ZTS

Dark pool — off-exchange short volume

GEX Back to dark pool

Short ratio (latest)

26.4%

20-day average

29.7%

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

92.21

0.49B

90.60

0.61B

88.98

0.98B

87.36

1.14B

85.74

1.34B

84.13

0.74B

82.51

0.95B

80.89

1.70B

79.27

2.11B

77.65

1.81B

76.04

1.21B

74.42

0.59B

72.80

0.08B

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.