Internal Market Brief
Weekly Market Brief
WTI cratered through the week in the largest monthly sell-off since COVID, settling Friday at $87.76 as the market priced in a meaningful probability of a U.S.-Iran ceasefire extension and a Strait of Hormuz reopening — well ahead of any signed agreement. Physical conditions stayed tight: commercial Hormuz traffic remained heavily restricted, U.S. commercial and Cushing stocks drew sharply, distillate inventories hit a 23-year low, and the SPR posted its second-largest draw on record. Henry Hub bucked the crude weakness, rallying to ~$3.30 on a hot June outlook even as storage built. WCSB differentials weakened broadly as the expected June-roll tightening failed to materialize.
1. Crude Oil — WTI
Price Action
WTI traded sharply lower through the week in what has developed into the largest monthly sell-off since COVID. The prompt opened May 1 at $101.94 USD/bbl, fell to a monthly low of $87.11 on Thursday, and ultimately settled Friday at $87.76 USD/bbl. Critically, the selloff was driven almost entirely by sentiment rather than any confirmed improvement in physical conditions: growing optimism around a potential U.S.-Iran ceasefire extension and a framework to reopen the Strait of Hormuz prompted a sharp repricing of geopolitical risk.
The physical reality remained tight. Commercial shipping through the Strait stayed heavily restricted throughout the week, active military exchanges continued — including U.S. strikes on Iranian vessels and missile sites, Iranian counterattack claims, and a tanker attack off Oman — and no final agreement was signed. The market appears to have priced in a meaningful probability of a Hormuz reopening well ahead of any resolution, leaving crude exposed to significant upside risk if the deal is delayed, narrowed, or rejected.
The proposed agreement remains highly uncertain — particularly around sequencing, unrestricted vessel transit, Iran's role in managing Hormuz traffic, and whether service fees or an inspection regime would apply once the blockade is lifted. President Trump's stated terms continued to focus on no nuclear weapons, an open Strait, the handling of highly enriched material, and no exchange of money, while Iranian reporting pushed back on several points and emphasized that the Strait would reopen under Iran's own predetermined arrangements. Iran also continued to point to the immediate release of $12 billion in frozen funds as a condition of moving forward, with nuclear issues deferred to later negotiations. Timespreads weakened materially, with major crude benchmarks reportedly shedding roughly half of their prompt backwardation through the week — even as physical fundamentals remained tight.
The Macro Backdrop: Physical Data Leans Bullish
Outside the current geopolitical environment, U.S. inventory data has continued to lean bullish. Major tracked hubs again posted significant declines, with commercial crude stocks down 3.3 MMBbls and Cushing down nearly 2.8 MMBbls. Importantly, Kpler has indicated that Cushing is beginning to approach "operationally low" levels of roughly 20 MMBbls. Four physical-flow data points define the balance:
Refined product stocks also moved lower, with distillate inventories reaching their lowest in 23 years. This tightness has been supported by high refinery utilization and strong export demand, with U.S. Gulf Coast crude exports topping 5 MMbbl/d for the sixth straight week. Despite continued demand strength, it is unclear whether U.S. producers can quickly boost production in tandem — the backlog of drilled-but-uncompleted wells (DUCs) currently sits at its lowest level on record.
Further, the U.S. SPR sits at its lowest level since July 2024, this week posting a 9.1 MMBbl drawdown — the second largest on record. The reserve has fallen by about 50 MMBbls since the start of the Iran war as emergency releases help replace crude trapped by the effective shutdown of the Strait. Around half of the April and May SPR releases have reportedly been exported, reinforcing the U.S. role as supplier of last resort while raising future restocking demand once the crisis eases. Given this environment, it is unclear how much longer the U.S. can function as a relief valve for global markets as 13-15 MMbpd of Gulf production remains offline.
Rolling 3-Month Price Detail
| Month | FX | WTI CMA | WCS Diff | WCS Spot | C5 Diff | MSW Diff |
|---|---|---|---|---|---|---|
| APR-26 | 1.3747 | 98.06 | -12.63 | — | -2.33 | -3.43 |
| MAY-26 | 1.3785 | 98.51 | -15.48 | -27.00 | +7.99 | +9.20 |
| JUN-26 | 1.3780 | 86.67 | -15.89 | -15.60 | +1.81 | +2.10 |
WTI CMA Bal-26 Strip Evolution
| Strip Date | 2026-07 | 2026-08 | 2026-09 | 2026-10 | 2026-11 | 2026-12 | Average |
|---|---|---|---|---|---|---|---|
| May 22 | 91.92 | 88.50 | 85.42 | 82.90 | 80.84 | 79.17 | 88.01 |
| May 26 | 89.33 | 86.18 | 83.47 | 81.28 | 79.50 | 78.06 | 86.26 |
| May 27 | 85.19 | 82.85 | 80.79 | 79.08 | 77.65 | 76.48 | 83.55 |
| May 28 | 86.10 | 84.07 | 82.20 | 80.58 | 79.17 | 77.97 | 84.61 |
| May 29 | 84.60 | 82.55 | 80.73 | 79.20 | 77.71 | 76.82 | 83.37 |
The Bal-26 average fell from $88.01 (May 22) to $83.37 (May 29) — a ~$4.64 collapse compressed into a single week, mirroring the prompt's slide. The curve held a backwardated shape (Jul above Dec across every strip date), but timespreads narrowed materially as the prompt shed roughly half its backwardation. CAL-style back-end levels in the high-$70s imply a "normalization scenario" once the geopolitical premium fades — consistent with U.S. shale break-evens and demand-growth assumptions.
2. Western Canadian Differentials
The Strip — Broad, Pronounced Weakness
We saw broad and pronounced weakness across May and June differentials this past week. Two weeks ago we anticipated that differentials would begin to tighten as the prompt CMA rolled from May into June, consistent with patterns observed in prior months. That assumption proved incorrect. Rather than seeing WTI prompt improve into the roll, we saw outright prices sell off and prompt backwardation widen, removing the near-term support we had expected.
As discussed above, the move lower in WTI was driven primarily by growing optimism around a potential U.S.-Iran agreement that could extend the current ceasefire and begin reopening the Strait of Hormuz. The market largely looked through renewed military exchanges and escalating events, instead pricing in a meaningful probability of a Hormuz reopening before any final agreement was signed. Key issues remain unresolved — including uranium enrichment, post-conflict management of the Strait, a Lebanon-Israel ceasefire, and the unlocking of Iranian assets. Benchmark and differential pricing remains exposed to renewed upside risk if the deal is delayed, narrowed, or rejected, or if we see greater military escalation. Futures markets continue to be driven by headlines and algorithmic/retail reactions, with participants responding more readily to downside news than to the unresolved risks on the other side.
Daily Spot Trajectory — May 2026
May condensates moved aggressively lower through the final days of trading. C5-PCE NAM traded as high as +$2.00/bbl early in the cycle but turned negative around May 20, weakening steadily to -$10.00/bbl by May 26 and settling around -$17.70/bbl on Friday. C5-FSPL followed a similar trajectory, holding its premium of $0.40-$0.60 USD/bbl to NAM and trading around -$17.30 USD/bbl on Friday. Moving to sweets, PCE and PEM both weakened materially through the week, softening to around -$13.70/bbl on Friday. Sours were illiquid with no trade activity. We did some price discovery on Saskatchewan sours late in the week and the bid-ask spread was severe — anyone holding length was hesitant to sell at a discount, as the market remains hopeful for a WTI rebound that would let them sell June length at a higher net price.
June condensates weakened materially as well, with C5-PCE NAM moving sharply lower on May 21 to around -$3.30/bbl and further to -$4.80/bbl on May 27. C5-FSPL followed a similar path, softening from mid-month levels near +$1.60/bbl to -$3.10/bbl on May 21 and closing near -$5.00/bbl into Friday. Sweets showed less severe but directionally similar activity: PCE weakened to -$2.50/bbl near the end of the week, and PEM tracked similarly, settling near -$2.50/bbl on May 28 after trading near flat through mid-month. No medium/light sours traded last week, but activity is expected to pick up in the first couple weeks of June.
WCS held in a relatively contained range and is actually trading stronger than index — Friday's last done moved at -$15.60 (index was around -$15.90). June SYN drifted lower through the recent period, trading ~$4.00 USD/bbl off index and moving at +$4.00/bbl on May 27.
Prompt-Month Dislocation: Forward vs. Spot
The standout structural feature remains the gap between the May-26 contract month settlements and the underlying spot market. Across sweet, synthetic and condensate grades, the calendar contract printed at sharp positive premiums while the equivalent spot grade printed deeply negative — a dislocation that compresses materially into June:
| May-26 | Forward Diff | Spot Diff | Gap |
|---|---|---|---|
| WCS | -15.48 | -27.00 | -11.52 |
| C5 | +7.99 | -17.00 | +24.99 |
| MSW | +9.20 | -15.25 | +24.45 |
3. Natural Gas — WCSB & U.S.
WCSB / AECO
The AECO daily weekend index gained ~$0.30 CAD/GJ and hit a monthly high to close out May, settling at ~$1.97/GJ. Prices gained upward momentum on the continued plummeting of field receipt volumes on NGTL and a heat wave across the Prairies, with record-breaking temperatures in Saskatchewan. Compared to last year, there is approximately 1-1.5 BCF/d of less receipts on NGTL. Planned turnarounds at gas plants on NGTL are estimated at ~0.8 BCF/d currently and expected to continue at that level until mid-June. NGTL then has pipeline maintenance scheduled June 16-20, which will likely lead to receipt-capacity restrictions.
Storage withdrawals occurred briefly last Tuesday — unusual at this time of year — driven by shut-in gas and receipt restrictions in the province. Willow Valley deliveries were consistent, averaging ~150 MMcf/d, while West Gate volumes remained volatile, oscillating between 1.8 and 2.3 BCF/d. Canada's summer outlook points to hotter and drier conditions across Western Canada, increasing drought and wildfire risk — especially in British Columbia and the Prairies. The shift from La Niña toward a potentially strong El Niño is driving the unstable pattern while also contributing to a less active Atlantic hurricane season.
AECO 7A Forward Curve Snapshot
| AECO 7A (CAD/GJ) | Price | Δ Week | Δ% |
|---|---|---|---|
| Q1-26 | 2.360 | 0.00 | 0.0% |
| Q2-26 | 1.429 | 0.00 | +0.1% |
| Q3-26 | 1.834 | +0.11 | +6.3% |
| Q4-26 | 2.411 | +0.10 | +4.4% |
| Gas Year 26 | 2.041 | +0.04 | +1.8% |
| Bal Gas Year 26 | 1.697 | +0.07 | +4.4% |
| Summer-26 | 1.690 | +0.06 | +3.7% |
| Winter-26/27 | 2.709 | +0.11 | +4.1% |
| CAL-27 | 2.350 | +0.06 | +2.7% |
| Gas Year 27 | 2.316 | +0.07 | +3.3% |
| Summer-27 | 2.035 | +0.05 | +2.5% |
| Winter-27/28 | 2.888 | +0.03 | +1.1% |
The 7A curve firmed across the board, with the strongest moves in Q3-26 (+6.3% to $1.834) and Winter-26/27 (+4.1% to $2.709) on warmer near-term weather forecasts that should lift Alberta power demand and on tightening field-receipt supply. The back-loaded winter shape remains intact — a structural feature reflecting Western Canadian storage-cycle dynamics and seasonal heating demand. Counter-seasonal storage withdrawals in the province underscore how tight the marginal supply backdrop has become.
NYMEX Henry Hub
Henry Hub prices rallied throughout the week, gaining ~$0.30 USD/MMBtu and settling at ~$3.30 USD/MMBtu. Similar to the prior week, NYMEX kept rising despite storage continuing to build at higher levels, as warm weather blanketed central and southern states. The prompt contract rolled to July on Thursday. According to EIA estimates, working gas in storage totaled 2,483 Bcf as of Friday, May 22 — a +92 Bcf increase from the prior week. Storage was 21 Bcf above year-ago levels and 144 Bcf above the five-year average of 2,339 Bcf, keeping overall inventories within the historical five-year range. Higher-than-normal temperatures are forecast in June for the majority of the U.S., helping push pricing higher.
The supply side firmed the bullish case: Lower-48 daily production fell to a 15-week low of 106.1 bcf/d, while LNG export demand ran roughly 3.0 bcf/d higher year-over-year over the trailing 30 days. U.S. LNG feedgas averaged about 17.4 bcf/d as maintenance kept one train offline at both Cameron and Freeport LNG; feedgas is expected to recover as Cameron's outage nears completion and Freeport follows, with Golden Pass intake returning to ~300 MMcf/d. Above-average storage injections may limit further gains unless heat persists or output falls more sharply.
Henry Hub Bal-26 Strip Evolution
| Strip Date | 2026-07 | 2026-08 | 2026-09 | 2026-10 | 2026-11 | 2026-12 | Average |
|---|---|---|---|---|---|---|---|
| May 22 | 2.91 | 3.02 | 3.05 | 3.01 | 3.07 | 3.32 | 3.19 |
| May 26 | 2.89 | 3.01 | 3.03 | 3.00 | 3.05 | 3.29 | 3.17 |
| May 27 | 3.04 | 3.10 | 3.12 | 3.08 | 3.12 | 3.34 | 3.25 |
| May 28 | 3.04 | 3.29 | 3.31 | 3.27 | 3.31 | 3.50 | 3.40 |
| May 29 | 3.04 | 3.29 | 3.32 | 3.28 | 3.33 | 3.54 | 3.42 |
4. Weather Outlook
Canadian outlook. Canada's summer outlook points to hotter and drier conditions across Western Canada, raising drought and wildfire risk — especially in British Columbia and the Prairies. The Weather Network expects Western Canada to run warmer and drier than normal, with elevated risk across parts of B.C., Alberta, western Saskatchewan, the Yukon, and western Northwest Territories. A developing El Niño pattern could limit early-summer rainfall across parts of the Prairies, while Central and Eastern Canada are expected to see more variable heat with more frequent showers and thunderstorms.
U.S. outlook. NOAA's 6-10 day outlook (valid June 4-8, issued May 29) shows above-normal temperatures dominating across the central and eastern U.S., with the highest probability tier shaded over the upper Midwest and Great Lakes. The Pacific Northwest and parts of the Southwest lean near-to-below normal. Higher-than-normal June temperatures across the majority of the country argue for ramping power-sector cooling demand — direct support for Henry Hub as the prompt rolls to July.
5. This Week's Storylines
SPR draws accelerate — reserve down ~50 MMBbls since start of Iran war
The U.S. Strategic Petroleum Reserve has fallen by about 50 MMBbls since the start of the Iran war as emergency releases help replace crude trapped by the effective shutdown of the Strait of Hormuz. This week's 9.1 MMBbl drawdown was the second largest on record. Around half of the April and May SPR releases have reportedly been exported, reinforcing the role of the U.S. as a supplier of last resort while raising future restocking demand once the crisis eases.
Distillate stocks tighten to lowest level since May 2003
U.S. distillate inventories fell to their lowest level since May 2003 as the Iran war continued to pressure global fuel supplies and lift demand for U.S. petroleum products. Product exports increased from the prior week, while refinery utilization rose as U.S. refiners worked to meet stronger demand tied to the ongoing disruption through the Strait of Hormuz.
Shale backlog limits growth — DUC inventory at record low
U.S. shale producers are facing a record-low inventory of drilled-but-uncompleted wells, limiting their ability to quickly raise output as exports and refinery runs draw down domestic crude inventories. While higher forward prices are encouraging some operators to add rigs and rebuild backlog, the low DUC count means near-term production growth may be slower than usual despite strong demand for U.S. barrels.
Strikes complicate deal — fresh U.S. strikes on southern Iran
Fresh U.S. strikes on missile sites and boats in southern Iran complicated market expectations for a potential U.S.-Iran framework agreement and renewed uncertainty around the Strait of Hormuz. Oil prices moved higher after the strikes, reversing some of the prior day's decline, as traders weighed diplomatic progress against the risk that prolonged Strait restrictions could deepen the global energy supply crunch.
White House denies draft — calls Iranian memorandum a "fabrication"
The White House denied an Iranian state television report that a draft interim peace deal would allow Strait of Hormuz flows to return to normal within a month, calling the reported memorandum a fabrication. The conflicting reports pressured oil prices lower as traders focused on the possibility of a deal, but key issues remain unresolved — including Iran's proposed role in managing, inspecting, and charging fees for vessels moving through the Strait.
Hormuz traffic remains stalled
Commercial shipping through the Strait of Hormuz slowed again Wednesday, with only a few mostly Iran-linked vessels observed crossing after a brief increase in energy-related outflows the prior day. The stop-start traffic highlights continued uncertainty around U.S.-Iran negotiations, while AIS signal interference and vessels going dark make it difficult to verify real-time flows through the chokepoint.
Keystone XL revival — South Bow secures 20-year commitments for Prairie Connector
South Bow has secured 20-year shipper commitments for its proposed Prairie Connector pipeline, a partial revival of the cancelled Keystone XL route that would carry 550,000 bpd from Alberta to Wyoming. A final investment decision is targeted for mid-2027, though the project's future hinges on confidence that the current U.S. cross-border permit would survive a change in administration.
Lower output lifts gas — production falls to 15-week low
U.S. natural gas prices moved higher as Lower-48 production declined, LNG feedgas flows recovered from spring maintenance, and early cooling demand strengthened across the East and Southeast. Daily production fell to a 15-week low of 106.1 bcf/d, while LNG export demand ran roughly 3.0 bcf/d higher year-over-year over the past 30 days — though above-average storage injections may limit further gains unless heat persists or output falls more sharply.
Maintenance holds feedgas lower — Cameron & Freeport trains offline
U.S. LNG feedgas averaged about 17.4 bcf/d as maintenance kept one train offline at both Cameron and Freeport LNG, holding flows below recent peak levels. Feedgas demand is expected to recover as Cameron's outage nears completion and Freeport likely follows the week after, while Golden Pass intake has returned to around 300 MMcf/d following commissioning-related maintenance.
Ksi Lisims eyes Europe — talks with SEFE and other utilities
Canada's proposed Ksi Lisims LNG export facility is in talks with several European utilities, including Germany's SEFE, as it looks to secure enough contracted capacity to support a final investment decision. The facility has allotted 5 million tonnes per year of its planned 12 mtpa capacity and is targeting another 3-4 million tonnes of offtake before moving forward, with European interest rising as the wars in Iran and Ukraine reshape LNG supply priorities. The project still faces financing, pipeline, Indigenous, and environmental challenges.
Western Canada faces fire risk this summer
The Weather Network expects Western Canada to be warmer and drier than normal this summer, raising the risk of drought and wildfires across parts of British Columbia, Alberta, western Saskatchewan, the Yukon, and western Northwest Territories. A developing El Niño pattern could limit early-summer rainfall across parts of the Prairies, while Central and Eastern Canada are expected to see more variable heat and more frequent showers and thunderstorms. Wildfire risk remains a concern for both natural gas and oil producing regions.
6. How the Markets Moved — Regional Recap
The Week in Western Canada
Canadian crude markets saw broad and pronounced weakness across May and June differentials. The expected June-roll tightening reversed: rather than WTI prompt improving into the roll, outright prices sold off and prompt backwardation widened, removing the near-term support we had flagged. WCS, however, held a contained range and traded stronger than index — Friday's last done at -$15.60 vs. an index near -$15.90.
Condensates led the collapse. C5-PCE NAM ran as high as +$2.00/bbl early in the cycle, turned negative around May 20, and settled around -$17.70/bbl on Friday; C5-FSPL tracked just above. June condensate also weakened sharply (C5-PCE NAM -$4.80 on May 27). Sweets followed, with PCE and PEM softening to ~-$13.70/bbl and June PCE/PEM near -$2.50/bbl. Sours were illiquid with no trades — holders of length reluctant to sell at a discount in hope of a WTI rebound.
The May forward-vs-spot dislocation persisted (C5 forward +7.99 vs. spot -17.00; MSW +9.20 vs. -15.25) before June resets dramatically tighter — a prompt-specific squeeze, not a structural break. The Scotford Upgrader is largely back online, lifting light supply and trimming diluent demand, while diesel/gasoline cracks stay supportive of light and medium product demand.
Natural gas was the bright spot. The AECO daily index gained ~$0.30/GJ to a monthly-high ~$1.97/GJ on plummeting NGTL field receipts (~1-1.5 BCF/d below last year) and a Prairie heat wave with record Saskatchewan temperatures. The 7A strip firmed across the board (Q3-26 +6.3% to $1.834; Winter-26/27 +4.1% to $2.709). Counter-seasonal storage withdrawals underscored the tight supply backdrop; pipeline maintenance Jun 16-20 looms.
The Week in the Lower 48
The U.S. crude complex traded one dominant theme: the direction of U.S.-Iran negotiations versus stubbornly tight physical fundamentals. WTI fell from a $101.94 May open to an $87.11 Thursday low before settling Friday at $87.76 — the largest monthly sell-off since COVID — as the market priced a meaningful probability of a Hormuz reopening ahead of any signed deal. Timespreads shed roughly half their prompt backwardation even though physical conditions stayed tight.
Inventory data leaned decisively bullish: commercial crude -3.3 MMBbls, Cushing -2.8 MMBbls toward "operationally low" ~20 MMBbls, distillate at a 23-year low, and a record-low DUC backlog limiting any quick production response. The SPR drew 9.1 MMBbls (second-largest on record; ~50 MMBbls since the war began), and USGC exports topped 5 MMbbl/d for the sixth straight week — underscoring how dependent the global balance has become on emergency barrels as 13-15 MMbpd of Gulf production stays offline.
Henry Hub bucked the crude weakness, rallying ~$0.30 to ~$3.30/MMBtu as warm weather blanketed central and southern states and the prompt rolled to July. The move came despite a +92 Bcf storage build to 2,483 Bcf (+21 Bcf YoY, +144 Bcf above the 5-yr average). Supply firmed the bull case: L48 production fell to a 15-week low of 106.1 bcf/d while LNG feedgas held ~17.4 bcf/d with Cameron/Freeport trains in maintenance.
NOAA's 6-10 day outlook (valid Jun 4-8) turned above-normal across the central and eastern U.S., with higher-than-normal June temperatures forecast nationwide — direct support for cooling demand and Henry Hub. Above-average injections remain the cap on further gains unless heat persists or output falls more sharply.
7. References & Sources
- Contango Commodity Marketing — Internal — Settlement data, WTI CMA & Henry Hub Bal-26 strips, AECO 7A strip, rolling 3-month price detail, sweet & condensate sell-off series, spot vs. forward monthly settlements (May 29, 2026 close); Weekly Commentary & Pricing report (M. Mason)
- NYMEX / CME Group — WTI and Henry Hub futures settlements, week of May 25-29, 2026; prompt roll to July
- U.S. Energy Information Administration (EIA) — Weekly Natural Gas Storage Report, week ending May 22, 2026 (2,483 Bcf, +92 Bcf); Weekly Petroleum Status Report (commercial crude, Cushing, gasoline, distillate, SPR)
- NOAA Climate Prediction Center — 6-10 Day Temperature Outlook, valid June 4-8, issued May 29, 2026. cpc.ncep.noaa.gov
- The Weather Network — Canadian Summer 2026 Forecast
- Government of Canada — Canadian Wildland Fire Information System fire-danger map (May 25, 2026)
- Bloomberg — Daily Hormuz shipping traffic; Lower-48 dry gas production, LNG feedgas, gasoline/diesel crack spreads
- Kpler — Cushing hub levels approaching "operationally low"; Iranian tanker / floating-storage tracking (Persian Gulf / Strait of Hormuz)
- RBN Energy — Weekly USGC crude export volumes (Corpus Christi, Houston, Beaumont, Louisiana)
- Commodity Context — Gasoline and diesel crack spreads (NY Harbor gasoline / diesel vs. prompt Brent)
- Dispatcho — Scotford upgrader / refinery proxy capacity factor
- NGTL System — Current System Report: field receipts, linepack, deliveries; planned turnarounds and June 16-20 pipeline maintenance
- South Bow — Prairie Connector (partial Keystone XL revival) 20-year shipper commitments; mid-2027 FID target
- Ksi Lisims LNG / Western LNG / Rockies LNG — European offtake discussions (incl. Germany's SEFE)
- Reuters / news wires — Strait of Hormuz developments, U.S. strikes, White House denial of draft memorandum, Iran frozen-funds condition, European gas price reaction