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Episode Description:
Foreign buying pushed KOSPI to 6,579 while corporate bond issuance hit a four-year low.
Semiconductor strength and record foreign inflows drove a third straight day of KOSPI gains, with Samsung Electronics and SK Hynix each up about 6%. Brokerages posted a record 10.26 trillion won first-half profit, even as major companies pull back from corporate bonds amid rising yields. We break down the drivers, the risks, and what to watch into tonight's U.S. CPI print.

Sources:
- KOSPI Closes at 6,579 on Foreign Buying Spree — Seoul Economic Daily, Aug 12, 2026
- Top 10 Brokerages Post Record 10 Trillion Won Half-Year Profit — Seoul Economic Daily, Aug 12, 2026
- Corporate Bond Issuance Hits Four-Year Low as Yields Rise — Seoul Economic Daily, Aug 12, 2026

About AI PRISM:
AI PRISM is Seoul Economic Daily's WAN-IFRA award-winning newsroom AI series, delivering Korean economic news adapted for global audiences. Episodes are produced with AI assistance and reviewed by a human editor.

Tags:
#KOSPI #KoreaStocks #Semiconductors #KoreaMarkets #AIPRISM #SeoulEconomicDaily #WANIFRA

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00:02You're listening to AI Prism from Seoul Economic Daily.
00:06Three numbers before the open.
00:09Kospi up 3.68 percent.
00:12Foreign investors buying 2.8 trillion won.
00:17And corporate bond issuance at a four-year low.
00:23Samsung Electronics and SK Hynix both jumped roughly 6 percent Wednesday.
00:30Top brokerages just posted their first-ever 10 trillion won half.
00:36And big companies are quietly skipping the bond market altogether.
00:42It's Thursday, August 13th.
00:45Here's what today's story could mean for the Korean market.
00:51Korean corporate bond yields have climbed from the 2 to 3 percent range last year
00:57to the mid-4 percent range this year, driven by Middle East-linked oil prices
01:03and a chip sector boom pushing up inflation expectations.
01:09At the same time, U.S. AI infrastructure spending news,
01:14from CoreWeave's earnings to Supermicro's order book,
01:19sent foreign money into Korean semiconductor stocks.
01:23That combination is splitting the market.
01:26Equities are rallying, while the corporate bond market is freezing up.
01:32Here's what the numbers show.
01:34The KOSPI closed at 6,579.04 on Wednesday,
01:42up 233.51 points, or 3.68 percent,
01:50a third straight day of gains.
01:54foreign investors bought 2.84 trillion won of shares,
02:00triggering the year's 23rd buy-side circuit breaker,
02:05while individual investors sold 3.19 trillion won to lock-in profits.
02:13Samsung Electronics rose 6.68 percent to 255,500 won,
02:22and SK Hynix gained 5.54 percent to 1.5 million won.
02:31Three-year AA-minus corporate bond yields hit 4.651 percent last month,
02:39the highest since November 2023, discouraging new debt sales.
02:45Top 10 brokerages posted a combined 10.26 trillion won in first-half net profit,
02:55up 129 percent year-on-year,
02:59led by Miree Assets' 2.9 trillion won,
03:04a record for any securities firm.
03:08Corporate bond issuance by major companies fell 32 percent this year
03:14to 29.2 trillion won,
03:18a four-year low,
03:20as firms like Samsung Biologics and Shinsege shelved planned bond sales.
03:28So what does this mean for your portfolio today?
03:32Earlier, we flagged three numbers before the open.
03:36Here's what that actually means for your positions.
03:40The rally is concentrated in semiconductors and brokerages,
03:46riding record trading volume.
03:48So watch whether that breadth holds beyond chips into cosmetics,
03:55defense, and power equipment,
03:57as some analysts are now flagging.
04:00Keep an eye on tonight's U.S. CPI print
04:04and this month's Bank of Korea meeting.
04:08Both could decide whether foreign buying continues
04:11or higher-for-longer rates pull money back out of stocks and bonds alike.
04:19What to watch?
04:20Tonight's U.S. July CPI release,
04:25which the market expects to show cooling headline and core inflation.
04:30This month's Bank of Korea rate decision,
04:34alongside the 2027 budget announcement,
04:38both flagged as bond market swing factors.
04:42And whether third-quarter brokerage earnings hold up,
04:46since July's average daily trading value fell to 36.9 trillion won,
04:54from May and June's 50 trillion won peaks.
05:00That's today's AI Prism,
05:02stock investors.
05:04This episode was produced with AI assistance,
05:08based on Seoul Economic Daily reporting,
05:12and reviewed by a human editor.
05:14AI Prism is a Juan IFRA award-winning series.
05:19We'll be back tomorrow.
05:21You've been listening to AI Prism from Seoul Economic Daily.
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