DGX· Quest Diagnostics
Dark pool · off-exchange short volume
Short ratio (latest)
70.3%
20-day average
65.5%
Off-exchange share (20d)
38%
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
249.12
0.01B
244.42
0.50B
239.72
0.82B
235.02
1.13B
230.32
0.55B
225.62
0.22B
220.92
0.07B
216.22
0.19B
211.52
0.68B
206.82
1.47B
202.12
1.34B
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.