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NEW YORK ( TheStreet) -- Stocks can't live on growth alone, they need great execution as well, Jim Cramer reminded his "Mad Money" viewers Wednesday as he highlighted the earnings from Tesla Motors (TSLA), which delivered on earnings but stumbled on execution.
Cramer said with a stock that's up 346% for the year, there's no room for error, which is why a shortage of batteries was enough to send shares skidding. There may be more selling tomorrow, Cramer noted, as another Elon Musk stock, SolarCity (SCTY), reports earnings. Once the battery issues are resolved, however, Cramer said he expects this "cult stock" to return to the hot seat.
Cramer used the Tesla story to warn investors investing in Twitter's initial public offering Thursday. He said if things are not perfect at Twitter, the moments after it opens may be that stock's high for the year.Being prudent is restraining, Cramer admitted, but as NPS Pharmaceuticals (NPSP) and Pioneer Natural Resources (PXD - Get Report) showed us today, a well-diversified portfolio is especially needed with stocks up over 100% for the year. Both NPS and Pioneer stocks tumbled today on quarters that were better than expected but not better than expected enough for growth-hungry investors. On the flip side, Cramer called out Hain Celestial (HAIN) and Open Table (OPEN), two companies with great growth and execution. Both stocks were handsomely rewarded for their efforts today.