{
  "api": "assay-systems/v1",
  "key_tier": "none",
  "retrieved": "2026-10-18T03:08:53Z",
  "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-CO-1YTR23A0VF",
    "type": "page",
    "country": "co",
    "name": "TANDEM S.A.S: public contracts won without a rival in Colombia",
    "url": "https://assay-systems.com/register/co/uncontested/s/tandem-s-a-s/",
    "figures": [
      {
        "label": "uncontested awards",
        "value": 10,
        "unit": "count"
      },
      {
        "label": "of its awards",
        "value": 37,
        "unit": "percent",
        "display": "37%"
      },
      {
        "label": "without a competition",
        "value": 10,
        "unit": "count"
      },
      {
        "label": "single bid",
        "value": 0,
        "unit": "count"
      }
    ],
    "text": [
      "TANDEM S.A.S won 10 of its 27 public contract awards in Colombia without a rival from 2022-05-13 to 2025-11-28: 10 without a competition and 0 after a competition that drew a single bid. 4 buyers awarded it without a rival, the largest SUPERSOCIEDADES with 4."
    ],
    "tables": [
      [
        {},
        {
          "Date": "2025-11-28",
          "Buyer": "INSTITUTO COLOMBIANO PARA LA EVALUACIÓN DE LA EDUCACIÓN - ICFES CO1.PCCNTR.8648430",
          "Buyer link": "https://assay-systems.com/register/co/uncontested/b/instituto-colombiano-para-la-evaluacion-de-la-educacion-icfes/",
          "How": "No competition Contratación régimen especial",
          "Stated reason": "Regla aplicable"
        },
        {
          "Date": "2024-10-18",
          "Buyer": "INSTITUTO COLOMBIANO PARA LA EVALUACIÓN DE LA EDUCACIÓN - ICFES CO1.PCCNTR.6910977",
          "Buyer link": "https://assay-systems.com/register/co/uncontested/b/instituto-colombiano-para-la-evaluacion-de-la-educacion-icfes/",
          "How": "No competition Contratación régimen especial",
          "Stated reason": "Regla aplicable"
        },
        {
          "Date": "2024-08-09",
          "Buyer": "SUPERSOCIEDADES CO1.PCCNTR.6619986",
          "Buyer link": "https://assay-systems.com/register/co/uncontested/b/supersociedades/",
          "How": "No competition Contratación directa",
          "Stated reason": "No existe pluralidad de oferentes en el mercado"
        },
        {
          "Date": "2024-06-27",
          "Buyer": "DEPARTAMENTO ADMINISTRATIVO NACIONAL DE ESTADISTICA (DANE) CO1.PCCNTR.6466801",
          "Buyer link": "https://assay-systems.com/register/co/uncontested/b/dane-direccion-territorial-norte/",
          "How": "No competition Contratación directa",
          "Stated reason": "Arrendamiento de inmuebles"
        },
        {
          "Date": "2024-03-26",
          "Buyer": "INSTITUTO COLOMBIANO PARA LA EVALUACIÓN DE LA EDUCACIÓN - ICFES CO1.PCCNTR.6136606",
          "Buyer link": "https://assay-systems.com/register/co/uncontested/b/instituto-colombiano-para-la-evaluacion-de-la-educacion-icfes/",
          "How": "No competition Contratación régimen especial",
          "Stated reason": "Regla aplicable"
        },
        {
          "Date": "2024-02-14",
          "Buyer": "COMISION DE REGULACION DE ENERGIA Y GAS CO1.PCCNTR.5931331",
          "Buyer link": "https://assay-systems.com/register/co/uncontested/b/comision-de-regulacion-de-energia-y-gas/",
          "How": "No competition Contratación régimen especial",
          "Stated reason": "Decreto 092 de 2017"
        }
      ]
    ],
    "records": [
      {
        "name": "all of Colombia",
        "url": "https://assay-systems.com/register/co/uncontested/"
      },
      {
        "name": "record in the register",
        "url": "https://assay-systems.com/register/co/tandem-s-a-s/"
      },
      {
        "name": "SUPERSOCIEDADES",
        "url": "https://assay-systems.com/register/co/uncontested/b/supersociedades/"
      },
      {
        "name": "INSTITUTO COLOMBIANO PARA LA EVALUACIÓN DE LA EDUCACIÓN - ICFES",
        "url": "https://assay-systems.com/register/co/uncontested/b/instituto-colombiano-para-la-evaluacion-de-la-educacion-icfes/"
      },
      {
        "name": "COMISION DE REGULACION DE ENERGIA Y GAS",
        "url": "https://assay-systems.com/register/co/uncontested/b/comision-de-regulacion-de-energia-y-gas/"
      },
      {
        "name": "DEPARTAMENTO ADMINISTRATIVO NACIONAL DE ESTADISTICA (DANE)",
        "url": "https://assay-systems.com/register/co/uncontested/b/dane-direccion-territorial-norte/"
      },
      {
        "name": "All countries",
        "url": "https://assay-systems.com/register/uncontested/"
      }
    ],
    "assay_record": "ASY-CO-1YTR23A0VF",
    "cite_as": "Assay Systems, \"TANDEM S.A.S: public contracts won without a rival in Colombia\", https://assay-systems.com/register/co/uncontested/s/tandem-s-a-s/"
  }
}