CACI ( CAI) plunged 14% in extended trading Wednesday after the information-technology company sharply cut its fiscal 2007 guidance, citing waning demand for certain contracts with the Department of Defense. It now expects to see earnings between $2.45 a share and $2.65 a share, down from the range announced in August of between $2.91 a share and $3.15 a share. Revenue will likely be between $1.88 billion and $1.95 billion. The prior sales range was between $2 billion and $2.1 billion. Analysts are looking for $3 a share on sales of $2 billion. Shares were sliding $7.90 to $47.20.

Ibis Technology ( IBIS) surged after the Danvers, Mass.-based small-cap estimated it would swing to a 2006 profit of $400,000, or 4 cents a share, compared with a loss of $9.2 million, or 86 cents a share, in 2005. The semiconductor-component maker also forecasts revenue will soar to $14 million, up from $600,000 last year. Shares were adding 26 cents, or 16.5%, to $1.83.

Electro Energy ( EEEI) jumped on word the specialized-battery maker will favorably restate results for the 2006 quarters ended June 30 and Sept. 30. Stockholders' equity is expected to rise about $9 million as the Danbury, Conn., company revalues its April 2006 purchase of certain Floridian battery-manufacturing assets. Shares were gaining a dime, or 6.7%, to $1.60.

Apple ( AAPL) gained after the computer maker reported profits well above Wall Street expectations. Fourth-quarter income ratcheted up to $1 billion, or $1.14 a share, crushing estimates by 36 cents, according to Thomson Financial. Last year the Cupertino, Calif.-based company earned $565 million, or 65 cents a share. In addition, revenue grew to $7.11 billion from last year's $5.75 billion, handily beating the $6.42 billion consensus. Shares were trading up 98 cents, or 1%, to $93.97.

Highwood Properties ( HIW) was higher after the real estate investment trust upped its 2006 funds-from-operation outlook to a range between $2.45 a share and $2.47 a share, compared with its prior forecast between $2.42 a share and $2.44 a share -- which had, itself, topped analysts' $2.33 a share estimates. Full-year 2007 FFO should be between $2.40 a share and $2.65 a share, the Raleigh, N.C.-based REIT said, which would easily cover the $2.45 a share mean target. FFO is an important measure that analysts use in evaluating REITs. Shares were rising 87 cents, or 2.2%, to $40.86.

MGI Pharma ( MOGN) rose after the Minneapolis-based company announced positive results for an advanced-phase study of its Saforis treatment, which treats a painful chemotherapy side effect called oral mucositis. Only 38.7% of the breast cancer patients taking Saforis experienced Grade 2 or higher oral mucositis as measured by the World Health Organization, compared with 49.7% of those administered a placebo. Among those suffering from the ailment, severe (Grade 3 or higher) levels were cut to 1.2% of patients treated with the drug, compared with 6.7% of those taking a placebo. Shares were climbing 49 cents, or 2.8%, to $18.

NVE ( NVEC) fell after the specialized-semiconductor maker fell short of expectations. The Eden Prairie, Minn.-based company more than doubled its income to $1.1 million, or 22 cents a share, compared with $401,000, or 9 cents a share, a year ago, but the analyst who follows the company was seeking 25 cents a share. Revenue leapt 48% to $3.86 million, also barely missing the $4 million target. Shares were down $2.45, or 8.3%, to $27.10.

More from Investing

REPLAY: Jim Cramer on How to Navigate the Stock Market Amid Tariff Worries

REPLAY: Jim Cramer on How to Navigate the Stock Market Amid Tariff Worries

Will Kraft Heinz Buy Pepsico or Mondelez?

Will Kraft Heinz Buy Pepsico or Mondelez?

Jim Cramer: 4 Stocks Could Get Throttled By a 'Knock Down Drag Out' With China

Jim Cramer: 4 Stocks Could Get Throttled By a 'Knock Down Drag Out' With China

Why Starbucks Latest Data Reveal Should Worry Investors

Why Starbucks Latest Data Reveal Should Worry Investors

Starbucks Sets Latest Plan to Recaffeinate Shares

Starbucks Sets Latest Plan to Recaffeinate Shares