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Market/Dark Pool/BLK

BLK· BlackRock

Dark pool · off-exchange short volume
as of 2026-11-05

BLK's off-exchange short-volume ratio was 44.9% on 5 Nov 2026, below its 20-day average of 50.7%. Off-exchange trading was 40% of volume over the last 20 sessions. 13 sessions in the last six months had unusually large off-exchange dollar volume, the latest on 4 Nov 2026.

Short ratio (latest)
44.9%
20-day average
50.7%
Off-exchange share (20d)
40%

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

1224.37
0.19B
1199.88
0.48B
1175.40
3.04B
1150.91
6.51B
1126.42
9.82B
1101.93
11.4B
1077.45
17.1B
1052.96
19.1B

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.