The Booster Bullpen Market Index
The Booster Bullpen Market Index (BBMI) tracks the sealed Magic booster-box market in one number, with daily index value, breadth, era composition and history.
Current index reading
- Index value
- 108.81
- Snapshot date
- 2026-08-24
- Methodology version
- v1.3
- Basket size
- 218
- Advancers
- 67
- Decliners
- 13
- Unchanged
- 136
- Move over last 85 sessions
- +8.81%
Recent index history
| Date | Index value |
|---|---|
| 2026-08-11 | 107.49 |
| 2026-08-12 | 107.61 |
| 2026-08-13 | 107.69 |
| 2026-08-14 | 107.77 |
| 2026-08-15 | 107.85 |
| 2026-08-16 | 107.93 |
| 2026-08-17 | 108.05 |
| 2026-08-18 | 108.19 |
| 2026-08-19 | 108.28 |
| 2026-08-20 | 108.40 |
| 2026-08-21 | 108.57 |
| 2026-08-22 | 108.68 |
| 2026-08-23 | 108.65 |
| 2026-08-24 | 108.81 |
How the index is built
The BBMI is an equal-weighted daily index of sealed booster boxes spanning Modern, Vintage and Recent eras. It is recomputed once per day against fresh multi-source price aggregates. Full construction rules, including the winsorization applied to damp single product spikes, are documented on the Methodology page.