Costco Wholesale Corporation (COST)
Model Evaluation — last 100 days for Costco Wholesale Corporation (COST)
MAPE: 0.87%
MAE: 8.20
Direction hit: 83.6%
P&L in Period:
--
| Trade Date |
Prediction For |
Actual |
Pred |
Δ actual |
Strategy Action |
Shares Held |
Strategy P&L (Day) |
Cum. P&L (Period) |
| 2025-07-21 |
2025-07-28 |
$933.80
|
$940.96 |
-17.15
|
FLAT
|
0.00 |
$0.00
|
$0.00
|
| 2025-07-22 |
2025-07-29 |
$935.48
|
$933.41 |
-12.08
|
FLAT
|
0.00 |
$0.00
|
$0.00
|
| 2025-07-23 |
2025-07-30 |
$933.99
|
$933.54 |
-7.62
|
FLAT
|
0.00 |
$0.00
|
$0.00
|
| 2025-07-24 |
2025-07-31 |
$934.57
|
$929.28 |
-6.62
|
FLAT
|
0.00 |
$0.00
|
$0.00
|
| 2025-07-25 |
2025-08-01 |
$927.51
|
$924.49 |
-6.29
|
FLAT
|
0.00 |
$0.00
|
$0.00
|
| 2025-07-28 |
2025-08-04 |
$939.64
|
$954.33 |
4.16
|
INITIAL BUY
|
1.07 |
$0.00
|
$0.00
|
| 2025-07-29 |
2025-08-05 |
$952.52
|
$947.39 |
18.53
|
SCALE-IN
|
1.61 |
$0.00
|
$0.00
|
| 2025-07-30 |
2025-08-06 |
$955.37
|
$943.97 |
20.80
|
SCALE-IN
|
2.14 |
$0.00
|
$0.00
|
| 2025-07-31 |
2025-08-07 |
$943.63
|
$933.20 |
16.12
|
SELL
|
0.00 |
$15.30
|
$15.30
|
| 2025-08-01 |
2025-08-08 |
$968.56
|
$968.17 |
28.92
|
INITIAL BUY
|
1.05 |
$0.00
|
$15.30
|
| 2025-08-04 |
2025-08-11 |
$977.45
|
$978.05 |
24.93
|
SCALE-IN
|
1.57 |
$0.00
|
$15.30
|
| 2025-08-05 |
2025-08-12 |
$980.98
|
$965.04 |
25.61
|
SCALE-IN
|
2.10 |
$0.00
|
$15.30
|
| 2025-08-06 |
2025-08-13 |
$988.74
|
$985.50 |
45.11
|
SCALE-IN
|
2.62 |
$0.00
|
$15.30
|
| 2025-08-07 |
2025-08-14 |
$991.25
|
$993.28 |
22.69
|
SCALE-IN
|
3.13 |
$0.00
|
$15.30
|
| 2025-08-08 |
2025-08-15 |
$978.85
|
$970.21 |
1.40
|
SELL
|
0.00 |
$71.29
|
$86.59
|
| 2025-08-11 |
2025-08-18 |
$975.39
|
$971.71 |
-5.59
|
FLAT
|
0.00 |
$0.00
|
$86.59
|
| 2025-08-12 |
2025-08-19 |
$972.04
|
$983.54 |
-16.70
|
FLAT
|
0.00 |
$0.00
|
$86.59
|
| 2025-08-13 |
2025-08-20 |
$979.35
|
$969.97 |
-11.90
|
FLAT
|
0.00 |
$0.00
|
$86.59
|
| 2025-08-14 |
2025-08-21 |
$980.85
|
$992.43 |
2.00
|
INITIAL BUY
|
1.03 |
$0.00
|
$86.59
|
| 2025-08-15 |
2025-08-22 |
$994.57
|
$989.05 |
19.18
|
SCALE-IN
|
1.54 |
$0.00
|
$86.59
|
| 2025-08-18 |
2025-08-25 |
$969.68
|
$969.24 |
-2.36
|
SELL
|
0.00 |
$7.82
|
$94.41
|
| 2025-08-19 |
2025-08-26 |
$958.54
|
$975.87 |
-20.81
|
FLAT
|
0.00 |
$0.00
|
$94.41
|
| 2025-08-20 |
2025-08-27 |
$941.58
|
$982.39 |
-39.27
|
FLAT
|
0.00 |
$0.00
|
$94.41
|
| 2025-08-21 |
2025-08-28 |
$941.34
|
$956.77 |
-53.23
|
FLAT
|
0.00 |
$0.00
|
$94.41
|
| 2025-08-22 |
2025-08-29 |
$949.52
|
$953.19 |
-20.16
|
FLAT
|
0.00 |
$0.00
|
$94.41
|
| 2025-08-25 |
2025-09-01 |
$944.96
|
$933.27 |
-13.58
|
FLAT
|
0.00 |
$0.00
|
$94.41
|
| 2025-08-26 |
2025-09-02 |
$943.32
|
$940.70 |
1.74
|
FLAT
|
0.00 |
$0.00
|
$94.41
|
| 2025-08-27 |
2025-09-03 |
$938.82
|
$937.48 |
-2.52
|
FLAT
|
0.00 |
$0.00
|
$94.41
|
| 2025-08-28 |
2025-09-04 |
$949.78
|
$967.75 |
0.26
|
INITIAL BUY
|
1.06 |
$0.00
|
$94.41
|
| 2025-08-29 |
2025-09-05 |
$955.90
|
$960.97 |
10.94
|
SCALE-IN
|
1.59 |
$0.00
|
$94.41
|
| 2025-09-02 |
2025-09-09 |
$963.48
|
$950.32 |
20.16
|
SCALE-IN
|
2.12 |
$0.00
|
$94.41
|
| 2025-09-03 |
2025-09-10 |
$971.85
|
$969.42 |
33.03
|
SCALE-IN
|
2.65 |
$0.00
|
$94.41
|
| 2025-09-04 |
2025-09-11 |
$979.25
|
$967.84 |
29.47
|
SCALE-IN
|
3.17 |
$0.00
|
$94.41
|
| 2025-09-05 |
2025-09-12 |
$956.29
|
$951.31 |
0.39
|
SELL
|
0.00 |
$54.59
|
$149.00
|
| 2025-09-08 |
2025-09-15 |
$964.32
|
$963.21 |
0.84
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-09 |
2025-09-16 |
$967.90
|
$968.50 |
-3.95
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-10 |
2025-09-17 |
$960.10
|
$945.57 |
-19.15
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-11 |
2025-09-18 |
$952.07
|
$964.30 |
-4.22
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-12 |
2025-09-19 |
$963.03
|
$965.56 |
-1.29
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-15 |
2025-09-22 |
$952.36
|
$960.09 |
-15.54
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-16 |
2025-09-23 |
$951.16
|
$941.88 |
-8.94
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-17 |
2025-09-24 |
$943.26
|
$960.12 |
-8.81
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-18 |
2025-09-25 |
$943.60
|
$948.75 |
-19.43
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-19 |
2025-09-26 |
$945.27
|
$951.38 |
-7.09
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-22 |
2025-09-29 |
$943.31
|
$940.34 |
-7.85
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-23 |
2025-09-30 |
$915.95
|
$939.10 |
-27.31
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-24 |
2025-10-01 |
$916.87
|
$933.92 |
-26.73
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-25 |
2025-10-02 |
$925.63
|
$928.91 |
-19.64
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-26 |
2025-10-03 |
$917.34
|
$903.85 |
-25.97
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-29 |
2025-10-06 |
$916.77
|
$911.40 |
0.82
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-09-30 |
2025-10-07 |
$915.38
|
$917.37 |
-1.49
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-10-01 |
2025-10-08 |
$910.94
|
$900.46 |
-14.69
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-10-02 |
2025-10-09 |
$914.80
|
$906.00 |
-2.54
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-10-03 |
2025-10-10 |
$914.80
|
$907.76 |
-1.97
|
FLAT
|
0.00 |
$0.00
|
$149.00
|
| 2025-10-06 |
2025-10-13 |
$942.89
|
$952.80 |
27.51
|
INITIAL BUY
|
1.10 |
$0.00
|
$149.00
|
| 2025-10-07 |
2025-10-14 |
$930.01
|
$942.57 |
19.07
|
SCALE-IN
|
1.64 |
$0.00
|
$149.00
|
| 2025-10-08 |
2025-10-15 |
$935.56
|
$931.99 |
20.76
|
SCALE-IN
|
2.19 |
$0.00
|
$149.00
|
| 2025-10-09 |
2025-10-16 |
$946.51
|
$936.24 |
31.71
|
SELL
|
0.00 |
$65.78
|
$214.78
|
| 2025-10-10 |
2025-10-17 |
$954.99
|
$948.78 |
12.10
|
INITIAL BUY
|
1.08 |
$0.00
|
$214.78
|
| 2025-10-13 |
2025-10-20 |
$925.62
|
$930.40 |
-4.39
|
SELL
|
0.00 |
$5.97
|
$220.75
|
| 2025-10-14 |
2025-10-21 |
$936.33
|
$936.23 |
0.77
|
FLAT
|
0.00 |
$0.00
|
$220.75
|
| 2025-10-15 |
2025-10-22 |
$936.11
|
$946.04 |
-10.40
|
FLAT
|
0.00 |
$0.00
|
$220.75
|
| 2025-10-16 |
2025-10-23 |
$937.50
|
$946.43 |
-17.49
|
INITIAL BUY
|
1.08 |
$0.00
|
$220.75
|
| 2025-10-22 |
2025-10-23 |
$942.05
|
$929.55 |
--
|
SELL
|
0.00 |
$0.00
|
$-1710.67
|
| 2025-10-23 |
2025-10-26 |
--
|
$948.78 |
--
|
FLAT
|
0.00 |
$0.00
|
--
|
| 2025-10-24 |
2025-10-27 |
$929.85
|
$955.29 |
--
|
FLAT
|
0.00 |
$0.00
|
--
|
| 2025-10-27 |
2025-10-30 |
--
|
$945.11 |
--
|
FLAT
|
0.00 |
$0.00
|
--
|
| 2025-10-25 |
2025-10-28 |
--
|
$951.87 |
--
|
FLAT
|
0.00 |
--
|
--
|
| 2025-10-26 |
2025-10-29 |
--
|
$947.25 |
--
|
FLAT
|
0.00 |
--
|
--
|
| 2025-10-28 |
2025-10-31 |
--
|
$941.26 |
--
|
FLAT
|
0.00 |
--
|
--
|
| 2025-10-29 |
2025-11-01 |
--
|
$960.18 |
--
|
FLAT
|
0.00 |
--
|
--
|
| 2025-10-30 |
2025-11-02 |
--
|
$933.26 |
--
|
FLAT
|
0.00 |
--
|
--
|
| 2025-10-31 |
2025-11-03 |
--
|
$950.34 |
--
|
FLAT
|
0.00 |
--
|
--
|
| 2025-11-01 |
2025-11-04 |
--
|
$948.90 |
--
|
FLAT
|
0.00 |
--
|
--
|
| 2025-11-02 |
2025-11-05 |
--
|
$947.48 |
--
|
FLAT
|
0.00 |
--
|
--
|
| 2025-11-03 |
2025-11-06 |
--
|
$931.99 |
--
|
FLAT
|
0.00 |
--
|
--
|