IONS
Ionis Pharmaceuticals IncCompany with tickers: IONS
Market Cap
$12.95B
Shares Outstanding
165,262,556
CIK
874015
CUSIP
462222100
13F Activity (30d)
33 filings
7 filers
Website
Visit website
Weekly off-exchange (dark pool / OTC) trading volume reported to FINRA under its OTC/ATS Transparency data. ATS volume is executed on alternating trading systems (dark pools); non-ATS OTC is other over-the-counter dealer volume. The off-exchange share is total off-exchange volume as a percentage of consolidated weekly trading volume for the same Monday–Friday week.
Off-Exchange Volume History
| Week Start | ATS Volume | Non-ATS OTC Volume | Total Off-Exchange | % of FINRA Weekly Volume |
|---|---|---|---|---|
| 2026-06-01 | 2,339,880 | 1,139,009 | 3,478,889 | 43.2% |
| 2026-05-25 | 1,392,718 | 1,451,288 | 2,844,006 | 48.4% |
| 2026-05-18 | 3,442,223 | 821,038 | 4,263,261 | 50.4% |
| 2026-05-11 | 2,537,266 | 1,079,690 | 3,616,956 | 68.1% |
| 2026-05-04 | 1,711,838 | 1,755,457 | 3,467,295 | 54.2% |
| 2026-04-27 | 4,116,512 | 1,945,548 | 6,062,060 | 54.2% |
| 2026-04-20 | 2,292,051 | 1,199,282 | 3,491,333 | 59.1% |
| 2026-04-13 | 2,549,844 | 1,268,836 | 3,818,680 | 51.4% |
| 2026-04-06 | 2,525,252 | 518,533 | 3,043,785 | 46.2% |
| 2026-03-30 | 1,898,603 | 1,431,752 | 3,330,355 | 45.3% |
| 2026-03-23 | 3,604,288 | 2,063,657 | 5,667,945 | 44.0% |
| 2026-03-16 | 3,066,640 | 2,093,021 | 5,159,661 | 41.1% |
| 2026-03-09 | 3,432,728 | 2,257,662 | 5,690,390 | 46.2% |
| 2026-03-02 | 4,413,839 | 1,403,494 | 5,817,333 | 46.5% |
| 2026-02-23 | 3,909,691 | 2,026,078 | 5,935,769 | 44.3% |
| 2026-02-16 | 2,396,161 | 1,090,347 | 3,486,508 | 40.1% |
| 2026-02-09 | 2,420,601 | 1,105,356 | 3,525,957 | 44.7% |
| 2026-02-02 | 2,972,092 | 1,605,739 | 4,577,831 | 41.9% |
| 2026-01-26 | 3,087,167 | 2,274,907 | 5,362,074 | 54.0% |
| 2026-01-19 | 3,009,962 | 6,426,090 | 9,436,052 | 67.3% |
| 2026-01-12 | 2,956,110 | 1,825,914 | 4,782,024 | 47.9% |
| 2026-01-05 | 3,560,026 | 2,816,672 | 6,376,698 | 50.2% |
| 2025-12-29 | 1,449,870 | 575,540 | 2,025,410 | 42.9% |
| 2025-12-22 | 1,272,226 | 1,042,582 | 2,314,808 | 49.3% |
| 2025-12-15 | 2,926,703 | 1,774,362 | 4,701,065 | 41.2% |
| 2025-12-08 | 3,098,525 | 2,124,940 | 5,223,465 | 54.4% |
| 2025-12-01 | 4,109,848 | 1,242,186 | 5,352,034 | 49.2% |
| 2025-11-24 | 2,890,525 | 1,771,158 | 4,661,683 | 48.7% |
| 2025-11-17 | 3,969,476 | 2,776,317 | 6,745,793 | 46.6% |
| 2025-11-10 | 6,196,387 | 9,735,840 | 15,932,227 | 59.9% |
| 2025-11-03 | 3,846,448 | 1,167,261 | 5,013,709 | 44.3% |
| 2025-10-27 | 3,817,510 | 984,010 | 4,801,520 | 43.1% |
| 2025-10-20 | 2,733,566 | 1,604,220 | 4,337,786 | 48.0% |
| 2025-10-13 | 3,047,930 | 1,548,938 | 4,596,868 | 45.2% |
| 2025-10-06 | 3,118,825 | 1,445,295 | 4,564,120 | 43.5% |
| 2025-09-29 | 3,003,699 | 1,793,680 | 4,797,379 | 42.1% |
| 2025-09-22 | 3,237,844 | 1,280,346 | 4,518,190 | 44.4% |
| 2025-09-15 | 2,763,452 | 1,288,517 | 4,051,969 | 38.5% |
| 2025-09-08 | 3,691,352 | 2,062,707 | 5,754,059 | 45.6% |
| 2025-09-01 | 9,240,985 | 6,256,594 | 15,497,579 | 45.7% |
| 2025-08-25 | 2,149,440 | 1,467,321 | 3,616,761 | 43.2% |
| 2025-08-18 | 2,457,360 | 1,513,707 | 3,971,067 | 41.7% |
| 2025-08-11 | 2,875,669 | 1,525,185 | 4,400,854 | 46.4% |
| 2025-08-04 | 3,304,007 | 1,386,227 | 4,690,234 | 38.8% |
| 2025-07-28 | 3,955,673 | 2,588,736 | 6,544,409 | 49.6% |
| 2025-07-21 | 1,752,156 | 873,590 | 2,625,746 | 43.2% |
| 2025-07-14 | 2,752,410 | 1,263,089 | 4,015,499 | 45.2% |
| 2025-07-07 | 2,885,470 | 733,524 | 3,618,994 | 39.4% |
| 2025-06-30 | 4,025,530 | 1,211,165 | 5,236,695 | 50.0% |
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