CSX· CSX Corporation
Dark pool · off-exchange short volume
Short ratio (latest)
52.4%
20-day average
48.5%
Off-exchange share (20d)
30%
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
53.85
0.05B
52.87
0.67B
51.89
0.97B
50.91
2.38B
49.93
2.68B
48.95
1.56B
47.97
1.22B
46.99
1.63B
46.01
2.75B
45.03
2.58B
44.06
0.61B
43.08
0.98B
42.10
2.13B
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.