IBKR· Interactive Brokers
Dark pool · off-exchange short volume
Short ratio (latest)
55.9%
20-day average
49.9%
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
98.68
0.04B
96.85
0.84B
95.02
1.35B
93.20
1.88B
91.37
2.05B
89.54
1.98B
87.72
1.72B
85.89
1.47B
84.06
1.39B
82.23
0.84B
80.41
0.68B
78.58
0.85B
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.