PLUG Dark Pool Activity
Plug Power Inc
Data as of Oct 26, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 26, 2026, FINRA reported 28.7M PLUG shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 18.5M of those shares (64.5%) were marked short or short-exempt, above PLUG's 30-day rolling average of 54.0% (z-score 1.23). Over the last 10 FINRA sessions (Oct 13, 2026 – Oct 26, 2026), PLUG's off-exchange short volume ratio ranged from 47.1% to 64.5% and averaged 56.2%; the latest reading is above that 10-session average.
Off-Exchange Volume
28.7M
Short Volume
18.5M
Short Volume Ratio
64.5%
30-Day Average
54.0%
z-score 1.23
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 13, 2026 | 28.7M | 15.8M | 55.0% |
| Oct 14, 2026 | 48.4M | 22.8M | 47.1% |
| Oct 15, 2026 | 34.4M | 19.4M | 56.5% |
| Oct 16, 2026 | 29.2M | 15.9M | 54.4% |
| Oct 19, 2026 | 23.9M | 12.9M | 54.0% |
| Oct 20, 2026 | 28.9M | 15.0M | 52.0% |
| Oct 21, 2026 | 24.3M | 14.7M | 60.4% |
| Oct 22, 2026 | 25.6M | 15.3M | 59.5% |
| Oct 23, 2026 | 16.4M | 9.6M | 58.4% |
| Oct 26, 2026 Latest | 28.7M | 18.5M | 64.5% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
PLUG dark pool FAQ
- How much PLUG off-exchange volume did FINRA report on Oct 26, 2026?
- FINRA's daily short sale volume file reported 28.7M PLUG shares in publicly disseminated off-exchange trades on Oct 26, 2026; 18.5M of those shares (64.5%) were marked short or short-exempt.
- Is PLUG's dark pool short volume ratio unusual right now?
- As of Oct 26, 2026, PLUG's short volume ratio of 64.5% is above PLUG's 30-day rolling average of 54.0% (z-score 1.23). 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.