CNI Dark Pool Activity
Canadian National Railway Compa
Data as of Sep 10, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Sep 10, 2026, FINRA reported 334K CNI shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 191K of those shares (57.0%) were marked short or short-exempt, below CNI's 30-day rolling average of 63.6% (z-score -0.52).
Off-Exchange Volume
334K
Short Volume
191K
Short Volume Ratio
57.0%
30-Day Average
63.6%
z-score -0.52
CNI dark pool FAQ
- How much CNI off-exchange volume did FINRA report on Sep 10, 2026?
- FINRA's daily short sale volume file reported 334K CNI shares in publicly disseminated off-exchange trades on Sep 10, 2026; 191K of those shares (57.0%) were marked short or short-exempt.
- Is CNI's dark pool short volume ratio unusual right now?
- As of Sep 10, 2026, CNI's short volume ratio of 57.0% is below CNI's 30-day rolling average of 63.6% (z-score -0.52). 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.