Thursday's trading session ended with U.S. markets going their separate ways. The Dow Jones Industrial Average climbed 1.3% to 48,704.01, the S&P 500 inched up a modest 0.2% to 6,901, while the tech-heavy Nasdaq slipped 0.26% to 23,593.85. But the real action happened after the closing bell, where several stocks made significant moves on earnings reports and corporate news.

Here's what caught the attention of retail traders and investors throughout the day.

Broadcom's AI Chip Momentum Continues

Broadcom Inc. (AVGO) closed at $406.37, down 1.60%, trading within a range of $394.19 to $409.30 during regular hours. The stock's 52-week range sits between $138.10 and $414.61. After hours, shares fell another 4.5% to $388.06.

The semiconductor giant delivered impressive fourth-quarter results, beating estimates with revenue of $18.02 billion and adjusted earnings of $1.95 per share. The headline number? AI semiconductor revenue surged 74% year-over-year, pushing total revenue up 28%. Broadcom also issued upbeat first-quarter guidance, projecting roughly $19.1 billion in revenue and forecasting that AI chip sales will double.

Despite the strong performance and optimistic outlook, the market's after-hours reaction suggests investors may have been expecting even more, or perhaps they're taking profits after a substantial run-up.

Lululemon's Leadership Transition Amid Strong Results

Lululemon Athletica Inc. (LULU) finished the regular session at $187.01, down just 0.33%, with an intraday high of $188.50 and a low of $182.04. The stock's 52-week range spans from $159.25 to $423.32. But the real story came after the bell, when shares jumped 10.5% to $206.65.

The athletic apparel retailer beat quarterly expectations with earnings per share of $2.59 and sales of $2.57 billion. But that wasn't the only news: longtime CEO Calvin McDonald will step down in early 2026, with the CFO and CCO stepping in as interim leaders during the transition.

International growth remained strong for Lululemon, helping offset weakness in the Americas. The board also authorized an additional $1 billion for stock buybacks, and management raised full-year EPS and revenue guidance following the solid quarter. The market clearly liked what it saw, sending shares significantly higher despite the upcoming leadership change.

Costco's Membership Model Keeps Delivering

Costco Wholesale Corp. (COST) rose 1.15% to close at $884.48, with an intraday high of $886 and a low of $872.55. The stock's 52-week range stands between $871.14 and $1,078.23.

The warehouse retailer reported first-quarter revenue of $67.31 billion, slightly above expectations, while adjusted earnings reached $4.50 per share. Net sales rose 8.2% year-over-year and comparable sales increased 6.4%, with gains across the U.S., Canada, and international markets.

The real beauty of Costco's business model showed in the membership fee revenue, which climbed to $1.33 billion compared to $1.17 billion a year earlier. The company ended the quarter with $16.22 billion in cash and continued operating 923 warehouses worldwide. Steady, predictable, and profitable—that's the Costco formula.

RH Defies Logic With After-Hours Surge

RH (RH) shares fell 2.38% during regular trading to $153.31, with a high of $162 and a low of $151.71. The stock's 52-week range stretches from $123.03 to $457.26. In after-hours trading, shares rose 4.36% to $160.

The luxury home furnishings retailer reported mixed third-quarter results. Earnings fell short at $1.71 per share, though revenue of $883.81 million came in slightly above expectations. Sales rose 9% year-over-year and 18% on a two-year basis, even as CEO management noted continued pressure from a historically weak housing market and tariff impacts.

RH guided for softer fourth-quarter revenue between $869.27 million and $877.4 million, below what analysts had been forecasting. Yet despite the miss on earnings and weaker guidance, shares still jumped nearly 10% in after-hours trading. Sometimes the market works in mysterious ways, or perhaps investors are looking past near-term challenges to the company's longer-term positioning.

Tilray Lights Up With New Product Launch

Tilray Inc. (TLRY) climbed 2.06% to close at $8.43, with a high of $8.59 and a low of $8.08. The stock's 52-week range sits between $3.51 and $23.20. After hours, the stock spiked an impressive 31.2% to $11.06.

What drove the enthusiasm? Tilray Brands launched Redecan's first live-resin liquid diamond vape line in Canada, introducing 1g Amped 510 cartridges in Space Age CK and Blueberry DNTS varieties. The products use an 80% Legit Live Resin and 20% Liquid Diamonds formulation designed to preserve full-spectrum cannabinoids and strain-specific terpenes while boosting intensity.

Redecan also upgraded the hardware with a medical-grade ceramic core and wide-body airflow design to deliver smoother draws and reduce clogging. The vapes are now available in Ontario and Alberta, with a national rollout planned for early 2026. The market's enthusiastic response suggests investors see significant potential in this premium product line.

Thursday proved once again that earnings season can deliver surprises in both directions, with after-hours trading often telling a different story than the regular session. From AI chip momentum to athletic wear transitions to cannabis innovation, these five stocks gave traders plenty to think about heading into Friday's session.