Réflexions du service Actions des marchés émergents : concentration des indices sur l’IA

Jul 03, 2026

Notre équipe Actions des ME analyse comment les évolutions induites par l’IA au sein de l’indice de référence MSCI EM reflètent un véritable leadership technologique et une croissance des bénéfices, mais peuvent également poser des défis aux investisseurs.

Principaux enseignements:

  • Taïwan et la Corée du Sud dominent les indices : l’indice MSCI EM a connu une transformation radicale au cours de la dernière décennie. Ces deux représentent en effet désormais plus de la moitié de l’indice, grâce au développement des infrastructures liées à l’IA et à leur position de leader dans le secteur des semi-conducteurs. La pondération de la Chine est, elle, tombée en dessous de 20 %.
  • Des niveaux de concentration du marché sans précédent : les cinq principales valeurs composant l’indice représentent 35 % de celui-ci, et moins de 25 % des actions ont enregistré une performance supérieure à celle de l’indice au cours de l’année écoulée. Toutefois, même si ces chiffres sont extrêmes, il convient de noter que cette concentration s’est accompagnée d’une croissance substantielle des bénéfices et de progrès technologiques importants.
  • Une évolution de la gouvernance : des réformes législatives significatives en Corée du Sud favorisent une prise en compte accrue des intérêts des actionnaires et répondent à la décote de longue date des titres du pays sur le marché boursier. Cela constitue une tendance majeure qui s’inscrit dans la durée, à mesure que les pratiques de gouvernance et les rendements pour les actionnaires s’améliorent dans tout le pays.
  • Les opportunités offertes par l’IA s’étendent au-delà des leaders : au-delà des géants actuels du secteur des semi-conducteurs, des acteurs de deuxième et troisième rangs apparaissent dans les domaines de la conception de semi-conducteurs, du développement d’ASIC, des infrastructures d’alimentation électrique, des technologies de refroidissement, des équipements de test, des réseaux et de l’automatisation industrielle.
  • En dehors du secteur de l’IA : les valeurs de qualité et les secteurs nationaux, tels que la consommation et la finance, semblent relativement bon marché et affichent de solides retours sur investissement après avoir été un temps délaissés. À notre avis, les actions des marchés émergents peuvent surpasser des marchés développés, grâce à des fondamentaux plus solides, à une croissance des bénéfices en hausse et à un dollar américain plus faible.

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