UDR
Dark pool — off-exchange short volume
Short ratio (latest)
43.7%
20-day average
55.9%
Off-exchange share (20d)
30%
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
45.02
0.36B
44.23
0.36B
43.44
0.40B
42.65
0.61B
41.86
0.95B
41.07
1.29B
40.28
1.25B
39.49
1.83B
38.70
2.28B
37.91
2.50B
37.12
3.77B
36.33
2.91B
35.54
2.80B
34.75
2.74B
33.96
2.78B
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.