ThinkMarkets

Tech stocks just had one of their worst sessions in weeks, and the ripple effect went global.

It started overnight in South Korea, where Samsung and SK Hynix both crashed more than 12%, dragging the KOSPI index down 10% in a single session. By the time European markets opened, chip stocks there were already falling. By Wall Street's close, the Nasdaq had dropped 2.21% and the S&P 500 was down 1.44%.

The biggest single-day losers in the US included Micron Technology, down nearly 13%, Nvidia, down 4.2%, and Taiwan Semiconductor, down more than 5%.

At the heart of the selloff: growing doubt about whether the enormous amounts of money being poured into AI infrastructure can deliver returns that justify current stock prices. Add in a Fed that is increasingly expected to raise interest rates this year, and conditions are not easy for high-multiple tech names.

Micron reports earnings today. For traders watching the NAS100 and SPX500, that result is shaping up to be a major near-term catalyst.

🔗https://go.thinkmarkets.com/4vrITcN

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📰 NEWS!

🔄 The Nasdaq-100 rebalance goes live before the US open today: five additions (ALAB, CRWV, NBIS, RKLB, TER) and five removals (CHTR, CTSH, INSM, VRSK, ZS), with the index tracked by over $800 billion in index-linked assets globally.

🚀 The additions tilt the index toward AI infrastructure and space-tech, with index inclusion typically prompting buying from funds tracking the benchmark. The strongest gainers rose 9–11% on announcement day.

🌏 HK50, HSTECH and China H Shares may see adjusted session times today, which can affect fills and liquidity through the Asia tape. Check platform session hours before trading.

📈 Last week's central bank super-week passed without a Fed hike, leaving Wall Street's tone constructive into a flow-driven Monday.



📅 KEY EVENTS THIS WEEK

🇪🇺 Tue: Eurozone Flash PMIs – 08:00 GMT

🇬🇧 Tue: UK Flash PMIs – 08:30 GMT

🇺🇸 Tue: US Flash PMIs – 13:45 GMT

🇺🇸 Thu: US Q1 GDP (final) – 12:30 GMT

🇺🇸 Thu: US Core PCE (May) – 12:30 GMT

👀 Which 2026 IPO are YOU most excited about?

SpaceX? OpenAI? Anthropic? This year is shaping up to be one of the biggest for market debuts in years, and our new IPO Hub has the full picture.

Expected dates, reported valuations and live countdowns, all in one place and updated as new information emerges. Check it out 👇

📖 https://go.thinkmarkets.com/upcomingIPOs

The date is fixed. The outcome isn't. 📅

On 22 June, the Nasdaq-100 adds five companies and removes five. That might sound routine. It isn't.

More than 200 funds and over US$800 billion track this index. When the benchmark changes, passive funds have to trade to keep up, and that trading concentrates into the closing auction on the effective date. The effect can reach shares, ETFs, futures, options and index CFDs through higher volume, wider spreads and short-term volatility.

Joining on 22 June: Astera Labs, CoreWeave, Nebius Group, Rocket Lab, Teradyne
Leaving: Charter, Cognizant, Insmed, Verisk, Zscaler

We've put together a full guide covering what actually happens, what you can monitor, and the risks of trading around the date.

Read it here 👇
https://go.thinkmarkets.com/4xzDulx