MRK Stock Up 5.2% after 5-Day Win Streak
Merck (MRK) stock hit day 5 of a continuous streak of days with gains, with cumulative gains over this period amounting to a 5.2% return. The company has gained about $11 Bil in value over the last 5 days, with its current market capitalization at about $211 Bil. The stock remains 13.8% below its value at the end of 2024. This compares with year-to-date returns of 9.6% for the S&P 500.
MRK provides pharmaceutical products for human health across multiple therapeutic areas and develops veterinary pharmaceuticals, vaccines, and health management solutions for animal health. After this rally, is MRK still a buy – or is it time to lock in gains? Deep dive with Buy or Sell MRK.
Comparing MRK Stock Returns With The S&P 500
The following table summarizes the return for MRK stock vs. the S&P 500 index over different periods, including the current streak:
| Return Period | MRK | S&P 500 |
|---|---|---|
| 1D | 0.0% | -0.0% |
| 5D (Current Streak) | 5.2% | 1.2% |
| 1M (21D) | 5.3% | 2.4% |
| 3M (63D) | 11.8% | 8.2% |
| YTD 2025 | -13.8% | 9.6% |
| 2024 | -6.3% | 23.3% |
| 2023 | 1.0% | 24.2% |
| 2022 | 49.4% | -19.4% |
What is the point? Momentum often precedes conviction. A multi-day win streak can signal growing investor confidence or spark follow-on buying. Tracking such trends can help you ride the strength, or prepare for a well-timed entry if momentum fades.
Gains and Losses Streaks: S&P 500 Constituents
There are currently 20 S&P constituents with 3 days or more of consecutive gains and 103 constituents with 3 days or more of consecutive losses.
| Consecutive Days | # of Gainers | # of Losers |
|---|---|---|
| 3D | 6 | 95 |
| 4D | 3 | 6 |
| 5D | 8 | 1 |
| 6D | 1 | 0 |
| 7D or more | 2 | 1 |
| Total >=3 D | 20 | 103 |
Key Financials for Merck (MRK)
Last 2 Fiscal Years:
| Metric | FY2023 | FY2024 |
|---|---|---|
| Revenues | $60.1 Bil | $64.2 Bil |
| Operating Income | $3.0 Bil | $20.2 Bil |
| Net Income | $365.0 Mil | $17.1 Bil |
Last 2 Fiscal Quarters:
| Metric | 2025 FQ1 | 2025 FQ2 |
|---|---|---|
| Revenues | $15.5 Bil | $15.8 Bil |
| Operating Income | $5.9 Bil | $5.6 Bil |
| Net Income | $5.1 Bil | $4.4 Bil |
While MRK stock looks attractive given its winning streak, investing in a single stock without detailed, thorough analysis can be risky. The Trefis High Quality (HQ) Portfolio, with a collection of 30 stocks, has a track record of comfortably outperforming its benchmark that includes all 3 – the S&P 500, S&P mid-cap, and Russell 2000 indices. Why is that? As a group, HQ Portfolio stocks provided better returns with less risk versus the benchmark index; less of a roller-coaster ride, as evident in HQ Portfolio performance metrics.