V-Lab
Ito Yogyo Co Ltd GAS-GARCH Student T Volatility Analysis
Volatility prediction for Monday, August 24th, 2026
1 Day
2,240,589.92%
increased by 113,415.34%
1 Week
2,160,935.36%
increased by 33,760.78%
1 Month
1,886,559.41%
decreased by 240,615.17%
Analysis last updated: Saturday, August 22, 2026 at 11:08 PM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Mar 15, 2000 to Aug 21, 2026Boundary Parameters
Model Insight
The estimated Student-t degrees of freedom v = 2.00 sit at the infinite-variance boundary (v → 2): the model is attributing extreme moves to heavy tails rather than to volatility, so the volatility scale is unreliable here. See the boundary-parameters flag.
𝑓
GAS-GARCH-T Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 3.4160 | 5.64*** |
α ARCH Response to squared shocks | 0.1350 | 39.41*** |
β GARCH Volatility persistence | 0.9638 | 233.08*** |
ν DF Student-t tail thickness | 2.0000 | 9,345.79*** |
Persistence:
0.964
Half-life:
19 days
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