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Asset Manager ← All Institutions

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

150 NORTH RIVERSIDE PLAZA, CHICAGO, IL 60606 • 312-236-1600

Q1 2026 · Filed 2026-05-08
Market Value
$29.9B
-15.4%
Holdings
448
+2
New Purchases
46
Added To
154
Closed
43
Reduced
200
Top 10 Concentration
31.0%
Turnover
19.9%

Top Buys (by % of Portfolio)

SymbolCur %Prior %Chg %Value
AZN 1.26% 0.00% +1.26% $377M
TSM 6.24% 5.14% +1.09% $1.9B
AKAM 0.62% 0.00% +0.62% $186M
BWA 0.52% 0.00% +0.52% $156M
APH 0.46% 0.00% +0.46% $136M
POWI 0.41% 0.00% +0.41% $122M
STRL 0.44% 0.04% +0.40% $132M
CHRW 0.58% 0.20% +0.38% $173M
SYNA 0.37% 0.00% +0.37% $111M
LFUS 0.35% 0.00% +0.35% $103M
LOPE 0.56% 0.21% +0.34% $167M
TIGO 0.35% 0.02% +0.33% $105M
NBHC 0.32% 0.00% +0.32% $97M
NXT 0.65% 0.34% +0.32% $196M
TWST 0.84% 0.53% +0.30% $250M

Top Sells (by % of Portfolio)

SymbolCur %Prior %Chg %Value
MSFT 3.58% 4.77% -1.19% $1.1B
SE 0.00% 0.86% -0.86% $0
ORCL 0.03% 0.69% -0.67% $8M
AMZN 2.20% 2.86% -0.66% $659M
MELI 0.43% 0.94% -0.51% $129M
QTWO 0.05% 0.55% -0.50% $14M
WAY 0.00% 0.49% -0.49% $0
FOLD 0.00% 0.43% -0.43% $0
CHE 0.00% 0.42% -0.42% $283K
WAL 0.00% 0.41% -0.41% $0
CWAN 0.00% 0.40% -0.40% $0
BCO 0.12% 0.51% -0.39% $35M
NVDA 5.21% 5.60% -0.39% $1.6B
TYL 0.25% 0.64% -0.39% $74M
GOOGL 2.41% 2.79% -0.38% $720M

Sector Allocation Over Time

Industry Breakdown

IndustryWeight
Technology 35.9%
Industrials 12.8%
Healthcare 12.8%
Financial Services 11.1%
Consumer Cyclical 9.6%

Market Cap Concentration

TierHoldingsValueWeight
Mega Cap 29 $10.5B 34.9%
Large Cap 166 $10.7B 35.6%
Mid Cap 203 $7.6B 25.2%
Small Cap 47 $1.2B 4.2%
Micro Cap 3 $7M 0.0%

Portfolio Analytics

Avg Market Cap
$108.9B
Median Market Cap
$7.9B
Avg P/E
37.9
Median P/E
25.1
Avg Dividend Yield
0.03%
Avg Beta
1.04
# Stocks
441
# ETFs / Funds
7

Top Holdings (448 total)

# Symbol % Port Shares Value Avg Price Q/Q Value Chg Share Chg Chg % Status
1 TSM 6.24% 5,518,260 $1.9B $338.05 $47M -467,070 -7.8%
2 NVDA 5.21% 8,941,756 $1.6B $174.40 -$423M -1,686,911 -15.9%
3 AAPL 4.08% 4,812,433 $1.2B $253.79 -$259M -631,895 -11.6%
4 MSFT 3.58% 2,896,782 $1.1B $370.17 -$616M -593,520 -17.0%
5 GOOGL 2.41% 2,504,605 $720M $287.56 -$267M -650,368 -20.6%
6 AVGO 2.28% 2,201,558 $681M $309.51 -$197M -335,053 -13.2%
7 AMZN 2.20% 3,163,629 $659M $208.27 -$354M -1,223,374 -27.9%
8 META 1.94% 1,013,122 $580M $572.13 -$204M -173,647 -14.6%
9 MA 1.77% 1,060,651 $530M $499.66 -$89M -24,296 -2.2%
10 AZN 1.26% 1,942,155 $377M $194.29 +1,942,155 NEW
11 LIN 1.05% 636,338 $315M $495.76 $41M -7,132 -1.1%
12 CG 1.02% 6,301,109 $305M $48.39 -$117M -830,793 -11.7%
13 COST 1.01% 302,468 $301M $996.43 $18M -26,000 -7.9%
14 ITUB 0.89% 31,684,708 $266M $8.38 $4M -4,867,055 -13.3%
15 TWST 0.84% 5,269,718 $250M $47.52 $62M -684,711 -11.5%
16 NOW 0.83% 2,371,614 $248M $104.55 -$81M +222,834 +10.4%
17 PRMB 0.82% 13,056,192 $246M $18.83 $39M +428,772 +3.4%
18 MLI 0.78% 2,109,729 $234M $110.80 $29M +329,823 +18.5%
19 INTU 0.77% 533,736 $231M $432.38 -$62M +91,345 +20.6%
20 MNST 0.71% 2,935,247 $213M $72.46 -$76M -826,002 -22.0%
21 AMD 0.71% 1,042,594 $212M $203.43 -$75M -296,952 -22.2%
22 BAP 0.71% 622,690 $211M $339.18 -$9M -144,723 -18.9%
23 A 0.68% 1,795,764 $205M $113.98 -$76M -267,245 -12.9%
24 ORLY 0.68% 2,210,034 $204M $92.31 -$68M -771,473 -25.9%
25 BWXT 0.67% 981,782 $201M $204.49 $9M -125,818 -11.4%
26 TRU 0.67% 2,891,187 $200M $69.19 -$140M -1,074,308 -27.1%
27 ONTO 0.66% 964,213 $198M $205.07 -$75M -762,374 -44.1%
28 IDXX 0.66% 351,621 $198M $561.89 -$101M -89,703 -20.3%
29 NXT 0.65% 1,622,489 $196M $120.55 $77M +259,695 +19.1%
30 ARGX 0.65% 266,067 $194M $730.51 $6M +42,401 +19.0%
31 CAVA 0.65% 2,393,971 $194M $80.90 $52M -25,276 -1.0%
32 LSCC 0.63% 2,043,720 $190M $92.76 $33M -81,540 -3.8%
33 FFIV 0.63% 649,948 $188M $289.33 $48M +99,684 +18.1%
34 AKAM 0.62% 1,619,060 $186M $114.85 +1,619,060 NEW
35 CCJ 0.61% 1,682,303 $183M $108.61 $1M -298,524 -15.1%
36 UNH 0.61% 673,263 $182M $270.59 -$69M -88,980 -11.7%
37 MDGL 0.60% 340,519 $178M $523.47 -$28M -13,701 -3.9%
38 NU 0.59% 12,267,600 $176M $14.37 -$137M -6,431,767 -34.4%
39 GMED 0.58% 2,009,763 $173M $86.16 -$47M -510,019 -20.2%
40 CHRW 0.58% 1,041,658 $173M $166.07 $103M +604,157 +138.1%
41 P 0.57% 2,881,481 $170M $59.04 -$81M -861,447 -23.0%
42 SNOW 0.57% 1,127,525 $170M $150.82 -$125M -219,473 -16.3%
43 TLN 0.56% 525,214 $168M $319.23 -$46M -44,185 -7.8%
44 LOPE 0.56% 979,734 $167M $170.03 $91M +526,594 +116.2%
45 RE 0.55% 506,166 $165M $326.85 -$33M -78,135 -13.4%
46 HALO 0.55% 2,525,975 $163M $64.63 $39M +683,019 +37.1%
47 MLM 0.54% 272,392 $160M $588.68 -$8M +2,189 +0.8%
48 COHR 0.53% 668,137 $159M $238.21 -$2M -204,923 -23.5%
49 CW 0.53% 232,069 $158M $681.12 $5M -45,768 -16.5%
50 RRX 0.52% 837,493 $157M $187.26 $50M +78,210 +10.3%
51 BWA 0.52% 2,884,062 $156M $54.26 +2,884,062 NEW
52 CIEN 0.52% 398,579 $155M $388.23 -$102M -700,014 -63.7%
53 BRP 0.50% 6,794,492 $149M $21.94 -$32M -749,321 -9.9%
54 INSM 0.49% 902,666 $148M $163.52 -$65M -318,430 -26.1%
55 NVT 0.49% 1,233,874 $146M $118.28 $6M -141,285 -10.3%
56 CPRT 0.49% 4,394,187 $146M $33.20 -$34M -191,646 -4.2%
57 HQY 0.46% 1,659,616 $139M $83.57 -$31M -195,592 -10.5%
58 CRS 0.46% 350,896 $138M $394.15 $7M -66,663 -16.0%
59 DCI 0.46% 1,615,349 $137M $84.87 -$14M -92,523 -5.4%
60 APH 0.46% 1,077,434 $136M $126.35 +1,077,434 NEW
61 LECO 0.45% 534,851 $133M $249.08 -$13M -74,961 -12.3%
62 STRL 0.44% 323,421 $132M $407.27 $119M +282,167 +684.0%
63 MELI 0.43% 74,849 $129M $1,729.02 -$204M -90,730 -54.8%
64 TECH 0.43% 2,462,487 $129M $52.26 -$12M +64,222 +2.7%
65 CLH 0.42% 443,098 $127M $286.73 $47M +103,747 +30.6%
66 CMG 0.42% 3,910,673 $125M $32.01 $3M +597,632 +18.0%
67 RS 0.41% 403,487 $123M $303.92 $42M +123,152 +43.9%
68 POWI 0.41% 2,380,677 $122M $51.20 +2,380,677 NEW
69 EXP 0.40% 630,392 $119M $189.45 $4M +71,648 +12.8%
70 DT 0.40% 3,229,051 $119M $36.98 -$20M +13,198 +0.4%
71 BSY 0.39% 3,322,723 $117M $35.12 $17M +707,550 +27.1%
72 GKOS 0.39% 1,073,819 $116M $107.66 -$9M -33,099 -3.0%
73 FHN 0.38% 5,058,092 $115M $22.76 -$12M -277,929 -5.2%
74 SN 0.38% 1,073,384 $114M $105.90 -$25M -162,937 -13.2%
75 VEEV 0.38% 643,325 $113M $175.66 -$84M -237,898 -27.0%
76 DOCS 0.38% 4,834,220 $113M $23.30 -$129M -622,765 -11.4%
77 SYNA 0.37% 1,586,244 $111M $70.04 +1,586,244 NEW
78 EYE 0.37% 4,225,766 $109M $25.90 -$7M -285,129 -6.3%
79 PLNT 0.36% 1,452,642 $108M $74.38 -$50M -6,653 -0.5%
80 FRPT 0.36% 1,813,185 $107M $58.96 -$12M -139,582 -7.2%
81 TIGO 0.35% 1,405,608 $105M $74.94 $98M +1,280,433 +1022.9%
82 KRYS 0.35% 407,178 $105M $258.32 $12M +30,838 +8.2%
83 GTX 0.35% 5,762,697 $105M $18.17 -$905K -296,590 -4.9%
84 VRSK 0.35% 547,504 $104M $189.75 $15M +147,953 +37.0%
85 LFUS 0.35% 304,575 $103M $339.35 +304,575 NEW
86 APPF 0.34% 643,231 $102M $157.82 -$47M +4,990 +0.8%
87 CWST 0.33% 1,257,092 $100M $79.34 -$44M -211,114 -14.4%
88 CHDN 0.33% 1,093,389 $98M $89.83 -$32M -52,024 -4.5%
89 NBHC 0.32% 2,474,861 $97M $39.16 +2,474,861 NEW
90 NOVT 0.31% 783,084 $92M $118.11 -$16M -125,822 -13.8%
91 ALHC 0.31% 5,214,614 $92M $17.62 $46M +2,909,359 +126.2%
92 POOL 0.31% 452,273 $92M $202.33 -$27M -67,563 -13.0%
93 STEP 0.31% 1,914,477 $91M $47.72 $48M +1,244,285 +185.7%
94 WMS 0.30% 655,684 $90M $137.13 -$10M -32,363 -4.7%
95 KMT 0.30% 2,482,535 $90M $36.13 +2,482,535 NEW
96 GH 0.29% 951,114 $88M $92.37 +951,114 NEW
97 ONB 0.29% 3,894,798 $86M $22.10 -$47M -2,063,138 -34.6%
98 FN 0.29% 164,830 $86M $521.52 -$5M -35,494 -17.7%
99 CASY 0.29% 118,098 $86M $727.86 +118,098 NEW
100 CFR 0.28% 611,831 $84M $137.08 +611,831 NEW

New Positions

SymbolValue% Port
AZN $377M 1.26%
AKAM $186M 0.62%
BWA $156M 0.52%
APH $136M 0.46%
POWI $122M 0.41%
SYNA $111M 0.37%
LFUS $103M 0.35%
NBHC $97M 0.32%
KMT $90M 0.30%
GH $88M 0.29%
CASY $86M 0.29%
CFR $84M 0.28%
TXN $82M 0.28%
CYTK $72M 0.24%
APG $71M 0.24%

Sold Out Positions

SymbolValue% Port
CTRE —%
RELX —%
SE —%
AXTA —%
TME —%
AWI —%
PEN —%
WAL —%
GXO —%
ESE —%
G —%
WBS —%
SAP —%
OWL —%
HDB —%
View SEC EDGAR Filings for WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC →

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For informational purposes only. Not investment advice. Data sourced from SEC filings. Privacy Terms