MMM
Dark pool — off-exchange short volume
Short ratio (latest)
55.3%
20-day average
41.0%
Off-exchange share (20d)
35%
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
176.70
0.03B
173.55
0.45B
170.39
2.04B
167.24
3.68B
164.08
3.84B
160.93
3.48B
157.77
3.45B
154.61
6.90B
151.46
9.79B
148.30
9.66B
145.15
10.9B
141.99
7.99B
138.84
5.02B
135.68
5.72B
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.