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S&P MERVAL Argentina Total Return Index ARS EGARCH Volatility Analysis

Volatility prediction for Monday, October 19th, 2026

1 Day

27.55%

decreased by 1.26%

1 Week

28.32%

decreased by 0.49%

1 Month

31.09%

increased by 2.28%

Analysis last updated: Friday, October 16, 2026 at 09:25 PM UTC

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Date Range:

from

10/16/2024

to

10/16/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of S&P MERVAL Argentina Total Return Index ARS EGARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 5, 1990 to Oct 16, 2026

Model Insight

Volatility shocks decay with a half-life of 23 trading days, meaning a shock loses half its impact after approximately 23 days.

σ

EGARCH Model

Tap to view equation

Shock decay: Shocks decay with a 23-day half-life
ParamValuet-stat
ωconst0.0612
5.45***
αARCH0.2442
7.26***
βGARCH0.9699
160.82***
γleverage-0.0316
-1.15

0.970

Persistence

23d

Half-life
σ

EGARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0612
5.45***
α

ARCH

Response to squared shocks

0.2442
7.26***
β

GARCH

Volatility persistence

0.9699
160.82***
γ

leverage

Additional response to negative shocks

-0.0316
-1.15

Persistence:

0.970

Half-life:

23 days