U.S. semiconductor shares climbed Monday morning, Nov. 9, with the Philadelphia Semiconductor Index up 5% and five chipmakers posting gains of at least 5.5% in early trading.
At 10:15 a.m. ET (15:15 UTC), AMD and Marvell Technology had each gained more than 8%. Micron Technology was up 5.5%, Arm had risen more than 6%, and Broadcom was 7.6% higher.
The Monday figures are intraday readings. They capture the index and the five shares at the same point in the U.S. trading session, rather than their closing results.
The gains followed a sharp swing in chip shares late last week. The semiconductor index was up 6.8% Friday morning after falling 11.48% Thursday. Friday morning’s advance was smaller than the previous day’s decline.
At that Friday morning reading, the chip index’s gain exceeded a 2% rise in the Nasdaq and a 1.1% increase in the S&P 500. Monday’s figures show another morning of gains for the named chipmakers, but do not establish where the index or shares will close.


