NDAQ· Nasdaq, Inc.
Dark pool · off-exchange short volume
Short ratio (latest)
46.2%
20-day average
34.5%
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
100.31
0.54B
98.49
2.13B
96.66
1.76B
94.84
3.10B
93.01
3.39B
91.19
2.60B
89.37
3.96B
87.54
6.19B
85.72
4.27B
83.89
2.55B
82.07
2.20B
80.25
3.56B
78.42
3.01B
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.