Basic Stats
Portfolio Value $ 128,909,550
Current Positions 87
Latest Holdings, Performance, AUM (from 13F, 13D)

WBCIX - William Blair Small-Mid Cap Core Fund Class I has disclosed 87 total holdings in their latest SEC filings. Most recent portfolio value is calculated to be $ 128,909,550 USD. Actual Assets Under Management (AUM) is this value plus cash (which is not disclosed). WBCIX - William Blair Small-Mid Cap Core Fund Class I’s top holdings are Talen Energy Corporation (US:TLN) , The Baldwin Insurance Group, Inc. (US:BWIN) , Everest Group, Ltd. (US:EG) , CACI International Inc (US:CACI) , and Primo Brands Corporation (US:PRMB) . WBCIX - William Blair Small-Mid Cap Core Fund Class I’s new positions include Gogo Inc. (US:GOGO) , Coherent Corp. (US:COHR) , Maplebear Inc. (US:CART) , UL Solutions Inc. (US:ULS) , and Carpenter Technology Corporation (US:CRS) .

WBCIX - William Blair Small-Mid Cap Core Fund Class I - Portfolio Value
Top Increases This Quarter

We use the change in the portfolio allocation because this is the most meaningful metric. Changes can be due to trades or changes in share prices.

Security Shares
(MM)
Value
(MM$)
Portfolio % ΔPortfolio %
2.88 2.2316 2.2316
0.12 1.83 1.4187 1.4187
0.02 1.77 1.3724 1.3724
0.01 1.71 1.3292 1.3292
0.04 1.62 1.2591 1.2591
0.02 1.48 1.1487 1.1487
0.01 1.44 1.1171 1.1171
0.01 1.23 0.9516 0.9516
0.03 1.08 0.8370 0.8370
0.02 1.03 0.8016 0.8016
Top Decreases This Quarter

We use the change in the portfolio allocation because this is the most meaningful metric. Changes can be due to trades or changes in share prices.

Security Shares
(MM)
Value
(MM$)
Portfolio % ΔPortfolio %
0.06 1.08 0.8340 -1.0487
0.02 1.28 0.9912 -0.9890
0.02 1.95 1.5090 -0.8158
0.00 1.84 1.4309 -0.7317
0.00 0.00 -0.7276
0.02 0.63 0.4851 -0.6920
0.03 1.26 0.9758 -0.6084
0.02 0.12 0.0910 -0.5786
0.05 2.34 1.8133 -0.5137
0.00 0.77 0.5950 -0.4868
13F and Fund Filings

This form was filed on 2025-08-20 for the reporting period 2025-06-30. Click the link icon to see the full transaction history.

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2022-07-28: Important Note - We have changed the treatment of the Δ Portfolio % column in this table. Previously, we were reporting it as the percent change in the portfolio allocation. We are now reporting it as the raw change in the portfolio allocation (still reported as a percent). In formula terms, we were previously reporting it as 100 * (current allocation - prior allocation ) / prior allocation. We are now reporting it as (current allocation - prior allocation).
Security Type Avg Share Price Shares
(MM)
ΔShares
(%)
ΔShares
(%)
Value
($MM)
Portfolio
(%)
ΔPortfolio
(%)
FIXED INC CLEARING CORP.REPO / RA (000000000) 2.88 2.2316 2.2316
TLN / Talen Energy Corporation 0.01 7.04 2.81 55.86 2.1783 0.6088
BWIN / The Baldwin Insurance Group, Inc. 0.06 7.04 2.58 2.55 1.9976 -0.1903
EG / Everest Group, Ltd. 0.01 17.27 2.57 9.71 1.9911 -0.0476
CACI / CACI International Inc 0.01 14.32 2.48 48.50 1.9245 0.4693
PRMB / Primo Brands Corporation 0.08 7.04 2.40 -10.64 1.8629 -0.4790
CG / The Carlyle Group Inc. 0.05 -25.78 2.34 -12.47 1.8133 -0.5137
DOCS / Doximity, Inc. 0.04 7.04 2.30 13.17 1.7810 0.0132
WAL / Western Alliance Bancorporation 0.03 26.25 2.28 28.11 1.7686 0.2185
DBD / Diebold Nixdorf, Incorporated 0.04 8.95 2.27 38.09 1.7582 0.3280
SN / SharkNinja, Inc. 0.02 -7.34 2.24 9.99 1.7349 -0.0369
TRU / TransUnion 0.03 7.04 2.22 13.51 1.7213 0.0181
CCJ / Cameco Corporation 0.03 7.04 2.16 93.04 1.6777 0.7017
IDA / IDACORP, Inc. 0.02 7.04 2.01 6.36 1.5571 -0.0875
ONB / Old National Bancorp 0.09 -5.77 1.98 -5.12 1.5373 -0.2820
BFAM / Bright Horizons Family Solutions Inc. 0.02 -25.07 1.95 -27.10 1.5090 -0.8158
CW / Curtiss-Wright Corporation 0.00 -19.88 1.89 23.42 1.4679 0.1316
MRCY / Mercury Systems, Inc. 0.03 -13.33 1.86 8.31 1.4455 -0.0531
ASO / Academy Sports and Outdoors, Inc. 0.04 81.74 1.86 78.52 1.4448 0.5360
CHE / Chemed Corporation 0.00 -6.10 1.84 -25.71 1.4309 -0.7317
BANR / Banner Corporation 0.03 7.04 1.84 7.72 1.4283 -0.0614
GOGO / Gogo Inc. 0.12 1.83 1.4187 1.4187
ELS / Equity LifeStyle Properties, Inc. 0.03 7.04 1.82 -0.98 1.4150 -0.1907
CIEN / Ciena Corporation 0.02 7.04 1.82 44.01 1.4094 0.3107
COHR / Coherent Corp. 0.02 1.77 1.3724 1.3724
ACVA / ACV Auctions Inc. 0.11 7.04 1.73 23.24 1.3452 0.1192
DT / Dynatrace, Inc. 0.03 7.05 1.73 25.33 1.3405 0.1394
BWXT / BWX Technologies, Inc. 0.01 1.71 1.3292 1.3292
CFLT / Confluent, Inc. 0.07 7.04 1.70 13.86 1.3191 0.0178
HR / Healthcare Realty Trust Incorporated 0.11 7.04 1.70 0.41 1.3179 -0.1555
NVT / nVent Electric plc 0.02 73.89 1.63 143.28 1.2646 0.6801
CART / Maplebear Inc. 0.04 1.62 1.2591 1.2591
EWBC / East West Bancorp, Inc. 0.02 -9.51 1.62 1.83 1.2547 -0.1295
CWST / Casella Waste Systems, Inc. 0.01 14.90 1.60 18.92 1.2440 0.0688
JBTM / JBT Marel Corporation 0.01 7.04 1.59 5.37 1.2336 -0.0816
WGS / GeneDx Holdings Corp. 0.02 39.56 1.58 45.54 1.2273 0.2797
LRN / Stride, Inc. 0.01 -24.98 1.58 -13.89 1.2220 -0.3719
MMSI / Merit Medical Systems, Inc. 0.02 67.71 1.55 48.33 1.2026 0.2919
POOL / Pool Corporation 0.01 35.91 1.53 24.47 1.1878 0.1158
ULS / UL Solutions Inc. 0.02 1.48 1.1487 1.1487
WAY / Waystar Holding Corp. 0.04 7.04 1.47 17.11 1.1367 0.0465
PSTG / Pure Storage, Inc. 0.03 14.08 1.46 2.31 1.1345 0.4094
MZTI / The Marzetti Company 0.01 58.76 1.46 56.73 1.1299 0.3203
WSC / WillScot Holdings Corporation 0.05 7.04 1.44 5.57 1.1172 -0.0721
CRS / Carpenter Technology Corporation 0.01 1.44 1.1171 1.1171
REXR / Rexford Industrial Realty, Inc. 0.04 7.05 1.43 -2.72 1.1094 -0.1717
VRRM / Verra Mobility Corporation 0.06 11.68 1.41 25.90 1.0907 0.1183
AGYS / Agilysys, Inc. 0.01 -0.67 1.40 -13.57 1.0874 0.1707
EXAS / Exact Sciences Corporation 0.03 -20.68 1.36 -2.58 1.0559 -0.1620
JLL / Jones Lang LaSalle Incorporated 0.01 7.04 1.35 10.43 1.0441 -0.0177
ADC / Agree Realty Corporation 0.02 -40.61 1.28 -43.79 0.9912 -0.9890
EHC / Encompass Health Corporation 0.01 -14.25 1.27 3.83 0.9884 -0.0808
GTX / Garrett Motion Inc. 0.12 7.04 1.27 34.50 0.9864 0.1622
CADE / Cadence Bank 0.04 7.04 1.26 12.83 0.9760 0.0039
EXLS / ExlService Holdings, Inc. 0.03 -25.42 1.26 -30.86 0.9758 -0.6084
WCPRF / Whitecap Resources Inc. 0.19 7.04 1.25 11.60 0.9706 -0.0068
BCO / The Brink's Company 0.01 39.38 1.23 44.47 0.9531 0.2121
AIT / Applied Industrial Technologies, Inc. 0.01 1.23 0.9516 0.9516
EXP / Eagle Materials Inc. 0.01 38.24 1.22 25.98 0.9483 0.1023
GTLB / GitLab Inc. 0.03 31.78 1.21 26.44 0.9354 0.1048
CWAN / Clearwater Analytics Holdings, Inc. 0.05 7.04 1.20 -12.40 0.9320 -0.2630
GXO / GXO Logistics, Inc. 0.02 62.84 1.19 103.07 0.9235 0.4124
RVLV / Revolve Group, Inc. 0.06 162.74 1.19 145.15 0.9227 0.5000
OC / Owens Corning 0.01 7.04 1.13 3.01 0.8764 -0.0786
SIG / Signet Jewelers Limited 0.01 7.05 1.11 46.64 0.8636 0.2023
MLI / Mueller Industries, Inc. 0.01 7.04 1.09 11.70 0.8444 -0.0044
SMPL / The Simply Good Foods Company 0.03 1.08 0.8370 0.8370
COLD / Americold Realty Trust, Inc. 0.06 -35.80 1.08 -50.23 0.8340 -1.0487
FLS / Flowserve Corporation 0.02 1.03 0.8016 0.8016
EPAM / EPAM Systems, Inc. 0.01 7.06 1.01 12.17 0.7867 -0.0013
ADT / ADT Inc. 0.12 7.04 1.00 11.40 0.7739 -0.0064
SKY / Champion Homes, Inc. 0.02 7.05 0.98 -29.25 0.7619 -0.4479
AR / Antero Resources Corporation 0.02 7.05 0.95 6.61 0.7383 -0.0394
EMBC / Embecta Corp. 0.09 7.04 0.89 -18.64 0.6875 -0.2616
TGLS / Tecnoglass Inc. 0.01 -5.68 0.87 1.87 0.6764 -0.0685
LPX / Louisiana-Pacific Corporation 0.01 7.05 0.87 0.12 0.6726 -0.0822
CBZ / CBIZ, Inc. 0.01 0.82 0.6369 0.6369
VCEL / Vericel Corporation 0.02 7.05 0.77 2.11 0.6007 -0.0602
PCTY / Paylocity Holding Corporation 0.00 -36.13 0.77 -38.28 0.5950 -0.4868
WFRD / Weatherford International plc 0.01 7.04 0.71 0.57 0.5517 -0.0644
DSGX / The Descartes Systems Group Inc. 0.01 -30.89 0.71 -30.40 0.5476 -0.3351
PODD / Insulet Corporation 0.00 -38.27 0.70 -26.13 0.5440 -0.2833
PWP / Perella Weinberg Partners 0.04 0.70 0.5414 0.5414
EYE / National Vision Holdings, Inc. 0.03 -65.49 0.66 -39.30 0.5105 -0.0397
FRPT / Freshpet, Inc. 0.01 7.03 0.64 -12.48 0.4950 -0.1406
MRX / Marex Group plc 0.02 -58.58 0.63 -53.74 0.4851 -0.6920
NEOG / Neogen Corporation 0.02 -72.31 0.12 -84.77 0.0910 -0.5786
CGNX / Cognex Corporation 0.00 -100.00 0.00 -100.00 -0.7276