Rapper Kendrick Lamar held onto the top spot of the weekly U.S. Billboard 200 album chart last Wednesday, in a week that saw little change among the top-selling records.

Lamar's "To Pimp A Butterfly," his first chart-topping album, sold another 107,000 albums and 49,000 songs and was streamed online 17.9 million times, a cumulative sales total of 123,000 units — according to figures from Nielsen SoundScan.

The Billboard 200 chart tallies album sales, song sales (10 songs equal one album), and streaming activity (1,500 streams equal one album).

The soundtrack for Fox TV's hit hip-hop drama "Empire" held steady at No. 2 for the second week, selling 61,000 units, while the soundtrack to Universal Pictures' steamy film "Fifty Shades of Grey" climbed one spot to No. 3 with 54,000 units.