Shares of Duolingo, Inc. (DUOL) are up 8% on Thursday following the company's announcement of its inclusion in the S&P MidCap 400, taking the place of Cable One Inc. (CABO).
DUOL is trading on the Nasdaq at $211.99, up 8.90% or $17.32 per share. It has traded between $116.82 and $245.87 in the past 52-week period.
Cable One will then replace MDC Holdings Inc. (MDC) in the S&P SmallCap 600 before the market opens on Monday, April 22.
This change comes as Sekisui House Ltd. is in the process of acquiring MDC Holdings, with the transaction anticipated to conclude on April 19, pending final conditions.
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June 19, 2026 16:46 ET Major central banks continued to dominate the economic news flow this week too, led by the Federal Reserve, as they announced their latest policy decisions. The Federal Reserve policy session was in focus as it was the first to be led by the new chief Kevin Warsh. In Europe, central banks of the U.K. and Switzerland announced their rate decisions. In Asia, the Bank of Japan drew attention for its policy moves, while data out of China threw some light on the state of the economy.