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Telmo Martins

William Blair Investment Management, Llc

Assets Managed
$30.26B
Holdings
413
Last Quarter
2026 - Q1
Filed Date
1mo 6d ago
Growth Rate
-15.59%(2Q avg: -11.44%)
Sustained Growth
0 quarters

Portfolio positions

This chart displays the top 10 holdings in William Blair Investment Management, Llc's 2026 - Q1 portfolio, based on their 13F SEC filing, out of a total of 413 positions.

Assets under management

The assets under management (AUM) of William Blair Investment Management, Llc over the past 10 years (40 quarters) show continuous growth in total asset value over the last 0 quarters. As of the latest 13F SEC filing for 2026 - Q1, they manage 30.26B in assets, with a quarterly growth rate of -15.59% and a 2-quarter average growth rate of -11.44%. The portfolio is managed by Telmo Martins, and others.

Portfolio holdings

InvestmentPortfolio %Reported Value
TSM
Taiwan Semiconductor-sp Adr
Recent Activity
Decreased -7.8%
6.17%
$1.865B
5.518M shares@ $338.05 avg price
NVDA
Nvidia Corp
Recent Activity
Decreased -15.87%
5.16%
$1.559B
8.942M shares@ $174.41 avg price
AAPL
Apple Inc
Recent Activity
Decreased -11.6%
4.04%
$1.221B
4.812M shares@ $253.8 avg price
MSFT
Microsoft Corp
Recent Activity
Decreased -17%
3.55%
$1.072B
2.897M shares@ $370.18 avg price
GOOGL
Alphabet Inc-cl A
Recent Activity
Decreased -20.61%
2.39%
$720.224M
2.505M shares@ $287.56 avg price
AVGO
Broadcom Inc
Recent Activity
Decreased -13.2%
2.26%
$681.404M
2.202M shares@ $309.52 avg price
AMZN
Amazon.com Inc
Recent Activity
Decreased -27.88%
2.18%
$658.889M
3.164M shares@ $208.28 avg price
META
Meta Platforms Inc-class A
Recent Activity
Decreased -14.63%
1.92%
$579.637M
1.013M shares@ $572.13 avg price
MA
Mastercard Inc - A
Recent Activity
Decreased -2.23%
1.76%
$529.965M
1.061M shares@ $499.66 avg price
AZNCF
Astrazeneca Plc
Recent Activity
New Position
1.25%
$377.341M
1.942M shares@ $194.3 avg price

1-10 of 413