V-Lab
BTB Korea Co Ltd Spline ILLIQ Liquidity Analysis
Illiquidity prediction for Thursday, September 17th, 2026
1 Day
3,098.47
decreased by 329.32
1 Week
3,738.37
increased by 310.58
1 Month
2,665.16
decreased by 762.63
Analysis last updated: Thursday, September 17, 2026 at 08:02 PM UTC
News Impact Curve
How returns affect tomorrow's illiquidityIlliquidity Forecast
How illiquidity evolves over timeParameter Estimates
Apr 5, 2017 to Sep 14, 2026Model Insight
This model fits a time-varying baseline (a spline), so illiquidity mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 3 trading days.
μ
ILLIQ-SMEM Model
Tap to view equation
Time-varying baseline: illiquidity reverts to a slowly-shifting spline trend
| Param | Value | t-stat |
|---|---|---|
| ωconst | 0.8354 | 2.67*** |
| αARCH | 0.1467 | 5.19*** |
| βGARCH | 0.6347 | 7.60*** |
Spline Coefficients
K=10
| γ1 | -35.3234 | -5.63*** |
| γ2 | 49.4366 | 5.67*** |
| γ3 | -8.5041 | -2.29** |
| γ4 | -9.6402 | -4.83*** |
| γ5 | 2.4837 | 1.57 |
| γ6 | 6.7044 | 4.27*** |
| γ7 | -7.0009 | -4.51*** |
| γ8 | 2.7011 | 1.57 |
| γ9 | -2.3415 | -1.11 |
| γ10 | 8.0227 | 2.71*** |
0.781
Persistence3d
Half-lifeμ
ILLIQ-SMEM Model
Tap to view equation
| Parameter | Value | t-statistic |
|---|---|---|
ω const Unconditional variance weight | 0.8354 | 2.67*** |
α ARCH Response to squared shocks | 0.1467 | 5.19*** |
β GARCH Volatility persistence | 0.6347 | 7.60*** |
Spline Coefficients
K=10
| γ1 | -35.3234 | -5.63*** |
| γ2 | 49.4366 | 5.67*** |
| γ3 | -8.5041 | -2.29** |
| γ4 | -9.6402 | -4.83*** |
| γ5 | 2.4837 | 1.57 |
| γ6 | 6.7044 | 4.27*** |
| γ7 | -7.0009 | -4.51*** |
| γ8 | 2.7011 | 1.57 |
| γ9 | -2.3415 | -1.11 |
| γ10 | 8.0227 | 2.71*** |
Persistence:
0.781
Half-life:
3 days
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