said same-store sales rose a better-than-expected 4.5% in October while net sales jumped 11.8% to $19.07 billion.
The gain in comparable sales was above analysts' consensus estimates of 4.3%, and came in near the high end of the company's 3%-5% range.
Wal-Mart's expanding international unit led growth, with sales of $3.71 billion, a 17.6% increase from $3.16 billion a year ago.
For November, the company is forecasting sales growth of 3% to 5%.
Sales at the company's Sam's Club unit rose 9.7% to $2.64 billion.
Wal-Mart shares closed at $57.92 on Wednesday, below their 52-week high of $60.20 reached in early September.