Stock Price Trends

Steel Dynamics Inc (STLD)

Steel Dynamics, Inc., is a steel producer and metal recycler in the United States.

Stock Price Trends

Stock price trends estimated using linear regression.

Key facts

  • The primary trend is increasing.
  • The growth rate of the primary trend is 8.72% per annum.
  • STLD price at the close of July 25, 2024 was $127.60 and was inside the primary price channel.
  • The secondary trend is increasing.
  • The growth rate of the secondary trend is 45.29% per annum.
  • STLD price at the close of July 25, 2024 was lower than the bottom border of the secondary price channel by $4.97 (3.75%). This indicates a possible reversal in the secondary trend direction.

Linear Regression Model

Model equation:
Yi = α + β × Xi + εi

Top border of price channel:
Exp(Yi) = Exp(a + b × Xi + 2 × s)

Bottom border of price channel:
Exp(Yi) = Exp(a + b × Xi – 2 × s)

where:

i - observation number
Yi - natural logarithm of STLD price
Xi - time index, 1 day interval
σ - standard deviation of εi
a - estimator of α
b - estimator of β
s - estimator of σ
Exp() - calculates the exponent of e


Primary Trend

Start date: October 21, 2022
End date: February 21, 2024

a = 4.3390

b = 0.0002

s = 0.0769

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × 0.0002) – 1
= 8.72%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.0769) – 1
= 36.03%

October 21, 2022 calculations

Top border of price channel:

Exp(Y817)
= Exp(a + b × X817 + 2 × s)
= Exp(a + b × 1,183 + 2 × s)
= Exp(4.3390 + 0.0002 × 1,183 + 2 × 0.0769)
= Exp(4.7637)
= $117.18

Bottom border of price channel:

Exp(Y817)
= Exp(a + b × X817 – 2 × s)
= Exp(a + b × 1,183 – 2 × s)
= Exp(4.3390 + 0.0002 × 1,183 – 2 × 0.0769)
= Exp(4.4560)
= $86.14

February 21, 2024 calculations

Top border of price channel:

Exp(Y1,150)
= Exp(a + b × X1,150 + 2 × s)
= Exp(a + b × 1,671 + 2 × s)
= Exp(4.3390 + 0.0002 × 1,671 + 2 × 0.0769)
= Exp(4.8755)
= $131.03

Bottom border of price channel:

Exp(Y1,150)
= Exp(a + b × X1,150 – 2 × s)
= Exp(a + b × 1,671 – 2 × s)
= Exp(4.3390 + 0.0002 × 1,671 – 2 × 0.0769)
= Exp(4.5677)
= $96.32

Description

  • The primary trend is increasing.
  • The growth rate of the primary trend is 8.72% per annum.
  • STLD price at the close of July 25, 2024 was $127.60 and was inside the primary price channel.

Secondary Trend

Start date: May 3, 2023
End date: June 3, 2024

a = 3.1180

b = 0.0010

s = 0.0499

Annual growth rate:

Exp(365 × b) – 1
= Exp(365 × 0.0010) – 1
= 45.29%

Price channel spread:

Exp(4 × s) – 1
= Exp(4 × 0.0499) – 1
= 22.08%

May 3, 2023 calculations

Top border of price channel:

Exp(Y949)
= Exp(a + b × X949 + 2 × s)
= Exp(a + b × 1,377 + 2 × s)
= Exp(3.1180 + 0.0010 × 1,377 + 2 × 0.0499)
= Exp(4.6271)
= $102.22

Bottom border of price channel:

Exp(Y949)
= Exp(a + b × X949 – 2 × s)
= Exp(a + b × 1,377 – 2 × s)
= Exp(3.1180 + 0.0010 × 1,377 – 2 × 0.0499)
= Exp(4.4276)
= $83.73

June 3, 2024 calculations

Top border of price channel:

Exp(Y1,221)
= Exp(a + b × X1,221 + 2 × s)
= Exp(a + b × 1,774 + 2 × s)
= Exp(3.1180 + 0.0010 × 1,774 + 2 × 0.0499)
= Exp(5.0334)
= $153.45

Bottom border of price channel:

Exp(Y1,221)
= Exp(a + b × X1,221 – 2 × s)
= Exp(a + b × 1,774 – 2 × s)
= Exp(3.1180 + 0.0010 × 1,774 – 2 × 0.0499)
= Exp(4.8339)
= $125.70

Description

  • The secondary trend is increasing.
  • The growth rate of the secondary trend is 45.29% per annum.
  • STLD price at the close of July 25, 2024 was lower than the bottom border of the secondary price channel by $4.97 (3.75%). This indicates a possible reversal in the secondary trend direction.