A 6-Day Losing Streak Has Rubrik Stock Down 16%
A recent slide in the data security company’s stock prompts a closer look at the numbers behind the momentum.
A six-day slide in Rubrik (RBRK) stock has erased about $2.9 billion from the company’s market value. The stock has now moved lower for 6 consecutive trading days, a cumulative loss of 16.3% that leaves its market capitalization at about $15 billion.
Rubrik’s stated mission is to secure the world’s data. The company created Zero Trust Data Security to deliver cyber resilience, helping organizations secure data across the cloud and recover from cyberattacks.
How The Streak Stacks Up Against The S&P 500
Here is how RBRK stock stacks up against the S&P 500 over the streak and the periods around it:
| Return Period | RBRK | S&P 500 |
|---|---|---|
| 1D | -2.8% | -0.1% |
| 6D (Current Streak) | -16.3% | -0.6% |
| 1M (21D) | 4.5% | 0.4% |
| 3M (63D) | 36.4% | 6.2% |
| YTD 2026 | -3.6% | 9.5% |
| 2025 | 17.0% | 16.4% |
| 2024 | 23.3% | |
| 2023 | 24.2% |
What do the fundamentals suggest about this streak?
The data shows a conflict between growth and profitability. Rubrik’s revenue over the last twelve months grew 45.7%, far outpacing the S&P 500 median of 7.6%. However, its operating margin is -21.4%, in stark contrast to the S&P 500 median of 18.4%. The company also has negative trailing earnings. This selling pressure is specific to the stock; over the same 6 trading days the S&P 500 returned -0.6%. While 87 S&P 500 stocks are on losing streaks of 3 days or more, the magnitude here is notable.
A streak is a signal, not a command.
A persistent move in one direction is information. It tells you where market attention and momentum are currently focused, but it is not an instruction to buy or sell. The disciplined response is to use the new price as a prompt to check the business. The numbers here provide a starting point for that work, weighing the company’s high growth against its current lack of profitability.
A slide like this always poses the same 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 this single name? Our ETF Scorecard shows how the software funds stack up. That way no single company’s next surprise decides the outcome.
RBRK Has Fallen 56% From A Peak Before
A stock that falls day after day is a live lesson in what single name exposure feels like. RBRK itself has fallen 56% from a peak within the past five years, and a fall like that lands very differently when one position carries too much of your wealth. Knowing what a repeat would do to your net worth is exactly what the Trefis Wealth team computes, with the same rules-based systematic discipline that runs our High Quality Portfolio. Request a free vulnerability audit of your biggest positions.