FILL Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2025-10-20
FILL dark pool volume for the week of 2025-10-20: 10.6K shares traded across 8 ATS venues with a total notional value of $266K. Volume is up 6.2% week-over-week. Primary routing venues include , UBS ATS, LEVEL ATS.
Dark pool activity in FILL 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 FILL.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2025-10-20 | 10.6K | — | +6.2% |
| 2025-10-13 | 10.0K | — | -41.9% |
| 2025-10-06 | 17.2K | — | +522.6% |
| 2025-09-29 | 2.8K | — | +222.3% |
| 2025-09-22 | 859 | — | -64.0% |
| 2025-09-15 | 2.4K | — | +19.1% |
| 2025-09-08 | 2.0K | — | +267.7% |
| 2025-09-01 | 545 | — | -87.5% |
| 2025-08-25 | 4.3K | — | +130.3% |
| 2025-08-18 | 1.9K | — | -76.3% |
| 2025-08-11 | 7.9K | — | -49.9% |
| 2025-08-04 | 15.9K | — | +61.3% |