** Shares of Dell Technologies DELL.N up 6% at $108,
Palantir Technologies PLTR.N up 7.6% at $32.6, while Erie
Indemnity Co ERIE.O rises 3% to $521.8 in extended trading
** All three companies are set to join the S&P 500 index,
prior to the open of trading on Sept. 23 - S&P Dow Jones Indices
** Companies to replace American Airlines Group, Etsy and
Bio-Rad Laboratories, respectively
** The changes ensure each index is more representative of
its market capitalization range - S&P
** DELL has risen 33.3%, PLTR 76.6% and ERIE 51.2%, YTD
(Reporting by Juby Babu in Mexico City)
((Juby.Babu@thomsonreuters.com;))