CAT Dark Pool Activity
Caterpillar Inc
Data as of Oct 26, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 26, 2026, FINRA reported 924K CAT shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 252K of those shares (27.2%) were marked short or short-exempt, below CAT's 30-day rolling average of 50.7% (z-score -2.93). Over the last 10 FINRA sessions (Oct 13, 2026 – Oct 26, 2026), CAT's off-exchange short volume ratio ranged from 27.2% to 55.0% and averaged 44.5%; the latest reading is below that 10-session average.
Off-Exchange Volume
924K
Short Volume
252K
Short Volume Ratio
27.2%
30-Day Average
50.7%
z-score -2.93
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 13, 2026 | 1.5M | 818K | 52.9% |
| Oct 14, 2026 | 1.2M | 684K | 55.0% |
| Oct 15, 2026 | 1.7M | 685K | 40.7% |
| Oct 16, 2026 | 1.0M | 483K | 46.9% |
| Oct 19, 2026 | 892K | 489K | 54.8% |
| Oct 20, 2026 | 831K | 339K | 40.8% |
| Oct 21, 2026 | 847K | 358K | 42.2% |
| Oct 22, 2026 | 1.3M | 584K | 45.2% |
| Oct 23, 2026 | 1.3M | 527K | 39.4% |
| Oct 26, 2026 Latest | 924K | 252K | 27.2% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
CAT dark pool FAQ
- How much CAT off-exchange volume did FINRA report on Oct 26, 2026?
- FINRA's daily short sale volume file reported 924K CAT shares in publicly disseminated off-exchange trades on Oct 26, 2026; 252K of those shares (27.2%) were marked short or short-exempt.
- Is CAT's dark pool short volume ratio unusual right now?
- As of Oct 26, 2026, CAT's short volume ratio of 27.2% is below CAT's 30-day rolling average of 50.7% (z-score -2.93). 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.