SNA

Dark pool — off-exchange short volume

GEX Back to dark pool

Short ratio (latest)

61.5%

20-day average

68.0%

Off-exchange share (20d)

32%

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

395.31

0.02B

387.71

0.27B

380.11

1.34B

372.51

0.93B

364.91

1.30B

357.30

0.90B

349.70

0.68B

342.10

1.51B

334.50

1.69B

326.89

2.24B

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.