UNP· Union Pacific Corporation
Dark pool · off-exchange short volume
Short ratio (latest)
57.5%
20-day average
52.9%
Off-exchange share (20d)
36%
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
318.53
0.02B
312.84
0.54B
307.15
2.51B
301.46
2.67B
295.78
3.53B
290.09
3.58B
284.40
1.68B
278.71
0.63B
273.02
2.66B
267.34
6.92B
261.65
8.78B
255.96
2.35B
250.27
5.40B
244.58
6.72B
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.