Paul Singer's Elliott Management is adding to its bet on one Apple supplier.
The activist hedge fund bought 4.06 million shares of NXP Semiconductor in the third quarter, a filing with the U.S. Securities and Exchange Commission showed Tuesday.
That increases Elliott's stake in the chipmaker to 16.44 million, worth about $1.86 billion at Tuesday's prices. NXP Semiconductor is listed as one of Apple's suppliers in a February document.
The filing also showed Elliott initiated a 2.3 million share stake in mall operator Taubman Centers.
The activist fund has spoken with management of the real estate investment trust about pursuing potential options that include going private, a source familiar with the situation told CNBC ahead of the filing's release.
— CNBC's Robert Hum contributed to this report.