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Luke Kawa

US stocks rise; bonds surge on cooling labor market data


Another day, another small gain for US stocks as the S&P 500 closed up 0.2%, extending its winning streak to three.

More defensive sectors like real estate and consumer staples led the way higher on Tuesday, though Nvidia still chipped in with a 1.2% advance. Meanwhile, commodity-linked stocks bore the brunt of selling, with the materials sector down 1.1% and energy stocks falling 1%.

While US stocks have been subdued at the index level as of late, the bond market rally continues to be intense. The iShares 20+ Year Treasury Bond ETF gained 1.2%, its fourth straight daily gain. Data continue to point to a cooling in US economic activity: on the heels of yesterday’s disappointing manufacturing survey, April’s JOLTS report showed job openings fell by more than anticipated and are nearing pre-pandemic levels. Traders have gone from pricing in as little as 32 basis points of easing for 2024 last week to 46 basis points as of Tuesday.

Outside of the US, Indian stocks faced significant selling pressure, with the iShares MSCI India ETF off 6.1% after surprising early election results showed Prime Minister Modi’s party is unlikely to retain its majority. Companies seen as close to Modi fared particularly poorly.

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Samsung’s massive Q1 fails to lift Sandisk, other data center plays

Almost all memory stocks slipped Tuesday, despite getting a positive update on the massive flood of money pouring into the sector from the AI build-out, as the potential escalation of the US war with Iran Tuesday evening overshadowed Samsung’s blowout numbers.

Korean chip giant Samsung Electronics reported preliminary Q1 results showing operating profit up by 755% compared to Q1 2025, trouncing pretty elevated expectations for a gain of about 550%.

Samsung is the world’s largest producer of NAND and DRAM chips. Once considered low-value commodity inputs to tech products, NAND and DRAM prices have exploded over the last six months amid a hyperscaler scramble to secure chips that can manage the surfeit of data produced by AI.

The same dynamics have made memory plays like Sandisk, Western Digital, and Micron some of the best-performing stocks in the S&P 500 over the last 12 months.

But other than Seagate Technology Holdings, those stocks were down Tuesday as of 11:15 a.m. ET, as the surge in oil prices and ongoing war with Iran muted much of the AI data center trade excitement. Bellwethers like Nvidia and hyperscalers like Oracle and Meta were struggling early, as were data center input makers like Corning and Coherent, AI power plays like GE Vernova, Vertiv Holdings, and even hard-hat builders of the shells that house all those AI servers.

On the other hand, some so-called optical stocks — makers of fiber-optic connections that quickly shift data between users, hyperscalers, and all around data centers themselves — were up. Lumentum and Arista Networks, two popular optical stocks, were showing resilience.

Samsung is the world’s largest producer of NAND and DRAM chips. Once considered low-value commodity inputs to tech products, NAND and DRAM prices have exploded over the last six months amid a hyperscaler scramble to secure chips that can manage the surfeit of data produced by AI.

The same dynamics have made memory plays like Sandisk, Western Digital, and Micron some of the best-performing stocks in the S&P 500 over the last 12 months.

But other than Seagate Technology Holdings, those stocks were down Tuesday as of 11:15 a.m. ET, as the surge in oil prices and ongoing war with Iran muted much of the AI data center trade excitement. Bellwethers like Nvidia and hyperscalers like Oracle and Meta were struggling early, as were data center input makers like Corning and Coherent, AI power plays like GE Vernova, Vertiv Holdings, and even hard-hat builders of the shells that house all those AI servers.

On the other hand, some so-called optical stocks — makers of fiber-optic connections that quickly shift data between users, hyperscalers, and all around data centers themselves — were up. Lumentum and Arista Networks, two popular optical stocks, were showing resilience.

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