ORLY· O'Reilly Automotive

Dark pool · off-exchange short volume

as of 2026-11-05

ORLY's off-exchange short-volume ratio was 47.2% on 5 Nov 2026, above its 20-day average of 35.5%. Off-exchange trading was 32% of volume over the last 20 sessions. 18 sessions in the last six months had unusually large off-exchange dollar volume, the latest on 4 Nov 2026.

Short ratio (latest)

47.2%

20-day average

35.5%

Off-exchange share (20d)

32%

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

105.27

1.53B

103.42

3.49B

101.57

3.35B

99.73

3.35B

97.88

3.15B

96.03

3.05B

94.19

7.27B

92.34

10.0B

90.49

10.1B

88.65

7.58B

86.80

5.65B

84.95

4.22B

83.11

0.97B

81.26

0.16B

79.41

0.15B

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.