NEW YORK ( TheStreet) -- Wall Street's immediate response to Twitter's (TWTR) CEO's decision to step down announced late Thursday was to push the stock up 10%.
Although Twitter gave back most of those gains on Friday, Dick Costolo's resignation again raises the issue of whether replacing a chief executive always lead to success for the company -- and investors.
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Here is a look at some of the major CEO changes that have taken place both this year and in the past and how the company's stock price reacted.
It was announced on Jan. 28 that McDonald's (MCD) CEO Don Thompson would be shown the door and that he would be replaced on March 1 by Steve Easterbrook, the company's chief brand officer. McDonald's stock price was at a 2015 low of $88.78 on Jan. 28, but jumped to $93.27 on the following day. The stock topped out at $100.68 on May 19, but has since fallen back, closing at $95.59 on Thursday. The company just reported U.S. sales were down 2% in May, which beat estimates.
Mattel: No Impact
For Mattel (MAT), a changing of the guard had little overall impact except to send the company's stock price on a roller-coaster ride since Jan. 26, when CEO Bryan Stockton was ushered out with the stock price now basically at the same place it was on Stockton's last day at the helm. Stockton was replaced by Christopher Sinclair, who had been a Mattel director. The new hand on Mattel's wheel did not impress Wall Street. On Jan. 26, Mattel was priced at $26.64, and the stock closed at $26.59 on Thursday. In between those dates, the stock fell to $22.65 on April 2, and then rebounded to $30.22 three weeks later on April 24, before bouncing back to its current level.