IBM Dark Pool Activity
INTERNATIONAL BUSINESS MACHS
Data as of Oct 22, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 22, 2026, FINRA reported 5.0M IBM shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 2.1M of those shares (42.6%) were marked short or short-exempt, below IBM's 30-day rolling average of 47.9% (z-score -0.77). Over the last 10 FINRA sessions (Oct 9, 2026 – Oct 22, 2026), IBM's off-exchange short volume ratio ranged from 36.9% to 50.1% and averaged 44.4%; the latest reading is below that 10-session average.
Off-Exchange Volume
5.0M
Short Volume
2.1M
Short Volume Ratio
42.6%
30-Day Average
47.9%
z-score -0.77
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 9, 2026 | 1.5M | 539K | 36.9% |
| Oct 12, 2026 | 1.1M | 478K | 42.9% |
| Oct 13, 2026 | 1.9M | 867K | 44.8% |
| Oct 14, 2026 | 1.5M | 693K | 45.0% |
| Oct 15, 2026 | 1.9M | 829K | 43.1% |
| Oct 16, 2026 | 1.9M | 906K | 48.5% |
| Oct 19, 2026 | 2.1M | 974K | 47.3% |
| Oct 20, 2026 | 2.5M | 1.1M | 43.2% |
| Oct 21, 2026 | 2.9M | 1.4M | 50.1% |
| Oct 22, 2026 Latest | 5.0M | 2.1M | 42.6% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
IBM dark pool FAQ
- How much IBM off-exchange volume did FINRA report on Oct 22, 2026?
- FINRA's daily short sale volume file reported 5.0M IBM shares in publicly disseminated off-exchange trades on Oct 22, 2026; 2.1M of those shares (42.6%) were marked short or short-exempt.
- Is IBM's dark pool short volume ratio unusual right now?
- As of Oct 22, 2026, IBM's short volume ratio of 42.6% is below IBM's 30-day rolling average of 47.9% (z-score -0.77). 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.