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US Pre-Market: Brent Jumps 6.96% to US$89.94, Korea's KOSPI Falls 5.98% Before the Fed

Crude spiked overnight, Seoul hit a second circuit breaker, and S&P 500 futures held flat into a 2:00pm ET Federal Reserve decision.

Mixed3 min readBy Swingfolio Research

At a glance

S&P 5007,429+0.21%
NASDAQ24,877-0.22%
Dow52,747+1.03%
VIX18.82+3.36%
Russell 20002,954+0.20%
US Dollar101.46+0.04%
US 10Y4.64+0.76%
ES_F7,463-0.04%
NQ_F27,896-0.09%

Top gainers

  • STX.USSeagate Technology+4.91%
  • FANG.USDiamondback Energy+4.51%
  • OXY.USOccidental Petroleum+2.91%
  • VLO.USValero Energy+2.70%
  • COP.USConocoPhillips+2.53%

Top losers

  • VRT.USVertiv Holdings-12.23%
  • KLAC.USKLA Corporation-8.98%
  • LRCX.USLam Research-3.12%
  • AAL.USAmerican Airlines-3.12%
  • AMAT.USApplied Materials-3.05%

US Pre-Market: Brent Jumps 6.96% to US$89.94, Korea's KOSPI Falls 5.98% Before the Fed

Sentiment: mixed S&P 500 futures: -0.04%

Brent crude jumped 6.96% to US$89.94 a barrel overnight on tightening physical supply and Strait of Hormuz shipping disruption, lifting US oil producers before the open on 29 July 2026. Vertiv VRT.US fell 12.23% pre-market after second-quarter revenue of $3.274 billion missed consensus by roughly $137 million. S&P 500 futures sat at 7,462.50, down 0.04%, flat into a Federal Reserve decision due at 2:00pm ET.

Overnight drivers

  • Crude: Brent +6.96% to US$89.94, WTI +6.59% to US$84.48. Oil producers led the pre-market bid: FANG.US +4.51%, OXY.US +2.91%, VLO.US +2.70%, COP.US +2.53%, XOM.US +2.36%, CVX.US +2.10%. Airlines fell: AAL.US -3.12%, DAL.US -2.32%, UAL.US -2.26%.
  • Korea: KOSPI -5.98% to 5,663.24 from 6,023.66, triggering a circuit breaker for a second straight session and taking the two-day fall to about 16%. SK Hynix operating profit rose sixfold to a record 60.5 trillion won and still missed analyst forecasts.
  • Fed: US 10-year yield 4.64%, up 0.76%, with the dollar index at 101.46. CME FedWatch put roughly 62% to 64% on a hold at 3.50% to 3.75%, and about 36% on a hike to 3.75% to 4.00%. No dot plot at this meeting.
  • Gold: US$4,074.80, down 0.58%, falling while crude spiked. That combination fits an oil supply shock more than a defensive bid.

Overnight Wall Street (Tuesday 28 July close)

  • S&P 500: 7,428.78 (+0.21%)
  • Nasdaq Composite: 24,876.91 (-0.22%)
  • Dow: 52,747.32 (+1.03%)
  • VIX: 18.82 (+3.36%)
  • Russell 2000: 2,953.80 (+0.20%)

The 1.25 percentage point gap between the Dow and the Nasdaq came from a rotation out of semiconductors. SNDK.US fell 14.25%, MU.US 8.85%, AMD.US 8.15%, ARM.US 8.11% and AMAT.US 7.82%, while IBM.US rose 5.21% and added Dow index points.

Overnight Asia and Europe

  • KOSPI: 5,663.24 (-5.98%)
  • Nikkei 225: 61,434.19 (-1.49%)
  • Hang Seng: 25,807.92 (+1.96%)
  • STOXX 600: 645.36 (-0.24%)
  • DAX: 25,475.54 (+0.05%)
  • FTSE 100: 10,880.35 (+0.09%)

Hong Kong closed 1.96% higher while Seoul and Tokyo fell. Europe opened near unchanged, with the STOXX 600 off 0.24% and the DAX up 0.05%.

Pre-market movers

TickerMoveReason
STX.US+4.91%Q4 revenue +48.5% to $3.63bn, Q1 guide 8.7% above consensus
FANG.US+4.51%Crude +6.96%
OXY.US+2.91%Crude +6.96%
WDC.US+2.44%AI storage demand, follows STX.US
VRT.US-12.23%Q2 revenue $3.274bn missed consensus by ~$137m
KLAC.US-8.98%Fell despite Q4 results and guidance topping estimates
LRCX.US-3.12%Semicap selling after KLAC.US
AAL.US-3.12%Fuel cost on crude +6.96%
AMAT.US-3.05%Semicap selling after KLAC.US
PG.US-2.64%Q4 EPS $1.48 beat the $1.42 consensus

US economic calendar today (ET)

  • 10:30am: EIA weekly petroleum status report, the first official inventory print since the crude move
  • 2:00pm: Federal Reserve rate decision, no dot plot
  • 2:30pm: Chair Warsh press conference
  • After the close: MSFT.US and META.US report, with QCOM.US the same evening
  • Thursday 8:30am: advance second-quarter GDP and the PCE price index

What to watch

  • Storage separated from semicap overnight. STX.US +4.91% and WDC.US +2.44% moved against AMAT.US -3.05% and LRCX.US -3.12%, so the AI trade is splitting rather than unwinding as one.
  • NVDA.US closed Tuesday +0.25% while SNDK.US fell 14.25% and MU.US 8.85%, leaving the largest semiconductor weight outside the selling.
  • Brent at US$89.94 sits 6.96% above Tuesday's settle and follows a 16% three-session decline, so the spike recovers ground already lost.

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Disclaimer

This briefing provides market observations and general information only. It is not personal financial advice and does not take into account your objectives, situation or needs. Past performance is not a reliable indicator of future performance. Consider seeking independent advice before acting on any information presented here.

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