MAS
Dark pool — off-exchange short volume
Short ratio (latest)
66.7%
20-day average
67.8%
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
80.73
0.40B
79.32
0.68B
77.90
0.89B
76.49
1.06B
75.07
2.11B
73.65
2.05B
72.24
1.94B
70.82
2.11B
69.40
2.39B
67.99
2.10B
66.57
2.14B
65.15
2.35B
63.74
2.74B
62.32
2.41B
60.91
2.00B
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.