System1 - 6 Year Stock Price History | SST

Historical daily share price chart and data for System1 since 2020 adjusted for splits and dividends. The latest closing stock price for System1 as of September 17, 2026 is 3.22.
  • The all-time high System1 stock closing price was 268.10 on April 07, 2022.
  • The System1 52-week high stock price is 9.30, which is 188.8% above the current share price.
  • The System1 52-week low stock price is 1.35, which is 58.1% below the current share price.
  • The average System1 stock price for the last 52 weeks is 3.69.
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System1 Historical Annual Stock Price Data
Year Average Stock Price Year Open Year High Year Low Year Close Annual % Change
2026 2.9793 4.2800 5.2200 1.3700 3.2200 -17.86%
2025 5.6653 8.5200 10.7600 2.9000 3.9200 -56.35%
2024 14.1600 22.2000 22.8000 8.3500 8.9800 -59.55%
2023 30.1572 46.6000 54.3000 11.2000 22.2000 -52.67%
2022 96.5901 99.8000 268.1000 36.9000 46.9000 -52.91%
2021 101.0436 106.4000 114.0000 97.9000 99.6000 -7.69%
Sector Industry Market Cap Revenue
Business Services Advertising and Marketing Services $0.033B $0.266B
System1 provides an omnichannel customer acquisition marketing platform. It combines technology & data science to operate its advanced Responsive Acquisition Marketing Platform. System1, formerly known as Trebia Acquisition Corp., is based in LOS ANGELES.
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