CBOE· Cboe Global Markets
Dark pool · off-exchange short volume
Short ratio (latest)
27.3%
20-day average
43.3%
Off-exchange share (20d)
39%
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
320.39
0.16B
314.76
0.28B
309.14
0.65B
303.52
1.87B
297.90
2.49B
292.28
2.33B
286.66
2.22B
281.04
2.12B
275.42
1.65B
269.80
1.27B
264.18
1.13B
258.56
1.61B
252.94
2.59B
247.32
2.87B
241.69
2.16B
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.