CBOE· Cboe Global Markets

Dark pool · off-exchange short volume

as of 2026-11-05

CBOE's off-exchange short-volume ratio was 67.0% on 5 Nov 2026, above its 20-day average of 49.3%. Off-exchange trading was 42% of volume over the last 20 sessions. 12 sessions in the last six months had unusually large off-exchange dollar volume, the latest on 30 Oct 2026.

Short ratio (latest)

67.0%

20-day average

49.3%

Off-exchange share (20d)

42%

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

372.83

0.02B

365.92

0.39B

359.02

0.47B

352.11

0.49B

345.21

0.85B

338.31

1.22B

331.40

0.68B

324.50

0.61B

317.59

0.56B

310.69

1.06B

303.78

2.75B

296.88

3.32B

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.