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V-Lab

News Corp Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Monday, July 27th, 2026

1 Day

31.14%

decreased by 2.12%

1 Week

29.84%

decreased by 3.42%

1 Month

27.77%

decreased by 5.49%

Analysis last updated: Friday, July 24, 2026 at 09:57 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of News Corp S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jun 19, 2013 to Jul 24, 2026

Model Insight

This model fits a time-varying baseline (a spline), so volatility mean-reverts toward a slowly-shifting long-run level rather than a constant. Short-run deviations decay with a half-life of 4 trading days.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.0883
6.10***
α

ARCH

Response to squared shocks

0.1467
4.24***
β

GARCH

Volatility persistence

0.6789
7.82***
γi Spline Coefficients
K=9
γ11.0430
2.66***
γ2-1.7413
-2.81***
γ31.2089
2.16**
γ4-0.8030
-1.04
γ50.3624
0.49
γ60.0547
0.12
γ7-0.5642
-1.63
γ80.8774
2.77***
γ9-0.5643
-2.53**

Persistence:

0.826

Half-life:

4 days