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Miami International Hold Inc MEM Volatility Analysis

High-persistence model: shocks decay very slowly, so the theoretical long-run value may not be practically meaningful

Volatility prediction for Monday, October 19th, 2026

1 Day

23.95%

decreased by 1.32%

1 Week

24.02%

decreased by 1.25%

1 Month

24.27%

decreased by 1.00%

Analysis last updated: Friday, October 16, 2026 at 11:24 PM UTC

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Date Range:

from

10/16/2024

to

10/16/2026

6M ·

1Y ·

All

graph of Miami International Hold Inc MEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Aug 14, 2025 to Oct 16, 2026

Model Insight

Estimated persistence of 1.000 is at or above 1 (non-stationary): volatility shocks do not decay and the long-run variance is undefined, so long-horizon forecasts should be treated with caution.

μ

MEM Model

Tap to view equation

High persistence: persistence 1.000 ≥ 1, shocks do not decay
ParamValuet-stat
ωconst0.0061
0.11
αARCH0.1305
1.90*
βGARCH0.8695
19.01***

1.000

Persistence

-

Half-life
μ

MEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0061
0.11
α

ARCH

Response to squared shocks

0.1305
1.90*
β

GARCH

Volatility persistence

0.8695
19.01***

Persistence:

1.000

Half-life:

-