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V-Lab

Schwab Core Bond ETF EGARCH Volatility Analysis

Volatility prediction for Wednesday, September 9th, 2026

1 Day

4.07%

decreased by 0.04%

1 Week

4.07%

decreased by 0.04%

1 Month

4.07%

decreased by 0.04%

Analysis last updated: Tuesday, September 8, 2026 at 10:42 PM UTC

Date Range:

from

to

6M ·

1Y ·

All

graph of Schwab Core Bond ETF EGARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Feb 5, 2025 to Sep 4, 2026

Model Insight

Volatility shocks decay with a half-life of 39 trading days, meaning a shock loses half its impact after approximately 39 days.

σ

EGARCH Model

Tap to view equation

Shock decay: Shocks decay with a 39-day half-life
ParamValuet-stat
ωconst-0.0478
-1.10
αARCH0.0898
1.55
βGARCH0.9824
54.66***
γleverage-0.0438
-0.88

0.982

Persistence

39d

Half-life
σ

EGARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

-0.0478
-1.10
α

ARCH

Response to squared shocks

0.0898
1.55
β

GARCH

Volatility persistence

0.9824
54.66***
γ

leverage

Additional response to negative shocks

-0.0438
-0.88

Persistence:

0.982

Half-life:

39 days