IDXX· Idexx Laboratories
Dark pool · off-exchange short volume
Short ratio (latest)
19.7%
20-day average
34.2%
Off-exchange share (20d)
34%
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
575.36
3.20B
565.26
4.73B
555.17
6.24B
545.08
4.97B
534.98
4.42B
524.89
4.52B
514.79
4.13B
504.70
4.46B
494.61
5.72B
484.51
6.50B
474.42
5.47B
464.32
4.11B
454.23
3.47B
444.14
2.27B
434.04
4.71B
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.