ULTA
Dark pool — off-exchange short volume
Short ratio (latest)
60.8%
20-day average
61.0%
Off-exchange share (20d)
38%
Darkpool density
big day, short ratio above trendbelow trendbubble size = how unusual ($vol z-score)
Last ~6 months. Bubbles mark days of unusually large off-exchange dollar volume (≥1.5σ vs the trailing 60 days). Daily resolution — not print-level data.
Darkpool levels ±15% of spot, since 2018-10-01
536.75
4.61B
527.34
7.69B
517.92
7.52B
508.50
4.83B
499.09
3.17B
489.67
3.38B
480.25
4.62B
470.83
5.48B
461.42
3.68B
452.00
3.94B
442.58
3.43B
433.17
3.26B
423.75
6.32B
414.33
9.28B
404.92
9.13B
Historical off-exchange $ volume at price: each day's volume spread across that day's range, summed over the full FINRA history. Heavy shelves often act as support/resistance magnets. Amber row = spot's bin.
Off-exchange short-volume ratio
short ratio (20d, right) daily off-exchange share (left)
FINRA daily TRF data, last 2 years. A persistently HIGH short ratio is mostly passive market-maker liquidity provision (commonly read as accumulation pressure) — not naively bearish.