GRMN
Dark pool — off-exchange short volume
Short ratio (latest)
69.4%
20-day average
57.4%
Off-exchange share (20d)
37%
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
264.72
0.32B
260.08
0.22B
255.43
0.65B
250.79
0.94B
246.14
1.04B
241.50
1.29B
236.85
2.24B
232.21
1.84B
227.57
1.08B
222.92
0.84B
218.28
0.82B
213.63
2.34B
208.99
2.82B
204.34
3.59B
199.70
2.55B
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.