Westamerica Bancorporation (WABC)
Westamerica Bancorporation, headquartered in San Rafael, California, is a prominent banking holding company that operates Westamerica Bank. The company provides a comprehensive range of financial products and services tailored to meet the needs of both individual and commercial clients. With a strong emphasis on customer service and community banking, Westamerica Bancorporation is committed to fostering long-term relationships and delivering personalized banking solutions. As a well-established player in the regional banking sector, the company focuses on prudent risk management and sustainable growth.
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 17.36% per annum.
- WABC price at the close of March 25, 2026 was $51.47 and was lower than the bottom border of the primary price channel by $1.79 (3.37%). This indicates a possible reversal in the primary trend direction.
- The secondary trend is increasing.
- The growth rate of the secondary trend is 3.19% per annum.
- WABC price at the close of March 25, 2026 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 WABC 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: March 22, 2023
End date: March 31, 2025
a = 3.3173
b = 0.0004
s = 0.0712
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0004) – 1
= 17.36%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0712) – 1
= 32.94%
March 22, 2023 calculations
Top border of price channel:
Exp(Y500)
= Exp(a + b × X500 + 2 × s)
= Exp(a + b × 726 + 2 × s)
= Exp(3.3173 + 0.0004 × 726 + 2 × 0.0712)
= Exp(3.7780)
= $43.73
Bottom border of price channel:
Exp(Y500)
= Exp(a + b × X500 – 2 × s)
= Exp(a + b × 726 – 2 × s)
= Exp(3.3173 + 0.0004 × 726 – 2 × 0.0712)
= Exp(3.4933)
= $32.89
March 31, 2025 calculations
Top border of price channel:
Exp(Y1,007)
= Exp(a + b × X1,007 + 2 × s)
= Exp(a + b × 1,466 + 2 × s)
= Exp(3.3173 + 0.0004 × 1,466 + 2 × 0.0712)
= Exp(4.1026)
= $60.50
Bottom border of price channel:
Exp(Y1,007)
= Exp(a + b × X1,007 – 2 × s)
= Exp(a + b × 1,466 – 2 × s)
= Exp(3.3173 + 0.0004 × 1,466 – 2 × 0.0712)
= Exp(3.8178)
= $45.50
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 17.36% per annum.
- WABC price at the close of March 25, 2026 was $51.47 and was lower than the bottom border of the primary price channel by $1.79 (3.37%). This indicates a possible reversal in the primary trend direction.
Secondary Trend
Start date: October 30, 2023
End date: March 25, 2026
a = 3.7452
b = 0.0001
s = 0.0561
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0001) – 1
= 3.19%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0561) – 1
= 25.14%
October 30, 2023 calculations
Top border of price channel:
Exp(Y653)
= Exp(a + b × X653 + 2 × s)
= Exp(a + b × 948 + 2 × s)
= Exp(3.7452 + 0.0001 × 948 + 2 × 0.0561)
= Exp(3.9389)
= $51.36
Bottom border of price channel:
Exp(Y653)
= Exp(a + b × X653 – 2 × s)
= Exp(a + b × 948 – 2 × s)
= Exp(3.7452 + 0.0001 × 948 – 2 × 0.0561)
= Exp(3.7147)
= $41.05
March 25, 2026 calculations
Top border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 + 2 × s)
= Exp(a + b × 1,825 + 2 × s)
= Exp(3.7452 + 0.0001 × 1,825 + 2 × 0.0561)
= Exp(4.0144)
= $55.39
Bottom border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(3.7452 + 0.0001 × 1,825 – 2 × 0.0561)
= Exp(3.7902)
= $44.26
Description
- The secondary trend is increasing.
- The growth rate of the secondary trend is 3.19% per annum.
- WABC price at the close of March 25, 2026 was inside the secondary price channel.