Dell Technologies Inc. (NYSE:DELL) shares roseMonday after S&P Dow Jones Indices announced on Friday that Dell will be added to the S&P 500 Index. The Details: Dell will replace Etsy, Inc. (NASDAQ:ETSY) when it is added to the S&P 500 Index before the start of regular trading on Sept. 23. Palantir Technologies, Inc. (NYSE:PLTR) and Erie Indemnity Company (NASDAQ:ERIE) will also be added to the S&P 500. Index inclusion is typically positive for stocks due to increased trading volume and liquidity resulting from purchases by index funds, ETFs and other funds mirroring the index. Read Next: What’…