ZBH
Dark pool — off-exchange short volume
Short ratio (latest)
62.9%
20-day average
59.3%
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
101.28
3.11B
99.50
2.32B
97.72
1.99B
95.95
2.33B
94.17
2.84B
92.39
3.91B
90.62
3.25B
88.84
2.37B
87.06
1.63B
85.29
1.12B
83.51
1.08B
81.73
0.76B
79.96
0.21B
78.18
0.07B
76.40
0.06B
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.