SEC 13F Intelligence

William Blair Investment Management, LLC / TLN

William Blair Investment Management, LLC’s Talen Energy Corp Position

Does William Blair Investment Management, LLC own Talen Energy Corp (TLN)? Yes — 525.2K shares worth $168M (+0.55% of its 13F portfolio) as of Q1 2026, down from 569.4K shares the prior filed quarter.

Position Value
$168M
Q1 2026
Shares
525.2K
% of Portfolio
+0.55%
Quarters Held
6
currently held

Position History TLN

Reported value by quarter
Q4 ’24: $240MQ4 ’24Q1 ’25: $222MQ1 ’25Q2 ’25: $320MQ2 ’25Q3 ’25: $289MQ3 ’25Q4 ’25: $213MQ4 ’25Q1 ’26: $168MQ1 ’26filingsflow.com
QuarterSharesValue% of Portfolio
Q1 2026525.2K$168M+0.55%
Q4 2025569.4K$213M+0.60%
Q3 2025679.7K$289M+0.75%
Q2 20251.10M$320M+0.85%
Q1 20251.11M$222M+0.62%
Q4 20241.19M$240M+0.59%

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 TLN.