GivingTuesday Donors Repeat Gifts at a Consistently Higher Rate Than Others, Underscoring Their Lasting Impact CHARLESTON, S.C. , Oct. 21, 2025 /PRNewswire/ -- The Blackbaud Institute, a research lab at Blackbaud (NASDAQ: BLKB), the leading provider of software for powering social impact, today released a new report in partnership with GivingTuesday, the global generosity movement, that examines the unique long-term impact of GivingTuesday donors and provides strategies for nonprofits to strengthen year-ro ...