After seven straight weeks of significant inventory builds, API reported a modest 482k draw. That was all the algos needed and WTI immediately ramped back above $41.00. However, what they likely missed was the 2nd weekly (huge) build in Cushing (1.5mm barrels) as we warned earlier on land storage starting to really fill... [3]
Cushing saw another big build...
And crude reacted...

In short: "The US is the last place with significant onshore crude storage space left."
Which leads directly to Citi's conclusion: "'Sell the rally' near-term as fundamentals remain very sloppy and inventory constraints are becoming increasingly more binding."
Charts: Bloomberg

