B3 index
Índice de Energia Elétrica (IEEX)
The Índice de Energia Elétrica (IEEX) closed at 149,386.22 points on 2026-10-16. Change: +0.50% on the day, +11.82% in the month, +21.40% in the year, +38.91% in 12 months.
The Índice de Energia Elétrica (IEEX) is an index that tracks the performance of the stocks of companies in the electric power sector.
session 2026-10-16
previous session 2026-10-15: 148,645.67
end of previous month 2026-09-30: 133,589.64
end of previous year 2025-12-30: 123,055.71
base on 2025-10-16: 107,544.33
History
Daily close in points since 2010-01-04: 4165 sessions. Hover a point for the exact figure.
Performance 2021-10-18 → 2026-10-16
In the period 2021-10-18 to 2026-10-16, the largest drop of the Índice de Energia Elétrica (IEEX) from a peak was -20.22%, from the peak on 2023-12-28 to the trough on 2025-01-03. Return in the period: +85.71%; annualised volatility: 17.82%.
| measure | value | how it is measured |
|---|---|---|
| Return in the period | +85.71% | last close over first close of the period |
| Annualised return | +13.20% | the same return spread over a year |
| Largest drop (drawdown) | -20.22% | from the peak on 2023-12-28 to the trough on 2025-01-03 |
| Annualised volatility | 17.82% | standard deviation of daily changes, scaled to a year |
| Largest one-day rise | +7.28% | |
| Largest one-day drop | -3.94% |
1248 sessions, last 5 years of the series. Past performance; not investment advice. Same numbers, with the premises, open and with no key: /indices/IEEX/desempenho.
The data in JSON
- /indices/IEEX/precos — the daily close; without a key, a sample of the last 30 sessions; the full series comes with a free key.
- /indices/IEEX/desempenho — return, largest drop and volatility for any period, open, no key.
- All the B3 indices we keep
How to cite
Dados B3 — Índice de Energia Elétrica (IEEX): daily close in points, data through 2026-10-16. https://dadosb3.com/indices/IEEX?lang=en
Other indices
Closing points from B3 (index statistics). It is a TOTAL RETURN index by the B3 methodology: payouts (dividends, interest on equity, distributions) are reinvested in the theoretical portfolio, so the points already include them. It is not an asset that trades. The name and the values of the index belong to B3; we keep the public close and cite the source.
Coverage: 4165 sessions, 2010-01-04 → 2026-10-16 · Source: B3, index statistics
Sources: CVM (open data, ODbL) and B3 (COTAHIST). Not affiliated with B3 or the CVM. Not investment advice.
Numbers on this page are live. Data version 2026-10-18-pl-classe-versoes · page generated 2026-10-19 01:12 UTC. If this does not match /saude, you are reading a cached copy.