BLK

Dark pool — off-exchange short volume

GEX Back to dark pool

Short ratio (latest)

47.5%

20-day average

40.3%

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

1150.02

2.98B

1129.84

4.51B

1109.67

6.86B

1089.49

7.55B

1069.32

11.6B

1049.14

11.7B

1028.97

6.96B

1008.79

7.89B

988.61

9.31B

968.44

9.46B

948.26

11.8B

928.09

8.59B

907.91

4.34B

887.74

3.21B

867.56

2.12B

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.