William Blair Investment Management, LLC

Filing Details

13F-HR • 2025-03-31

SEC FilingSEC DataHachi Filing

Report Date: 2025-03-31
Filing Date: 2025-05-09
Total Holdings: 423
Total Value: 35621637487
Accession Number: 0001644956-25-000018
Form Type: 13F-HR
CIK: 0001644956
Manager Name: William Blair Investment Management, LLC

Data Enrichment

97% identified

410 identified13 unidentified

Holdings

SEC FilingSEC DataHachi Filing

Manager:

423 positions • $35,621,637.487K total value

423 positions

Manager:

SEC FilingSEC DataHachi Filing

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GLAUKOS Corp

GKOS|377322102

745290(-7.9%)

Value:

$73.4B(-39.6%)

Avantor, Inc.

AVTR|05352A100

4433042(-6.7%)

Value:

$71.9B(-28.2%)

Champion Homes, Inc.

SKY|830830105

745333(+1.0%)

Value:

$70.6B(+8.7%)

Tecnoglass Inc.

TGLS|G87264100

980936(-4.6%)

Value:

$70.2B(-13.9%)

ARCH CAPITAL GROUP LTD.

ACGL|G0450A105

724149(+16.0%)

Value:

$69.6B(+20.9%)

WNS (HOLDINGS) LTD

WNS|G98196101

1109041(-0.3%)

Value:

$68.2B(+29.3%)

LATTICE SEMICONDUCTOR CORP

LSCC|518415104

1250434(-24.2%)

Value:

$65.6B(-29.8%)

PARSONS CORP

PSN|70202L102

1095474(+64.0%)

Value:

$64.9B(+5.2%)

DIEBOLD NIXDORF, Inc

DBD|253651202

1482352(+16.5%)

Value:

$64.8B(+18.3%)

Nu Holdings Ltd.

NU|G6683N103

6288910(+4.3%)

Value:

$64.4B(+3.1%)

MERIT MEDICAL SYSTEMS INC

MMSI|589889104

601644(-12.4%)

Value:

$63.6B(-4.3%)

G5S37H101

1676359(-33.1%)

Value:

$59.2B(-24.2%)

YPF SOCIEDAD ANONIMA

YPF|984245100

1680840(+56.5%)

Value:

$58.9B(+29.0%)

GRUPO FINANCIERO GALICIA SA

GGAL|399909100

1076264(+19.4%)

Value:

$58.6B(+4.4%)

BIO-TECHNE Corp

TECH|09073M104

990099(-7.9%)

Value:

$58.0B(-25.0%)

FOX FACTORY HOLDING CORP

FOXF|35138V102

2476501(-17.0%)

Value:

$57.8B(-36.0%)

Vericel Corp

VCEL|92346J108

1285086(+2.1%)

Value:

$57.3B(-17.0%)

RUSH ENTERPRISES INC \TX\

RUSHA|781846209

1070310(+70.6%)

Value:

$57.2B(+66.3%)

Grab Holdings Ltd

GRAB|G4124C109

12442630

Value:

$56.4B

IDACORP INC

IDA|451107106

476393(+25.3%)

Value:

$55.4B(+33.3%)

Instrument	Shares		Other Manager	Value
Glaukos Corp(GKOScusip377322102)	745.3K	QoQ -7.94% (-64.3K) YoY NEW(+745.3K)	All Managers (Combined)	$73.4M	QoQ -39.57% (-$48.0M) YoY NEW(+$73.4M)
Avantor, Inc.(AVTRcusip05352A100)	4.4M	QoQ -6.65% (-315.9K) YoY +323.10% (+3.4M)	All Managers (Combined)	$71.9M	QoQ -28.18% (-$28.2M) YoY +168.22% (+$45.1M)
Champion Homes, Inc.(SKYcusip830830105)	745.3K	QoQ +1.04% (+7.7K) YoY -37.60% (-449.2K)	All Managers (Combined)	$70.6M	QoQ +8.68% (+$5.6M) YoY -30.45% (-$30.9M)
Tecnoglass Inc.(TGLScusipG87264100)	980.9K	QoQ -4.59% (-47.2K) YoY -39.25% (-633.8K)	All Managers (Combined)	$70.2M	QoQ -13.94% (-$11.4M) YoY -16.46% (-$13.8M)
Arch Capital Group Ltd.(ACGLcusipG0450A105)	724.1K	QoQ +16.03% (+100.1K) YoY NEW(+724.1K)	All Managers (Combined)	$69.6M	QoQ +20.85% (+$12.0M) YoY NEW(+$69.6M)
Wns (Holdings) Ltd(WNScusipG98196101)	1.1M	QoQ -0.33% (-3.7K) YoY +245.64% (+788.2K)	All Managers (Combined)	$68.2M	QoQ +29.32% (-$15.5M) YoY +320.61% (+$52.0M)
Lattice Semiconductor Corp(LSCCcusip518415104)	1.3M	QoQ -24.17% (-398.8K) YoY -49.88% (-1.2M)	All Managers (Combined)	$65.6M	QoQ -29.80% (-$27.8M) YoY -66.39% (-$129.6M)
Parsons Corp(PSNcusip70202L102)	1.1M	QoQ +63.95% (+427.3K) YoY NEW(+1.1M)	All Managers (Combined)	$64.9M	QoQ +5.23% (+$3.2M) YoY NEW(+$64.9M)
Diebold Nixdorf, Inc(DBDcusip253651202)	1.5M	QoQ +16.46% (+209.6K) YoY NEW(+1.5M)	All Managers (Combined)	$64.8M	QoQ +18.30% (+$10.0M) YoY NEW(+$64.8M)
Nu Holdings Ltd.(NUcusipG6683N103)	6.3M	QoQ +4.35% (+262.7K) YoY +17.95% (+957.4K)	All Managers (Combined)	$64.4M	QoQ +3.15% (+$2.0M) YoY +1.24% (+$793.1K)
Merit Medical Systems Inc(MMSIcusip589889104)	601.6K	QoQ -12.42% (-85.4K) YoY -80.22% (-2.4M)	All Managers (Combined)	$63.6M	QoQ -4.28% (-$2.8M) YoY -72.40% (-$166.9M)
(cusipG5S37H101)✕	1.7M	QoQ -33.07% (-828.4K) YoY NEW(+1.7M)	All Managers (Combined)	$59.2M	QoQ -24.16% (-$18.9M) YoY NEW(+$59.2M)
Ypf Sociedad Anonima(YPFcusip984245100)	1.7M	QoQ +56.46% (+606.6K) YoY NEW(+1.7M)	All Managers (Combined)	$58.9M	QoQ +28.98% (+$13.2M) YoY NEW(+$58.9M)
Grupo Financiero Galicia Sa(GGALcusip399909100)	1.1M	QoQ +19.44% (+175.2K) YoY NEW(+1.1M)	All Managers (Combined)	$58.6M	QoQ +4.40% (+$2.5M) YoY NEW(+$58.6M)
Bio-Techne Corp(TECHcusip09073M104)	990.1K	QoQ -7.88% (-84.8K) YoY -54.42% (-1.2M)	All Managers (Combined)	$58.0M	QoQ -25.02% (-$19.4M) YoY -62.03% (-$94.9M)
Fox Factory Holding Corp(FOXFcusip35138V102)	2.5M	QoQ -16.99% (-507.0K) YoY NEW(+2.5M)	All Managers (Combined)	$57.8M	QoQ -35.99% (-$32.5M) YoY NEW(+$57.8M)
Vericel Corp(VCELcusip92346J108)	1.3M	QoQ +2.11% (-26.7K) YoY +52.68% (+443.4K)	All Managers (Combined)	$57.3M	QoQ -17.01% (-$11.8M) YoY +30.96% (+$13.6M)
Rush Enterprises Inc \Tx\(RUSHAcusip781846209)	1.1M	QoQ +70.63% (+443.0K) YoY +34.73% (+275.9K)	All Managers (Combined)	$57.2M	QoQ +66.33% (+$22.8M) YoY +34.45% (+$14.7M)
Grab Holdings Ltd(GRABcusipG4124C109)	12.4M	QoQ NEW(+12.4M) YoY NEW(+12.4M)	All Managers (Combined)	$56.4M	QoQ NEW(+$56.4M) YoY NEW(+$56.4M)
Idacorp Inc(IDAcusip451107106)	476.4K	QoQ +25.34% (+96.3K) YoY +23.76% (+91.5K)	All Managers (Combined)	$55.4M	QoQ +33.30% (+$13.8M) YoY +54.84% (+$19.6M)