MRSH Dark Pool Activity
Marsh & McLennan Companies, Inc.
Data as of Sep 11, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Sep 11, 2026, FINRA reported 541K MRSH shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 75K of those shares (13.9%) were marked short or short-exempt, below MRSH's 30-day rolling average of 40.0% (z-score -1.51).
Off-Exchange Volume
541K
Short Volume
75K
Short Volume Ratio
13.9%
30-Day Average
40.0%
z-score -1.51
MRSH dark pool FAQ
- How much MRSH off-exchange volume did FINRA report on Sep 11, 2026?
- FINRA's daily short sale volume file reported 541K MRSH shares in publicly disseminated off-exchange trades on Sep 11, 2026; 75K of those shares (13.9%) were marked short or short-exempt.
- Is MRSH's dark pool short volume ratio unusual right now?
- As of Sep 11, 2026, MRSH's short volume ratio of 13.9% is below MRSH's 30-day rolling average of 40.0% (z-score -1.51). 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.