BFLY Dark Pool Activity
Butterfly Network Inc
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 1.5M BFLY shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 1.1M of those shares (69.8%) were marked short or short-exempt, above BFLY's 30-day rolling average of 60.5% (z-score 1.45). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), BFLY's off-exchange short volume ratio ranged from 56.5% to 70.2% and averaged 64.9%; the latest reading is above that 10-session average.
Off-Exchange Volume
1.5M
Short Volume
1.1M
Short Volume Ratio
69.8%
30-Day Average
60.5%
z-score 1.45
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 1.6M | 1.1M | 66.2% |
| Oct 13, 2026 | 1.7M | 1.2M | 69.1% |
| Oct 14, 2026 | 1.8M | 1.1M | 63.5% |
| Oct 15, 2026 | 1.8M | 1.2M | 64.0% |
| Oct 16, 2026 | 1.9M | 1.2M | 60.7% |
| Oct 19, 2026 | 1.0M | 579K | 56.5% |
| Oct 20, 2026 | 1.4M | 941K | 65.2% |
| Oct 21, 2026 | 2.3M | 1.5M | 63.5% |
| Oct 22, 2026 | 2.5M | 1.8M | 70.2% |
| Oct 23, 2026 Latest | 1.5M | 1.1M | 69.8% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
BFLY dark pool FAQ
- How much BFLY off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 1.5M BFLY shares in publicly disseminated off-exchange trades on Oct 23, 2026; 1.1M of those shares (69.8%) were marked short or short-exempt.
- Is BFLY's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, BFLY's short volume ratio of 69.8% is above BFLY's 30-day rolling average of 60.5% (z-score 1.45). 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.