Tower Research Capital LLC TRC boosted its stake in shares of Baidu by 749.1% in the 4th quarter. Tower Research Capital LLC TRC now owns 3,872 shares of the information services provider's stock valued at $326,000 after purchasing an additional 3,416 shares in the last quarter. Finally, Pinebridge Investments L.P. boosted its stake in shares of Baidu by 8.0% in the 4th quarter. Pinebridge Investments L.P. now owns 66,383 shares of the information services provider's stock valued at $5,597,000 after purchasing an additional 4,939 shares in the last quarter.