MA Dark Pool Activity
Mastercard Inc
Data as of Oct 27, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 27, 2026, FINRA reported 1.4M MA shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 310K of those shares (22.7%) were marked short or short-exempt, below MA's 30-day rolling average of 36.3% (z-score -1.56). Over the last 10 FINRA sessions (Oct 14, 2026 – Oct 27, 2026), MA's off-exchange short volume ratio ranged from 22.7% to 43.6% and averaged 35.6%; the latest reading is below that 10-session average.
Off-Exchange Volume
1.4M
Short Volume
310K
Short Volume Ratio
22.7%
30-Day Average
36.3%
z-score -1.56
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 14, 2026 | 1.0M | 439K | 43.6% |
| Oct 15, 2026 | 1.6M | 568K | 36.0% |
| Oct 16, 2026 | 1.3M | 509K | 38.2% |
| Oct 19, 2026 | 1.2M | 407K | 33.5% |
| Oct 20, 2026 | 1.1M | 441K | 40.0% |
| Oct 21, 2026 | 884K | 370K | 41.8% |
| Oct 22, 2026 | 1.4M | 527K | 37.7% |
| Oct 23, 2026 | 1.2M | 347K | 29.9% |
| Oct 26, 2026 | 1.1M | 363K | 32.5% |
| Oct 27, 2026 Latest | 1.4M | 310K | 22.7% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
MA dark pool FAQ
- How much MA off-exchange volume did FINRA report on Oct 27, 2026?
- FINRA's daily short sale volume file reported 1.4M MA shares in publicly disseminated off-exchange trades on Oct 27, 2026; 310K of those shares (22.7%) were marked short or short-exempt.
- Is MA's dark pool short volume ratio unusual right now?
- As of Oct 27, 2026, MA's short volume ratio of 22.7% is below MA's 30-day rolling average of 36.3% (z-score -1.56). 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.