📊 Weekly Market Scoreboard

Week ending May 22, 2026

🏢 Sector Heatmap

🔎 The Week That Was

Wall Street closed out the holiday-shortened week on a high note, with all four major indexes finishing in the green as of Friday's close. The S&P 500 added 0.95% to land at 7,473.47, but the real story was the Russell 2000 — small-caps ripped 3.39% to 2,869.23, a sign that risk appetite is broadening beyond mega-cap tech.

The sector rotation this week was genuinely interesting. Technology led all sectors with a 3.46% gain, which is expected — but Utilities came in a very close second at +3.21%, and Healthcare wasn't far behind at +2.86%. That's a strange mix. When tech and defensive sectors rally together, it often signals that investors are both chasing upside and hedging their bets at the same time.

On the losing end, Energy dropped 1.80%, Communication Services fell 1.30%, and Consumer Staples slid 1.28%. That last one is worth flagging — staples are supposed to be the safe harbor, but this week they got hit. Walmart's dramatic earnings-driven selloff was a big part of that story, and it raises real questions about whether the consumer spending narrative is starting to crack.

Markets are closed today for the weekend and will reopen Tuesday after the Memorial Day holiday Monday. That gives investors an extra day to digest a packed earnings calendar and a week of macro signals. The setup heading into Tuesday is cautiously constructive — but with Salesforce, Marvell, Snowflake, and Costco all reporting, there's plenty of potential for the mood to shift fast.

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🟢 Top 5 Winners

🔴 Top 5 Losers

📈 What Drove the Moves

The semiconductor trade absolutely dominated this week's winner board, and it wasn't subtle. Marvell Technology led the charge with a staggering 16.22% gain to $196.33, Super Micro Computer followed at +15.33% to $35.58, AMD jumped 11.05% to $467.51, Intel added 10.79% to $119.84, and Micron rounded out the top five with a 10.19% pop to $751.00. The common thread: AI infrastructure demand is showing no signs of letting up, and investors are rotating back into the hardware names that build the physical backbone of the AI boom. Marvell is especially worth watching — it reports earnings Tuesday, May 27, and that 16% pre-earnings move tells you the market is already pricing in something big.

On the other side of the ledger, Walmart's 9.80% drop to $120.27 was the week's most jarring move — and it dragged Consumer Staples down with it. Walmart executives departing amid a leadership reshuffle spooked investors who were already nervous about whether the retail giant can sustain its recent run. When the world's largest retailer loses nearly 10% in a week, it's not just a Walmart story — it's a signal worth taking seriously about consumer health and corporate stability heading into the back half of the year.

Elsewhere in the losers column, Unity Software fell 4.59% to $25.57, Atlassian dropped 4.49% to $85.42, and Uber slid 4.34% to $71.82. The Reddit news likely contributed to some of the software weakness — Meta launching a forum app is a direct shot at Reddit's ad-revenue model, and that 6% Reddit drop rippled into broader sentiment around consumer-facing platforms. When Meta moves into your lane, the market tends to reprice the competition quickly.

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📅 Earnings: Week Ahead

🔭 What to Watch This Week

This is a legitimately loaded earnings week, and it kicks off Tuesday with three reports that could move the market in a big way. Marvell Technology reports after already surging 16% this week — the bar is high, and any miss on AI-driven data center revenue guidance could give back those gains fast. The estimate is $0.61 EPS, but the real focus will be on forward guidance and whether Marvell can justify its newly elevated valuation. Salesforce also reports Tuesday with a $2.30 EPS estimate, and the market will be laser-focused on AI monetization — specifically whether Agentforce, its AI assistant platform, is translating into real revenue growth or still just a talking point.

Snowflake reports Tuesday as well, expecting a loss of $0.59 per share, and while the loss itself isn't alarming for a growth-stage cloud company, the product revenue growth rate and customer net revenue retention will be the metrics that matter. Snowflake has been rebuilding credibility since its 2024 stumbles, and a strong beat here could inject fresh momentum into the enterprise cloud trade. Zscaler opens the week Wednesday with a small expected loss of $0.04 — the cybersecurity name has been quietly solid, and any upside to billings guidance could bring buyers back into a sector that's been relatively quiet.

Then on Wednesday, Costco drops its number with a $4.91 EPS estimate — and after the stock fell 4.48% this week, the stakes feel higher than usual. Costco is typically the consumer's best friend in an uncertain economy, so if it disappoints anywhere near the way Walmart did, it would raise serious flags about discretionary spending. Coming off of Walmart's rough week, Wall Street will be reading every line of Costco's report for clues about where the American consumer actually stands right now.

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