PTC

Dark pool — off-exchange short volume

GEX Back to dark pool

Short ratio (latest)

46.1%

20-day average

48.1%

Off-exchange share (20d)

34%

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

154.25

1.55B

151.55

1.02B

148.84

0.80B

146.13

1.57B

143.43

2.53B

140.72

2.27B

138.02

1.79B

135.31

1.71B

132.60

1.37B

129.90

1.48B

127.19

1.46B

124.49

1.58B

121.78

1.33B

119.07

1.26B

116.37

1.15B

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.