ISORAY INC (CATXXXXX)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
2
Reporting holders
$852.6K
Reported value
0.0%
Held as options
+0
Holder change
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| PORTLAND INVESTMENT COUNSEL INC. | $852.5K | 250,000 | 0.24% | 11q | HELD |
| VESTOR CAPITAL, LLC | $55 | 56 | 0.00% | 6q | -100.0%-$1.1M |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 2 | $852.6K | 250,056 | 0 | 0 | 1 | 0.0% |
| Q1 2026 | 2 | $1.0M | 1,348,691 | 0 | 1 | 0 | 0.0% |
| Q4 2025 | 2 | $690.2K | 250,502 | 0 | 0 | 1 | 0.0% |
| Q3 2025 | 2 | $860.8K | 1,221,976 | 0 | 1 | 0 | 0.0% |
| Q2 2025 | 2 | $940.1K | 251,101 | 0 | 1 | 1 | 0.0% |
| Q1 2025 | 2 | $406.8K | 1,164,720 | 1 | 1 | 0 | 0.0% |
| Q4 2024 | 1 | $478.5K | 150,000 | 0 | 1 | 0 | 0.0% |
| Q3 2024 | 1 | $934.5K | 70,001 | 0 | 0 | 0 | 0.0% |
| Q2 2024 | 2 | $735.4K | 105,001 | 0 | 0 | 1 | 0.0% |
| Q1 2024 | 93 | $295.5M | 248,150,402 | 52 | 18 | 10 | 0.0% |
| Q4 2023 | 44 | $14.2M | 35,386,687 | 8 | 9 | 4 | 0.0% |
| Q3 2023 | 43 | $9.1M | 33,274,949 | 3 | 9 | 9 | 0.0% |
| Q2 2023 | 44 | $19.2M | 28,743,355 | 11 | 8 | 7 | 0.0% |
| Q1 2023 | 36 | $15.7M | 24,575,869 | 5 | 6 | 4 | 0.0% |
| Q4 2022 | 39 | $3.2M | 12,762,752 | 11 | 3 | 0 | 0.0% |
| Q3 2022 | 34 | $3.7M | 16,085,913 | 0 | 2 | 8 | 0.0% |
| Q2 2022 | 40 | $5.2M | 16,788,664 | 5 | 5 | 8 | 0.0% |
| Q1 2022 | 37 | $5.8M | 15,945,353 | 3 | 9 | 5 | 0.0% |
| Q4 2021 | 42 | $6.8M | 17,656,711 | 7 | 5 | 9 | 0.0% |
| Q3 2021 | 38 | $10.0M | 15,832,387 | 3 | 3 | 8 | 0.0% |
| Q2 2021 | 42 | $13.9M | 17,373,916 | 5 | 9 | 9 | 0.0% |
| Q1 2021 | 52 | $20.2M | 18,537,630 | 17 | 16 | 4 | 0.0% |
| Q4 2020 | 42 | $4.1M | 8,601,839 | 7 | 9 | 2 | 0.0% |
| Q3 2020 | 38 | $3.9M | 6,756,897 | 5 | 3 | 6 | 0.0% |
| Q2 2020 | 37 | $3.9M | 7,071,020 | 4 | 5 | 6 | 0.0% |
| Q1 2020 | 35 | $3.8M | 7,224,973 | 6 | 8 | 4 | 0.0% |
| Q4 2019 | 31 | $2.8M | 4,480,134 | 7 | 7 | 4 | 0.0% |
| Q3 2019 | 28 | $1.2M | 3,690,906 | 7 | 2 | 2 | 0.0% |
| Q2 2019 | 27 | $1.6M | 3,993,892 | 2 | 2 | 2 | 0.0% |
| Q1 2019 | 29 | $1.8M | 4,891,845 | 3 | 3 | 5 | 0.0% |
| Q4 2018 | 27 | $1.8M | 6,094,612 | 1 | 0 | 0 | 0.0% |