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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MGIC INVESTMENT CORP

MTG|552848103

1004451(-26.4%)

Value:

$24.9B(-23.1%)

Arthur J. Gallagher & Co.

AJG|363576109

71667(+36.2%)

Value:

$24.7B(+65.6%)

ONESPAWORLD HOLDINGS Ltd

OSW|P73684113

1471732(-18.3%)

Value:

$24.7B(-31.1%)

Perella Weinberg Partners

PWP|71367G102

1333883(+7.9%)

Value:

$24.5B(-16.7%)

GRANITE CONSTRUCTION INC

GVA|387328107

324121(-4.4%)

Value:

$24.4B(-17.8%)

SPIRE INC

SR|84857L101

308143(-33.1%)

Value:

$24.1B(-22.9%)

OLD DOMINION FREIGHT LINE, INC.

ODFL|679580100

145419(-32.5%)

Value:

$24.1B(-36.7%)

36118L106

234853(-17.6%)

Value:

$24.0B(+5.4%)

VERINT SYSTEMS INC

VRNT|92343X100

1346201(-4.3%)

Value:

$24.0B(-37.8%)

BWX Technologies, Inc.

BWXT|05605H100

243461(-82.0%)

Value:

$24.0B(-84.0%)

Vital Farms, Inc.

VITL|92847W103

786841(-17.7%)

Value:

$24.0B(-33.5%)

OneMain Holdings, Inc.

OMF|68268W103

482649(-45.5%)

Value:

$23.6B(-48.9%)

DESCARTES SYSTEMS GROUP INC

DSGX|249906108

233338(+10.1%)

Value:

$23.5B(-2.3%)

Innovex International, Inc.

INVX|457651107

1294355(-3.8%)

Value:

$23.2B(+23.6%)

HELEN OF TROY LTD

HELE|G4388N106

423910(-3.8%)

Value:

$22.7B(-14.0%)

GRACO INC

GGG|384109104

270435(-31.9%)

Value:

$22.6B(-32.6%)

Gitlab Inc.

GTLB|37637K108

471044(+8.5%)

Value:

$22.1B(-9.5%)

Gogo Inc.

GOGO|38046C109

2524248(+4.1%)

Value:

$21.8B(+10.9%)

GRID DYNAMICS HOLDINGS, INC.

GDYN|39813G109

1389043(+39.2%)

Value:

$21.7B(-2.0%)

BIOLIFE SOLUTIONS INC

BLFS|09062W204

946623(+4.0%)

Value:

$21.6B(-8.5%)

Instrument	Shares		Other Manager	Value
Mgic Investment Corp(MTGcusip552848103)	1.0M	QoQ -26.39% (-360.3K) YoY -40.68% (-688.9K)	All Managers (Combined)	$24.9M	QoQ -23.07% (-$7.5M) YoY -34.26% (-$13.0M)
Arthur J. Gallagher & Co.(AJGcusip363576109)	71.7K	QoQ +36.18% (+19.0K) YoY NEW(+71.7K)	All Managers (Combined)	$24.7M	QoQ +65.64% (+$9.8M) YoY NEW(+$24.7M)
Onespaworld Holdings Ltd(OSWcusipP73684113)	1.5M	QoQ -18.33% (-330.4K) YoY +0.05% (+821)	All Managers (Combined)	$24.7M	QoQ -31.09% (-$11.2M) YoY +26.97% (+$5.3M)
Perella Weinberg Partners(PWPcusip71367G102)	1.3M	QoQ +7.86% (-97.3K) YoY NEW(+1.3M)	All Managers (Combined)	$24.5M	QoQ -16.74% (-$4.9M) YoY NEW(+$24.5M)
Granite Construction Inc(GVAcusip387328107)	324.1K	QoQ -4.43% (-15.0K) YoY -65.48% (-615.0K)	All Managers (Combined)	$24.4M	QoQ -17.84% (-$5.3M) YoY -54.45% (-$29.2M)
Spire Inc(SRcusip84857L101)	308.1K	QoQ -33.12% (-152.6K) YoY -33.60% (-156.0K)	All Managers (Combined)	$24.1M	QoQ -22.85% (-$7.1M) YoY -15.34% (-$4.4M)
Old Dominion Freight Line, Inc.(ODFLcusip679580100)	145.4K	QoQ -32.48% (-70.0K) YoY -28.08% (-56.8K)	All Managers (Combined)	$24.1M	QoQ -36.67% (-$13.9M) YoY -45.74% (-$20.3M)
(cusip36118L106)✕	234.9K	QoQ -17.63% (-50.3K) YoY NEW(+234.9K)	All Managers (Combined)	$24.0M	QoQ +5.40% (-$1.2M) YoY NEW(+$24.0M)
Verint Systems Inc(VRNTcusip92343X100)	1.3M	QoQ -4.29% (-60.5K) YoY -5.31% (-75.6K)	All Managers (Combined)	$24.0M	QoQ -37.76% (-$14.6M) YoY -49.01% (-$23.1M)
Bwx Technologies, Inc.(BWXTcusip05605H100)	243.5K	QoQ -81.97% (-1.1M) YoY -93.92% (-3.8M)	All Managers (Combined)	$24.0M	QoQ -84.04% (-$126.5M) YoY -94.15% (-$387.0M)
Vital Farms, Inc.(VITLcusip92847W103)	786.8K	QoQ -17.68% (-169.1K) YoY -70.30% (-1.9M)	All Managers (Combined)	$24.0M	QoQ -33.45% (-$12.1M) YoY -61.08% (-$37.6M)
Onemain Holdings, Inc.(OMFcusip68268W103)	482.6K	QoQ -45.53% (-403.5K) YoY NEW(+482.6K)	All Managers (Combined)	$23.6M	QoQ -48.92% (-$22.6M) YoY NEW(+$23.6M)
Descartes Systems Group Inc(DSGXcusip249906108)	233.3K	QoQ +10.05% (-21.3K) YoY NEW(+233.3K)	All Managers (Combined)	$23.5M	QoQ -2.31% (-$558.2K) YoY NEW(+$23.5M)
Innovex International, Inc.(INVXcusip457651107)	1.3M	QoQ -3.82% (-51.5K) YoY NEW(+1.3M)	All Managers (Combined)	$23.2M	QoQ +23.63% (-$4.4M) YoY NEW(+$23.2M)
Helen Of Troy Ltd(HELEcusipG4388N106)	423.9K	QoQ -3.84% (-16.9K) YoY NEW(+423.9K)	All Managers (Combined)	$22.7M	QoQ -14.03% (-$3.7M) YoY NEW(+$22.7M)
Graco Inc(GGGcusip384109104)	270.4K	QoQ -31.93% (-126.9K) YoY NEW(+270.4K)	All Managers (Combined)	$22.6M	QoQ -32.56% (-$10.9M) YoY NEW(+$22.6M)
Gitlab Inc.(GTLBcusip37637K108)	471.0K	QoQ +8.52% (-37.0K) YoY NEW(+471.0K)	All Managers (Combined)	$22.1M	QoQ -9.48% (-$2.3M) YoY NEW(+$22.1M)
Gogo Inc.(GOGOcusip38046C109)	2.5M	QoQ +4.11% (+99.9K) YoY +31.37% (+602.9K)	All Managers (Combined)	$21.8M	QoQ +10.94% (+$2.1M) YoY +28.98% (+$4.9M)
Grid Dynamics Holdings, Inc.(GDYNcusip39813G109)	1.4M	QoQ +39.20% (-391.2K) YoY NEW(+1.4M)	All Managers (Combined)	$21.7M	QoQ -2.04% (-$453.1K) YoY NEW(+$21.7M)
Biolife Solutions Inc(BLFScusip09062W204)	946.6K	QoQ +3.98% (-36.3K) YoY -45.17% (-780.1K)	All Managers (Combined)	$21.6M	QoQ -8.51% (-$2.0M) YoY -32.49% (-$10.4M)