MMS Dark Pool Activity
Maximus, Inc.
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 166K MMS shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 118K of those shares (70.9%) were marked short or short-exempt, above MMS's 30-day rolling average of 57.3% (z-score 1.06). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), MMS's off-exchange short volume ratio ranged from 44.0% to 82.1% and averaged 65.8%; the latest reading is above that 10-session average.
Off-Exchange Volume
166K
Short Volume
118K
Short Volume Ratio
70.9%
30-Day Average
57.3%
z-score 1.06
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 243K | 177K | 72.9% |
| Oct 13, 2026 | 360K | 190K | 52.9% |
| Oct 14, 2026 | 178K | 139K | 78.3% |
| Oct 15, 2026 | 180K | 128K | 71.1% |
| Oct 16, 2026 | 287K | 235K | 82.1% |
| Oct 19, 2026 | 187K | 107K | 57.1% |
| Oct 20, 2026 | 189K | 113K | 59.7% |
| Oct 21, 2026 | 145K | 100K | 68.6% |
| Oct 22, 2026 | 240K | 106K | 44.0% |
| Oct 23, 2026 Latest | 166K | 118K | 70.9% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
MMS dark pool FAQ
- How much MMS off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 166K MMS shares in publicly disseminated off-exchange trades on Oct 23, 2026; 118K of those shares (70.9%) were marked short or short-exempt.
- Is MMS's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, MMS's short volume ratio of 70.9% is above MMS's 30-day rolling average of 57.3% (z-score 1.06). 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.