GLW· Corning Inc.
Dark pool · off-exchange short volume
Short ratio (latest)
38.3%
20-day average
44.8%
Off-exchange share (20d)
39%
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
189.70
5.71B
186.37
5.68B
183.04
4.22B
179.71
4.33B
176.38
4.31B
173.06
3.85B
169.73
5.17B
166.40
5.58B
163.07
4.93B
159.74
6.38B
156.42
4.97B
153.09
5.10B
149.76
5.14B
146.43
5.20B
143.10
4.54B
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.