BAC Dark Pool Activity
BANK OF NY MELLON CORP
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 7.8M BAC shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 2.1M of those shares (26.6%) were marked short or short-exempt, below BAC's 30-day rolling average of 35.4% (z-score -0.90). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), BAC's off-exchange short volume ratio ranged from 22.1% to 37.7% and averaged 28.8%; the latest reading is below that 10-session average.
Off-Exchange Volume
7.8M
Short Volume
2.1M
Short Volume Ratio
26.6%
30-Day Average
35.4%
z-score -0.90
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 8.8M | 3.0M | 34.3% |
| Oct 13, 2026 | 15.1M | 5.0M | 33.2% |
| Oct 14, 2026 | 44.3M | 16.7M | 37.7% |
| Oct 15, 2026 | 18.1M | 5.1M | 27.9% |
| Oct 16, 2026 | 18.7M | 5.6M | 29.7% |
| Oct 19, 2026 | 14.1M | 3.4M | 23.8% |
| Oct 20, 2026 | 14.3M | 3.3M | 23.3% |
| Oct 21, 2026 | 8.4M | 2.5M | 29.6% |
| Oct 22, 2026 | 12.2M | 2.7M | 22.1% |
| Oct 23, 2026 Latest | 7.8M | 2.1M | 26.6% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
BAC dark pool FAQ
- How much BAC off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 7.8M BAC shares in publicly disseminated off-exchange trades on Oct 23, 2026; 2.1M of those shares (26.6%) were marked short or short-exempt.
- Is BAC's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, BAC's short volume ratio of 26.6% is below BAC's 30-day rolling average of 35.4% (z-score -0.90). 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.