In Asia, MSCI’s broadest index of Asia-Pacific shares outside Japan .MISX00000PUS dived 2.5%, with Japan’s Nikkei .N225 down 2.7% and South Korea's KOSPI .KS11 tumbling 5.7% to mark a fifth straight week of declines. Hong Kong's Hang Seng index .HSI fell 1.7%.
Global tech stocks took a hit after Alphabet GOOGL.O and Tesla TSLA.O, the first two of the so-called "Magnificent Seven" megacap tech companies to report this season, spooked investors as both burned through cash in their most recent quarter for their big spending on AI infrastructure.
"These companies are engaging in more capex and it effectively makes the mega-cap segment of the U.S. stock market more interest rate sensitive at a time where we see bond yields moving up, especially real yields," Pictet's Ramjee said.
In bond markets, the benchmark 10-year U.S. yield US10YT=RR hit an over 18-month high of 4.7135%, having climbed nearly 16 basis points this week. The yield on 30-year bonds was steady at 5.176%, not far from a 19-year peak of 5.201%.
Higher Treasury yields helped the U.S. dollar, with the dollar index =USD holding at 101.4 after having hit its highest so far this month on Thursday.
The yen JPY=EBS was pinned near 40-year lows at 163.79 per dollar, drawing a warning from the U.S. Treasury that excess volatility in the currency was undesirable.
Japan's finance minister has repeatedly issued verbal warnings about a possible intervention in the currency market, after carrying out yen-buying operations in April and May. This has been to little avail, given the yen has weakened well beyond the 160 level that market participants previously viewed as a possible catalyst for official buying.
Precious metals were steady in choppy trading, with gold XAU= flat at $4,046 an ounce after falling 2% the day before, while silver XAG= ticked 0.7% higher after a decline of 3.4% on Thursday.