SEC 13F Intelligence

William Blair Investment Management, LLC / MLB1

William Blair Investment Management, LLC’s Mercadolibre Inc Position

Does William Blair Investment Management, LLC own Mercadolibre Inc (MLB1)? Yes — 74.8K shares worth $129M (+0.43% of its 13F portfolio) as of Q1 2026, down from 165.6K shares the prior filed quarter.

Position Value
$129M
Q1 2026
Shares
74.8K
% of Portfolio
+0.43%
Quarters Held
28
currently held

Position History MLB1

Reported value by quarter
Q2 ’19: $64MQ2 ’19Q3 ’19: $58MQ4 ’19: $58MQ1 ’20: $92MQ2 ’20: $344MQ2 ’20Q3 ’20: $373MQ4 ’20: $578MQ1 ’21: $405MQ2 ’21: $420MQ2 ’21Q3 ’21: $504MQ4 ’21: $468MQ1 ’22: $414MQ2 ’22: $215MQ2 ’22Q3 ’22: $274MQ4 ’22: $271MQ1 ’23: $483MQ2 ’23: $459MQ2 ’23Q3 ’23: $521MQ4 ’23: $589MQ1 ’24: $549MQ2 ’24: $527MQ2 ’24Q3 ’24: $675MQ4 ’24: $440MQ1 ’25: $499MQ2 ’25: $624MQ2 ’25Q3 ’25: $537MQ4 ’25: $334MQ1 ’26: $129Mfilingsflow.com
QuarterSharesValue% of Portfolio
Q1 202674.8K$129M+0.43%
Q4 2025165.6K$334M+0.93%
Q3 2025229.8K$537M+1.39%
Q2 2025238.6K$624M+1.66%
Q1 2025255.6K$499M+1.40%
Q4 2024258.5K$440M+1.07%
Q3 2024329.0K$675M+1.67%
Q2 2024320.7K$527M+1.38%
Q1 2024363.0K$549M+1.42%
Q4 2023374.8K$589M+1.71%
Q3 2023411.3K$521M+1.73%
Q2 2023387.6K$459M+1.47%
Q1 2023366.2K$483M+1.68%
Q4 2022320.6K$271M+1.04%
Q3 2022331.2K$274M+1.08%
Q2 2022337.1K$215M+0.80%
Q1 2022347.7K$414M+1.24%
Q4 2021346.9K$468M+1.26%
Q3 2021300.4K$504M+1.42%
Q2 2021269.5K$420M+1.32%
Q1 2021275.0K$405M+1.31%
Q4 2020344.9K$578M+1.92%
Q3 2020344.7K$373M+1.45%
Q2 2020349.2K$344M+1.40%
Q1 2020188.6K$92M+0.45%
Q4 2019101.7K$58M+0.23%
Q3 2019104.7K$58M+0.25%
Q2 2019105.2K$64M+0.27%

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 MLB1.