{"schemaVersion":1,"source":"Yahoo Finance price/volume; Trend Screeners model-book calculations","sourceUrl":"https://finance.yahoo.com/","generated":"2026-07-29","calculation":"advance = (peakPrice / pivot - 1) * 100; percentages rounded in article","limitations":"Retrospectively selected historical case, not a strategy success rate or realized investment return. Weekly chart data only; daily/hourly trade-simulation inputs are not included.","case":{"slug":"model-amgen-1989","sym":"AMGN","name":"Amgen","market":"US","bench":"S&P 500","baseStart":"1989-06-05","baseEnd":"1989-10-09","baseLen":19,"baseDepth":21.9,"baseLow":0.78125,"baseLowDate":"1989-08-14","pivot":1,"breakout":"1989-10-16","breakoutClose":1.09375,"volSurge":138,"peak":"1992-01-13","peakPrice":9.78125,"advance":878.1,"weeks":117,"shakeout":28,"shakeFrom":"1989-11-13","shakeTo":"1990-01-29","ongoing":false},"weeklyColumns":["date","open","high","low","close","volume"],"weekly":[["1988-06-06",0.598958,0.661458,0.598958,0.651042,39115200],["1988-06-13",0.640625,0.651042,0.583333,0.588542,32088000],["1988-06-20",0.588542,0.604167,0.567708,0.578125,47798400],["1988-06-27",0.578125,0.578125,0.557292,0.567708,17798400],["1988-07-04",0.557292,0.578125,0.552083,0.5625,29385600],["1988-07-11",0.5625,0.5625,0.526042,0.546875,54220800],["1988-07-18",0.557292,0.598958,0.546875,0.572917,24902400],["1988-07-25",0.567708,0.598958,0.546875,0.59375,14880000],["1988-08-01",0.588542,0.645833,0.567708,0.625,71860800],["1988-08-08",0.625,0.666667,0.614583,0.651042,42072000],["1988-08-15",0.651042,0.661458,0.625,0.645833,16857600],["1988-08-22",0.635417,0.651042,0.630208,0.640625,15388800],["1988-08-29",0.635417,0.674479,0.635417,0.640625,21124800],["1988-09-05",0.640625,0.651042,0.635417,0.640625,7468800],["1988-09-12",0.661458,0.666667,0.640625,0.645833,14846400],["1988-09-19",0.645833,0.645833,0.614583,0.645833,20107200],["1988-09-26",0.635417,0.703125,0.630208,0.682292,30216000],["1988-10-03",0.671875,0.692708,0.645833,0.651042,27518400],["1988-10-10",0.645833,0.677083,0.645833,0.65625,17035200],["1988-10-17",0.658854,0.677083,0.65625,0.677083,11188800],["1988-10-24",0.677083,0.677083,0.635417,0.661458,14736000],["1988-10-31",0.661458,0.661458,0.614583,0.619792,16305600],["1988-11-07",0.619792,0.625,0.572917,0.614583,44217600],["1988-11-14",0.609375,0.619792,0.567708,0.583333,13180800],["1988-11-21",0.583333,0.614583,0.572917,0.604167,14443200],["1988-11-28",0.609375,0.6875,0.604167,0.6875,62649600],["1988-12-05",0.6875,0.692708,0.630208,0.671875,54408000],["1988-12-12",0.666667,0.703125,0.661458,0.692708,36883200],["1988-12-19",0.697917,0.703125,0.661458,0.695313,36556800],["1988-12-26",0.697917,0.703125,0.671875,0.703125,9312000],["1989-01-02",0.703125,0.708333,0.645833,0.692708,43022400],["1989-01-09",0.697917,0.697917,0.645833,0.664063,73416000],["1989-01-16",0.666667,0.75,0.65625,0.739583,85060800],["1989-01-23",0.744792,0.802083,0.723958,0.770833,130464000],["1989-01-30",0.770833,0.796875,0.744792,0.776042,90048000],["1989-02-06",0.765625,0.828125,0.75,0.807292,110275200],["1989-02-13",0.796875,0.822917,0.755208,0.804688,89049600],["1989-02-20",0.8125,0.822917,0.765625,0.776042,31996800],["1989-02-27",0.765625,0.796875,0.760417,0.791667,34200000],["1989-03-06",0.791667,0.885417,0.791667,0.864583,80942400],["1989-03-13",0.859375,0.882813,0.838542,0.869792,51940800],["1989-03-20",0.864583,0.921875,0.854167,0.921875,49075200],["1989-03-27",0.838542,0.895833,0.822917,0.854167,106329600],["1989-04-03",0.859375,0.901042,0.84375,0.885417,31996800],["1989-04-10",0.875,0.875,0.8125,0.838542,74054400],["1989-04-17",0.838542,0.854167,0.770833,0.817708,51696000],["1989-04-24",0.8125,0.838542,0.802083,0.833333,27168000],["1989-05-01",0.838542,0.848958,0.8125,0.8125,24960000],["1989-05-08",0.817708,0.859375,0.744792,0.833333,99393600],["1989-05-15",0.833333,0.84375,0.760417,0.796875,79027200],["1989-05-22",0.807292,0.838542,0.760417,0.807292,55574400],["1989-05-29",0.807292,0.942708,0.796875,0.932292,178900800],["1989-06-05",0.932292,1,0.911458,0.953125,188860800],["1989-06-12",0.947917,0.973958,0.901042,0.932292,65779200],["1989-06-19",0.932292,0.947917,0.890625,0.942708,74505600],["1989-06-26",0.942708,0.947917,0.885417,0.901042,58521600],["1989-07-03",0.901042,0.947917,0.895833,0.945313,35318400],["1989-07-10",0.942708,0.979167,0.927083,0.963542,65289600],["1989-07-17",0.958333,0.96875,0.927083,0.9375,38956800],["1989-07-24",0.927083,0.9375,0.895833,0.916667,41414400],["1989-07-31",0.90625,0.927083,0.875,0.875,41683200],["1989-08-07",0.875,0.890625,0.802083,0.822917,91209600],["1989-08-14",0.822917,0.848958,0.78125,0.8125,53414400],["1989-08-21",0.8125,0.838542,0.791667,0.838542,24216000],["1989-08-28",0.828125,0.833333,0.802083,0.825521,34368000],["1989-09-04",0.838542,0.890625,0.833333,0.890625,49022400],["1989-09-11",0.880208,0.901042,0.825521,0.848958,61291200],["1989-09-18",0.854167,0.90625,0.848958,0.895833,46478400],["1989-09-25",0.911458,0.921875,0.875,0.875,32438400],["1989-10-02",0.875,0.973958,0.869792,0.971354,77961600],["1989-10-09",0.973958,1.08333,0.953125,0.973958,116673600],["1989-10-16",0.9375,1.10938,0.916667,1.09375,153427200],["1989-10-23",1.11979,1.21875,1.08854,1.125,163099200],["1989-10-30",1.13802,1.21875,1.13542,1.1875,81024000],["1989-11-06",1.1875,1.23958,1.15104,1.22396,64790400],["1989-11-13",1.22396,1.25521,1.18229,1.24479,74894400],["1989-11-20",1.25,1.25,1.16667,1.21875,47836800],["1989-11-27",1.21615,1.22917,1.11979,1.13802,56452800],["1989-12-04",1.13021,1.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