STAAR Surgical Company (STAA)
STAAR Surgical Company designs, develops, manufactures, markets and sells implantable eye lenses and supplemental delivery systems for placing the lenses in the eye. The company is headquartered in Lake Forest, California.
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 99.39% per annum.
- STAA price at the close of March 24, 2026 was $18.97 and was lower than the bottom border of the primary price channel by $7.57 (28.54%). This indicates a possible reversal in the primary trend direction.
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 57.63% per annum.
- STAA price at the close of March 24, 2026 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 STAA 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 11, 2025
End date: December 22, 2025
a = 0.0741
b = 0.0019
s = 0.1228
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × 0.0019) – 1
= 99.39%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.1228) – 1
= 63.43%
February 11, 2025 calculations
Top border of price channel:
Exp(Y975)
= Exp(a + b × X975 + 2 × s)
= Exp(a + b × 1,419 + 2 × s)
= Exp(0.0741 + 0.0019 × 1,419 + 2 × 0.1228)
= Exp(3.0024)
= $20.13
Bottom border of price channel:
Exp(Y975)
= Exp(a + b × X975 – 2 × s)
= Exp(a + b × 1,419 – 2 × s)
= Exp(0.0741 + 0.0019 × 1,419 – 2 × 0.1228)
= Exp(2.5112)
= $12.32
December 22, 2025 calculations
Top border of price channel:
Exp(Y1,192)
= Exp(a + b × X1,192 + 2 × s)
= Exp(a + b × 1,733 + 2 × s)
= Exp(0.0741 + 0.0019 × 1,733 + 2 × 0.1228)
= Exp(3.5961)
= $36.46
Bottom border of price channel:
Exp(Y1,192)
= Exp(a + b × X1,192 – 2 × s)
= Exp(a + b × 1,733 – 2 × s)
= Exp(0.0741 + 0.0019 × 1,733 – 2 × 0.1228)
= Exp(3.1049)
= $22.31
Description
- The primary trend is increasing.
- The growth rate of the primary trend is 99.39% per annum.
- STAA price at the close of March 24, 2026 was $18.97 and was lower than the bottom border of the primary price channel by $7.57 (28.54%). This indicates a possible reversal in the primary trend direction.
Secondary Trend
Start date: August 11, 2025
End date: March 24, 2026
a = 7.1819
b = -0.0024
s = 0.0722
Annual growth rate:
Exp(365 × b) – 1
= Exp(365 × -0.0024) – 1
= -57.63%
Price channel spread:
Exp(4 × s) – 1
= Exp(4 × 0.0722) – 1
= 33.46%
August 11, 2025 calculations
Top border of price channel:
Exp(Y1,099)
= Exp(a + b × X1,099 + 2 × s)
= Exp(a + b × 1,600 + 2 × s)
= Exp(7.1819 + -0.0024 × 1,600 + 2 × 0.0722)
= Exp(3.5616)
= $35.22
Bottom border of price channel:
Exp(Y1,099)
= Exp(a + b × X1,099 – 2 × s)
= Exp(a + b × 1,600 – 2 × s)
= Exp(7.1819 + -0.0024 × 1,600 – 2 × 0.0722)
= Exp(3.2730)
= $26.39
March 24, 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(7.1819 + -0.0024 × 1,825 + 2 × 0.0722)
= Exp(3.0322)
= $20.74
Bottom border of price channel:
Exp(Y1,254)
= Exp(a + b × X1,254 – 2 × s)
= Exp(a + b × 1,825 – 2 × s)
= Exp(7.1819 + -0.0024 × 1,825 – 2 × 0.0722)
= Exp(2.7436)
= $15.54
Description
- The secondary trend is decreasing.
- The decline rate of the secondary trend is 57.63% per annum.
- STAA price at the close of March 24, 2026 was inside the secondary price channel.