring cycle for the stock of interest.

Right click on the graph above to see the menu of operations (download, full screen, etc.)

Fourier Analysis

Using data from 10/4/2016 to 1/17/2017 for SD (Sandridge Energy Inc. Common St), this program was able to calculate the following Fourier Series:
Sequence #Cosine Coefficients Sine Coefficients FrequenciesPeriod
023.27375   0 
1-.78202 .64341 (1*2π)/1616 weeks
2-.58969 .28883 (2*2π)/168 weeks
3-.04472 .49176 (3*2π)/165 weeks
4-.46125 .02125 (4*2π)/164 weeks
5-.31355 -.30737 (5*2π)/163 weeks
6.06969 -.19867 (6*2π)/163 weeks
7.1303 .07428 (7*2π)/162 weeks
8-.025   (8*2π)/162 weeks
9.1303 -.07428 (9*2π)/162 weeks
10.06969 .19867 (10*2π)/162 weeks
11-.31355 .30737 (11*2π)/161 weeks
12-.46125 -.02125 (12*2π)/161 weeks
13-.04472 -.49176 (13*2π)/161 weeks
14-.58969 -.28883 (14*2π)/161 weeks

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