"Umbrella" debuted on the US "Billboard" Hot 100 on the chart issue dated April 28, 2007, at number 91. The following week it climbed to number 72, and to number 63 in its third week. In its fourth, fifth and sixth week on the chart, it progressively ascended to numbers 52, 44 and 41. Prior to its physical release, "Umbrella" achieved the biggest debut in the six-year history of iTunes in the United States, breaking a record previously held by Shakira and Wyclef Jean's "Hips Don't Lie". Following its digital release, "Umbrella" soared to number one for the issue dated June 9, 2007, on its seventh week on the chart. It subsequently debuted atop the Hot Digital Songs chart, with first-week sales of over 277,000 units. The single became the highest digital debut in the United States since Nielsen SoundScan began tracking downloads in 2003, surpassing Justin Timberlake's "SexyBack" 250,000 sales record in 2006. The single's rise to the top of the Hot 100 marked Rihanna's second number one single following "SOS" (2006), which was also noted for its huge leap on the Hot 100 to the top spot based on digital sales alone. Significantly sustained by the strong airplay of the single and preventing American rap group Shop Boyz' "Party Like a Rockstar" from advancing on the chart, "Umbrella" spent seven consecutive weeks at the top of the chart. "Umbrella" eventually became the second best-performing single of 2007 on the Hot 100, only behind Beyoncé's hit single "Irreplaceable" which topped the chart for ten weeks total.