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COST Gap and Gap Fill

Updated Nov 6, 2026, 4:07 AM ET · Gap = today's open vs the prior close
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On Nov 5 COST opened at $1071.00, a gap up of $24.53 (2.3%) from the prior close of $1046.47. The gap was not filled: the fill level is $1046.47.
Best for: intradayHold: same dayPrice $1058.18 · 15-min delayed
Gap+2.3%
Fill level1046.47
Filled?No
Avg gap (10 days)1.0%

COST daily chart: gap fill level

90095010001050Sep 25Oct 2Oct 9Oct 16Oct 23Oct 301046.47Gap fill (prior close) 1046.471071.00Open 1071.001065.59
- - - gap fill level (prior close)- - - open

Where COST sits in its zone

The delayed price $1058.18 is above its daily zone ($945.45 – $998.82), 2.97 ATR over the top.

945.45 · bottom 25%middletop 25% · 998.82
  • Setups to watch: the zone broke to the upside. Watch for a retest of the zone top or a false breakout back inside.
  • Prior move: COST moved up from $30.70 (the last daily swing) to $1058.18, about 51.3 ATR, so the move is extended. Traders often watch the reversal first here.
  • Reversal check: a shooting star or bearish engulfing candle near $998.82.
  • Breakout check: RVOL above normal on the break (last day's RVOL: 2.2× on Nov 5).
  • Zone tests: price pushed above the zone top 0 times and fell back, and dipped below the bottom and recovered 0 times. Each test can weaken a zone.

Why gap matters

A gap shows news or orders that came in while the market was closed. Many traders watch whether price comes back to the prior close to "fill" the gap, or keeps running away from it.

How traders use it

  • Gap and go: a gap that holds above the premarket high (or below the low) often keeps running.
  • Gap fill: a gap that fades back toward the prior close; the fill level is the target traders watch.
  • Big gaps on news fill less often than small gaps on no news.

What happened over the last 10 days

  • Of the 8 gaps bigger than 0.3%, 0 filled the same day.
  • The average gap was 1.0%.
  • Round numbers nearby: $1000.00, $1050.00, $1100.00.

Combined conditions

  • VWAP $1068.75 is above the fill level.
  • The delayed price is above the daily zone: watch for a retest or a false breakout.
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How to trade around COST's gap levels

1. Gap fill tradeIf COST moves back toward $1046.47, that fill level is the first target traders watch; a reversal before it keeps the gap open.
2. Gap and goA gap that holds its first pullback and breaks the premarket high with RVOL is read as continuation.

For more setups and trading strategies, click here →

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COST gaps: last 10 days

DatePrior closeOpenGapFilled?
Nov 51046.471071.00+2.3%No
Nov 41019.261036.83+1.7%No
Nov 31040.551031.57−0.9%No
Nov 21012.281017.01+0.5%No
Oct 30996.081013.90+1.8%No
Oct 29982.73995.14+1.3%No
Oct 28992.13983.61−0.9%No
Oct 271005.161001.57−0.4%No
Oct 261003.321000.96−0.2%Yes
Oct 231018.211016.90−0.1%Yes

FAQ

Did COST gap up or down today?

On Nov 5 it gapped up 2.3% ($1046.47 → $1071.00).

On SEPT: see every gap drawn on your chart with its fill level. Try it free →
Did COST fill its gap?

No, it did not trade back to the prior close of $1046.47.

On SEPT: get an alert when COST fills its gap. Try it free →
What is a gap fill?

When price moves back to the prior close after opening with a gap up or down.

On SEPT: screen for stocks filling their gap right now. Try it free →
How often does COST fill its gaps?

In the last 10 days, 0 of 8 gaps bigger than 0.3% filled the same day.

On SEPT: test gap-fill odds on years of real data. Try it free →
Do all gaps get filled?

No. Many small gaps fill, but big gaps on news can run for days without filling.

On SEPT: ask GOAX what is behind today's gap. Try it free →
What is gap and go?

A gap that keeps running in its direction after the open instead of filling.

On SEPT: build a gap-and-go alert with your own confirmation and entry conditions. Try it free →
Where is COST in its zone now?

Above its daily zone ($945.45 – $998.82), based on the delayed price.

On SEPT: see COST's zone position live and let GOAX alert you at the zone edge. Try it free →

Data: SEPT market data engine. Delayed data; real-time levels are on the SEPT platform. Times in Eastern Time. Educational information only, not investment advice. No odds or win rates are shown on this page.