FIX· Comfort Systems USA
Dark pool · off-exchange short volume
Short ratio (latest)
54.8%
20-day average
49.7%
Off-exchange share (20d)
43%
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
1927.53
1.82B
1893.72
1.91B
1859.90
2.71B
1826.09
2.52B
1792.27
3.09B
1758.45
3.49B
1724.64
3.15B
1690.82
2.67B
1657.00
2.16B
1623.19
2.25B
1589.37
1.62B
1555.55
1.07B
1521.74
0.89B
1487.92
0.32B
1454.11
1.08B
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.