DXCM
Dark pool — off-exchange short volume
Short ratio (latest)
60.2%
20-day average
48.9%
Off-exchange share (20d)
33%
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
85.53
3.91B
84.03
3.52B
82.53
2.59B
81.03
2.94B
79.53
2.90B
78.03
2.89B
76.53
2.81B
75.03
2.96B
73.53
4.12B
72.03
4.49B
70.53
5.92B
69.03
6.16B
67.53
6.00B
66.03
4.69B
64.53
2.25B
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.