Segmentation by type classifies therapeutic radioligands into small‑molecule, peptide‑based, antibody‑drug conjugates, and nanocarrier‑linked constructs. Small‑molecule agents, constituting roughly 40 % of the market, offer rapid tissue penetration and facile radiolabeling, supporting a broad spectrum of tumor targets. Peptide‑based radioligands, at 30 %, leverage high affinity for cell‑surface receptors such as somatostatin and PSMA, delivering precise dosimetry with favorable safety profiles. Antibody‑drug conjugates, representing 20 %, combine the specificity of monoclonal antibodies with radionuclide payloads, extending therapeutic reach to larger, less accessible antigens. Nanocarrier‑linked systems, the smallest share at 10 %, employ liposomes or polymeric particles to enhance pharmacokinetics and enable multimodal imaging. Each type contributes distinct value propositions—chemical stability, targeting precision, or delivery flexibility—that collectively define the market taxonomy and influence R&D allocation, regulatory pathways, and long‑term growth potential.