Arm Holdings and Advanced Micro Devices powered a sweeping advance in artificial intelligence equities on Monday after President Donald Trump declared a U.S.-Iran peace agreement complete, a deal set to reopen the Strait of Hormuz and ease global energy supply concerns. The Philadelphia Semiconductor Index climbed 5.4%, the Nasdaq Composite added 3.1%, and the S&P 500 rose 1.7% to close at 7,554, a fresh record.
Today's biggest movers
| Ticker | Close | Day | 1mo | YTD |
|---|---|---|---|---|
| $ARM | $412.55 | +8.33% | +97.24% | +259.58% |
| $AMD | $547.26 | +6.98% | +29.04% | +144.89% |
| $LRCX | $388.92 | +6.03% | +36.60% | +110.16% |
| $PLTR | $134.71 | +5.25% | +0.54% | -19.75% |
| $META | $593.48 | +4.67% | -3.38% | -8.75% |
| $ORCL | $192.64 | +4.62% | -0.16% | -1.57% |
| $TSM | $441.40 | +4.12% | +9.16% | +38.11% |
| $NVDA | $212.45 | +3.54% | -5.71% | +12.50% |
| $SNOW | $240.78 | +3.44% | +52.91% | +11.11% |
| $CRM | $164.55 | -0.81% | -5.16% | -35.12% |
ARM jumps 8.3% as analyst upgrades pile in after record fiscal year
Arm Holdings PLC (NASDAQ: ARM) surged 8.3% to $412.55, the sharpest single-session gain in our coverage universe and the stock's largest one-day advance since January. The move caps a 97% one-month run and leaves ARM up 260% year to date, extending a multi-year re-rating driven by its royalty exposure to AI inference chips in data centers. Multiple price-target increases preceded Monday's session: Mizuho raised its target to $425 from $360, Barclays to $360 from $250, and KeyBanc to $300 from $170. The upgrades followed ARM's record Q4 fiscal 2026 quarter, in which revenue rose 20% year on year to $1.49 billion, licensing revenue grew 29% to $819 million, and data center royalties more than doubled. Chief Executive Rene Haas told analysts the company's $15 billion in-house chip revenue target could be reached ahead of schedule, citing overwhelming demand from hyperscalers deploying ARM AGI processors in next-generation AI server racks. For context on the two-session build into today, see last Thursday's recap of the agentic CPU upgrade cycle.
AMD gains 7.0% on Citi upgrade citing Meta as undiscounted GPU customer
Advanced Micro Devices Inc. (NASDAQ: AMD) gained 7.0% to $547.26, extending its 2026 year-to-date advance to 145%. Citi analyst Atif Malik upgraded AMD to Buy from Neutral and raised his price target to $575 from $460, pushing his 2026-2028 earnings estimates 12%-13% above Wall Street consensus. Malik's central argument is that Meta Platforms will be a materially larger buyer of AMD's MI-series AI graphics processors than the market is pricing in, a view he said is supported by supply-chain checks. AMD's first-quarter 2026 revenue climbed 38% year on year, driven by its data center division, and the company is next scheduled to report in late July. The stock's intraday high of $558.37 briefly cleared the Citi target before a partial afternoon pullback.
Lam Research rises 6.0% as chip equipment cycle draws fresh price targets
Lam Research Corp. (NASDAQ: LRCX) gained 6.0% to $388.92 as chip equipment stocks caught up with the semiconductor surge. Oppenheimer raised its price target to $400 from $330, and Barclays lifted its target to $335 from $275 in a note issued last Wednesday. Both firms cited the March 2026 quarter, which delivered record revenue and record earnings per share, underpinned by NAND recovery and high-bandwidth memory capacity additions. Lam's June quarter guidance, issued last month, calls for further sequential growth, and Monday's session positioned the stock above Oppenheimer's new target for the first time. The broader chip-equipment complex was lifted by the same Strait of Hormuz tailwind: AMAT added 3.3% and ASML gained 1.6%. For the original BofA upgrade context, see last Wednesday's chip equipment recap.
Palantir adds 5.3% as geopolitical relief lifts defense-adjacent AI names
Palantir Technologies Inc. (NYSE: PLTR) advanced 5.3% to $134.71. The Strait of Hormuz deal was a direct tailwind: Treasury yields fell sharply on the geopolitical relief, and defense-adjacent data analytics companies with government contract exposure rallied alongside energy names. Palantir reported first-quarter 2026 revenue of $1.6 billion, up 85% year on year, and raised its full-year guidance at that result. Despite today's bounce the stock remains down nearly 20% year to date, weighed by the February growth-multiple reset; the current price sits well below the analyst consensus target of approximately $193.