Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in CATX held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | TCG Crossover Management, LLC | 7.9M | $33.0M | β | 10.247% | 0.94% |
| 2 | COMMODORE CAPITAL LP | 6.3M | $26.4M | β | 8.203% | 1.53% |
| 3 | Avidity Partners Management LP | 6.0M | $23.6M | +88.4% | 7.832% | 5.34% |
| 4 | BlackRock, Inc. | 5.3M | $22.3M | +17.3% | 6.924% | 0.00% |
| 5 | Opaleye Management Inc. | 4.7M | $19.5M | +294.7% | 6.052% | 2.57% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 4.4M | $18.3M | β | 5.669% | 0.00% |
| 7 | MILLENNIUM MANAGEMENT LLC | 4.0M | $16.9M | +187.7% | 5.238% | 0.01% |
| 8 | CITADEL ADVISORS LLC | 3.6M | $15.2M | +1018.4% | 4.712% | 0.01% |
| 9 | Affinity Asset Advisors, LLC | 3.2M | $13.2M | +954.9% | 4.096% | 0.77% |
| 10 | STATE STREET CORP | 3.1M | $13.1M | +174.5% | 4.055% | 0.00% |
| 11 | BALYASNY ASSET MANAGEMENT LLC | 3.0M | $12.5M | β | 3.876% | 0.04% |
| 12 | MORGAN STANLEY | 3.0M | $12.4M | -33.3% | 3.862% | 0.00% |
| 13 | Spruce Street Capital LP | 2.6M | $11.0M | β | 3.401% | 2.63% |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | 1.8M | $7.4M | +24.9% | 2.287% | 0.00% |
| 15 | Patient Square Capital LP | 1.6M | $6.8M | +43.5% | 2.104% | 1.20% |
| 16 | Nicholson Wealth Management Group, LLC | 1.6M | $6.8M | +0.1% | 2.096% | 3.93% |
| 17 | GOLDMAN SACHS GROUP INC | 1.2M | $5.2M | +676.9% | 1.607% | 0.00% |
| 18 | Yu Fan | 1.1M | $4.4M | β | 1.366% | 4.54% |
| 19 | TWO SIGMA INVESTMENTS, LP | 1.0M | $4.2M | -16.3% | 1.299% | 0.00% |
| 20 | Ally Bridge Group (NY) LLC | 927K | $3.9M | β | 1.199% | 3.60% |
| 21 | Nuveen, LLC | 910K | $3.8M | -28.5% | 1.178% | 0.00% |
| 22 | Hills Bank & Trust Co | 872K | $3.6M | -7.0% | 1.129% | 0.18% |
| 23 | Octagon Capital Advisors LP | 792K | $3.3M | β | 1.025% | 0.37% |
| 24 | VANGUARD PORTFOLIO MANAGEMENT LLC | 752K | $3.1M | β | 0.974% | 0.00% |
| 25 | ADAR1 Capital Management, LLC | 749K | $3.1M | +687.2% | 0.970% | 0.20% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in CATX β a direct measure of their conviction.
Filings activity in CATX during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new CATX position in Q1 2026
Institutions that fully closed their CATX position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 133 | +18% | 143.02% | +98.48 pp | $326M | +221% |
| Q4 2025 | 113 | +9.7% | 44.54% | 19.42 pp | $102M | 30% |
| Q3 2025 | 103 | +6.2% | 63.96% | +0.49 pp | $146M | +0.8% |
| Q2 2025 | 97 | 11% | 63.47% | +17.18 pp | $145M | +37% |
| Q1 2025 | 109 | 17% | 46.29% | 18.95 pp | $105M | 29% |
| Q4 2024 | 131 | +4.0% | 65.24% | 134.75 pp | $149M | 77% |
| Q3 2024 | 126 | +22% | 199.99% | +34.16 pp | $644M | +70% |
| Q2 2024 | 103 | β | 165.83% | β | $378M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying CATX stock.
Based on Q1 2026 13F filings, institutional ownership of Perspective Therapeutics, Inc. stands at 143.0%, held across 133 reporting institutions.
TCG Crossover Management, LLC is the largest reported institutional holder of CATX, with approximately 7,915,567 shares worth $0.03B as of Q1 2026.
Yes β 3 widely-followed marquee investors appear among the top 25 institutional holders of CATX, including MILLENNIUM MANAGEMENT LLC, CITADEL ADVISORS LLC, TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for CATX is 75 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
46 institutions opened new positions in CATX during Q1 2026, while 26 fully exited. 72 added to existing positions and 13 trimmed.
CATX institutional ownership rose by 98.48 percentage points quarter-over-quarter, with a net change of +20 holders.
The top 10 institutions account for 61.8% of all reported 13F value in CATX, and the top 25 account for 89.8%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Perspective Therapeutics, Inc. (CATX) Institutional Ownership