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Fourier Analysis of ERIC (Ericsson)

ERIC (Ericsson) appears to have interesting cyclic behaviour every 186 weeks (2.5456*sine), 169 weeks (2.1893*sine), and 116 weeks (1.5862*cosine).

ERIC (Ericsson) has an average price of 9.87 (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.

Fourier Analysis

Using data from 8/24/1981 to 3/20/2017 for ERIC (Ericsson), this program was able to calculate the following Fourier Series:
Sequence #Cosine Coefficients Sine Coefficients FrequenciesPeriod
09.87268   0
1-8.34289 -4.68489 (1*2π)/18561,856 weeks
26.13031 -.79906 (2*2π)/1856928 weeks
3-5.01155 -1.80975 (3*2π)/1856619 weeks
44.51791 .14595 (4*2π)/1856464 weeks
5-4.38151 -2.61938 (5*2π)/1856371 weeks
62.16921 3.00228 (6*2π)/1856309 weeks
7-1.32814 -3.93811 (7*2π)/1856265 weeks
8-.04454 2.6025 (8*2π)/1856232 weeks
9-.03402 -2.44581 (9*2π)/1856206 weeks
10-1.09447 2.54562 (10*2π)/1856186 weeks
111.45549 -2.18934 (11*2π)/1856169 weeks
12-1.16688 1.23184 (12*2π)/1856155 weeks
131.07955 -1.42287 (13*2π)/1856143 weeks
14-1.34711 1.11166 (14*2π)/1856133 weeks
151.35711 -1.38697 (15*2π)/1856124 weeks
16-1.58624 .97969 (16*2π)/1856116 weeks
171.41543 -.68662 (17*2π)/1856109 weeks
18-1.29031 .46515 (18*2π)/1856103 weeks
191.58328 -.30868 (19*2π)/185698 weeks
20-1.46255 -.44323 (20*2π)/185693 weeks
211.23874 .45572 (21*2π)/185688 weeks
22-1.13569 -.72107 (22*2π)/185684 weeks
23.79506 .62485 (23*2π)/185681 weeks
24-.66647 -.64075 (24*2π)/185677 weeks
25.55861 .65246 (25*2π)/185674 weeks
26-.3161 -.77617 (26*2π)/185671 weeks
27-.01425 .53888 (27*2π)/185669 weeks
28.04228 -.34512 (28*2π)/185666 weeks
29-.02721 .26678 (29*2π)/185664 weeks
30.10131 -.36176 (30*2π)/185662 weeks
31-.09941 .26251 (31*2π)/185660 weeks
32.03428 -.30104 (32*2π)/185658 weeks
33.06363 .25709 (33*2π)/185656 weeks
34-.08469 -.32585 (34*2π)/185655 weeks
35-.1007 .32699 (35*2π)/185653 weeks
36.32493 -.30636 (36*2π)/185652 weeks
37-.1275 .30383 (37*2π)/185650 weeks
38.32626 -.58653 (38*2π)/185649 weeks
39-.48595 .26374 (39*2π)/185648 weeks
40.36989 -.20786 (40*2π)/185646 weeks
41-.26195 .24173 (41*2π)/185645 weeks
42.3077 -.33657 (42*2π)/185644 weeks
43-.30211 .1209 (43*2π)/185643 weeks
44.2892 -.15896 (44*2π)/185642 weeks
45-.14035 .072 (45*2π)/185641 weeks
46.03438 -.26205 (46*2π)/185640 weeks
47-.12992 .17838 (47*2π)/185639 weeks
48.11411 -.0823 (48*2π)/185639 weeks
49.08597 .05401 (49*2π)/185638 weeks
50-.05122 -.19015 (50*2π)/185637 weeks
51-.11264 .09949 (51*2π)/185636 weeks
52.20502 .01969 (52*2π)/185636 weeks
53-.08939 -.23225 (53*2π)/185635 weeks
54.05809 .20851 (54*2π)/185634 weeks
55-.02692 -.27489 (55*2π)/185634 weeks
56.09715 .09473 (56*2π)/185633 weeks
57-.13155 -.18423 (57*2π)/185633 weeks
58.10382 .12773 (58*2π)/185632 weeks
59-.17303 -.20416 (59*2π)/185631 weeks
60.16489 .22204 (60*2π)/185631 weeks
61-.05757 -.20212 (61*2π)/185630 weeks
62.14877 .12266 (62*2π)/185630 weeks
63-.10719 -.29347 (63*2π)/185629 weeks
64.05901 .14462 (64*2π)/185629 weeks
65-.09793 -.18793 (65*2π)/185629 weeks
66.05866 .16569 (66*2π)/185628 weeks
67-.09755 -.21862 (67*2π)/185628 weeks
68.11843 .21212 (68*2π)/185627 weeks
69-.02715 -.24304 (69*2π)/185627 weeks
70.03955 .17974 (70*2π)/185627 weeks
71.06971 -.23741 (71*2π)/185626 weeks
72-.04417 .13211 (72*2π)/185626 weeks
73.1082 -.26557 (73*2π)/185625 weeks
74-.16024 .13349 (74*2π)/185625 weeks
75.15133 -.21449 (75*2π)/185625 weeks
76-.20027 .04838 (76*2π)/185624 weeks
77.17044 -.04146 (77*2π)/185624 weeks
78-.19449 -.04668 (78*2π)/185624 weeks
79.19872 .07386 (79*2π)/185623 weeks
80-.13032 -.22703 (80*2π)/185623 weeks
81.08301 .16522 (81*2π)/185623 weeks
82-.0286 -.28378 (82*2π)/185623 weeks
83-.05333 .22503 (83*2π)/185622 weeks
84.05581 -.28119 (84*2π)/185622 weeks
85-.11646 .20016 (85*2π)/185622 weeks
86.16367 -.18093 (86*2π)/185622 weeks
87-.20258 .07909 (87*2π)/185621 weeks
88.14741 -.20127 (88*2π)/185621 weeks
89-.24387 .1185 (89*2π)/185621 weeks
90.16736 -.04704 (90*2π)/185621 weeks
91-.20375 .0125 (91*2π)/185620 weeks
92.17613 .01833 (92*2π)/185620 weeks
93-.12426 -.09805 (93*2π)/185620 weeks
94.0707 .04072 (94*2π)/185620 weeks
95-.08173 -.07058 (95*2π)/185620 weeks
96-.02354 .03258 (96*2π)/185619 weeks
97.03548 -.03866 (97*2π)/185619 weeks
98-.03793 .02623 (98*2π)/185619 weeks
99-.00643 -.04467 (99*2π)/185619 weeks
100-.00899 .06903 (100*2π)/185619 weeks
101.08494 -.11051 (101*2π)/185618 weeks
102-.08761 .05122 (102*2π)/185618 weeks
103.02544 -.06309 (103*2π)/185618 weeks
104.00352 .11165 (104*2π)/185618 weeks
105.04465 -.16661 (105*2π)/185618 weeks
106.00063 .09219 (106*2π)/185618 weeks
107-.05477 -.08864 (107*2π)/185617 weeks
108.06688 .07168 (108*2π)/185617 weeks
109-.0087 -.10842 (109*2π)/185617 weeks
110.00735 .05391 (110*2π)/185617 weeks
111-.03767 -.07689 (111*2π)/185617 weeks
112.07783 .06012 (112*2π)/185617 weeks
113-.06148 -.14549 (113*2π)/185616 weeks
114.02438 .10334 (114*2π)/185616 weeks
115-.06255 -.14804 (115*2π)/185616 weeks
116.03127 .18016 (116*2π)/185616 weeks
117.05274 -.22549 (117*2π)/185616 weeks
118-.13377 .13993 (118*2π)/185616 weeks
119.08673 -.11462 (119*2π)/185616 weeks
120-.10002 .12031 (120*2π)/185615 weeks
121.18957 -.08946 (121*2π)/185615 weeks
122-.21528 -.02902 (122*2π)/185615 weeks
123.19895 .04479 (123*2π)/185615 weeks
124-.14439 -.09463 (124*2π)/185615 weeks
125.11648 .09405 (125*2π)/185615 weeks
126-.09408 -.18262 (126*2π)/185615 weeks
127.03063 .18257 (127*2π)/185615 weeks
128.00757 -.17399 (128*2π)/185615 weeks
129-.01748 .11872 (129*2π)/185614 weeks
130.01893 -.16105 (130*2π)/185614 weeks
131-.07196 .13825 (131*2π)/185614 weeks
132.07623 -.12105 (132*2π)/185614 weeks
133-.01218 .10692 (133*2π)/185614 weeks
134-.01547 -.1763 (134*2π)/185614 weeks
135-.01718 .16116 (135*2π)/185614 weeks
136.01478 -.13006 (136*2π)/185614 weeks
137-.00419 .12469 (137*2π)/185614 weeks
138.02866 -.11361 (138*2π)/185613 weeks
139.00605 .12287 (139*2π)/185613 weeks
140.07833 -.18206 (140*2π)/185613 weeks
141-.10567 .12268 (141*2π)/185613 weeks
142.13431 -.11331 (142*2π)/185613 weeks
143-.09809 .05294 (143*2π)/185613 weeks
144.11867 -.0896 (144*2π)/185613 weeks
145-.12026 .00216 (145*2π)/185613 weeks
146.12296 -.00585 (146*2π)/185613 weeks
147-.11907 -.08693 (147*2π)/185613 weeks
148.07878 .09242 (148*2π)/185613 weeks
149-.04883 -.11118 (149*2π)/185612 weeks
150.07915 .08322 (150*2π)/185612 weeks
151-.05618 -.16021 (151*2π)/185612 weeks
152.03006 .09641 (152*2π)/185612 weeks
153-.01101 -.09916 (153*2π)/185612 weeks
154.01212 .01598 (154*2π)/185612 weeks
155-.00069 -.09234 (155*2π)/185612 weeks
156-.04902 .06594 (156*2π)/185612 weeks
157.0784 -.10179 (157*2π)/185612 weeks
158-.09137 .01836 (158*2π)/185612 weeks
159.05425 -.06365 (159*2π)/185612 weeks
160-.10612 .0101 (160*2π)/185612 weeks
161.05078 -.00402 (161*2π)/185612 weeks
162-.04243 -.02917 (162*2π)/185611 weeks
163-.01987 .01669 (163*2π)/185611 weeks
164.01661 -.01532 (164*2π)/185611 weeks
165.02121 -.01651 (165*2π)/185611 weeks
166-.04603 -.04223 (166*2π)/185611 weeks
167-.02711 .00196 (167*2π)/185611 weeks
168.03359 .04141 (168*2π)/185611 weeks
169-.01416 -.06655 (169*2π)/185611 weeks
170.00517 .03186 (170*2π)/185611 weeks
171.00145 -.04016 (171*2π)/185611 weeks
172-.0256 .01249 (172*2π)/185611 weeks
173.0341 -.02363 (173*2π)/185611 weeks
174-.04456 -.00612 (174*2π)/185611 weeks
175.03825 -.00848 (175*2π)/185611 weeks
176-.00452 -.02303 (176*2π)/185611 weeks
177-.03435 -.05807 (177*2π)/185610 weeks
178-.02636 .02631 (178*2π)/185610 weeks
179.00883 -.00638 (179*2π)/185610 weeks
180-.00351 .00907 (180*2π)/185610 weeks
181.00322 -.0537 (181*2π)/185610 weeks
182-.01831 .02811 (182*2π)/185610 weeks
183.02814 -.04108 (183*2π)/185610 weeks
184-.04179 -.00035 (184*2π)/185610 weeks
185.03113 -.049 (185*2π)/185610 weeks
186-.05624 .00364 (186*2π)/185610 weeks
187.01733 -.00986 (187*2π)/185610 weeks
188-.00391 -.01469 (188*2π)/185610 weeks
189-.03928 -.01296 (189*2π)/185610 weeks
190.01867 -.01188 (190*2π)/185610 weeks
191-.0553 .04849 (191*2π)/185610 weeks
192.08497 -.04937 (192*2π)/185610 weeks
193-.07247 .03373 (193*2π)/185610 weeks
194.06808 -.0565 (194*2π)/185610 weeks
195-.07633 .0269 (195*2π)/185610 weeks
196.06874 -.03576 (196*2π)/18569 weeks
197-.08986 .01048 (197*2π)/18569 weeks
198.08346 -.00416 (198*2π)/18569 weeks
199-.07071 -.03608 (199*2π)/18569 weeks
200.05473 .02518 (200*2π)/18569 weeks
201-.04613 -.04248 (201*2π)/18569 weeks
202.04152 .00897 (202*2π)/18569 weeks
203-.06173 -.04463 (203*2π)/18569 weeks
204.03717 .03345 (204*2π)/18569 weeks
205-.05038 -.05182 (205*2π)/18569 weeks
206.04587 .03301 (206*2π)/18569 weeks
207-.07692 -.06128 (207*2π)/18569 weeks
208.02953 .06656 (208*2π)/18569 weeks
209-.04208 -.05036 (209*2π)/18569 weeks
210.03 .05628 (210*2π)/18569 weeks
211-.00293 -.03974 (211*2π)/18569 weeks
212-.01557 .02459 (212*2π)/18569 weeks
213.05561 -.03282 (213*2π)/18569 weeks
214-.06716 -.00079 (214*2π)/18569 weeks
215.06792 -.01073 (215*2π)/18569 weeks
216-.05015 .00621 (216*2π)/18569 weeks
217.07806 -.03406 (217*2π)/18569 weeks
218-.07007 -.02827 (218*2π)/18569 weeks
219.03769 -.01258 (219*2π)/18568 weeks
220-.04807 -.00338 (220*2π)/18568 weeks
221.03054 -.01696 (221*2π)/18568 weeks
222-.02908 .01576 (222*2π)/18568 weeks
223.03449 -.0233 (223*2π)/18568 weeks
224-.01342 .00019 (224*2π)/18568 weeks
225.02535 -.03056 (225*2π)/18568 weeks
226-.0131 -.03052 (226*2π)/18568 weeks
227-.02102 -.01421 (227*2π)/18568 weeks
228.01079 .00607 (228*2π)/18568 weeks
229-.03331 -.02363 (229*2π)/18568 weeks
230.02687 .01747 (230*2π)/18568 weeks
231-.02619 -.03759 (231*2π)/18568 weeks
232.0242 .0089 (232*2π)/18568 weeks
233-.02757 -.05413 (233*2π)/18568 weeks
234-.00994 .01527 (234*2π)/18568 weeks
235-.04071 -.02222 (235*2π)/18568 weeks
236.03513 .04293 (236*2π)/18568 weeks
237-.0089 -.05606 (237*2π)/18568 weeks
238.00681 .01715 (238*2π)/18568 weeks
239-.02164 -.04746 (239*2π)/18568 weeks
240-.00751 .02208 (240*2π)/18568 weeks
241-.00602 -.01258 (241*2π)/18568 weeks
242.01886 -.00428 (242*2π)/18568 weeks
243-.02253 -.04993 (243*2π)/18568 weeks
244-.02629 .01814 (244*2π)/18568 weeks
245.02382 -.03388 (245*2π)/18568 weeks
246-.05457 .01486 (246*2π)/18568 weeks
247.02584 -.02059 (247*2π)/18568 weeks
248-.05538 -.00887 (248*2π)/18567 weeks
249.04183 .02085 (249*2π)/18567 weeks
250-.04853 -.01535 (250*2π)/18567 weeks
251.04782 .01502 (251*2π)/18567 weeks
252-.0471 -.05032 (252*2π)/18567 weeks
253.02655 .06088 (253*2π)/18567 weeks
254-.00999 -.06449 (254*2π)/18567 weeks
255.01946 .05349 (255*2π)/18567 weeks
256-.00244 -.0949 (256*2π)/18567 weeks
257-.0119 .04794 (257*2π)/18567 weeks
258-.00681 -.05681 (258*2π)/18567 weeks
259-.02202 .02493 (259*2π)/18567 weeks
260-.00168 -.02877 (260*2π)/18567 weeks
261-.0323 .02539 (261*2π)/18567 weeks
262.04439 -.00039 (262*2π)/18567 weeks
263-.03907 -.04304 (263*2π)/18567 weeks
264.02032 .02163 (264*2π)/18567 weeks
265-.05321 -.03124 (265*2π)/18567 weeks
266.04899 .06139 (266*2π)/18567 weeks
267-.02579 -.08146 (267*2π)/18567 weeks
268.0187 .05953 (268*2π)/18567 weeks
269-.02791 -.08806 (269*2π)/18567 weeks
270.00081 .06755 (270*2π)/18567 weeks
271-.01784 -.05217 (271*2π)/18567 weeks
272.00497 .0228 (272*2π)/18567 weeks
273-.01541 -.00996 (273*2π)/18567 weeks
274.01817 .00127 (274*2π)/18567 weeks
275-.02813 -.01768 (275*2π)/18567 weeks
276.01873 -.01382 (276*2π)/18567 weeks
277-.0317 .01932 (277*2π)/18567 weeks
278.028 -.03843 (278*2π)/18567 weeks
279-.04876 .00653 (279*2π)/18567 weeks
280.00428 -.01627 (280*2π)/18567 weeks
281-.02275 .04816 (281*2π)/18567 weeks
282.02387 -.03022 (282*2π)/18567 weeks
283-.00945 .02726 (283*2π)/18567 weeks
284.00907 -.04912 (284*2π)/18567 weeks
285-.01964 .05441 (285*2π)/18567 weeks
286.02216 -.06004 (286*2π)/18566 weeks
287-.04746 .04613 (287*2π)/18566 weeks
288.07794 -.01045 (288*2π)/18566 weeks
289-.0586 -.02412 (289*2π)/18566 weeks
290.0465 .02326 (290*2π)/18566 weeks
291-.0281 -.03869 (291*2π)/18566 weeks
292.02631 .05454 (292*2π)/18566 weeks
293.0107 -.07916 (293*2π)/18566 weeks
294-.02669 .04411 (294*2π)/18566 weeks
295.03013 -.07431 (295*2π)/18566 weeks
296-.06584 .07708 (296*2π)/18566 weeks
297.08791 -.07776 (297*2π)/18566 weeks
298-.1004 .03616 (298*2π)/18566 weeks
299.10246 -.01925 (299*2π)/18566 weeks
300-.08166 -.01741 (300*2π)/18566 weeks
301.07165 -.00823 (301*2π)/18566 weeks
302-.07274 -.02754 (302*2π)/18566 weeks
303.03995 .00289 (303*2π)/18566 weeks
304-.04275 -.01445 (304*2π)/18566 weeks
305.02128 -.00331 (305*2π)/18566 weeks
306-.03999 -.00249 (306*2π)/18566 weeks
307.03471 -.00173 (307*2π)/18566 weeks
308-.02163 -.0261 (308*2π)/18566 weeks
309-.00557 .00037 (309*2π)/18566 weeks
310-.00163 -.01274 (310*2π)/18566 weeks
311-.00716 -.01298 (311*2π)/18566 weeks
312-.0184 -.00914 (312*2π)/18566 weeks
313.00133 .00489 (313*2π)/18566 weeks
314-.00473 -.01771 (314*2π)/18566 weeks
315-.00518 .00083 (315*2π)/18566 weeks
316-.01015 -.02403 (316*2π)/18566 weeks
317-.02472 .02664 (317*2π)/18566 weeks
318.02724 -.0199 (318*2π)/18566 weeks
319-.03016 .00757 (319*2π)/18566 weeks
320.03631 -.02287 (320*2π)/18566 weeks
321-.0581 .00612 (321*2π)/18566 weeks
322.06716 -.01077 (322*2π)/18566 weeks
323-.08399 -.02141 (323*2π)/18566 weeks
324.05186 .00339 (324*2π)/18566 weeks
325-.07937 -.01347 (325*2π)/18566 weeks
326.07495 .0292 (326*2π)/18566 weeks
327-.08873 -.05797 (327*2π)/18566 weeks
328.05802 .06073 (328*2π)/18566 weeks
329-.06967 -.07222 (329*2π)/18566 weeks
330.04631 .09061 (330*2π)/18566 weeks
331-.04535 -.11125 (331*2π)/18566 weeks
332-.00364 .10599 (332*2π)/18566 weeks
333.00777 -.08913 (333*2π)/18566 weeks
334-.02275 .08671 (334*2π)/18566 weeks
335.02529 -.08422 (335*2π)/18566 weeks
336-.04936 .07063 (336*2π)/18566 weeks
337.06361 -.0534 (337*2π)/18566 weeks
338-.07694 .03412 (338*2π)/18565 weeks
339.08462 -.02756 (339*2π)/18565 weeks
340-.09208 .01279 (340*2π)/18565 weeks
341.09135 .00048 (341*2π)/18565 weeks
342-.08834 -.0304 (342*2π)/18565 weeks
343.08235 .04025 (343*2π)/18565 weeks
344-.07498 -.0725 (344*2π)/18565 weeks
345.06468 .08079 (345*2π)/18565 weeks
346-.05895 -.11719 (346*2π)/18565 weeks
347.01722 .11227 (347*2π)/18565 weeks
348-.00085 -.10362 (348*2π)/18565 weeks
349-.0272 .08492 (349*2π)/18565 weeks
350.02635 -.09303 (350*2π)/18565 weeks
351-.05789 .08776 (351*2π)/18565 weeks
352.06507 -.06691 (352*2π)/18565 weeks
353-.07943 .05778 (353*2π)/18565 weeks
354.07924 -.0426 (354*2π)/18565 weeks
355-.07307 .02101 (355*2π)/18565 weeks
356.06206 -.01393 (356*2π)/18565 weeks
357-.07081 -.01749 (357*2π)/18565 weeks
358.03947 .03138 (358*2π)/18565 weeks
359-.03773 -.0169 (359*2π)/18565 weeks
360.05923 .0335 (360*2π)/18565 weeks
361-.04869 -.05075 (361*2π)/18565 weeks
362.04429 .05169 (362*2π)/18565 weeks
363-.01883 -.05266 (363*2π)/18565 weeks
364.03176 .03834 (364*2π)/18565 weeks
365-.01988 -.07817 (365*2π)/18565 weeks
366-.02072 .06589 (366*2π)/18565 weeks
367.02346 -.05524 (367*2π)/18565 weeks
368-.01906 .06678 (368*2π)/18565 weeks
369.0405 -.08828 (369*2π)/18565 weeks
370-.05854 .06979 (370*2π)/18565 weeks
371.07071 -.06025 (371*2π)/18565 weeks
372-.05829 .03625 (372*2π)/18565 weeks
373.05931 -.05965 (373*2π)/18565 weeks
374-.07205 .02448 (374*2π)/18565 weeks
375.06681 -.02235 (375*2π)/18565 weeks
376-.0685 .0007 (376*2π)/18565 weeks
377.05316 -.022 (377*2π)/18565 weeks
378-.06179 -.00383 (378*2π)/18565 weeks
379.04291 .0134 (379*2π)/18565 weeks
380-.0378 -.02344 (380*2π)/18565 weeks
381.02959 .01095 (381*2π)/18565 weeks
382-.03392 -.03075 (382*2π)/18565 weeks
383.02268 .03828 (383*2π)/18565 weeks
384-.00037 -.03803 (384*2π)/18565 weeks
385.00046 .00416 (385*2π)/18565 weeks
386-.00194 -.03047 (386*2π)/18565 weeks
387-.02628 .00677 (387*2π)/18565 weeks
388.02007 -.01529 (388*2π)/18565 weeks
389-.05828 .00516 (389*2π)/18565 weeks
390.05428 .0108 (390*2π)/18565 weeks
391-.05319 -.0204 (391*2π)/18565 weeks
392.03899 .0112 (392*2π)/18565 weeks
393-.04565 -.00255 (393*2π)/18565 weeks
394.05431 .00498 (394*2π)/18565 weeks
395-.0567 -.02908 (395*2π)/18565 weeks
396.0402 .01993 (396*2π)/18565 weeks
397-.04567 -.01278 (397*2π)/18565 weeks
398.06667 .00613 (398*2π)/18565 weeks
399-.07209 -.04806 (399*2π)/18565 weeks
400.04641 .0319 (400*2π)/18565 weeks
401-.06248 -.02786 (401*2π)/18565 weeks