Portfolio
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.
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.