DAL· Delta Air Lines
Dark pool · off-exchange short volume
Short ratio (latest)
69.5%
20-day average
62.2%
Off-exchange share (20d)
40%
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
91.10
0.82B
89.50
1.05B
87.90
1.35B
86.30
1.92B
84.70
1.66B
83.11
1.64B
81.51
1.54B
79.91
1.40B
78.31
1.49B
76.71
0.48B
75.12
0.77B
73.52
1.25B
71.92
2.87B
70.32
5.58B
68.72
4.91B
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.