Trading Day: All Warshed up 

By Jamie McGeever

ORLANDO, Florida, July 29 (Reuters) - U.S. shares tumbled ‌and long-dated Treasury yields surged ​to multi-decade peaks ​on Wednesday after the Federal Reserve kept interest rates on hold, while earlier, the rout in South Korean stocks snowballed to historic proportions after chipmaker SK Hynix released its results.

In my column today, I look at the chip selloff and other signs that the AI frenzy may be ‌souring. Could a tech bubble burst result in a 2000- or 2008-style crash? Maybe, but probably not.

If you have more time ⁠to read, here are a few articles I recommend to help you make sense of what happened in markets today.

1. Fed holds rates steady; three policymakers dissent in favor of a hike

2. OpenAI's Sam Altman ‌discusses rogue agent and new AI models with ‌U.S. senators

3. Magnificent 7 results set to test broadening U.S. stock market

4. South Korea $2 trillion stock rout breaks records as SK Hynix results disappoint

5. Japan PM's political doom loop worsens her fight with markets

Today's Key Market Moves

• STOCKS: South Korea -7%, now -33% in July for worst month ever. Nasdaq -1.7%, now in correction territory; Dow -2%, ​S&P 500 -1.5%.

• SECTORS/SHARES: Eight sectors on the S&P 500 fall, three rise. "SOX" chip index -5.3% to 3-month low. Industrials -3.5%, tech -2.5%, energy +2%. Microsoft up as much as 4% after Q2 results, Meta down as much as 8%. Qualcomm -9%.

• FX: Dollar slides 0.5% after Fed, NOK jumps again on oil surge.

• BONDS: U.S. yield curve bear steepens ⁠sharply. 2-year yield dips, 30-year yield leaps 12 bps above 5.2%.

• COMMODITIES/METALS: Oil up 7-8%.

Today's Talking Points

* Fed-speak

In what Goldman Sachs had said was shaping up to be the most uncertain policy meeting in almost 30 years, ​the Fed on Wednesday decided to keep rates on hold. Three of the 12-strong voting committee dissented for a hike. Does this suggest a September hike is now a given? Not really.

Fed Chair Kevin Warsh said the discussion with colleagues was the "good ​family fight" he had been hoping for. This suggests more than three officials might vote to ‌hike in September. But rate futures are only indicating a 55% chance of that, down from 75% immediately after today's decision, and long bond prices plunged after Warsh's press conference. A lack of faith in the Fed's commitment to 2%?

• Leverage

The collapse in South ⁠Korean stocks, especially the chip sector, has fueled concern over leverage. Authorities there are scrambling to mop up and minimize volatility, rolling out new rules and regulations surrounding single-stock ETFs and retail investors in particular.

The rout has spread to U.S. chips, with the Philadelphia SE semiconductor index down nearly 30% from its June 22 peak. The index is on for its worst month since ⁠the early 2000s. What about leverage in the U.S.? Strategists at JPMorgan estimate that deleveraging in the tech and semiconductor space has advanced faster than they had anticipated. "As a result, we now ​see more limited room for any further deleveraging."

• London calling

After the Fed, it's over to the Bank of England and its latest policy decision on Thursday. The MPC is expected to keep the base rate on hold at 3.75% in another 7-2 vote. Rates futures are putting an outside 10% chance on a hike.

UK inflation surprised to the downside in June, but markets ‌still expect the BoE to raise rates in the coming months — 25 bps by the end of the year, and another 25 bps by March. Long-dated gilt yields are near their highest levels since the 1990s. With a new PM in place ‌and fiscal worries running strong, failure from the BoE to meet the market's hiking expectations could soon push these long yields through 6%.

What could move markets tomorrow?

• South Korea's Samsung earnings (Q2)

• Bank ⁠of England interest rate decision

• U.S. GDP (Q2, advance)

• U.S. PCE inflation (June)

• ‌U.S. earnings, including Apple and Amazon

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Opinions expressed are those of the author. They do not reflect the views of Reuters News, which, under the Trust Principles, is committed to integrity, independence, and freedom from bias.

(Reporting by Jamie McGeever; Editing ‌by Nia Williams)

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