S3

Bob Press is the founder and CEO and makes the firm's investment decisions. S3 operates with a single named principal, with no publicly listed investment committee or external portfolio managers. The firm's 13F filings reflect a concentrated portfolio consistent with a single decision-maker's long-term thesis-driven approach.

S3 does not manage multiple strategies or open-ended fund vehicles for external investors. It operates more like a private partnership, holding fewer than a dozen stocks at a time with no apparent pressure to shorten holding periods or diversify away from its highest-conviction names. This structure allows it to maintain multi-year positions without facing daily liquidity demands.

Based on public 13F filings, S3 has held significant, long-duration positions in Nvidia Corporation and Mettler-Toledo International. These stakes have been maintained across multiple consecutive quarters, reflecting the firm's low-turnover, high-conviction mandate. The firm does not comment publicly on its individual investment theses.

All available evidence points to S3 operating exclusively in the public equities market. There are no public records or credible reports of the firm participating in private funding rounds, venture deals, or direct co-investments in unlisted companies. Its SEC filings are limited to publicly traded securities.

S3 is not a registered investment adviser with an obligation to publicly report AUM. The firm operates privately and has never voluntarily disclosed its AUM in public communications. This opacity is typical of concentrated, founder-run partnerships that do not market to external limited partners.