NEEIX
Needham Growth Fund
Needham Funds Inc

Portfolio concentration

As of March 31, 2026 · N-PORT
Holdings
74
Top-10 weight
42.60%
Effective holdings ?
29
Crowding ?
631.7

Holdings

As of March 31, 2026 · N-PORT
#SecurityTickerSharesValue% of fund
1 DREYFUS-TR SE-IN DIRXX 23,665,685 $23.67M 12.74%
2 PDF SOLUTIONS INC 236,800 $7.75M 4.17%
3 FORMFACTOR INC 74,500 $7.23M 3.89%
4 THERMO FISHER SCIENTIFIC INC 13,250 $6.51M 3.51%
5 SUPER MICRO COMPUTER INC 275,000 $6.26M 3.37%
6 VERTIV HOLDINGS CO 24,500 $6.14M 3.31%
7 CORNING INC 42,000 $5.71M 3.07%
8 NVENT ELECTRIC 47,000 $5.56M 2.99%
9 LAM RESEARCH CORP 25,000 $5.34M 2.88%
10 MKS INSTRUMENTS INC 21,750 $5.00M 2.69%
11 PARSONS CORP 86,000 $4.66M 2.51%
12 Nova Measuring Instruments Ltd NVMI US 10,500 $4.56M 2.45%
13 VICOR CORPORATION 27,000 $4.35M 2.34%
14 COHERENT CORP 18,000 $4.29M 2.31%
15 HUNTINGTON INGALLS INDUSTRIES INC 10,250 $3.89M 2.10%
16 ENTEGRIS INC 32,500 $3.81M 2.05%
17 CLEAN HARBORS INC 12,750 $3.66M 1.97%
18 PHOTRONICS INC 90,000 $3.64M 1.96%
19 VISHAY INTERTECHNOLOGY INC 195,000 $3.51M 1.89%
20 ASML Holding NV - NY Reg Shares 2,550 $3.37M 1.81%
21 VEECO INSTRUMENT 99,050 $3.35M 1.81%
22 ANALOG DEVICES INC 10,000 $3.18M 1.71%
23 MARVELL TECHNOLOGY INC 30,250 $3.00M 1.61%
24 MARKEL GROUP INC 1,550 $2.97M 1.60%
25 APPLIED MATERIALS INC 8,250 $2.82M 1.52%
26 TERADYNE INC 9,000 $2.67M 1.44%
27 BECTON DICKINSON and CO 16,750 $2.63M 1.42%
28 CARMAX INC 61,000 $2.54M 1.37%
29 AKAMAI TECHNOLOGIES INC 20,000 $2.30M 1.24%
30 HAMMOND POWER SOLUTIONS INC COMMON STOCK HPS/A CN 18,000 $2.27M 1.22%
31 SITIME CORP 6,000 $2.07M 1.12%
32 QNITY ELECTRONICS INC 17,500 $2.02M 1.09%
33 COSTAR GROUP INC 45,000 $1.82M 0.98%
34 HEWLETT PACKARD ENTERPRISE CO 74,000 $1.76M 0.95%
35 TTM TECHNOLOGIES INC 17,500 $1.70M 0.92%
36 MEDTRONIC PLC 19,500 $1.69M 0.91%
37 LABCORP HOLDINGS INC 6,250 $1.67M 0.90%
38 ASPEN AEROGELS INC 424,075 $1.45M 0.78%
39 ALPHABET INC CL A 5,000 $1.44M 0.77%
40 CENTURI HOLDINGS INC 47,500 $1.39M 0.75%
41 BRUKER CORP 37,500 $1.35M 0.73%
42 APPLE INC 4,750 $1.21M 0.65%
43 TENNANT CO 17,500 $1.16M 0.63%
44 GENERAC HOLDINGS INC 5,000 $976.65K 0.53%
45 BRIGHT HORIZONS FAMILY SOLUTIONS INC 11,500 $944.50K 0.51%
46 LOCKHEED MARTIN CORP 1,500 $906.58K 0.49%
47 COMCAST CORP CL A 31,500 $904.36K 0.49%
48 QUEST DIAGNOSTICS INC 4,500 $881.91K 0.47%
49 CHEVRON CORP 4,250 $879.32K 0.47%
50 AEROVIRONMENT INC 4,750 $869.49K 0.47%
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