Το σκίτσο είναι για τις ΗΠΑ, αλλά, σε μικρογραφία, εκεί βαδίζουμε και εδώ

In Economics, an oligopoly is a market form in which a market or industry is dominated by a small number of sellers (oligopolists). The word is derived, by analogy with "monopoly", from the Greek ὀλίγοι (oligoi) "few" + πωλειν (polein) "to sell". Because there are few sellers, each oligopolist is likely to be aware of the actions of the others. The decisions of one firm influence, and are influenced by, the decisions of other firms. Strategic planning by oligopolists needs to take into account the likely responses of the other market participants.

Oligopoly is a common market form. As a quantitative description of oligopoly, the four-firm concentration ratio is often utilized. This measure expresses the market share of the four largest firms in an industry as a percentage. For example, as of fourth quarter 2008, Verizon, AT&T, Sprint Nextel, and T-Mobile together control 89% of the US cellular phone market.

Ο Γιώργος Παπανδρέου μιλώντας στο Reuters Ιnsider έστειλε σαφές μήνυμα στον τραπεζικό κλάδο λέγοντας ξεκάθαρα ότι προσδοκά σε συγχωνεύσεις που θα καταλήξουν "σε μια ισχυρή κρατική τράπεζα και δύο ή τρεις ιδιωτικές".