Interface Inc (TILE)
Interface, Inc., a modular flooring company, designs, produces and sells modular carpet products primarily in the Americas, Europe, and Asia-Pacific. The company is headquartered in Atlanta, Georgia.
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 92.22% per annum.
- TILE price at the close of December 4, 2025 was $27.80 and was lower than the bottom border of the primary price channel by $7.03 (20.19%). This indicates a possible reversal in the primary trend direction.
- The secondary trend is increasing.
- The growth rate of the secondary trend is 40.17% per annum.
- TILE price at the close of December 4, 2025 was inside the secondary price channel.
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 TILE 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 22, 2023
End date: February 20, 2025
a = 0.4833
b = 0.0018
s = 0.0983
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0018) – 1
= 92.22%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0983) – 1
= 48.17%
February 22, 2023 calculations
Top border of price channel:
Exp(Y555)
= Exp(a + b × X555 + 2 × s)
= Exp(a + b × 807 + 2 × s)
= Exp(0.4833 + 0.0018 × 807 + 2 × 0.0983)
= Exp(2.1247)
= $8.37
Bottom border of price channel:
Exp(Y555)
= Exp(a + b × X555 – 2 × s)
= Exp(a + b × 807 – 2 × s)
= Exp(0.4833 + 0.0018 × 807 – 2 × 0.0983)
= Exp(1.7315)
= $5.65
February 20, 2025 calculations
Top border of price channel:
Exp(Y1,055)
= Exp(a + b × X1,055 + 2 × s)
= Exp(a + b × 1,536 + 2 × s)
= Exp(0.4833 + 0.0018 × 1,536 + 2 × 0.0983)
= Exp(3.4299)
= $30.87
Bottom border of price channel:
Exp(Y1,055)
= Exp(a + b × X1,055 – 2 × s)
= Exp(a + b × 1,536 – 2 × s)
= Exp(0.4833 + 0.0018 × 1,536 – 2 × 0.0983)
= Exp(3.0367)
= $20.84
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 92.22% per annum.
- TILE price at the close of December 4, 2025 was $27.80 and was lower than the bottom border of the primary price channel by $7.03 (20.19%). This indicates a possible reversal in the primary trend direction.
Secondary Trend
Start date: February 9, 2024
End date: December 4, 2025
a = 1.6237
b = 0.0009
s = 0.1231
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0009) – 1
= 40.17%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.1231) – 1
= 63.65%
February 9, 2024 calculations
Top border of price channel:
Exp(Y798)
= Exp(a + b × X798 + 2 × s)
= Exp(a + b × 1,159 + 2 × s)
= Exp(1.6237 + 0.0009 × 1,159 + 2 × 0.1231)
= Exp(2.9422)
= $18.96
Bottom border of price channel:
Exp(Y798)
= Exp(a + b × X798 – 2 × s)
= Exp(a + b × 1,159 – 2 × s)
= Exp(1.6237 + 0.0009 × 1,159 – 2 × 0.1231)
= Exp(2.4496)
= $11.58
December 4, 2025 calculations
Top border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 + 2 × s)
= Exp(a + b × 1,823 + 2 × s)
= Exp(1.6237 + 0.0009 × 1,823 + 2 × 0.1231)
= Exp(3.5564)
= $35.04
Bottom border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,823 – 2 × s)
= Exp(1.6237 + 0.0009 × 1,823 – 2 × 0.1231)
= Exp(3.0639)
= $21.41
Description
- The secondary trend is increasing.
- The growth rate of the secondary trend is 40.17% per annum.
- TILE price at the close of December 4, 2025 was inside the secondary price channel.