System1, Inc. (SST)

SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC.

System1, Inc. (SST) is listed on the New York Stock Exchange, where it has traded since January 28, 2022.

Listed On
the New York Stock Exchange
Listed Since
January 28, 2022
Employees
250
Market Cap
$25M

About System1, Inc.

System1 Inc develops technology and data science to operate a responsive acquisition marketing platform. It operate several flagship brands across multiple consumer verticals, including shopping, travel and search, and a customer acquisition and marketing platform powered by Artificial Intelligence and machine learning. The company's segment includes Marketing and Products. It generates maximum revenue from the Marketing segment. Geographically, it operates in United States and Other countries.

Institutional ownership

In 13F filings for the quarter ended June 30, 2026, 20 institutions reported holding SST, with 597,922 shares worth $1.4 million in aggregate. The largest reported holder was Bank of America, with 161,513 shares worth $373,095. Of the 5 largest holders listed below, 1 opened a new position in SST, 2 added shares, 1 reduced its position and 1 held its position unchanged during the quarter.

InstitutionSharesValueQuarter change
Bank of America161,513$373KReduced
Vanguard136,717$316KAdded 195.46%
Cerity Partners116,844$270KUnchanged
Crescent Grove Advisors75,545$175KNew position
BlackRock43,353$100KAdded 78.8%

Form 13F is a quarterly report that institutional investment managers with at least $100 million in qualifying securities file with the SEC. It lists long positions as of the last day of the quarter and is due within 45 days of quarter end, so these holdings describe that date rather than today.

Frequently asked questions

What is SST?

System1, Inc. (SST) is listed on the New York Stock Exchange, where it has traded since January 28, 2022.

Who are the largest institutional holders of SST?

In 13F filings for the quarter ended June 30, 2026, the largest reported holders of SST were Bank of America, Vanguard and Cerity Partners.

How many institutions own SST?

20 institutions reported a position in SST for the quarter ended June 30, 2026, worth $1.4 million in total.

Did institutions buy or sell SST last quarter?

Of the 5 largest reported holders, 1 opened a new position in SST, 2 added shares, 1 reduced its position and 1 held its position unchanged during the quarter. Every reported holder and its change is on the SentiSense ownership page for SST.

Every reported institutional holder, plus insider and congressional trades in SST, on SentiSense.