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VLTO

Dark pool — off-exchange short volume

Short ratio (latest)
39.4%
20-day average
43.1%
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

94.27
1.06B
92.61
1.16B
90.96
1.22B
89.31
1.69B
87.65
1.70B
86.00
1.87B
84.34
0.53B
82.69
0.50B
81.04
0.34B
79.38
0.30B
77.73
0.54B
76.07
1.27B
74.42
1.16B
72.77
1.33B
71.11
0.59B

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.