The U.S. stock market saw some dramatic moves past week with five stocks posting the largest weekly gains and drops (Mon-Fri Nov 3 -Nov 7, 2025). For each, we highlight the drivers of the move and year-to-date (YTD) performance.

To track momentum in real time, you can use FMP's Top Traded Stocks API to see the most actively traded names. With your FMP API key, the Investor Dashboard provides a comprehensive view with deeper context - insider trades, stock price targets, revenue segmentation, and EPS trends.

Top 5 Weekly Gainers/Losers

Expedia (EXPE) — Top Gainer (+17.79% this week)

Shares ripped after a blowout Q3: revenue and EPS topped estimates, gross bookings rose 12% YoY to $30.7B, and management raised full-year guidance. The beat-and-raise, plus messaging that Expedia is leaning into AI across its brands, drove a ~18% surge Friday that sealed the week's near-18% climb to a record close.

Qualys (QLYS) — Gainer (+21.48% this week)

Cybersecurity name Qualys jumped after Q3 EPS beat by ~19% and revenue grew ~10% YoY, with record margins and upbeat outlook commentary. Investors cheered signs of momentum in platform bundling and channel contributions, propelling the stock ~20% higher on the week.

Akamai (AKAM) — Gainer (+11.43% this week)

Akamai rallied as Q3 revenue, EPS and cash flow beat, while Cloud Infrastructure Services grew ~39% YoY and the company highlighted AI/edge initiatives. Fresh FY guidance and solid segment detail helped flip sentiment, sending shares up double-digits for the week.

Celsius (CELH) — Loser (−28.93% this week)

Despite triple-digit revenue growth, shares sank as investors focused on a one-time $247M distributor-transition charge tied to Alani Nu and near-term disruption risks in PepsiCo's distribution shift. The combination of accounting noise, timing uncertainty, and hot expectations triggered a ~30% weekly slide.

Palantir (PLTR) — Loser (−12.89% this week)

Palantir hit an all-time high on Monday, then slid after earnings amid valuation concerns and headline pressure from a prominent short disclosure. Even with strong reported growth, the reset in multiples and profit-taking drove a mid-teens weekly decline.

Track Market Liquidity in Real Time with FMP's Top Traded Stocks API

The Top Traded Stocks API shows which tickers are commanding the most attention right now—a handy complement to weekly performance:

• Most Active Lists: Instantly see the highest-volume stocks across major U.S. exchanges (or filter by NASDAQ/NYSE).
• Real-Time Volume + Price Metrics: Monitor volume, price change, and % change to gauge momentum and liquidity.
• Company Snapshot: Pull names, symbols, and trading volume for quick context.

Example use case: A day trader scans NASDAQ via the Top Traded Stocks API and spots iSun (ISUN) printing unusually high volume. With real-time volume and price-change data in hand, they can decide whether the momentum fits their setup before entering a trade.