CTAS

Dark pool — off-exchange short volume

GEX Back to dark pool

Short ratio (latest)

36.5%

20-day average

52.2%

Off-exchange share (20d)

37%

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

205.36

4.13B

201.76

6.02B

198.16

4.42B

194.55

3.51B

190.95

4.11B

187.35

4.31B

183.74

4.35B

180.14

2.29B

176.54

1.56B

172.94

2.68B

169.33

2.04B

165.73

1.19B

162.13

0.38B

158.52

0.03B

154.92

0.22B

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.