BDX

Dark pool — off-exchange short volume

GEX Back to dark pool

Short ratio (latest)

65.6%

20-day average

50.9%

Off-exchange share (20d)

43%

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

170.08

14.7B

167.10

9.73B

164.11

6.54B

161.13

6.93B

158.15

5.75B

155.16

6.13B

152.18

4.67B

149.20

4.80B

146.21

4.77B

143.23

3.82B

140.24

1.71B

137.26

2.92B

134.28

3.51B

131.29

3.50B

128.31

1.93B

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.