Why SentinelOne Stock Plummeted 32.4% Last Year and Has Kept Falling in 2026

SentinelOne (NYSE: S) banal suffered big sell-offs across 2025's trading. The cybersecurity company's stock terms declined 32.4% crossed the stretch, according to information from S&P Global Market Intelligence

Despite the S&P 500 scale gaining 16.4% last twelvemonth and the adjacent much tech-heavy Nasdaq Composite scale rising 20.4%, SentinelOne banal wasn't able to extremity 2025 successful the green. Last year's big diminution for the company's stock terms came connected the heels of a astir 19% diminution crossed 2024's trading.

SentinelOne banal saw a bid of pronounced pullbacks successful conjunction with earnings reports published by the institution past year. While the quarterly results mostly showed that revenue was continuing to turn astatine a robust clip, concerns astir margins and guardant guidance drove important sell-offs.

In March, the institution published results for the 4th fourth of its 2025 fiscal twelvemonth -- which ended Jan. 31. While income for the play roseate 29.5% twelvemonth implicit twelvemonth to scope $225.5 cardinal and bushed the mean expert estimation by astir $3.2 million, the business's nonaccomplishment of $0.22 per stock successful the play was $0.01 worse than analysts had forecasted.

The company's next quarterly study arrived successful May and triggered different large circular of sell-offs. Sales and net for the archetypal 4th of the existent fiscal year, which ended April 30, were astir successful enactment with expectations -- but investors weren't blessed with management's guidance.

SentinelOne banal did determination higher pursuing the merchandise of its fiscal Q2 report, which arrived astatine the extremity of August. The institution posted non-GAAP (adjusted) net per stock of $0.04 connected income of $242.2 million, with income being successful enactment with Wall Street's people and net beating the mean expert forecast by $0.02.

Unfortunately, the company's next quarterly study didn't spell implicit arsenic well. Early successful December, SentinelOne published results for fiscal Q3 2026 -- which ended Oct. 31. Adjusted net income of $0.07 bushed the mean expert estimation by $0.02 per share, and income of $258.9 cardinal bushed Wall Street's people by astir $2.7 cardinal -- but investors were looking for stronger guardant guidance. News that main fiscal serviceman Barbara Larson was retiring from her station apt besides factored into the sell-off.