# Positive Selection Investment Management

Positive Selection Investment Management is a Single Family Office based in Miami, United States.

## Overview

- **Organization type:** Single Family Office
- **Headquarters:** Miami, United States
- **Region:** North America
- **Address:** Miami, FL, United States
- **Assets under management:** $100M - $500M (Altss estimate)
- **Website:** psimco.com

## About

Positive Selection Investment Management, LLC is an SEC-registered investment adviser in Greenwich, CT, registered since 2024. The firm manages approximately $479 million in assets. It has 4 employees and 3 investment advisers.

## Sectors

- Enterprise Software
- AI/ML
- FinTech
- ClimateTech

## People

- David Rusenko — Principal

## Questions

### Who runs investment decisions at Positive Selection Investment Management?

David Rusenko, the firm's founder and sole principal, runs investment decisions directly. As the founder of Weebly who took the company from a dorm-room project to a 50-million-user platform and a $365 million exit to Square, Rusenko brings deep product and technical expertise to his investment process rather than delegating to a professional CIO. The office operates without a publicly visible investment committee.

### How does Positive Selection source its investment opportunities?

Rusenko sources primarily through his network of Y Combinator founders, enterprise software operators, and the broader Silicon Valley diaspora that has migrated to Miami. His approach relies on founder referrals and quiet introductions rather than the conference circuit or banker-led processes. As a former technical founder himself, he is known to engage directly with portfolio company founders on product and engineering decisions.

### How is Positive Selection structured in relation to Rusenko's other activities?

Positive Selection Investment Management, LLC is the registered investment entity for David Rusenko's single-family office. It is domiciled in Florida and operates independently of Square/Block and any other corporate vehicle. There is no publicly disclosed philanthropic foundation or adjacent operating business formally linked to the office.

## Related profiles

- [PORTFOLIO GUIDE](https://altss.com/profile/portfolio-guide)
- [Postmates](https://altss.com/profile/postmates-inc)

---

Last updated: 2026-07-06T01:24:23.473Z

Canonical page: https://altss.com/profile/positive-selection-investment-management-llc

Maintained by Altss — https://altss.com — methodology: https://altss.com/methodology