UHS· Universal Health Services
Dark pool · off-exchange short volume
Short ratio (latest)
63.9%
20-day average
67.0%
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
199.31
0.74B
195.81
0.72B
192.31
0.81B
188.82
1.50B
185.32
2.15B
181.82
2.34B
178.33
2.09B
174.83
1.99B
171.33
2.38B
167.84
1.72B
164.34
1.26B
160.84
1.11B
157.35
0.92B
153.85
1.43B
150.35
1.81B
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.