FAST

Dark pool — off-exchange short volume

GEX Back to dark pool

Short ratio (latest)

66.0%

20-day average

52.1%

Off-exchange share (20d)

28%

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

49.79

0.24B

48.87

0.89B

47.95

1.34B

47.03

2.79B

46.10

3.12B

45.18

3.42B

44.26

2.49B

43.34

1.83B

42.42

1.41B

41.49

2.81B

40.57

3.11B

39.65

2.27B

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.