00:02You're listening to AI Prism from Seoul Economic Daily.
00:30A quiet structural shift is reshaping the index you're already benchmarked against.
00:36Semiconductor weight in the Russell 1000 Growth Index jumped from 24% to 33.1% this year, while the
00:44magnificent seven shares shrank.
00:46Here's what both mean for your Korea exposure.
00:50It's Tuesday, September 29th.
00:52Here's why global investors are paying attention to Korea today.
00:56Korea's currency and bond markets absorbed a full holiday week's worth of U.S. rate moves in a single trading
01:03session on Monday.
01:04U.S. Treasury yields across the 5-, 10-, and 30-year curve hit their highest levels since 2007,
01:13driven by Fed hawkishness, Middle East inflation risk, and weak bond auctions.
01:18Foreign investors responded by selling Korean equities and futures, pushing local yields and the won higher in tandem.
01:26Here's what the numbers show.
01:28The won weakened to 1,365.10 per dollar on Monday, up 7.6 won on the day, after touching
01:38an intraday high of 1,365.50.
01:42Korea's three-year Treasury yield closed at 4.119%, its highest level since November 2022, while the 10-year rose
01:52to 4.539%.
01:54U.S. 10-year Treasury yields topped 5.16%, the highest since June 2007, and the 30-year hit 5
02:04.49%, the highest since 2004.
02:07Foreign investors net sold 3.24 trillion won, or about $2.4 billion, in Korean equities on Monday, while institutions
02:18sold another 1.02 trillion won.
02:21The FTSE Russell's June rebalancing raised semiconductor and equipment weight in the Russell 1000 growth index from 24% to
02:3133.1%,
02:32while Magnificent 7 weight fell from 52.8% to 43.1% as memory stocks moved from the value
02:41index to growth.
02:43Samsung Electromechanics is investing 6.78 trillion won, or about $4.9 billion, in Korea and Vietnam to expand AI
02:54substrate capacity,
02:55with analysts projecting 2.3 times higher third-quarter profit.
02:59Nuclear-linked builder Daewoo E&C jumped 7.05% Monday, and its shares have risen roughly five-fold since
03:09the start of the year on rising odds of a U.S. reactor deal.
03:13So what does this mean for global investors positioning in Korea?
03:17Earlier, we said two things were moving at once, a rates-in-wons shock and a passive index reshuffle.
03:25And together, they raised the cost of staying underweight Korean semiconductors, even as near-term volatility rises.
03:33If you're benchmarked to Russell or a similar growth index, your semiconductor exposure just rose whether you chose it or
03:40not.
03:40So check your active weight against that new 33.1% baseline before assuming you're neutral.
03:48Watch three things.
03:49Whether U.S. Treasury yields keep climbing past October's FOMC,
03:54how far Korea's new finance minister in the Bank of Korea actually align on rate policy,
04:01and whether the reported U.S.-Korea deal covering eight new reactors gets confirmed in the upcoming bilateral investment agreement.
04:08That's today's AI Prism, Global Investors.
04:12This episode was produced with AI assistance based on Seoul Economic Daily reporting and reviewed by a human editor.
04:21AI Prism is a Juan Ifra Award-winning series.
04:24We'll be back tomorrow.
04:26You've been listening to AI Prism from Seoul Economic Daily.
