AON· Aon plc

Dark pool · off-exchange short volume

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

AON's off-exchange short-volume ratio was 55.3% on 4 Nov 2026, above its 20-day average of 50.3%. Off-exchange trading was 38% of volume over the last 20 sessions. 15 sessions in the last six months had unusually large off-exchange dollar volume, the latest on 17 Sep 2026.

Short ratio (latest)

55.3%

20-day average

50.3%

Off-exchange share (20d)

38%

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

376.38

2.91B

369.78

5.45B

363.18

7.18B

356.57

10.6B

349.97

10.6B

343.37

7.67B

336.76

5.08B

330.16

7.38B

323.56

12.3B

316.95

11.1B

310.35

8.81B

303.75

5.75B

297.14

6.77B

290.54

8.20B

283.94

8.55B

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.