| Date | Bid | Offer |
|---|---|---|
| Apr 30 2019 | R$ 3.9447 | R$ 3.9453 |
| Apr 29 2019 | R$ 3.9358 | R$ 3.9364 |
| Apr 26 2019 | R$ 3.9347 | R$ 3.9353 |
| Apr 25 2019 | R$ 3.9719 | R$ 3.9725 |
| Apr 24 2019 | R$ 3.9624 | R$ 3.9630 |
| Apr 23 2019 | R$ 3.9430 | R$ 3.9436 |
| Apr 22 2019 | R$ 3.9224 | R$ 3.9230 |
| Apr 18 2019 | R$ 3.9364 | R$ 3.9370 |
| Apr 17 2019 | R$ 3.9219 | R$ 3.9225 |
| Apr 16 2019 | R$ 3.8907 | R$ 3.8913 |
| Apr 15 2019 | R$ 3.8724 | R$ 3.8730 |
| Apr 12 2019 | R$ 3.8679 | R$ 3.8685 |
| Apr 11 2019 | R$ 3.8393 | R$ 3.8399 |
| Apr 10 2019 | R$ 3.8339 | R$ 3.8345 |
| Apr 09 2019 | R$ 3.8557 | R$ 3.8563 |
| Apr 08 2019 | R$ 3.8652 | R$ 3.8658 |
| Apr 05 2019 | R$ 3.8616 | R$ 3.8622 |
| Apr 04 2019 | R$ 3.8707 | R$ 3.8713 |
| Apr 03 2019 | R$ 3.8430 | R$ 3.8436 |
| Apr 02 2019 | R$ 3.8655 | R$ 3.8661 |
| Apr 01 2019 | R$ 3.8676 | R$ 3.8682 |
Source: Brazilian Central Bank
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Ptax is the main reference rate for the US Dollar in Brazil. It's published daily by the Brazilian Central Bank based on the quotes received from the major foreign exchange dealers in the Brazilian market. It's released by 1 PM (GMT-3) every business day.