BDX· Becton Dickinson
Dark pool · off-exchange short volume
Short ratio (latest)
69.3%
20-day average
55.8%
Off-exchange share (20d)
37%
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
202.75
0.64B
199.19
0.89B
195.64
2.62B
192.08
5.18B
188.52
7.80B
184.96
9.39B
181.41
14.1B
177.85
20.9B
174.29
20.6B
170.74
18.4B
167.18
12.3B
163.62
8.31B
160.07
7.68B
156.51
8.00B
152.95
7.32B
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.