UNH

Dark pool — off-exchange short volume

GEX Back to dark pool

Short ratio (latest)

31.8%

20-day average

34.9%

Off-exchange share (20d)

35%

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

461.96

47.5B

453.86

39.7B

445.75

22.8B

437.65

22.2B

429.54

15.0B

421.44

11.2B

413.33

9.31B

405.23

7.17B

397.13

9.91B

389.02

14.8B

380.92

20.6B

372.81

15.9B

364.71

17.2B

356.60

22.2B

348.50

20.6B

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.