CME Dark Pool Activity
Cme Group Inc.
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 617K CME shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 288K of those shares (46.8%) were marked short or short-exempt, above CME's 30-day rolling average of 40.4% (z-score 0.82). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), CME's off-exchange short volume ratio ranged from 30.2% to 51.8% and averaged 43.2%; the latest reading is above that 10-session average.
Off-Exchange Volume
617K
Short Volume
288K
Short Volume Ratio
46.8%
30-Day Average
40.4%
z-score 0.82
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 507K | 217K | 42.7% |
| Oct 13, 2026 | 549K | 282K | 51.3% |
| Oct 14, 2026 | 774K | 401K | 51.8% |
| Oct 15, 2026 | 783K | 319K | 40.7% |
| Oct 16, 2026 | 680K | 303K | 44.6% |
| Oct 19, 2026 | 883K | 412K | 46.7% |
| Oct 20, 2026 | 1.1M | 473K | 44.8% |
| Oct 21, 2026 | 737K | 223K | 30.2% |
| Oct 22, 2026 | 940K | 304K | 32.4% |
| Oct 23, 2026 Latest | 617K | 288K | 46.8% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
CME dark pool FAQ
- How much CME off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 617K CME shares in publicly disseminated off-exchange trades on Oct 23, 2026; 288K of those shares (46.8%) were marked short or short-exempt.
- Is CME's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, CME's short volume ratio of 46.8% is above CME's 30-day rolling average of 40.4% (z-score 0.82). 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.