Key Facts
- The WTI crude proxy USO settled at US$114.88, a daily drop of 0.78% a modest slip in the fund that tracks WTI futures.
- Brazil’s Petrobras shares fell 1.92% to US$18.36 more than twice the decline in the crude proxy itself.
- Argentina’s YPF dropped 1.95% to close at US$48.67 the steepest fall of the regional oil names, just ahead of Petrobras.
- Colombia’s Ecopetrol was the sole gainer, rising 0.49% to US$16.39 bucking the regional trend as the only Latin American oil major to advance.
- US$114.88 is the USO fund’s share price, not the price of a barrel — the fund holds WTI futures, so its level should never be read as a crude price.
- Ecopetrol was the only regional oil name to rise while both Petrobras and YPF fell more than twice as far as crude did.
Today’s Focus
The USO fund, which tracks West Texas Intermediate crude, lost 0.78% on Wednesday, settling at US$114.88. The move pulled down most Latin American oil equities, with Petrobras sliding 1.92% to US$18.36 and YPF falling 1.95% to US$48.67.
Colombia’s Ecopetrol defied the downdraft, adding 0.49% to close at US$16.39. It was the only gainer among the regional names tracked, suggesting investors rotated into a stock that had previously lagged.
The Petrobras decline outpaced the crude move by a significant margin. The drop to US$18.36 reflected an extra layer of caution around Brazil’s state-controlled producer, even as pre-salt production remains a core earnings driver.
YPF’s 1.95% fall to US$48.67 was two and a half times the move in crude. Argentina’s Vaca Muerta play continues to draw strategic interest, but the share price was not immune from a session where oil prices edged lower.
What matters today. The Petrobras drop steepened well beyond the 0.78% dip in the crude proxy, signalling that company-specific concerns magnified a mild oil retreat in Brazil.
01 The session in one read
The USO fund, a widely followed proxy for WTI crude, settled at US$114.88, down 0.78% for the session on Wednesday, August 5, 2026. The decline was modest but it rippled unevenly through Latin America’s listed oil producers.
Petrobras absorbed the heaviest blow, falling 1.92% to US$18.36. YPF dropped 1.95% to US$48.67, while Ecopetrol defied the mood, rising 0.49% to US$16.39.
Wednesday’s price action shows that a relatively contained 0.78% decline in the USO crude proxy translated into a lopsided sell-off in Latin American oil names. Petrobras surrendered 1.92% and YPF gave up 1.95%, far exceeding the crude move, while Ecopetrol eked out a 0.49% gain. The session reveals that, for the Brazilian and Argentine majors, investors are currently pricing in an additional risk premium beyond the direction of crude. The variable to watch is whether Petrobras can decouple from this amplified beta if crude steadies. Note that US$114.88 is the USO fund’s share price, not the price of a barrel.
02 The board
The price board for Wednesday, August 5, 2026 shows a clear fault line. The WTI crude proxy USO eased to US$114.88, setting a cautious tone for the session. Investors treated the fractional decline as a cue to take profits in overheated names.
Petrobras closed at US$18.36, a loss of 1.92% that far exceeded the crude move. YPF followed the same script, shedding 1.95% to reach US$48.67. Ecopetrol was the outlier, posting a 0.49% gain to finish at US$16.39 and registering as the session’s only green candle among the region’s major oil proxies.
| Asset | Level | Change |
|---|---|---|
| WTI crude (USO) | US$114.88 | -0.78% |
| Petrobras | US$18.36 | -1.92% |
| Ecopetrol | US$16.39 | +0.49% |
| YPF | US$48.67 | -1.95% |
Source: RT close, 2026-08-05. Where a commodity has no spot feed, an exchange-traded tracker or leading producer is shown as a labelled proxy.
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Latin America — Cross-Market Board
| Instrument | Last | Change | YoY | Prev. | High | Low | Volume |
|---|---|---|---|---|---|---|---|
| IBOV | 171,336.99 | -0.52% | +10.36% | 172,236.05 | 173,272 | 170,569 | — |
| IPSA | 10,597.06 | +0.07% | — | 10,589.65 | 10,635 | 10,554 | — |
| IPC MEX | 71,564.96 | -0.42% | +13.95% | 71,866.30 | 72,057 | 71,295 | 202,220,399 |
| MERVAL | 2,848,945 | — | -10.97% | 2,859,051 | — | — | — |
| COLCAP | 2,528.01 | -1.88% | — | — | — | — | — |
| USD/BRL | 5.58 | +1.35% | +4.73% | 5.51 | 5.61 | 5.51 | — |
| EUR/BRL | 6.23 | +1.66% | +1.16% | 6.13 | 6.26 | 6.18 | — |
| USD/MXN | 18.61 | +0.40% | +0.88% | 18.53 | 18.73 | 18.42 | — |
| USD/CLP | 983.69 | +1.70% | +5.77% | 967.23 | 985.56 | 963.98 | — |
| USD/COP | 3,292 | +5.53% | -11.90% | 3,120 | 3,309 | 3,259 | — |
| USD/PEN | 3.41 | -0.05% | +3.20% | 3.41 | 3.42 | 3.41 | — |
| USD/ARS | 1,545 | -0.03% | +9.71% | 1,546 | 1,545 | 1,545 | — |
| USD/UYU | 40.43 | +3.52% | +3.01% | 39.06 | 40.45 | 40.43 | — |
| USD/PYG | 6,196 | +1.99% | -10.88% | 6,075 | 6,450 | 6,196 | — |
| USD/BOB | 11.68 | +0.19% | +73.37% | 11.66 | 11.74 | 11.68 | — |
| USD/DOP | 60.46 | +2.41% | -4.73% | 59.04 | 60.46 | 60.40 | — |
| USD/CRC | 445.62 | +1.24% | -8.92% | 440.16 | 446.56 | 445.62 | — |
| USD/GTQ | 7.64 | +2.97% | +2.13% | 7.42 | 7.64 | 7.63 | — |
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03 What moved it
The 0.78% dip in the USO crude proxy to US$114.88 was the session’s gravitational pull. Market participants reassessed the demand outlook, leading to a gentle downward drift that nevertheless triggered outsize moves in single-stock names.
The Petrobras slide to US$18.36 cannot be explained by crude alone. The 1.92% decline suggests investors are layering on a Brazil-specific risk discount, likely tied to capital discipline concerns or political noise around fuel pricing, even as the company’s pre-salt output remains robust.
04 The Latin American read
Brazil’s pre-salt engine did not insulate Petrobras on a day when the USO proxy settled at US$114.88. A 1.92% drop to US$18.36 signals that the market is currently applying a heavy local-risk filter to the state-controlled giant.
Argentina’s Vaca Muerta story, channelled through YPF, displayed similar vulnerability. YPF fell 1.95% to US$48.67, amplifying a much smaller move in the crude proxy. Colombia’s Ecopetrol, up 0.49% to US$16.39, provided a rare bright spot, hinting that value-seeking investors may see it as a catch-up play. The session contained no direct price action from Guyana’s offshore boom or Venezuela’s state-owned PDVSA, but their shadow hangs over the region’s risk calculus.
05 The names to watch
Petrobras, at US$18.36, remains the bellwether. Its 1.92% decline on Wednesday makes it the most reactive name to both crude direction and domestic sentiment, and any further slip in the USO proxy below US$114.88 could test the stock’s near-term support.
Ecopetrol’s 0.49% advance to US$16.39 marks it as the contrarian bet. The Colombian major bucked the regional trend, and traders will now watch whether this momentum can hold if crude remains rangebound. YPF, closing at US$48.67, stays tied to the Vaca Muerta export narrative and remains highly sensitive to Argentina’s macro gyrations.
06 The outlook
The divergence between a mild 0.78% drop in the crude proxy and the steep falls in Petrobras and YPF suggests the market is pricing company-specific headwinds. If the USO fund stabilises near US$114.88, the focus will shift to whether these Latin American names can reclaim lost ground, with Ecopetrol already showing a path to positive territory.
07 What to watch
- USO crude proxy level: Watch whether the USO fund holds above US$114.00; a break below could drag Petrobras and YPF sharply lower again.
- Petrobras discount: Monitor if the gap between crude moves and Petrobras share moves widens, signalling rising Brazil-specific political or fiscal risk.
- Ecopetrol momentum: Check whether the 0.49% gain to US$16.39 attracts follow-on buying or proves to be a one-session rotation in a value name.
- Argentina macro fluctuations: YPF at US$48.67 remains highly geared to domestic policy shifts; any news on capital controls or Vaca Muerta pipeline takeaway will move the stock.
Frequently Asked Questions
Why did Petrobras fall more than crude?
Petrobras dropped 1.92% to US$18.36 while the WTI proxy USO fell only 0.78%, suggesting investors priced in additional concerns around Brazil’s state-owned producer beyond the oil move.
Which Latin American oil stock rose on Wednesday?
Ecopetrol was the sole gainer, rising 0.49% to US$16.39, bucking the broader trend that saw Petrobras and YPF decline.
How did YPF perform?
YPF fell 1.95% to US$48.67, tracking the crude proxy lower but amplifying the move, reflecting sensitivity to both oil prices and Argentina’s economic climate.
What is the USO and what did it close at?
The USO is an exchange-traded fund that holds WTI crude futures; its share price is not the price of a barrel. On Wednesday the fund settled at US$114.88, a loss of 0.78% for the session.
This article was produced by The Rio Times’ automated AI newsroom. Editorial responsibility: Matthias Camenzind, Publisher and Editor-in-Chief. The Rio Times also runs Ask Rio Times, which answers from 100,000+ of our own articles, the daily Latin America Power Map, and prediction-market odds on elections and markets.. How we use AI · Report an error
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