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V-Lab
V-Lab

Zhihu Inc MEM Volatility Analysis

Volatility prediction for Friday, September 11th, 2026

1 Day

61.75%

increased by 0.35%

1 Week

62.95%

increased by 1.55%

1 Month

65.53%

increased by 4.13%

Analysis last updated: Friday, September 11, 2026 at 07:17 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of Zhihu Inc MEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Apr 22, 2022 to Sep 4, 2026

Model Insight

Volatility shocks decay with a half-life of 7 trading days, meaning a shock loses half its impact after approximately 7 days.

μ

MEM Model

Tap to view equation

Shock decay: Shocks decay with a 7-day half-life
ParamValuet-stat
ωconst1.8098
2.14**
αARCH0.2077
3.27***
βGARCH0.6944
11.76***

0.902

Persistence

7d

Half-life
μ

MEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.8098
2.14**
α

ARCH

Response to squared shocks

0.2077
3.27***
β

GARCH

Volatility persistence

0.6944
11.76***

Persistence:

0.902

Half-life:

7 days