FIX· Comfort Systems USA
Dark pool · off-exchange short volume
Short ratio (latest)
61.4%
20-day average
50.7%
Off-exchange share (20d)
41%
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
2087.51
0.03B
2050.89
0.41B
2014.27
0.93B
1977.64
2.16B
1941.02
2.29B
1904.40
1.85B
1867.77
2.71B
1831.15
2.37B
1794.53
2.37B
1757.90
2.33B
1721.28
1.88B
1684.66
1.38B
1648.04
1.19B
1611.41
0.92B
1574.79
0.46B
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.