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V-Lab

Tectonic Therapeutic Inc APARCH Volatility Analysis

Volatility prediction for Wednesday, September 16th, 2026

1 Day

99.51%

increased by 20.11%

1 Week

101.28%

increased by 21.88%

1 Month

102.42%

increased by 23.02%

Analysis last updated: Wednesday, September 16, 2026 at 02:42 AM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

5Y ·

All

graph of Tectonic Therapeutic Inc APARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jun 21, 2018 to Sep 11, 2026

Model Insight

Volatility shocks decay with a half-life of 1 trading day, meaning a shock loses half its impact after approximately 1 day. The volatility power δ = 0.50 sits below 2, so large shocks influence volatility less than quadratically, a more outlier-robust response than standard GARCH.

σ

APARCH Model

Tap to view equation

Shock decay: Shocks decay with a 1-day half-lifeδ = 0.50 · sub-quadratic power
ParamValuet-stat
ωconst1.0000
1.62
αARCH0.2205
2.38**
βGARCH0.4308
1.68*
γleverage0.4558
1.43
δpower0.5000
1.64

0.607

Persistence

1d

Half-life
σ

APARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

1.0000
1.62
α

ARCH

Response to squared shocks

0.2205
2.38**
β

GARCH

Volatility persistence

0.4308
1.68*
γ

leverage

Additional response to negative shocks

0.4558
1.43
δ

power

Transformation power

0.5000
1.64

Persistence:

0.607

Half-life:

1 days