BUZZ — Steel Dynamics, Nucor fall on weaker — than — expected Q3 earnings forecast

* Shares of US steel makers Steel Dynamics and Nucor fall premarket * Steel Dynamics down 1.8% at $241, while Nucor dips 2% to $260.37 * On Thursday, STLD forecast Q3 earnings between $5.34 and $5.38 per share, vs analysts' estimate of $5.50 - data compiled * Nucor forecasts Q3 earnings in the range of $5.55 to $5.65 per share, while analysts expect $5.89 * As of last close, STLD up 44.8% and NUE up 62.6% YTD (Reporting by Apratim Sarkar in Bengaluru) ((Apratim.Sarkar@thomsonreuters.com)