SEC 13F Intelligence

William Blair Investment Management, LLC / WAY

William Blair Investment Management, LLC’s Waystar Hldg Corp Position

Does William Blair Investment Management, LLC own Waystar Hldg Corp (WAY)? Not currently — the last reported position was 5.28M shares worth $173M in Q4 2025; the fund’s latest 13F (Q1 2026) no longer reports it.

Position Value
$173M
Q4 2025
Shares
5.28M
% of Portfolio
+0.48%
Quarters Held
4
position exited

Position History WAY

Reported value by quarter
Q1 ’25: $158MQ1 ’25Q2 ’25: $214MQ2 ’25Q3 ’25: $200MQ3 ’25Q4 ’25: $173MQ4 ’25filingsflow.com
QuarterSharesValue% of Portfolio
Q4 20255.28M$173M+0.48%
Q3 20255.26M$200M+0.52%
Q2 20255.24M$214M+0.57%
Q1 20254.23M$158M+0.44%

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 WAY.