Unusual open interest accumulation
Where was the daily increase in open interest at least two standard deviations above its prior-year norm on Sep 16, 2026?
Today's contract change minus the mean of up to 252 preceding daily changes, divided by their sample standard deviation. Today is excluded from the baseline; at least 200 prior changes and 100,000 current contracts are required. Data through close. Descriptive only, not a recommendation.
| # | Ticker | Close | Open interest | 1-day OI change / z-score |
|---|---|---|---|---|
| 1 | GFL | 41.07 | 117,192 | +21,707 · +4.48σ |
| 2 | ARDX | 3.39 | 181,069 | +11,772 · +2.27σ |
| 3 | HRL | 20.79 | 110,722 | +9,366 · +2.12σ |
| 4 | UAL | 106.30 | 410,615 | +71,575 · +2.10σ |
Screens describe what the data shows after the close. They are not trade recommendations; see the disclaimer and the methodology.