APD Dark Pool Activity
Air Products and Chemicals, Inc
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 318K APD shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 232K of those shares (73.1%) were marked short or short-exempt, above APD's 30-day rolling average of 56.7% (z-score 1.64). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), APD's off-exchange short volume ratio ranged from 49.0% to 74.2% and averaged 62.9%; the latest reading is above that 10-session average.
Off-Exchange Volume
318K
Short Volume
232K
Short Volume Ratio
73.1%
30-Day Average
56.7%
z-score 1.64
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 245K | 154K | 62.9% |
| Oct 13, 2026 | 300K | 188K | 62.7% |
| Oct 14, 2026 | 327K | 200K | 61.2% |
| Oct 15, 2026 | 448K | 315K | 70.4% |
| Oct 16, 2026 | 497K | 279K | 56.0% |
| Oct 19, 2026 | 338K | 196K | 58.0% |
| Oct 20, 2026 | 391K | 290K | 74.2% |
| Oct 21, 2026 | 207K | 126K | 61.0% |
| Oct 22, 2026 | 328K | 161K | 49.0% |
| Oct 23, 2026 Latest | 318K | 232K | 73.1% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
APD dark pool FAQ
- How much APD off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 318K APD shares in publicly disseminated off-exchange trades on Oct 23, 2026; 232K of those shares (73.1%) were marked short or short-exempt.
- Is APD's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, APD's short volume ratio of 73.1% is above APD's 30-day rolling average of 56.7% (z-score 1.64). 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.