U.S. HOT STOCK FUTURES: HOT STOCKS TO WATCH

Among companies with shares expected to actively trade in Monday's session is Herbalife Ltd. (HLF), Acme Packet Inc. (APKT) and Rockwell Medical Inc. (RMTI).

Herbalife Ltd. (HLF) may be under investigation by the Federal Trade Commission, The New York Post reported Monday, citing documents obtained via the Freedom on Information Law. The nutritional-supplements maker is embroiled in a public battle over its business model, defending itself against criticism from hedge fund manager William Ackman who argues it is a pyramid scheme. Shares fell 9.4% to $31.80 in premarket trade.

Oracle Corp. (ORCL) agreed to buy Acme Packet Inc. (APKT) for about $1.98 billion in cash, a deal the technology heavyweight said will accelerate the deployment of all-IP networks. Oracle will pay Acme's shareholders a per-share cash price of $29.25, a premium of 22% over Friday's close. Acme Packet shares rose 22% to match the offer price.

Rockwell Medical Inc. (RMTI) said its iron-delivery drug met its targets in a late-stage trial, sending shares up 26% to $8.10 in premarket trade.

Brown & Brown Inc.'s (BRO) fourth-quarter earnings rose 17% as the insurance agency and brokerage firm continued to report top-line growth from commissions and fees. Shares jumped 5.4% to $28.97 in premarket trading after results beat Wall Street expectations.

 
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Standard & Poor's downgraded its rating on NII Holdings Inc. (NIHD) one notch further into speculative territory, noting the wireless carrier's credit measures have deteriorated from factors including a delay in deploying 3G networks in its markets, primarily Brazil.

Moody's Investors Service placed its rating on Scientific Games Corp. (SGMS) on review for a possible downgrade, noting the company's plans to buy gaming-machine maker WMS Industries Inc. (WMS) for $1.5 billion will increase its leverage.

Wet Seal Inc. (WTSLA) unveiled a series of cost-reduction efforts, including the elimination of the chief operating officer position, that will save the teen-clothing retailer about $5.5 million this year.

Yahoo Inc.'s (YHOO) biggest shareholder has sold 11 million shares, as it seeks to maintain a consistent percentage holding in the Internet firm amid Yahoo's aggressive stock buyback program.

Write to Mia Lamar at [e-mail]

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