BLDR· Builders FirstSource
Dark pool · off-exchange short volume
Short ratio (latest)
38.3%
20-day average
46.7%
Off-exchange share (20d)
42%
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
68.82
1.16B
67.61
1.28B
66.41
1.14B
65.20
1.39B
63.99
1.00B
62.78
0.81B
61.58
0.80B
60.37
0.74B
59.16
0.55B
57.96
0.54B
56.75
0.36B
55.54
0.35B
54.33
0.52B
53.13
0.46B
51.92
0.41B
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.