ATO

Dark pool — off-exchange short volume

GEX Back to dark pool

Short ratio (latest)

49.9%

20-day average

31.2%

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

192.26

0.03B

188.89

0.37B

185.51

1.26B

182.14

1.00B

178.77

0.95B

175.40

1.40B

172.02

1.58B

168.65

2.30B

165.28

2.32B

161.90

1.53B

158.53

0.49B

155.16

1.05B

151.78

1.62B

148.41

1.17B

145.04

0.99B

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.