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V-Lab

S&P BSE SENSEX Index MEM Volatility Analysis

Volatility prediction for Tuesday, September 15th, 2026

1 Day

10.72%

increased by 1.12%

1 Week

11.26%

increased by 1.66%

1 Month

13.18%

increased by 3.58%

Analysis last updated: Friday, September 11, 2026 at 12:02 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

10Y ·

All

graph of S&P BSE SENSEX Index MEM

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

May 31, 1990 to Sep 11, 2026

Model Insight

With persistence 0.998, volatility shocks have a half-life of 307 trading days (~1.2 years), close to a unit root, so long-run forecasts are highly sensitive to this estimate.

μ

MEM Model

Tap to view equation

High persistence: persistence 0.998, shock half-life ~307 days
ParamValuet-stat
ωconst0.0247
2.77***
αARCH0.2119
15.09***
βGARCH0.7858
69.63***

0.998

Persistence

307d

Half-life
μ

MEM Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.0247
2.77***
α

ARCH

Response to squared shocks

0.2119
15.09***
β

GARCH

Volatility persistence

0.7858
69.63***

Persistence:

0.998

Half-life:

307 days