To The Moon

U.S. semiconductor and memory sectors saw a notable pullback on Tuesday.

$Philadelphia Semiconductor Index(SOX)$dropped 5%, with broad‑based declines across the sector. NVIDIA fell 2.3%; Super Micro Computer, TSMC and ASML slumped over 4%; Intel tumbled 6.6%. Memory chip stocks took an even harder hit: SanDisk ‑9%, SK Hynix ‑9.2%, Micron ‑7%, Western Digital ‑7.4%, Seagate ‑9.2%.

What triggered last night’s sharp sell‑off in semiconductors & memory

1. Surging U.S. Treasury Yields

Long‑dated Treasury yields kept climbing as markets priced out Federal Reserve rate‑cut expectations. The 30‑year U.S. Treasury yield broke above 5.31%, the 10‑year rose to 4.72%, and the 2‑year stood at 4.18%, steepening the yield curve.

A $25 billion 30‑year U.S. Treasury auction printed a winning bid yield of 5.22%, a high since 2001, signalling weaker demand for long‑term U.S. government debt. Higher Treasury yields weigh on high‑valuation growth tech names.

2. Rising geopolitical risks in the Middle East and higher oil prices

Earlier on the 18th, U.S. President Trump posted an image on social media calling the Strait of Hormuz “America’s new territory” and ordered negotiating teams to pause contacts with Iran. Uncertainty over Middle‑East tensions escalated.

Heightened geopolitical worries pushed global oil prices higher for the third straight trading session, raising risks of a rebound in inflation and potentially delaying Fed policy easing. Elevated oil prices further dampened market rate‑cut hopes.

3. Profit‑taking on high‑flying AI hardware names

Memory chips and semiconductor equipment had rallied hard in prior sessions, creating extremely crowded positioning. Once macro conditions deteriorated, investors rushed to lock in gains in AI‑hardware sub‑sectors with massive prior returns, sending these stocks far lower than the broader market.

$NVIDIA(NVDA)$ $Advanced Micro Devices(AMD)$ $Taiwan Semiconductor Manufacturing(TSM)$ $ASML Holding NV(ASML)$ $SanDisk Corp.(SNDK)$ $SK hynix(SKHY)$ $Micron Technology(MU)$ $Western Digital(WDC)$ $Seagate Technology PLC(STX)$