The volume-weighted average price of the session so far — built to judge execution quality, not to promise a bounce. It resets every session — it is never a multi-day line.
Institutional trading desks needed a way to judge whether a large order was filled at a fair price relative to the day's actual volume flow.
Whole families of execution algorithms were built specifically to slice large orders across the day and land close to VWAP.
As intraday charting software spread, VWAP became a default overlay for retail day traders, far from its execution-benchmark origins.
Serious use today reads it as the session's fair-value line, needing trend and volume context — not a promise of any bounce.
VWAP runs a volume-weighted average of every trade since the session opened — heavier volume at a price pulls the line toward it more than light volume does.
A touch of VWAP simply means price has returned to the session's fair-value average — whether it bounces depends entirely on the prevailing trend and the volume showing up at that touch.
VWAP restarts at the open of every session — treating it like a multi-day support or resistance level misunderstands what it actually measures.
On a session with no strong directional conviction, price repeatedly returned to and bounced from VWAP — exactly the balanced, mean-reverting condition where that behavior is common.
During that sharp risk-off session, price broke below VWAP early and never reclaimed it — a genuinely one-sided session where the "automatic bounce" idea simply failed.
Price is in a genuinely strong, one-sided downtrend all session. It dips to VWAP once. A trader buys immediately, assuming an automatic bounce. Sound?
A trader draws yesterday's closing VWAP level forward onto today's chart, treating it as a support line today. Reasonable?
A single huge-volume trade happens right at the open, then the rest of the session trades quietly at a different price. What happens to VWAP?
Price against VWAP, watched tick by tick on the left — and the mark it leaves in the ledger on the right. A genuine balanced bounce, a mirrored breakdown reclaim — and a strong session that never looked back.
Price touches VWAP. Judge whether real volume is stepping in at that touch — then call it: a genuine bounce, or a slice-through.
The classic error is treating VWAP as a magnet that price must obey. The discipline is mechanical: read the session's overall character first, then require genuine volume confirmation before trusting any touch as a bounce.
VWAP was built by trading desks to answer a narrow question: was this fill fair? Read it for what it is — a session's fair-value line, resetting fresh every day — and never mistake it for a promise.
Price is what you pay. Value is what you get.