Oil can sit in a tight 40 cent range for two hours and then move $1.50 in the four minutes after the weekly inventory report crosses the wire. Few instruments swing as hard on a single scheduled number, and few reward a trader's patience, or punish their impatience, as clearly as WTI and Brent crude do every Wednesday at 10:30 ET.
Trading oil well means understanding two things most traders underestimate: how much of its movement is genuinely scheduled, and how differently WTI and Brent behave despite tracking the same commodity.
WTI and Brent are not the same trade
WTI, West Texas Intermediate, is the US benchmark and the more actively traded of the two among intraday accounts, with tighter spreads and deeper liquidity through the New York session. Brent is the international benchmark, priced off North Sea supply and more directly sensitive to global shipping routes, OPEC+ decisions and Middle East headlines. The two normally trade within a few dollars of each other, the WTI to Brent spread, but that gap can widen sharply around a genuine supply shock in one region without the other. A trader watching only WTI can miss a Brent-specific headline that pulls WTI along with it an hour later.
The inventory report: a scheduled event
The US Energy Information Administration releases weekly crude inventory data most Wednesdays at 10:30 ET, Thursdays if Monday was a holiday, and the number regularly produces the sharpest few minutes of oil's entire week. A build well above expectations tends to pressure price hard and fast; a larger than expected draw does the opposite. The first 60 seconds after release is close to a coin flip on direction and fill quality, since spreads widen and slippage runs well beyond normal. The tradeable part is not the first spike, it is the follow-through in the ten or fifteen minutes after, once the initial imbalance clears and a real direction, or a clean fade of the spike, emerges.
OPEC+ headlines and the other event risk
Beyond the weekly number, oil reacts hard to OPEC+ meeting outcomes and even informal comments from oil ministers, since production quotas directly set supply. These headlines do not arrive on a fixed clock the way inventory data does, which makes them harder to prepare for but not impossible: OPEC+ meeting dates are public well in advance, and a trader who knows one is scheduled that week can reduce size or stand aside around the announcement window rather than being caught by a headline mid-position.
Session rhythm and realistic ranges
Oil trades most actively during the New York session, roughly 9:00 to 14:30 ET, with a secondary pickup around the European morning when refinery and demand chatter tends to surface. A typical day sees WTI move $1.00 to $2.00 from low to high; a day with a major headline or a surprising inventory print can double that. On a $10,000 account, with WTI worth $1,000 per dollar of movement per standard contract, a $0.50 stop already risks $500, half the account, at full size, which is exactly why oil demands smaller position sizes than its price action might first suggest to a trader used to forex.