Skip to main content
V-Lab

iShares US Real Estate ETF GAS-GARCH Student T Volatility Analysis

Volatility prediction for Wednesday, August 26th, 2026

1 Day

12.23%

decreased by 0.77%

1 Week

12.51%

decreased by 0.49%

1 Month

13.48%

increased by 0.48%

Analysis last updated: Tuesday, August 25, 2026 at 09:39 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of iShares US Real Estate ETF GAS-GARCH-T

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jun 16, 2000 to Aug 21, 2026

Model Insight

Volatility shocks decay with a half-life of 50 trading days, meaning a shock loses half its impact after approximately 50 days. Returns follow a Student-t distribution with v = 9.19 degrees of freedom, capturing fatter tails than a normal distribution.

𝑓

GAS-GARCH-T Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.6053
8.98***
α

ARCH

Response to squared shocks

0.1017
33.61***
β

GARCH

Volatility persistence

0.9862
616.00***
ν

DF

Student-t tail thickness

9.1862
5.58***

Persistence:

0.986

Half-life:

50 days