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Merck & Co Inc MEM Volatility Analysis

Volatility prediction for Thursday, October 15th, 2026

1 Day

32.28%

increased by 2.46%

1 Week

32.11%

increased by 2.29%

1 Month

31.50%

increased by 1.68%

Analysis last updated: Wednesday, October 14, 2026 at 10:43 PM UTC

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Date Range:

from

10/14/2024

to

10/14/2026

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of Merck & Co Inc MEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 2, 1990 to Oct 9, 2026

Model Insight

Volatility shocks decay with a half-life of 34 trading days, meaning a shock loses half its impact after approximately 34 days.

μ

MEM Model

Tap to view equation

Shock decay: Shocks decay with a 34-day half-life
ParamValuet-stat
ωconst0.0600
2.14**
αARCH0.1498
9.25***
βGARCH0.8302
74.34***

0.980

Persistence

34d

Half-life
μ

MEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0600
2.14**
α

ARCH

Response to squared shocks

0.1498
9.25***
β

GARCH

Volatility persistence

0.8302
74.34***

Persistence:

0.980

Half-life:

34 days