ODFL· Old Dominion
Dark pool · off-exchange short volume
Short ratio (latest)
70.3%
20-day average
56.4%
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
204.96
2.86B
201.36
4.69B
197.77
5.85B
194.17
5.65B
190.58
4.68B
186.98
3.76B
183.39
3.51B
179.79
4.23B
176.19
3.46B
172.60
4.15B
169.00
3.79B
165.41
2.67B
161.81
3.23B
158.22
3.90B
154.62
3.52B
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.