MCK

Dark pool — off-exchange short volume

GEX Back to dark pool

Short ratio (latest)

43.3%

20-day average

41.7%

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

899.46

0.51B

883.68

1.47B

867.90

2.97B

852.12

3.96B

836.34

4.30B

820.56

5.75B

804.78

3.64B

789.00

1.57B

773.22

2.19B

757.44

4.80B

741.66

3.36B

725.88

4.57B

710.10

8.89B

694.32

6.19B

678.54

5.58B

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.