GEOS - R.R. Donnelley drops 4.1% after removal from SmallCap 600 set; AMCX +5.6%

R.R. Donnelley & Sons (RRD) is down 4.1% after hours, in response to the company getting bounced from the S&P SmallCap 600 index in a series of pre-holiday shuffles. Concentrix (CNXC) is being added to the S&P MidCap 400 before the open of trading Tuesday, Dec. 1; that's just after the expected close of a transaction where Synnex (SNX) spins off Concentrix. Synnex will remain in the MidCap 400 itself after the spin-off. Making room in the 400 for Concentrix is AMC Networks (AMCX), which is moving down to the SmallCap 600 as more appropriate for that market space. [[AMCX]] is up 5.6% after hours. And that leaves no room for R.R. Donnelley. Elsewhere, Geospace Technologies (GEOS) will exit the SmallCap 600 as no longer representative as a small-cap. It's making room for the spin-off of The Aaron's Company from Aaron's Holdings (AAN). The Aaron's Company will enter the SmallCap

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R.R. Donnelley drops 4.1% after removal from SmallCap 600 set; AMCX +5.6%