William Blair Investment Management, LLC / TRU
William Blair Investment Management, LLC’s Transunion Position
Does William Blair Investment Management, LLC own Transunion (TRU)? Yes — 2.89M shares worth $200M (+0.66% of its 13F portfolio) as of Q1 2026, down from 3.97M shares the prior filed quarter.
Position Value
$200M
Q1 2026
Shares
2.89M
% of Portfolio
+0.66%
Quarters Held
16
currently held
Position History TRU
Reported value by quarter
| Quarter | Shares | Value | % of Portfolio |
|---|---|---|---|
| Q1 2026 | 2.89M | $200M | +0.66% |
| Q4 2025 | 3.97M | $340M | +0.95% |
| Q3 2025 | 4.68M | $392M | +1.01% |
| Q2 2025 | 4.74M | $417M | +1.11% |
| Q1 2025 | 3.34M | $278M | +0.78% |
| Q4 2024 | 3.37M | $313M | +0.76% |
| Q3 2024 | 2.58M | $270M | +0.67% |
| Q2 2024 | 383.1K | $28M | +0.07% |
| Q3 2020 | 1.98M | $166M | +0.65% |
| Q2 2020 | 2.01M | $175M | +0.71% |
| Q1 2020 | 1.99M | $132M | +0.64% |
| Q4 2019 | 2.55M | $218M | +0.87% |
| Q3 2019 | 3.09M | $251M | +1.07% |
| Q2 2019 | 3.14M | $231M | +0.97% |
| Q1 2019 | 3.17M | $212M | +0.89% |
| Q4 2018 | 2.81M | $160M | +0.79% |
Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See William Blair Investment Management, LLC’s full portfolio or all institutional holders of TRU.