William Blair Investment Management, LLC / WEA
William Blair Investment Management, LLC’s Western Alliance Bancorp Position
Does William Blair Investment Management, LLC own Western Alliance Bancorp (WEA)? Not currently — the last reported position was 1.71M shares worth $144M in Q4 2025; the fund’s latest 13F (Q1 2026) no longer reports it.
Position Value
$144M
Q4 2025
Shares
1.71M
% of Portfolio
+0.40%
Quarters Held
29
position exited
Position History WEA
Reported value by quarter
| Quarter | Shares | Value | % of Portfolio |
|---|---|---|---|
| Q4 2025 | 1.71M | $144M | +0.40% |
| Q3 2025 | 2.39M | $208M | +0.54% |
| Q2 2025 | 2.31M | $180M | +0.48% |
| Q1 2025 | 2.29M | $176M | +0.49% |
| Q4 2024 | 2.57M | $214M | +0.52% |
| Q3 2024 | 2.62M | $227M | +0.56% |
| Q2 2024 | 2.81M | $177M | +0.46% |
| Q1 2024 | 2.79M | $179M | +0.46% |
| Q4 2023 | 2.95M | $194M | +0.56% |
| Q3 2023 | 3.44M | $158M | +0.53% |
| Q2 2023 | 3.32M | $121M | +0.39% |
| Q1 2023 | 1.84M | $65M | +0.23% |
| Q4 2022 | 2.59M | $154M | +0.59% |
| Q3 2022 | 2.71M | $178M | +0.70% |
| Q2 2022 | 2.69M | $190M | +0.70% |
| Q1 2022 | 2.77M | $230M | +0.69% |
| Q4 2021 | 2.47M | $266M | +0.72% |
| Q3 2021 | 2.17M | $236M | +0.67% |
| Q2 2021 | 2.22M | $207M | +0.65% |
| Q1 2021 | 2.36M | $223M | +0.72% |
| Q4 2020 | 2.51M | $151M | +0.50% |
| Q3 2020 | 790.4K | $25M | +0.10% |
| Q2 2020 | 742.0K | $28M | +0.11% |
| Q1 2020 | 770.2K | $24M | +0.11% |
| Q4 2019 | 410.8K | $23M | +0.09% |
| Q3 2019 | 470.2K | $22M | +0.09% |
| Q2 2019 | 479.5K | $21M | +0.09% |
| Q1 2019 | 514.7K | $21M | +0.09% |
| Q4 2018 | 534.1K | $21M | +0.10% |
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 WEA.