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Bloomberg US Government Inflation-Linked Bond Index Total Return Unhedged USD Zero Slope Spline-GARCH Volatility Analysis

Volatility prediction for Friday, October 16th, 2026

1 Day

4.44%

increased by 0.27%

1 Week

4.46%

increased by 0.29%

1 Month

4.54%

increased by 0.37%

Analysis last updated: Friday, October 16, 2026 at 11:50 PM UTC

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Date Range:

from

10/15/2024

to

10/15/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Bloomberg US Government Inflation-Linked Bond Index Total Return Unhedged USD S0GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Feb 28, 1997 to Oct 8, 2026

Model Insight

With persistence 0.993, volatility shocks have a half-life of 105 trading days (~0.4 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

τ

Zero Slope Spline-GARCH Model

Tap to view equation

High persistence: persistence 0.993, shock half-life ~105 days
ParamValuet-stat
ωconst0.4766
2.95***
αARCH0.0640
8.33***
βGARCH0.9294
117.38***
∑γi Spline Coefficients
K=2
γ1-0.0107
-3.28***
γ20.0125
3.05***

0.993

Persistence

105d

Half-life
τ

Zero Slope Spline-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.4766
2.95***
α

ARCH

Response to squared shocks

0.0640
8.33***
β

GARCH

Volatility persistence

0.9294
117.38***
∑γi Spline Coefficients
K=2
γ1-0.0107
-3.28***
γ20.0125
3.05***

Persistence:

0.993

Half-life:

105 days