COF Dark Pool Activity
COMCAST CORP NEW
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 1.4M COF shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 337K of those shares (24.8%) were marked short or short-exempt, below COF's 30-day rolling average of 32.6% (z-score -0.75). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), COF's off-exchange short volume ratio ranged from 18.2% to 45.6% and averaged 32.0%; the latest reading is below that 10-session average.
Off-Exchange Volume
1.4M
Short Volume
337K
Short Volume Ratio
24.8%
30-Day Average
32.6%
z-score -0.75
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 670K | 305K | 45.6% |
| Oct 13, 2026 | 1.7M | 455K | 27.4% |
| Oct 14, 2026 | 1.4M | 532K | 38.2% |
| Oct 15, 2026 | 1.9M | 353K | 18.2% |
| Oct 16, 2026 | 2.0M | 654K | 33.4% |
| Oct 19, 2026 | 1.2M | 405K | 32.6% |
| Oct 20, 2026 | 1.6M | 606K | 36.8% |
| Oct 21, 2026 | 2.7M | 1.1M | 42.2% |
| Oct 22, 2026 | 1.8M | 370K | 20.4% |
| Oct 23, 2026 Latest | 1.4M | 337K | 24.8% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
COF dark pool FAQ
- How much COF off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 1.4M COF shares in publicly disseminated off-exchange trades on Oct 23, 2026; 337K of those shares (24.8%) were marked short or short-exempt.
- Is COF's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, COF's short volume ratio of 24.8% is below COF's 30-day rolling average of 32.6% (z-score -0.75). 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.