ALNY Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
ALNY dark pool volume for the week of 2026-07-20: 2.0M shares traded across 29 ATS venues with a total notional value of $536.7M. Volume is down 23.9% week-over-week. Primary routing venues include , INTELLIGENT CROSS LLC, SIGMA X2.
Dark pool activity in ALNY reflects institutional order flow executing on Alternative Trading Systems (ATS) registered with the SEC — private venues where large-block trades are matched away from public exchanges to minimize price impact. StonkWhisper ingests FINRA-published ATS volume data to track these off-exchange flows. Sustained elevation in dark pool percentage — particularly when concentrated at specific venues — can indicate institutional accumulation or distribution ahead of significant price moves. The interactive charts below show 12-week historical volume and complete venue breakdown for ALNY.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 2.0M | — | -23.9% |
| 2026-07-13 | 2.6M | — | -32.8% |
| 2026-07-06 | 3.9M | — | +180.2% |
| 2026-06-29 | 1.4M | — | -27.7% |
| 2026-06-22 | 1.9M | — | +27.3% |
| 2026-06-15 | 1.5M | — | -32.6% |
| 2026-06-08 | 2.2M | — | +40.3% |
| 2026-06-01 | 1.6M | — | +56.9% |
| 2026-05-25 | 1.0M | — | +4.5% |
| 2026-05-18 | 971.0K | — | -34.8% |
| 2026-05-11 | 1.5M | — | -18.8% |
| 2026-05-04 | 1.8M | — | -30.0% |