V-Lab
Diana Tea Co Ltd MF2-GARCH Volatility Analysis
Volatility prediction for Monday, July 27th, 2026
1 Day
36.40%
1 Week
39.88%
1 Month
43.33%
Analysis last updated: Sunday, July 26, 2026 at 01:15 AM UTC
News Impact Curve
How returns affect tomorrow's volatilityVolatility Forecast
How volatility evolves over timeParameter Estimates
Sep 4, 2008 to Jul 24, 2026Model Insight
This asset shows a rare inverse leverage effect: positive returns raise next-day volatility 85% more than negative returns. Volatility rises more after gains than after losses, the reverse of the usual leverage effect and uncommon among risky assets.
MF2-GARCH Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
m window Rolling window length | 26 | |
α ARCH Response to squared shocks | 0.2327 | 21.90*** |
β GARCH Volatility persistence | 0.4728 | 13.21*** |
γ leverage Additional response to negative shocks | -0.1068 | -7.44*** |
λ₁ tau intercept Baseline long-term coefficient | 2.2271 | 0.55 |
λ₂ forecast adj. Forecast performance sensitivity | 0.2443 | 0.55 |
λ₃ tau persistence Long-term factor persistence | 0.5358 | 0.63 |
Persistence:
0.652
Half-life:
2 days
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