MCK· McKesson Corporation
Dark pool · off-exchange short volume
Short ratio (latest)
76.9%
20-day average
57.2%
Off-exchange share (20d)
29%
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
1004.92
0.01B
987.29
0.61B
969.66
0.72B
952.03
2.08B
934.40
2.83B
916.77
1.95B
899.14
2.49B
881.51
4.54B
863.88
5.98B
846.25
5.96B
828.62
7.06B
810.99
6.58B
793.36
3.10B
775.73
4.40B
758.10
6.84B
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.