AJG Dark Pool Activity
Arthur J. Gallagher & Co.
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 743K AJG shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 443K of those shares (59.6%) were marked short or short-exempt, above AJG's 30-day rolling average of 57.3% (z-score 0.35). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), AJG's off-exchange short volume ratio ranged from 54.8% to 68.7% and averaged 61.5%; the latest reading is below that 10-session average.
Off-Exchange Volume
743K
Short Volume
443K
Short Volume Ratio
59.6%
30-Day Average
57.3%
z-score 0.35
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 309K | 187K | 60.3% |
| Oct 13, 2026 | 340K | 186K | 54.8% |
| Oct 14, 2026 | 339K | 229K | 67.5% |
| Oct 15, 2026 | 923K | 597K | 64.7% |
| Oct 16, 2026 | 511K | 319K | 62.4% |
| Oct 19, 2026 | 423K | 291K | 68.7% |
| Oct 20, 2026 | 821K | 472K | 57.5% |
| Oct 21, 2026 | 541K | 340K | 62.9% |
| Oct 22, 2026 | 839K | 478K | 57.0% |
| Oct 23, 2026 Latest | 743K | 443K | 59.6% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
AJG dark pool FAQ
- How much AJG off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 743K AJG shares in publicly disseminated off-exchange trades on Oct 23, 2026; 443K of those shares (59.6%) were marked short or short-exempt.
- Is AJG's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, AJG's short volume ratio of 59.6% is above AJG's 30-day rolling average of 57.3% (z-score 0.35). 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.