STX

Dark pool — off-exchange short volume

GEX Back to dark pool

Short ratio (latest)

36.1%

20-day average

35.3%

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

926.42

1.49B

910.17

1.15B

893.92

2.35B

877.66

2.33B

861.41

1.78B

845.16

1.64B

828.90

2.78B

812.65

3.31B

796.40

3.62B

780.14

4.30B

763.89

4.18B

747.64

3.32B

731.39

2.16B

715.13

1.36B

698.88

1.33B

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.