RIVN Dark Pool Activity
Rivian Automotive, Inc. / De
Data as of Oct 26, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 26, 2026, FINRA reported 13.4M RIVN shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 6.5M of those shares (48.3%) were marked short or short-exempt, above RIVN's 30-day rolling average of 48.2% (z-score 0.03). Over the last 10 FINRA sessions (Oct 13, 2026 – Oct 26, 2026), RIVN's off-exchange short volume ratio ranged from 45.2% to 55.4% and averaged 49.6%; the latest reading is below that 10-session average.
Off-Exchange Volume
13.4M
Short Volume
6.5M
Short Volume Ratio
48.3%
30-Day Average
48.2%
z-score 0.03
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 13, 2026 | 8.0M | 4.1M | 51.6% |
| Oct 14, 2026 | 12.9M | 6.2M | 47.8% |
| Oct 15, 2026 | 12.8M | 6.8M | 53.1% |
| Oct 16, 2026 | 13.0M | 6.2M | 48.0% |
| Oct 19, 2026 | 12.1M | 5.6M | 46.5% |
| Oct 20, 2026 | 10.8M | 6.0M | 55.4% |
| Oct 21, 2026 | 10.4M | 5.2M | 50.0% |
| Oct 22, 2026 | 12.9M | 6.5M | 50.1% |
| Oct 23, 2026 | 13.6M | 6.1M | 45.2% |
| Oct 26, 2026 Latest | 13.4M | 6.5M | 48.3% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
RIVN dark pool FAQ
- How much RIVN off-exchange volume did FINRA report on Oct 26, 2026?
- FINRA's daily short sale volume file reported 13.4M RIVN shares in publicly disseminated off-exchange trades on Oct 26, 2026; 6.5M of those shares (48.3%) were marked short or short-exempt.
- Is RIVN's dark pool short volume ratio unusual right now?
- As of Oct 26, 2026, RIVN's short volume ratio of 48.3% is above RIVN's 30-day rolling average of 48.2% (z-score 0.03). 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.