MDLN Dark Pool Activity
Medline Inc.
Data as of Oct 23, 2026 · Source: FINRA daily short sale volume (off-exchange)
On Oct 23, 2026, FINRA reported 2.3M MDLN shares in publicly disseminated off-exchange trades (dark pools and other off-exchange venues). 947K of those shares (41.7%) were marked short or short-exempt, below MDLN's 30-day rolling average of 62.6% (z-score -1.45). Over the last 10 FINRA sessions (Oct 12, 2026 – Oct 23, 2026), MDLN's off-exchange short volume ratio ranged from 41.7% to 83.1% and averaged 56.6%; the latest reading is below that 10-session average.
Off-Exchange Volume
2.3M
Short Volume
947K
Short Volume Ratio
41.7%
30-Day Average
62.6%
z-score -1.45
Daily readings — last 10 FINRA sessions
| Date | Off-exchange shares | Short shares | Short ratio |
|---|---|---|---|
| Oct 12, 2026 | 1.4M | 1.0M | 70.5% |
| Oct 13, 2026 | 1.6M | 1.0M | 64.0% |
| Oct 14, 2026 | 1.7M | 1.0M | 58.7% |
| Oct 15, 2026 | 2.9M | 1.8M | 61.6% |
| Oct 16, 2026 | 3.1M | 2.6M | 83.1% |
| Oct 19, 2026 | 2.8M | 1.4M | 49.4% |
| Oct 20, 2026 | 3.7M | 1.8M | 48.3% |
| Oct 21, 2026 | 2.7M | 1.3M | 46.1% |
| Oct 22, 2026 | 5.3M | 2.3M | 42.2% |
| Oct 23, 2026 Latest | 2.3M | 947K | 41.7% |
Source: FINRA daily short sale volume (off-exchange). Ratio = ShortVolume ÷ TotalVolume for the day.
MDLN dark pool FAQ
- How much MDLN off-exchange volume did FINRA report on Oct 23, 2026?
- FINRA's daily short sale volume file reported 2.3M MDLN shares in publicly disseminated off-exchange trades on Oct 23, 2026; 947K of those shares (41.7%) were marked short or short-exempt.
- Is MDLN's dark pool short volume ratio unusual right now?
- As of Oct 23, 2026, MDLN's short volume ratio of 41.7% is below MDLN's 30-day rolling average of 62.6% (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.