FAST· Fastenal

Dark pool · off-exchange short volume

as of 2026-11-05

FAST's off-exchange short-volume ratio was 63.6% on 5 Nov 2026, in line with its 20-day average of 63.4%. Off-exchange trading was 29% of volume over the last 20 sessions. 11 sessions in the last six months had unusually large off-exchange dollar volume, the latest on 4 Nov 2026.

Short ratio (latest)

63.6%

20-day average

63.4%

Off-exchange share (20d)

29%

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

54.27

0.01B

53.21

0.30B

52.15

1.41B

51.08

2.35B

50.02

1.60B

48.95

2.27B

47.89

2.83B

46.82

5.03B

45.76

4.33B

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.