Portfolio | Winnow Fund

Learn more about Winnow Fund's investments

Partnered: 2023

Cold Water’s first product, Happy Scratch, is a non-prescription food additive aimed at reducing itching in pets commonly caused by food and seasonal allergies. The product is based on patented technologies developed at the University of Wisconsin-Madison.

Partnered: 2024

DropCap launched its publishing rights marketplace in Summer 2023 as a tech-enabled complementary offering to its agency rights services. DropCap is entering into strategic partnerships, including one of the biggest self-publishers in the United States.

Partnered: 2022

Fenster Analytics’ product, Strata Studio, allows for ad hoc querying and visualization of data sets in SQL. The product is initially marketed toward video game development studios with potential to expand to data analysts in other industries.

Partnered: 2022

Plumb Pharmaceuticals has developed a platform technology for the extended release of medications into a patient’s system via subcutaneous injection. Their first product will focus on improving opioid addiction treatment by doubling the release time and changing the method of administration of the FDA-approved drug naltrexone.

Partnered: 2021

RoddyMedical develops innovative medical devices that improve clinical safety and patient outcomes. Their first product, the SecureMove-TLC, is an arm band that organizes a patient’s tubes, lines, and cords to prevent pulling or accidental dislodging.

Partnered: 2021

SlotCheck provides users with real-time slot performance data to enhance their playing experience while supporting partner casinos’ goals of improving customer acquisition, engagement, and retention. Slot Check is operational in three casinos.

Partnered: 2024

Sonoptima is developing a wearable ultrasound device that will continually measure the internal anatomy, specifically of pelvic organs, of cancer patients to identify the optimal time for radiation treatment. The company is using technology developed at the Medical College of Wisconsin.

Partnered: 2024

Teleperson’s customer service platform aims to align the interests of companies with the customers it serves. Its product will integrate with call centers, Business Process Outsourcers (BPOs) and other customer service infrastructures to give consumers self-service options and provide businesses with insight into consumer behavior.

Inactive companies

Partnered: 2022
Closed: 2024

leysi was developing a savings platform targeting young adults and allows users to manage spending and engage with friends while discovering deals at local vendors in their community. Leysi faced challenges in building up the two sides of the marketplace and the platform shut down due to lack of funding.

Partnered: 2021
Redeemed: 2023

Village was building a central marketplace for out-of-school education. Winnow Fund redeemed the full amount of its investment in Village in October 2023.