{
  "api": "assay-systems/v1",
  "key_tier": "none",
  "retrieved": "2026-10-17T23:00:43Z",
  "source": "Assay Systems register, https://assay-systems.com/register/",
  "access_notice": "On 15 November 2026, automated access to assay-systems.com closes. After that date, access is available only under a paid annual subscription contract. Contact: contact@assay-systems.com",
  "data": {
    "id": "ASY-CL-1K2I8O10CH",
    "type": "page",
    "country": "cl",
    "name": "CONSTRUCTORA SIGMA LIMITADA: public contracts won without a rival in Chile",
    "url": "https://assay-systems.com/register/cl/uncontested/s/constructora-sigma-limitada/",
    "figures": [
      {
        "label": "uncontested awards",
        "value": 25,
        "unit": "count"
      },
      {
        "label": "of its awards",
        "value": 96,
        "unit": "percent",
        "display": "96%"
      },
      {
        "label": "without a competition",
        "value": 24,
        "unit": "count"
      },
      {
        "label": "single bid",
        "value": 1,
        "unit": "count"
      }
    ],
    "text": [
      "CONSTRUCTORA SIGMA LIMITADA won 25 of its 26 public contract awards in Chile without a rival from 2024-01-02 to 2026-02-27: 24 without a competition and 1 after a competition that drew a single bid. 2 buyers awarded it without a rival, the largest SERVICIO DE SALUD COQUIMBO HOSPITAL LA SERENA with 24."
    ],
    "tables": [
      [
        {},
        {
          "Date": "2026-02-27",
          "Buyer": "SERVICIO NACIONAL DE PROTECCIÓN ESPECIALIZADA A LA NIÑEZ Y ADOLESCENCI CL-9634767",
          "Buyer link": "https://assay-systems.com/register/cl/uncontested/b/servicio-nacional-de-proteccion-especializada-a-la-ninez-y-adolescenci/",
          "How": "Single bid Licitación Pública Entre 100 y 1000 UTM (LE)",
          "Stated reason": "—"
        },
        {
          "Date": "2025-09-01",
          "Buyer": "SERVICIO DE SALUD COQUIMBO HOSPITAL LA SERENA CL-53359464",
          "Buyer link": "https://assay-systems.com/register/cl/uncontested/b/servicio-de-salud-coquimbo-hospital-la-serena/",
          "How": "No competition direct",
          "Stated reason": "Naturaleza de la negociación - Proveedor con alto grado de especialización"
        },
        {
          "Date": "2025-09-01",
          "Buyer": "SERVICIO DE SALUD COQUIMBO HOSPITAL LA SERENA CL-53359435",
          "Buyer link": "https://assay-systems.com/register/cl/uncontested/b/servicio-de-salud-coquimbo-hospital-la-serena/",
          "How": "No competition direct",
          "Stated reason": "Naturaleza de la negociación - Proveedor con alto grado de especialización"
        },
        {
          "Date": "2025-08-08",
          "Buyer": "SERVICIO DE SALUD COQUIMBO HOSPITAL LA SERENA CL-53221809",
          "Buyer link": "https://assay-systems.com/register/cl/uncontested/b/servicio-de-salud-coquimbo-hospital-la-serena/",
          "How": "No competition direct",
          "Stated reason": "Costo de evaluación desproporcionado, y por monto de contratación inferior a 100 UTM"
        },
        {
          "Date": "2025-08-08",
          "Buyer": "SERVICIO DE SALUD COQUIMBO HOSPITAL LA SERENA CL-53221694",
          "Buyer link": "https://assay-systems.com/register/cl/uncontested/b/servicio-de-salud-coquimbo-hospital-la-serena/",
          "How": "No competition direct",
          "Stated reason": "Costo de evaluación desproporcionado, y por monto de contratación inferior a 100 UTM"
        },
        {
          "Date": "2025-07-16",
          "Buyer": "SERVICIO DE SALUD COQUIMBO HOSPITAL LA SERENA CL-53077008",
          "Buyer link": "https://assay-systems.com/register/cl/uncontested/b/servicio-de-salud-coquimbo-hospital-la-serena/",
          "How": "No competition direct",
          "Stated reason": "Costo de evaluación desproporcionado, y por monto de contratación inferior a 100 UTM"
        }
      ]
    ],
    "records": [
      {
        "name": "all of Chile",
        "url": "https://assay-systems.com/register/cl/uncontested/"
      },
      {
        "name": "record in the register",
        "url": "https://assay-systems.com/register/cl/constructora-sigma-limitada/"
      },
      {
        "name": "SERVICIO DE SALUD COQUIMBO HOSPITAL LA SERENA",
        "url": "https://assay-systems.com/register/cl/uncontested/b/servicio-de-salud-coquimbo-hospital-la-serena/"
      },
      {
        "name": "SERVICIO NACIONAL DE PROTECCIÓN ESPECIALIZADA A LA NIÑEZ Y ADOLESCENCI",
        "url": "https://assay-systems.com/register/cl/uncontested/b/servicio-nacional-de-proteccion-especializada-a-la-ninez-y-adolescenci/"
      },
      {
        "name": "All countries",
        "url": "https://assay-systems.com/register/uncontested/"
      }
    ],
    "assay_record": "ASY-CL-1K2I8O10CH",
    "cite_as": "Assay Systems, \"CONSTRUCTORA SIGMA LIMITADA: public contracts won without a rival in Chile\", https://assay-systems.com/register/cl/uncontested/s/constructora-sigma-limitada/"
  }
}