SION · Sionna Therapeutics, Inc.
$44.78
-1.78 (-3.81%)
At close · Jul 29
Market Cap
$2.10B
Shares
45.15M
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 |
|---|---|---|---|---|
| 2026-05-04 | 707,829 | 260,443 | 968,272 | 50.9% |
| 2026-04-27 | 421,689 | 336,393 | 758,082 | 45.3% |
| 2026-04-20 | 615,597 | 274,765 | 890,362 | 51.8% |
| 2026-04-13 | 1,543,142 | 363,671 | 1,906,813 | 76.9% |
| 2026-04-06 | 362,138 | 128,357 | 490,495 | 35.3% |
| 2026-03-30 | 557,646 | 243,375 | 801,021 | 55.6% |
| 2026-03-23 | 441,946 | 360,551 | 802,497 | 48.2% |
| 2026-03-16 | 405,682 | 175,146 | 580,828 | 39.8% |
| 2026-03-09 | 493,815 | 87,000 | 580,815 | 45.3% |
| 2026-03-02 | 598,427 | 69,573 | 668,000 | 41.1% |
| 2026-02-23 | 304,114 | 61,956 | 366,070 | 40.1% |
| 2026-02-16 | 185,661 | 55,987 | 241,648 | 44.0% |
| 2026-02-09 | 402,267 | 198,494 | 600,761 | 38.6% |
| 2026-02-02 | 744,481 | 313,001 | 1,057,482 | 41.3% |
| 2026-01-26 | 331,050 | 75,504 | 406,554 | 46.3% |
| 2026-01-19 | 332,414 | 405,398 | 737,812 | 60.9% |
| 2026-01-12 | 411,104 | 99,270 | 510,374 | 41.1% |
| 2026-01-05 | 611,715 | 187,625 | 799,340 | 42.9% |
| 2025-12-29 | 294,822 | 121,085 | 415,907 | 40.1% |
| 2025-12-22 | 297,035 | 51,288 | 348,323 | 46.2% |
| 2025-12-15 | 677,161 | 313,082 | 990,243 | 31.6% |
| 2025-12-08 | 362,691 | 103,387 | 466,078 | 43.8% |
| 2025-12-01 | 696,965 | 167,147 | 864,112 | 47.3% |
| 2025-11-24 | 442,488 | 178,091 | 620,579 | 58.9% |
| 2025-11-17 | 411,395 | 254,846 | 666,241 | 48.3% |
| 2025-11-10 | 245,417 | 179,381 | 424,798 | 48.7% |
| 2025-11-03 | 246,259 | 292,752 | 539,011 | 49.1% |
| 2025-10-27 | 271,685 | 76,252 | 347,937 | 41.3% |
| 2025-10-20 | 948,140 | 506,590 | 1,454,730 | 51.9% |
| 2025-10-13 | 706,348 | 148,298 | 854,646 | 51.5% |
| 2025-10-06 | 705,326 | 221,538 | 926,864 | 49.3% |
| 2025-09-29 | 417,637 | 105,133 | 522,770 | 39.0% |
| 2025-09-22 | 433,220 | 289,635 | 722,855 | 44.5% |
| 2025-09-15 | 309,869 | 109,963 | 419,832 | 30.2% |
| 2025-09-08 | 436,996 | 433,705 | 870,701 | 54.0% |
| 2025-09-01 | 331,881 | 590,690 | 922,571 | 67.4% |
| 2025-08-25 | 178,148 | 79,426 | 257,574 | 34.6% |
| 2025-08-18 | 372,580 | 132,938 | 505,518 | 40.3% |
| 2025-08-11 | 366,110 | 247,815 | 613,925 | 51.4% |
| 2025-08-04 | 230,428 | 44,017 | 274,445 | 43.7% |
Showing 1–40 of 40 weeks
Key facts
CIK
2036042
CUSIP
829401108
13F (30d)
13 filings
13 filers
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