IDXX· Idexx Laboratories

Dark pool · off-exchange short volume

Dark pool as of 2026-11-04 · latest session 2026-11-05

IDXX's off-exchange short-volume ratio was 40.6% on 4 Nov 2026, below its 20-day average of 55.0%. Off-exchange trading was 36% of volume over the last 20 sessions. 14 sessions in the last six months had unusually large off-exchange dollar volume, the latest on 2 Nov 2026.

Short ratio (latest)

40.6%

20-day average

55.0%

Off-exchange share (20d)

36%

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

766.13

0.15B

752.68

0.27B

739.24

0.45B

725.80

0.96B

712.36

2.25B

698.92

2.73B

685.48

2.55B

672.04

2.70B

658.60

2.88B

645.16

4.79B

631.72

4.70B

618.28

1.98B

604.84

1.42B

591.40

1.60B

577.95

3.67B

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.