MMM· 3M

Dark pool · off-exchange short volume

Dark pool as of 2026-11-04 · latest session 2026-11-05

MMM's off-exchange short-volume ratio was 51.0% on 4 Nov 2026, below its 20-day average of 53.5%. Off-exchange trading was 35% of volume over the last 20 sessions. 7 sessions in the last six months had unusually large off-exchange dollar volume, the latest on 22 Oct 2026.

Short ratio (latest)

51.0%

20-day average

53.5%

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

184.13

0.74B

180.59

2.38B

177.05

1.98B

173.51

2.82B

169.97

5.38B

166.43

6.39B

162.89

8.16B

159.35

5.96B

155.80

6.61B

152.26

10.4B

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.