Smurfit WestRock Stock: 8 Straight Red Days, Down 11%
Smurfit WestRock (SW) stock is on an 8-day losing streak, down 11.0% since the run began. That erased about $2.7 billion from the company’s market value, which now stands at about $21.6 billion. The stock closed at $41.29 on Wednesday, October 7, 18.7% below its 52-week high of $50.79 and 29.7% above its low of $31.85.
How The Streak Stacks Up Against The S&P 500
Returns for SW and the S&P 500 over the streak and the periods around it, all ending Wednesday, October 7 and including dividends:
| Return Period | SW | S&P 500 |
|---|---|---|
| 1 Day | -2.6% | -0.2% |
| 8 Days (Current Streak) | -11.0% | 0.8% |
| 1 Month (21 Trading Days) | -6.7% | 1.8% |
| 3 Months (63 Trading Days) | -3.1% | 3.7% |
| Year To Date | 9.9% | 15.0% |
| 1 Year (252 Trading Days) | 6.8% | 17.1% |
How The Streak Compares With The Market
Over the same 8 trading days, the S&P 500 returned +0.8% including dividends, so the slide is mostly Smurfit WestRock’s own story rather than the market’s. 1 other S&P 500 stock is currently on losing streaks of 8 days or longer. Over the past three months the stock is down 3.1%, a window that includes the streak; over the other 55 sessions of that window it was up 8.9%.
Is The Business As Weak As The Stock?
On the fundamentals, revenue grew 1.7% over the last twelve months, against a median of 6.9% for S&P 500 Materials stocks; its operating margin is 5.8%, versus a median of 13.4%; and the stock trades at 43.5 times trailing earnings against a median of 20.2. The read is mixed.
A slide like this raises an obvious follow-up: which marked-down stocks are actually worth buying? Our Buy the Dip screen runs that test every day, flagging beaten-down names whose fundamentals still hold up.
Prefer the theme to the single name? A materials ETF like XLB holds the whole group, not just this stock. It is still a concentrated bet on one theme, which is the gap the portfolio below is built to close.
A Slide Like This Is Why Diversification Exists
Watching one stock fall day after day is the clearest lesson the market teaches about single-name risk. Whether this particular decline is an opportunity or a warning, the deeper point is the same: no one name should be able to do this to your portfolio.
The Trefis High Quality (HQ) Portfolio is built on that principle: roughly 30 businesses selected for consistent cash generation, strong margins, and resilient balance sheets, sized and rebalanced with rules. It has a track record of outpacing a benchmark that combines the S&P 500, the S&P MidCap 400, and the Russell 2000. Study the slide; spread the risk.