# Massachusetts Regular Gasoline · Z-Score Stress Index

- Series code: `retail.state_ma.gasoline_regular.weekly.zsi`
- Units: σ · frequency: weekly
- Latest: **3.96 σ** (2026-09-28)
- History: 2003-05-26 to 2026-09-28, 1219 observations
- Change over 1 week: +0.14 (+3.8%)
- Change over 1 month: +2.42 (+156.9%)
- Change over 1 year: +4.04 (+5,310.3%)
- Change over 5 years: +1.93 (+95.5%)
- 52-week range: -0.86 (2026-02-23) – 3.96 (2026-09-28)
- Latest value is higher than 95% of the full history

## Recent observations

| Date | Value |
|---|---|
| 2026-09-28 | 3.96 |
| 2026-09-21 | 3.82 |
| 2026-09-14 | 3.17 |
| 2026-09-07 | 2.73 |
| 2026-08-31 | 2.06 |
| 2026-08-24 | 1.54 |
| 2026-08-17 | 1.17 |
| 2026-08-10 | 1.09 |
| 2026-08-03 | 1.11 |
| 2026-07-27 | 1.14 |
| 2026-07-20 | 0.97 |
| 2026-07-13 | 0.53 |

Source: Calculated by NewTide from EIA source data. Derived from public-domain EIA data.
Page: https://thinkingonenergy.com/data/retail.state_ma.gasoline_regular.weekly.zsi/