Stocks that moved substantially or traded heavily Wednesday:
Tesla Inc., up $28.37 to $319.50
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CEO Elon Musk said it's likely Tesla will reach its production targets for its Model 3 sedan by the end of June.
Athenahealth Inc., $6.30 to $157.44
The medical billing software company said it will consider a possible sale and its CEO stepped down.
Ambarella Inc., down $6.39 to $43
The video-compression chipmaker gave a disappointing revenue forecast.
Signet Jewelers Ltd., up $8.12 to $52.27
The jewelry retailer reported an adjusted profit, and stronger sales than analysts expected.
Devon Energy Inc., up $2.19 to $41.51
The oil and gas company said it will sell its interest in two other companies and buy back more stock.
Brown-Forman Corp., down $3.40 to $52.47
The maker of Jack Daniel's and other liquors higher costs affected its earnings in the first quarter.
Citigroup Inc., up $1.47 to $68.23
Banks rose in tandem with interest rates on Wednesday.
Alliant Energy Corp., down 62 cents to $39.13
Shares of utility companies other big-dividend payers also lost ground as income-seeking investors bought bonds instead.