kappa = 0.10-0.20 (one-factor Hull-White / Vasicek)
| source | NAIC stochastic interest scenario generator calibration |
| derivation | data_calibrated |
| quality | calibrated |
| regulatory frameworks | NAIC VM-20 |
| set | 2026-05-25 |
| last reviewed | 2026-05-25 |
| next review due | 2026-12-31 |
Pulls toward long-run mean at speed kappa; longer half-life → wider distribution at long horizons.