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Severn Trent PLC Zero Slope Spline-GARCH Volatility Analysis
Volatility Prediction for Friday, February 20th, 2026:21.63% (-1.09%)
Analysis last updated: Saturday, February 21, 2026 at 12:47 AM UTC
Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Severn Trent PLC S0GARCH
paramt-stat
ω0.825210.98
α0.12965.93
β0.660314.28
γ1-0.0621-2.89
γ20.13303.99
γ3-0.1673-6.53
γ40.16936.33
γ5-0.1012-2.72
γ60.02770.61
γ70.01570.45
γ8-0.0267-1.20
γ90.01390.84
Estimation Period:
Jan 1, 1990 to Feb 13, 2026
Impact of return on volatility tomorrow
Volatility Forecasts