A 7-Day Winning Streak Has Revvity Stock Up 9.6%
Shares of Revvity (RVTY) have closed higher in each of the last 7 sessions, a cumulative gain of 9.6%. That added about $1.6 billion to the company’s market value, which now stands at about $18.4 billion. The stock closed at $165.33 on Wednesday, October 28, its highest close of the past year.

How The Streak Stacks Up Against The S&P 500
Returns for RVTY and the S&P 500 over the streak and the periods around it, all ending Wednesday, October 28 and including dividends:
| Return Period | RVTY | S&P 500 |
|---|---|---|
| 1 Day | 2.1% | 0.3% |
| 7 Days (Current Streak) | 9.6% | 0.7% |
| 1 Month (21 Trading Days) | 8.3% | 1.0% |
| 3 Months (63 Trading Days) | 45.7% | 4.4% |
| Year To Date | 71.3% | 14.2% |
| 1 Year (252 Trading Days) | 70.6% | 14.0% |
Is This Move About Revvity Or The Market?
Over the same 7 trading days, the S&P 500 returned +0.7% including dividends, so the run is mostly Revvity’s own story rather than the market’s. 2 other S&P 500 stocks are currently on winning streaks of 7 days or longer. Over the past three months the stock is up 45.7%, a window that includes the streak; over the other 56 sessions of that window it was up 32.9%.
Do The Fundamentals Support The Run?
On the fundamentals, revenue grew 4.1% over the last twelve months, against a median of 7.9% for S&P 500 Health Care stocks; its operating margin is 12.3%, versus a median of 17.6%; and the stock trades at 77.7 times trailing earnings against a median of 29.4. The numbers make the run harder to justify: revenue growth below the median, margins below the median and a multiple well above the median. At this price, the stock is asking a lot of the business.
If you are looking for strength with more behind it than a hot tape, our Guidance Momentum screen surfaces the names where management raised its own outlook.
Streaks End. Discipline Compounds
A run like this is genuinely useful information: something about this business has the market’s full attention. But streaks are where discipline gets tested, because the urge to chase strength is strongest right before it pauses.
The Trefis High Quality (HQ) Portfolio channels that urge into a system: roughly 30 businesses selected for consistent cash generation, strong margins, and resilient balance sheets, sized and rebalanced with rules rather than excitement. It has a track record of outpacing a benchmark that combines the S&P 500, the S&P MidCap 400, and the Russell 2000. Enjoy the streak; own the process.