| Date | Bid | Offer |
|---|---|---|
| Jun 28 2019 | R$ 3.8316 | R$ 3.8322 |
| Jun 27 2019 | R$ 3.8636 | R$ 3.8642 |
| Jun 26 2019 | R$ 3.8435 | R$ 3.8441 |
| Jun 25 2019 | R$ 3.8297 | R$ 3.8303 |
| Jun 24 2019 | R$ 3.8228 | R$ 3.8234 |
| Jun 21 2019 | R$ 3.8249 | R$ 3.8255 |
| Jun 19 2019 | R$ 3.8717 | R$ 3.8723 |
| Jun 18 2019 | R$ 3.8602 | R$ 3.8608 |
| Jun 17 2019 | R$ 3.8889 | R$ 3.8895 |
| Jun 14 2019 | R$ 3.8807 | R$ 3.8813 |
| Jun 13 2019 | R$ 3.8423 | R$ 3.8429 |
| Jun 12 2019 | R$ 3.8431 | R$ 3.8437 |
| Jun 11 2019 | R$ 3.8658 | R$ 3.8664 |
| Jun 10 2019 | R$ 3.8784 | R$ 3.8790 |
| Jun 07 2019 | R$ 3.8565 | R$ 3.8571 |
| Jun 06 2019 | R$ 3.8720 | R$ 3.8726 |
| Jun 05 2019 | R$ 3.8605 | R$ 3.8611 |
| Jun 04 2019 | R$ 3.8704 | R$ 3.8710 |
| Jun 03 2019 | R$ 3.8997 | R$ 3.9003 |
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.