Stock Analysis on Net

Tesla Inc. (NASDAQ:TSLA)

$24.99

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 Tesla Inc. common stock.

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Rates of Return

Tesla Inc., monthly rates of return

Microsoft Excel
Tesla Inc. (TSLA) Standard & Poor’s 500 (S&P 500)
t Date PriceTSLA,t1 DividendTSLA,t1 RTSLA,t2 PriceS&P 500,t RS&P 500,t3
Jan 31, 2021
1. Feb 28, 2021
2. Mar 31, 2021
3. Apr 30, 2021
. . . . . . .
. . . . . . .
. . . . . . .
58. Nov 30, 2025
59. Dec 31, 2025
Average (R):
Standard deviation:
Tesla Inc. (TSLA) Standard & Poor’s 500 (S&P 500)
t Date PriceTSLA,t1 DividendTSLA,t1 RTSLA,t2 PriceS&P 500,t RS&P 500,t3
Jan 31, 2021
1. Feb 28, 2021
2. Mar 31, 2021
3. Apr 30, 2021
4. May 31, 2021
5. Jun 30, 2021
6. Jul 31, 2021
7. Aug 31, 2021
8. Sep 30, 2021
9. Oct 31, 2021
10. Nov 30, 2021
11. Dec 31, 2021
12. Jan 31, 2022
13. Feb 28, 2022
14. Mar 31, 2022
15. Apr 30, 2022
16. May 31, 2022
17. Jun 30, 2022
18. Jul 31, 2022
19. Aug 31, 2022
20. Sep 30, 2022
21. Oct 31, 2022
22. Nov 30, 2022
23. Dec 31, 2022
24. Jan 31, 2023
25. Feb 28, 2023
26. Mar 31, 2023
27. Apr 30, 2023
28. May 31, 2023
29. Jun 30, 2023
30. Jul 31, 2023
31. Aug 31, 2023
32. Sep 30, 2023
33. Oct 31, 2023
34. Nov 30, 2023
35. Dec 31, 2023
36. Jan 31, 2024
37. Feb 29, 2024
38. Mar 31, 2024
39. Apr 30, 2024
40. May 31, 2024
41. Jun 30, 2024
42. Jul 31, 2024
43. Aug 31, 2024
44. Sep 30, 2024
45. Oct 31, 2024
46. Nov 30, 2024
47. Dec 31, 2024
48. Jan 31, 2025
49. Feb 28, 2025
50. Mar 31, 2025
51. Apr 30, 2025
52. May 31, 2025
53. Jun 30, 2025
54. Jul 31, 2025
55. Aug 31, 2025
56. Sep 30, 2025
57. Oct 31, 2025
58. Nov 30, 2025
59. Dec 31, 2025
Average (R):
Standard deviation:

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 TSLA during period t

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


Variance and Covariance

Tesla Inc., calculation of variance and covariance of returns

Microsoft Excel
t Date RTSLA,t RS&P 500,t (RTSLA,tRTSLA)2 (RS&P 500,tRS&P 500)2 (RTSLA,tRTSLA)×(RS&P 500,tRS&P 500)
1. Feb 28, 2021
2. Mar 31, 2021
3. Apr 30, 2021
. . . . . . .
. . . . . . .
. . . . . . .
58. Nov 30, 2025
59. Dec 31, 2025
Total (Σ):
t Date RTSLA,t RS&P 500,t (RTSLA,tRTSLA)2 (RS&P 500,tRS&P 500)2 (RTSLA,tRTSLA)×(RS&P 500,tRS&P 500)
1. Feb 28, 2021
2. Mar 31, 2021
3. Apr 30, 2021
4. May 31, 2021
5. Jun 30, 2021
6. Jul 31, 2021
7. Aug 31, 2021
8. Sep 30, 2021
9. Oct 31, 2021
10. Nov 30, 2021
11. Dec 31, 2021
12. Jan 31, 2022
13. Feb 28, 2022
14. Mar 31, 2022
15. Apr 30, 2022
16. May 31, 2022
17. Jun 30, 2022
18. Jul 31, 2022
19. Aug 31, 2022
20. Sep 30, 2022
21. Oct 31, 2022
22. Nov 30, 2022
23. Dec 31, 2022
24. Jan 31, 2023
25. Feb 28, 2023
26. Mar 31, 2023
27. Apr 30, 2023
28. May 31, 2023
29. Jun 30, 2023
30. Jul 31, 2023
31. Aug 31, 2023
32. Sep 30, 2023
33. Oct 31, 2023
34. Nov 30, 2023
35. Dec 31, 2023
36. Jan 31, 2024
37. Feb 29, 2024
38. Mar 31, 2024
39. Apr 30, 2024
40. May 31, 2024
41. Jun 30, 2024
42. Jul 31, 2024
43. Aug 31, 2024
44. Sep 30, 2024
45. Oct 31, 2024
46. Nov 30, 2024
47. Dec 31, 2024
48. Jan 31, 2025
49. Feb 28, 2025
50. Mar 31, 2025
51. Apr 30, 2025
52. May 31, 2025
53. Jun 30, 2025
54. Jul 31, 2025
55. Aug 31, 2025
56. Sep 30, 2025
57. Oct 31, 2025
58. Nov 30, 2025
59. Dec 31, 2025
Total (Σ):

Show all

VarianceTSLA = Σ(RTSLA,tRTSLA)2 ÷ (59 – 1)
= ÷ (59 – 1)
=

VarianceS&P 500 = Σ(RS&P 500,tRS&P 500)2 ÷ (59 – 1)
= ÷ (59 – 1)
=

CovarianceTSLA, S&P 500 = Σ(RTSLA,tRTSLA)×(RS&P 500,tRS&P 500) ÷ (59 – 1)
= ÷ (59 – 1)
=


Systematic Risk (β) Estimation

Microsoft Excel
VarianceTSLA
VarianceS&P 500
CovarianceTSLA, S&P 500
Correlation coefficientTSLA, S&P 5001
βTSLA2
αTSLA3

Calculations

1 Correlation coefficientTSLA, S&P 500
= CovarianceTSLA, S&P 500 ÷ (Standard deviationTSLA × Standard deviationS&P 500)
= ÷ ( × )
=

2 βTSLA
= CovarianceTSLA, S&P 500 ÷ VarianceS&P 500
= ÷
=

3 αTSLA
= AverageTSLA – βTSLA × AverageS&P 500
= ×
=


Expected Rate of Return

Microsoft Excel
Assumptions
Rate of return on LT Treasury Composite1 RF
Expected rate of return on market portfolio2 E(RM)
Systematic risk (β) of Tesla Inc. common stock βTSLA
 
Expected rate of return on Tesla Inc. common stock3 E(RTSLA)

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(RTSLA) = RF + βTSLA [E(RM) – RF]
= + []
=