EXR· Extra Space Storage
Dark pool · off-exchange short volume
Short ratio (latest)
59.7%
20-day average
45.1%
Off-exchange share (20d)
32%
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
156.91
1.00B
154.16
1.05B
151.40
1.85B
148.65
2.60B
145.90
4.84B
143.15
6.47B
140.39
6.14B
137.64
5.88B
134.89
5.00B
132.13
4.62B
129.38
4.88B
126.63
3.54B
123.88
1.50B
121.12
0.89B
118.37
0.38B
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.