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V-Lab

Bloomberg Multiverse Bond Index Total Return Value Unhedged USD GJR-GARCH Volatility Analysis

Volatility prediction for Friday, August 21st, 2026

1 Day

4.00%

decreased by 0.07%

1 Week

4.02%

decreased by 0.05%

1 Month

4.09%

increased by 0.02%

Analysis last updated: Friday, August 21, 2026 at 08:19 PM UTC

Date Range:

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to

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graph of Bloomberg Multiverse Bond Index Total Return Value Unhedged USD GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Aug 31, 2000 to Apr 4, 2025

Model Insight

With persistence 0.996, volatility shocks have a half-life of 170 trading days (~0.7 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0006
12.22***
α

ARCH

Response to squared shocks

0.0391
18.69***
β

GARCH

Volatility persistence

0.9560
623.23***
γ

leverage

Additional response to negative shocks

0.0017
0.48

Persistence:

0.996

Half-life:

170 days