Stock Analysis on Net

Walgreens Boots Alliance Inc. (NASDAQ:WBA)

This company has been moved to the archive! The financial data has not been updated since July 9, 2020.

Capital Asset Pricing Model (CAPM)

Microsoft Excel

Capital asset pricing model (CAPM) indicates what should be the expected or required rate of return on risky assets like Walgreens Boots Alliance Inc. common stock.


Rates of Return

Walgreens Boots Alliance Inc., monthly rates of return

Microsoft Excel
Walgreens Boots Alliance Inc. (WBA) Standard & Poor’s 500 (S&P 500)
t Date PriceWBA,t1 DividendWBA,t1 RWBA,t2 PriceS&P 500,t RS&P 500,t3
Sep 30, 2013 $53.80 1,681.55
1. Oct 31, 2013 $59.24 10.11% 1,756.54 4.46%
2. Nov 30, 2013 $59.20 $0.315 0.46% 1,805.81 2.80%
3. Dec 31, 2013 $57.44 -2.97% 1,848.36 2.36%
. . . . . . .
. . . . . . .
. . . . . . .
70. Jul 31, 2019 $54.49 -0.33% 2,980.38 1.31%
71. Aug 31, 2019 $51.19 $0.458 -5.22% 2,926.46 -1.81%
Average (R): 0.37% 0.84%
Standard deviation: 7.21% 3.32%
Walgreens Boots Alliance Inc. (WBA) Standard & Poor’s 500 (S&P 500)
t Date PriceWBA,t1 DividendWBA,t1 RWBA,t2 PriceS&P 500,t RS&P 500,t3
Sep 30, 2013 $53.80 1,681.55
1. Oct 31, 2013 $59.24 10.11% 1,756.54 4.46%
2. Nov 30, 2013 $59.20 $0.315 0.46% 1,805.81 2.80%
3. Dec 31, 2013 $57.44 -2.97% 1,848.36 2.36%
4. Jan 31, 2014 $57.35 -0.16% 1,782.59 -3.56%
5. Feb 28, 2014 $67.95 $0.315 19.03% 1,859.45 4.31%
6. Mar 31, 2014 $66.03 -2.83% 1,872.34 0.69%
7. Apr 30, 2014 $67.90 2.83% 1,883.95 0.62%
8. May 31, 2014 $71.91 $0.315 6.37% 1,923.57 2.10%
9. Jun 30, 2014 $74.13 3.09% 1,960.23 1.91%
10. Jul 31, 2014 $68.77 -7.23% 1,930.67 -1.51%
11. Aug 31, 2014 $60.52 $0.3375 -11.51% 2,003.37 3.77%
12. Sep 30, 2014 $59.27 -2.07% 1,972.29 -1.55%
13. Oct 31, 2014 $64.22 8.35% 2,018.05 2.32%
14. Nov 30, 2014 $68.61 $0.3375 7.36% 2,067.56 2.45%
15. Dec 31, 2014 $76.20 11.06% 2,058.90 -0.42%
16. Jan 31, 2015 $73.75 -3.22% 1,994.99 -3.10%
17. Feb 28, 2015 $83.08 $0.3375 13.11% 2,104.50 5.49%
18. Mar 31, 2015 $84.68 1.93% 2,067.89 -1.74%
19. Apr 30, 2015 $82.93 -2.07% 2,085.51 0.85%
20. May 31, 2015 $85.84 $0.3375 3.92% 2,107.39 1.05%
21. Jun 30, 2015 $84.44 -1.63% 2,063.11 -2.10%
22. Jul 31, 2015 $96.63 14.44% 2,103.84 1.97%
23. Aug 31, 2015 $86.55 $0.36 -10.06% 1,972.18 -6.26%
24. Sep 30, 2015 $83.10 -3.99% 1,920.03 -2.64%
25. Oct 31, 2015 $84.68 1.90% 2,079.36 8.30%
26. Nov 30, 2015 $84.03 $0.36 -0.34% 2,080.41 0.05%
27. Dec 31, 2015 $85.16 1.34% 2,043.94 -1.75%
28. Jan 31, 2016 $79.72 -6.39% 1,940.24 -5.07%
29. Feb 29, 2016 $78.94 $0.36 -0.53% 1,932.23 -0.41%
30. Mar 31, 2016 $84.24 6.71% 2,059.74 6.60%
31. Apr 30, 2016 $79.28 -5.89% 2,065.30 0.27%
32. May 31, 2016 $77.40 $0.36 -1.92% 2,096.95 1.53%
33. Jun 30, 2016 $83.27 7.58% 2,098.86 0.09%
34. Jul 31, 2016 $79.25 -4.83% 2,173.60 3.56%
35. Aug 31, 2016 $80.71 $0.375 2.32% 2,170.95 -0.12%
36. Sep 30, 2016 $80.62 -0.11% 2,168.27 -0.12%
37. Oct 31, 2016 $82.73 2.62% 2,126.15 -1.94%
38. Nov 30, 2016 $84.73 $0.375 2.87% 2,198.81 3.42%
39. Dec 31, 2016 $82.76 -2.33% 2,238.83 1.82%
40. Jan 31, 2017 $81.94 -0.99% 2,278.87 1.79%
41. Feb 28, 2017 $86.38 $0.375 5.88% 2,363.64 3.72%
42. Mar 31, 2017 $83.05 -3.86% 2,362.72 -0.04%
43. Apr 30, 2017 $86.54 4.20% 2,384.20 0.91%
44. May 31, 2017 $81.02 $0.375 -5.95% 2,411.80 1.16%
45. Jun 30, 2017 $78.31 -3.34% 2,423.41 0.48%
46. Jul 31, 2017 $80.67 3.01% 2,470.30 1.93%
47. Aug 31, 2017 $81.50 $0.40 1.52% 2,471.65 0.05%
48. Sep 30, 2017 $77.22 -5.25% 2,519.36 1.93%
49. Oct 31, 2017 $66.27 -14.18% 2,575.26 2.22%
50. Nov 30, 2017 $72.76 $0.40 10.40% 2,647.58 2.81%
51. Dec 31, 2017 $72.62 -0.19% 2,673.61 0.98%
52. Jan 31, 2018 $75.26 3.64% 2,823.81 5.62%
53. Feb 28, 2018 $68.89 $0.40 -7.93% 2,713.83 -3.89%
54. Mar 31, 2018 $65.47 -4.96% 2,640.87 -2.69%
55. Apr 30, 2018 $66.45 1.50% 2,648.05 0.27%
56. May 31, 2018 $62.39 $0.40 -5.51% 2,705.27 2.16%
57. Jun 30, 2018 $60.02 -3.80% 2,718.37 0.48%
58. Jul 31, 2018 $67.62 12.66% 2,816.29 3.60%
59. Aug 31, 2018 $68.56 $0.44 2.04% 2,901.52 3.03%
60. Sep 30, 2018 $72.90 6.33% 2,913.98 0.43%
61. Oct 31, 2018 $79.77 9.42% 2,711.74 -6.94%
62. Nov 30, 2018 $84.67 $0.44 6.69% 2,760.17 1.79%
63. Dec 31, 2018 $68.33 -19.30% 2,506.85 -9.18%
64. Jan 31, 2019 $72.26 5.75% 2,704.10 7.87%
65. Feb 28, 2019 $71.19 $0.44 -0.87% 2,784.49 2.97%
66. Mar 31, 2019 $63.27 -11.13% 2,834.40 1.79%
67. Apr 30, 2019 $53.57 -15.33% 2,945.83 3.93%
68. May 31, 2019 $49.34 $0.44 -7.07% 2,752.06 -6.58%
69. Jun 30, 2019 $54.67 10.80% 2,941.76 6.89%
70. Jul 31, 2019 $54.49 -0.33% 2,980.38 1.31%
71. Aug 31, 2019 $51.19 $0.458 -5.22% 2,926.46 -1.81%
Average (R): 0.37% 0.84%
Standard deviation: 7.21% 3.32%

Show all

1 Data in US$ per share of common stock, adjusted for splits and stock dividends.

2 Rate of return on common stock of WBA during period t

3 Rate of return on S&P 500 (the market portfolio proxy) during period t


Variance and Covariance

Walgreens Boots Alliance Inc., calculation of variance and covariance of returns

Microsoft Excel
t Date RWBA,t RS&P 500,t (RWBA,tRWBA)2 (RS&P 500,tRS&P 500)2 (RWBA,tRWBA)×(RS&P 500,tRS&P 500)
1. Oct 31, 2013 10.11% 4.46% 94.97 13.12 35.29
2. Nov 30, 2013 0.46% 2.80% 0.01 3.87 0.19
3. Dec 31, 2013 -2.97% 2.36% 11.15 2.31 -5.07
. . . . . . .
. . . . . . .
. . . . . . .
70. Jul 31, 2019 -0.33% 1.31% 0.48 0.23 -0.33
71. Aug 31, 2019 -5.22% -1.81% 31.16 7.01 14.78
Total (Σ): 3,643.64 771.17 709.61
t Date RWBA,t RS&P 500,t (RWBA,tRWBA)2 (RS&P 500,tRS&P 500)2 (RWBA,tRWBA)×(RS&P 500,tRS&P 500)
1. Oct 31, 2013 10.11% 4.46% 94.97 13.12 35.29
2. Nov 30, 2013 0.46% 2.80% 0.01 3.87 0.19
3. Dec 31, 2013 -2.97% 2.36% 11.15 2.31 -5.07
4. Jan 31, 2014 -0.16% -3.56% 0.27 19.33 2.30
5. Feb 28, 2014 19.03% 4.31% 348.42 12.07 64.84
6. Mar 31, 2014 -2.83% 0.69% 10.19 0.02 0.46
7. Apr 30, 2014 2.83% 0.62% 6.08 0.05 -0.54
8. May 31, 2014 6.37% 2.10% 36.04 1.60 7.59
9. Jun 30, 2014 3.09% 1.91% 7.40 1.14 2.91
10. Jul 31, 2014 -7.23% -1.51% 57.71 5.50 17.82
11. Aug 31, 2014 -11.51% 3.77% 140.95 8.57 -34.76
12. Sep 30, 2014 -2.07% -1.55% 5.91 5.71 5.81
13. Oct 31, 2014 8.35% 2.32% 63.77 2.20 11.84
14. Nov 30, 2014 7.36% 2.45% 48.93 2.61 11.30
15. Dec 31, 2014 11.06% -0.42% 114.41 1.58 -13.44
16. Jan 31, 2015 -3.22% -3.10% 12.83 15.54 14.12
17. Feb 28, 2015 13.11% 5.49% 162.36 21.63 59.27
18. Mar 31, 2015 1.93% -1.74% 2.43 6.64 -4.02
19. Apr 30, 2015 -2.07% 0.85% 5.92 0.00 -0.03
20. May 31, 2015 3.92% 1.05% 12.60 0.04 0.75
21. Jun 30, 2015 -1.63% -2.10% 3.99 8.64 5.87
22. Jul 31, 2015 14.44% 1.97% 197.96 1.29 15.99
23. Aug 31, 2015 -10.06% -6.26% 108.69 50.35 73.98
24. Sep 30, 2015 -3.99% -2.64% 18.94 12.13 15.16
25. Oct 31, 2015 1.90% 8.30% 2.36 55.66 11.45
26. Nov 30, 2015 -0.34% 0.05% 0.50 0.62 0.56
27. Dec 31, 2015 1.34% -1.75% 0.96 6.71 -2.54
28. Jan 31, 2016 -6.39% -5.07% 45.62 34.95 39.93
29. Feb 29, 2016 -0.53% -0.41% 0.80 1.56 1.12
30. Mar 31, 2016 6.71% 6.60% 40.29 33.19 36.57
31. Apr 30, 2016 -5.89% 0.27% 39.12 0.32 3.55
32. May 31, 2016 -1.92% 1.53% 5.21 0.48 -1.59
33. Jun 30, 2016 7.58% 0.09% 52.10 0.56 -5.39
34. Jul 31, 2016 -4.83% 3.56% 26.98 7.41 -14.14
35. Aug 31, 2016 2.32% -0.12% 3.80 0.92 -1.87
36. Sep 30, 2016 -0.11% -0.12% 0.23 0.92 0.46
37. Oct 31, 2016 2.62% -1.94% 5.07 7.73 -6.26
38. Nov 30, 2016 2.87% 3.42% 6.27 6.65 6.46
39. Dec 31, 2016 -2.33% 1.82% 7.24 0.96 -2.64
40. Jan 31, 2017 -0.99% 1.79% 1.84 0.90 -1.29
41. Feb 28, 2017 5.88% 3.72% 30.36 8.31 15.88
42. Mar 31, 2017 -3.86% -0.04% 17.82 0.77 3.70
43. Apr 30, 2017 4.20% 0.91% 14.71 0.01 0.27
44. May 31, 2017 -5.95% 1.16% 39.84 0.10 -2.02
45. Jun 30, 2017 -3.34% 0.48% 13.77 0.13 1.32
46. Jul 31, 2017 3.01% 1.93% 7.01 1.20 2.90
47. Aug 31, 2017 1.52% 0.05% 1.34 0.61 -0.91
48. Sep 30, 2017 -5.25% 1.93% 31.56 1.19 -6.14
49. Oct 31, 2017 -14.18% 2.22% 211.60 1.91 -20.09
50. Nov 30, 2017 10.40% 2.81% 100.61 3.88 19.76
51. Dec 31, 2017 -0.19% 0.98% 0.31 0.02 -0.08
52. Jan 31, 2018 3.64% 5.62% 10.69 22.85 15.63
53. Feb 28, 2018 -7.93% -3.89% 68.87 22.40 39.28
54. Mar 31, 2018 -4.96% -2.69% 28.42 12.44 18.80
55. Apr 30, 2018 1.50% 0.27% 1.28 0.32 -0.64
56. May 31, 2018 -5.51% 2.16% 34.51 1.75 -7.77
57. Jun 30, 2018 -3.80% 0.48% 17.35 0.13 1.47
58. Jul 31, 2018 12.66% 3.60% 151.20 7.64 33.99
59. Aug 31, 2018 2.04% 3.03% 2.80 4.79 3.66
60. Sep 30, 2018 6.33% 0.43% 35.57 0.17 -2.44
61. Oct 31, 2018 9.42% -6.94% 82.04 60.50 -70.45
62. Nov 30, 2018 6.69% 1.79% 40.04 0.90 6.00
63. Dec 31, 2018 -19.30% -9.18% 386.70 100.31 196.96
64. Jan 31, 2019 5.75% 7.87% 29.00 49.43 37.86
65. Feb 28, 2019 -0.87% 2.97% 1.53 4.56 -2.64
66. Mar 31, 2019 -11.13% 1.79% 132.05 0.91 -10.97
67. Apr 30, 2019 -15.33% 3.93% 246.41 9.57 -48.56
68. May 31, 2019 -7.07% -6.58% 55.37 54.99 55.18
69. Jun 30, 2019 10.80% 6.89% 108.92 36.66 63.19
70. Jul 31, 2019 -0.33% 1.31% 0.48 0.23 -0.33
71. Aug 31, 2019 -5.22% -1.81% 31.16 7.01 14.78
Total (Σ): 3,643.64 771.17 709.61

Show all

VarianceWBA = Σ(RWBA,tRWBA)2 ÷ (71 – 1)
= 3,643.64 ÷ (71 – 1)
= 52.05

VarianceS&P 500 = Σ(RS&P 500,tRS&P 500)2 ÷ (71 – 1)
= 771.17 ÷ (71 – 1)
= 11.02

CovarianceWBA, S&P 500 = Σ(RWBA,tRWBA)×(RS&P 500,tRS&P 500) ÷ (71 – 1)
= 709.61 ÷ (71 – 1)
= 10.14


Systematic Risk (β) Estimation

Microsoft Excel
VarianceWBA 52.05
VarianceS&P 500 11.02
CovarianceWBA, S&P 500 10.14
Correlation coefficientWBA, S&P 5001 0.42
βWBA2 0.92
αWBA3 -0.40%

Calculations

1 Correlation coefficientWBA, S&P 500
= CovarianceWBA, S&P 500 ÷ (Standard deviationWBA × Standard deviationS&P 500)
= 10.14 ÷ (7.21% × 3.32%)
= 0.42

2 βWBA
= CovarianceWBA, S&P 500 ÷ VarianceS&P 500
= 10.14 ÷ 11.02
= 0.92

3 αWBA
= AverageWBA – βWBA × AverageS&P 500
= 0.37%0.92 × 0.84%
= -0.40%


Expected Rate of Return

Microsoft Excel
Assumptions
Rate of return on LT Treasury Composite1 RF 4.57%
Expected rate of return on market portfolio2 E(RM) 13.82%
Systematic risk (β) of Walgreens Boots Alliance Inc. common stock βWBA 0.92
 
Expected rate of return on Walgreens Boots Alliance Inc. common stock3 E(RWBA) 13.08%

1 Unweighted average of bid yields on all outstanding fixed-coupon U.S. Treasury bonds neither due or callable in less than 10 years (risk-free rate of return proxy).

2 See details »

3 E(RWBA) = RF + βWBA [E(RM) – RF]
= 4.57% + 0.92 [13.82%4.57%]
= 13.08%