AUR Dark Pool Activity
Aurora Innovation, Inc.
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 7.3M AUR shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 5.0M of those shares (67.7%) were marked short or short-exempt, above AUR's 30-day rolling average of 58.0% (z-score 1.19). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), AUR's off-exchange short volume ratio ranged from 49.7% to 73.2% and averaged 62.9%; the latest reading is above that 10-session average.
Off-Exchange Volume
7.3M
Short Volume
5.0M
Short Volume Ratio
67.7%
30-Day Average
58.0%
z-score 1.19
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 5.3M | 2.6M | 49.7% |
| Oct 13, 2026 | 6.8M | 3.8M | 56.0% |
| Oct 14, 2026 | 16.0M | 8.6M | 53.5% |
| Oct 15, 2026 | 14.7M | 9.4M | 64.3% |
| Oct 16, 2026 | 19.0M | 13.7M | 72.2% |
| Oct 19, 2026 | 11.2M | 7.8M | 69.3% |
| Oct 20, 2026 | 7.6M | 4.1M | 53.8% |
| Oct 21, 2026 | 6.7M | 4.9M | 73.2% |
| Oct 22, 2026 | 6.8M | 4.7M | 69.3% |
| Oct 23, 2026 Latest | 7.3M | 5.0M | 67.7% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
AUR dark pool FAQ
- How much AUR off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 7.3M AUR shares in publicly disseminated off-exchange trades on Oct 23, 2026; 5.0M of those shares (67.7%) were marked short or short-exempt.
- Is AUR's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, AUR's short volume ratio of 67.7% is above AUR's 30-day rolling average of 58.0% (z-score 1.19). Meridian's dark pool model does not flag this reading as an anomaly.
- What does the dark pool short volume ratio measure?
- FINRA publishes daily short sale volume for trades reported off-exchange to its trade reporting facilities, which include dark pools and other off-exchange venues. The ratio divides FINRA's ShortVolume figure, which counts both short and short-exempt sales, by the total off-exchange shares reported for that day. It is not short interest and not a directional signal: market-maker hedging and reporting mechanics can raise it, so it is context for other signals.