MAIR Dark Pool Activity
Madison Air Solutions Corporati
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 1.5M MAIR shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 242K of those shares (16.5%) were marked short or short-exempt, below MAIR's 30-day rolling average of 45.8% (z-score -2.35). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), MAIR's off-exchange short volume ratio ranged from 16.5% to 47.7% and averaged 35.9%; the latest reading is below that 10-session average.
Off-Exchange Volume
1.5M
Short Volume
242K
Short Volume Ratio
16.5%
30-Day Average
45.8%
z-score -2.35
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 971K | 303K | 31.3% |
| Oct 13, 2026 | 1.1M | 508K | 45.6% |
| Oct 14, 2026 | 822K | 299K | 36.4% |
| Oct 15, 2026 | 941K | 426K | 45.3% |
| Oct 16, 2026 | 643K | 245K | 38.0% |
| Oct 19, 2026 | 331K | 158K | 47.7% |
| Oct 20, 2026 | 699K | 291K | 41.7% |
| Oct 21, 2026 | 466K | 141K | 30.4% |
| Oct 22, 2026 | 1.3M | 336K | 26.2% |
| Oct 23, 2026 Latest | 1.5M | 242K | 16.5% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
MAIR dark pool FAQ
- How much MAIR off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 1.5M MAIR shares in publicly disseminated off-exchange trades on Oct 23, 2026; 242K of those shares (16.5%) were marked short or short-exempt.
- Is MAIR's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, MAIR's short volume ratio of 16.5% is below MAIR's 30-day rolling average of 45.8% (z-score -2.35). 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.