Analyzing average institutional block trade size vs odd-lot executions in ALNY
Analyzing average institutional block trade size vs odd-lot executions in ALNY
According to verified FINRA RegSHO Daily Short Volume and Alternative Trading System (ATS) transparency records for ALNYLAM PHARMACEUTICALS, INC. (ticker ALNY), off-exchange market venues executed 334,819 shares against 498,473 total recorded market shares on 2026-09-11, representing an off-exchange trading ratio of 67.2%. This concentration of liquidity in dark pools and OTC internalizers indicates substantial institutional order routing away from public lit exchanges. In quantitative capital intelligence workflows, tracking whether off-exchange participation exceeds standard historical baselines provides an empirical early indicator of private position accumulation or institutional hedging activity ahead of material catalyst disclosures.
Verified Quantitative Data
| Metric | Value |
|---|---|
| Ratio | 0.6717 |
| Total | 498473 |
| Shares | 334819 |
Primary Source Record
This fact is compiled from public federal disclosure records. Explore the underlying dataset on the Federal Contract Explorer and the Capitol Trades leaderboard.
Data intelligence from public filings — not investment advice.