The Chicago Purchasing Managers Index, a closely watched gauge of manufacturing-sector health, showed a 15-month high score of 58.9 for August. That was enough to ignite buying, and the Nasdaq rose 10.4 points Friday to close at 1,810.45, a gain of 0.6% for the day and 2.6% for the week. Our InformationWeek 100 rose 1.35 points Friday to close at 278.71, a gain of 0.5% for the day and 3.4% for the week.
The Nasdaq-100 index tracking stock surpassed its 52-week high at one point on Friday, but closed at $33.34, just three cents short of the mark. The tracking stock gained a quarter of a cent since Thursday, closing up 0.76% for the day and 2.62% for the week.
The S&P 500 had a good run for the week, rising 5.19 points, to 1,008.01, a gain of 0.5% for the day and 1.5% for the week. The Dow Jones rose 41.61 points Friday, a gain of 0.4% for the day and 0.7% for the week.