OLN Dark Pool Activity
ATS off-exchange volume intelligence · Week of 2026-07-20
OLN dark pool volume for the week of 2026-07-20: 3.7M shares traded across 27 ATS venues with a total notional value of $86.5M. Volume is down 5.6% week-over-week. Off-exchange dark pool transactions account for 21.3% of total OLN market volume — elevated above the typical 10–14% institutional baseline, potentially signaling active accumulation or distribution. Primary routing venues include , INTELLIGENT CROSS LLC, LEVEL ATS.
Dark pool activity in OLN 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 OLN.
Weekly History
| Week | Shares | DP % | WoW |
|---|---|---|---|
| 2026-07-20 | 3.7M | 21.3% | -5.6% |
| 2026-07-13 | 3.9M | — | -28.9% |
| 2026-07-06 | 5.5M | — | +25.9% |
| 2026-06-29 | 4.4M | — | -11.8% |
| 2026-06-22 | 5.0M | — | -28.4% |
| 2026-06-15 | 7.0M | — | +180.4% |
| 2026-06-08 | 2.5M | — | -10.5% |
| 2026-06-01 | 2.8M | — | +13.4% |
| 2026-05-25 | 2.4M | — | +7.3% |
| 2026-05-18 | 2.3M | — | -27.7% |
| 2026-05-11 | 3.2M | — | -23.1% |
| 2026-05-04 | 4.1M | — | +77.3% |