MPC· Marathon Petroleum
Dark pool · off-exchange short volume
Short ratio (latest)
46.6%
20-day average
54.7%
Off-exchange share (20d)
37%
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
324.76
0.21B
318.52
0.71B
312.27
0.37B
306.02
0.35B
299.78
0.49B
293.53
0.23B
287.29
0.10B
281.04
0.45B
274.80
0.19B
268.55
1.21B
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.