SLM Corp (SLM)
SLM Corporation, commonly known as Sallie Mae, specializes in originating and servicing private education loans for students and their families, facilitating access to higher education financing in the United States. Headquartered in Newark, Delaware, Sallie Mae has positioned itself as a significant player in the student loan market, offering innovative financial solutions designed to meet the diverse needs of borrowers. With a commitment to enhancing the education financing experience, the company combines technology and customer service to deliver efficient and flexible loan products.
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 50.25% per annum.
- SLM price at the close of November 21, 2025 was $27.89 and was lower than the bottom border of the primary price channel by $3.16 (10.19%). This indicates a possible reversal in the primary trend direction.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 38.63% per annum.
- SLM price at the close of November 21, 2025 was inside the secondary price channel.
- The direction of the secondary trend is opposite to the direction of the primary trend. This indicates a possible reversal in the direction of the primary trend.
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 SLM 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: February 16, 2023
End date: September 8, 2025
a = 1.5793
b = 0.0011
s = 0.0891
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0011) – 1
= 50.25%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0891) – 1
= 42.81%
February 16, 2023 calculations
Top border of price channel:
Exp(Y561)
= Exp(a + b × X561 + 2 × s)
= Exp(a + b × 815 + 2 × s)
= Exp(1.5793 + 0.0011 × 815 + 2 × 0.0891)
= Exp(2.6666)
= $14.39
Bottom border of price channel:
Exp(Y561)
= Exp(a + b × X561 – 2 × s)
= Exp(a + b × 815 – 2 × s)
= Exp(1.5793 + 0.0011 × 815 – 2 × 0.0891)
= Exp(2.3102)
= $10.08
September 8, 2025 calculations
Top border of price channel:
Exp(Y1,201)
= Exp(a + b × X1,201 + 2 × s)
= Exp(a + b × 1,750 + 2 × s)
= Exp(1.5793 + 0.0011 × 1,750 + 2 × 0.0891)
= Exp(3.7095)
= $40.83
Bottom border of price channel:
Exp(Y1,201)
= Exp(a + b × X1,201 – 2 × s)
= Exp(a + b × 1,750 – 2 × s)
= Exp(1.5793 + 0.0011 × 1,750 – 2 × 0.0891)
= Exp(3.3532)
= $28.59
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 50.25% per annum.
- SLM price at the close of November 21, 2025 was $27.89 and was lower than the bottom border of the primary price channel by $3.16 (10.19%). This indicates a possible reversal in the primary trend direction.
Secondary Trend
Start date: May 12, 2025
End date: November 21, 2025
a = 5.7190
b = -0.0013
s = 0.0407
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0013) – 1
= -38.63%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0407) – 1
= 17.67%
May 12, 2025 calculations
Top border of price channel:
Exp(Y1,120)
= Exp(a + b × X1,120 + 2 × s)
= Exp(a + b × 1,631 + 2 × s)
= Exp(5.7190 + -0.0013 × 1,631 + 2 × 0.0407)
= Exp(3.6187)
= $37.29
Bottom border of price channel:
Exp(Y1,120)
= Exp(a + b × X1,120 – 2 × s)
= Exp(a + b × 1,631 – 2 × s)
= Exp(5.7190 + -0.0013 × 1,631 – 2 × 0.0407)
= Exp(3.4560)
= $31.69
November 21, 2025 calculations
Top border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 + 2 × s)
= Exp(a + b × 1,824 + 2 × s)
= Exp(5.7190 + -0.0013 × 1,824 + 2 × 0.0407)
= Exp(3.3606)
= $28.81
Bottom border of price channel:
Exp(Y1,255)
= Exp(a + b × X1,255 – 2 × s)
= Exp(a + b × 1,824 – 2 × s)
= Exp(5.7190 + -0.0013 × 1,824 – 2 × 0.0407)
= Exp(3.1979)
= $24.48
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 38.63% per annum.
- SLM price at the close of November 21, 2025 was inside the secondary price channel.