ACGL· Arch Capital Group
Dark pool · off-exchange short volume
Short ratio (latest)
18.1%
20-day average
39.5%
Off-exchange share (20d)
33%
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
109.54
0.17B
107.62
0.81B
105.70
0.69B
103.78
0.77B
101.86
1.15B
99.93
2.38B
98.01
3.17B
96.09
4.66B
94.17
5.27B
92.25
6.16B
90.32
4.99B
88.40
4.01B
86.48
2.42B
84.56
0.57B
82.64
0.92B
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.