Needham Investment Management Llc Portfolio Stock Holdings
Needham Investment Management Llc disclosed 176 stock positions valued at approximately $2.0 billion in its latest SEC 13F filing. The largest holdings include NLIGHT INC, VICOR CORP, and VERTIV HOLDINGS CO. The filing reflects positions held as of March 31, 2026 and was filed on May 15, 2026.
- Report Period
- March 31, 2026
- No. of Stocks
- 176
- Portfolio Value
- $2.0B
Holdings by Sector
Needham Investment Management Llc Portfolio Holdings in Q1 2026
158 holdings in the latest reporting period.
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| Company | Symbol | Sector | Portfolio % | Shares | Change (Shares) | Change % | Value |
|---|---|---|---|---|---|---|---|
| NLIGHT INC | LASR | Technology | 5.61% | 1,922,740 | +65,000 | +3.50% | $109,634,635 |
| VICOR CORP | VICR | Technology | 4.30% | 522,000 | -47,775 | -8.38% | $84,042,000 |
| VERTIV HOLDINGS CO | VRT | Industrials | 3.66% | 285,250 | - | - | $71,477,945 |
| PDF SOLUTIONS INC | PDFS | Technology | 3.39% | 2,022,700 | +57,700 | +2.94% | $66,162,517 |
| ARTERIS INC | AIP | Technology | 3.33% | 3,952,500 | +541,000 | +15.86% | $64,979,100 |
| FORMFACTOR INC | FORM | Technology | 3.00% | 603,500 | -91,000 | -13.10% | $58,533,465 |
| VISHAY INTERTECHNOLOGY INC | VSH | Technology | 2.69% | 2,920,000 | +545,000 | +22.95% | $52,560,000 |
| LINCOLN EDL SVCS CORP | LINC | Consumer Defensive | 2.66% | 1,277,500 | +152,500 | +13.56% | $51,968,700 |
| OIL DRI CORP AMER | ODC | Basic Materials | 2.26% | 677,500 | +42,500 | +6.69% | $44,098,475 |
| UNIVERSAL TECHNICAL INST INC | UTI | Consumer Defensive | 1.90% | 1,030,000 | +222,500 | +27.55% | $37,183,000 |
| SUPER MICRO COMPUTER INC | SMCI | Other | 1.88% | 1,616,500 | +236,500 | +17.14% | $36,807,705 |
| THERMON GROUP HLDGS INC | THR | Industrials | 1.63% | 632,500 | +12,500 | +2.02% | $31,878,000 |
| THREDUP INC | TDUP | Consumer Cyclical | 1.56% | 9,275,000 | +3,200,000 | +52.67% | $30,422,000 |
| VEECO INSTRS INC DEL | VECO | Technology | 1.53% | 880,000 | +75,000 | +9.32% | $29,796,801 |
| TETRA TECHNOLOGIES INC DEL | TTI | Energy | 1.47% | 3,375,000 | +1,000,000 | +42.11% | $28,755,000 |
| MKS INC. | MKSI | Technology | 1.41% | 120,000 | -10,500 | -8.05% | $27,577,201 |
| VISHAY PRECISION GROUP INC | VPG | Technology | 1.38% | 620,000 | -37,500 | -5.70% | $26,920,400 |
| COHERENT CORP | COHR | Technology | 1.29% | 105,500 | -32,000 | -23.27% | $25,131,155 |
| ARLO TECHNOLOGIES INC | ARLO | Industrials | 1.28% | 1,760,000 | +220,000 | +14.29% | $25,044,800 |
| PHOTRONICS INC | PLAB | Technology | 1.25% | 605,000 | -170,000 | -21.94% | $24,448,050 |
| CENTURI HOLDINGS INC | CTRI | Utilities | 1.22% | 817,628 | +20,000 | +2.51% | $23,882,914 |
| CECO ENVIRONMENTAL CORP | CECO | Industrials | 1.18% | 387,500 | +89,000 | +29.82% | $23,087,250 |
| CRA INTL INC | CRAI | Industrials | 1.16% | 140,006 | +41,250 | +41.77% | $22,664,171 |
| ASURE SOFTWARE INC | ASUR | Technology | 1.15% | 2,607,500 | +37,500 | +1.46% | $22,424,500 |
| PARSONS CORP DEL | PSN | Technology | 1.13% | 409,000 | +85,000 | +26.23% | $22,155,530 |
| HUNTINGTON INGALLS INDS INC | HII | Industrials | 1.07% | 55,250 | +4,750 | +9.41% | $20,989,475 |
| AKAMAI TECHNOLOGIES INC | AKAM | Technology | 1.05% | 178,500 | +22,000 | +14.06% | $20,500,725 |
| CLEAN HARBORS INC | CLH | Industrials | 1.01% | 68,856 | - | - | $19,743,081 |
| NVENT ELEC PLC | NVT | Other | 0.94% | 154,500 | - | - | $18,274,260 |
| ASTRONICS CORP | ATRO | Industrials | 0.93% | 272,500 | - | - | $18,183,925 |
| SELECT WATER SOLUTIONS INC | WTTR | Energy | 0.90% | 1,155,000 | +380,000 | +49.03% | $17,671,500 |
| GORMAN RUPP CO | GRC | Industrials | 0.87% | 272,500 | +12,500 | +4.81% | $16,930,425 |
| MATRIX SVC CO | MTRX | Industrials | 0.84% | 1,435,000 | - | - | $16,473,800 |
| VITAL FARMS INC | VITL | Consumer Defensive | 0.83% | 1,150,000 | +465,000 | +67.88% | $16,238,000 |
| ADTRAN HOLDINGS INC | ADTN | Technology | 0.79% | 1,228,500 | -219,000 | -15.13% | $15,454,531 |
| ASPEN AEROGELS INC | ASPN | Industrials | 0.79% | 4,518,775 | +167,075 | +3.84% | $15,454,211 |
| BRUKER CORP | BRKR | Healthcare | 0.78% | 424,250 | +59,600 | +16.34% | $15,323,910 |
| TENNANT CO | TNC | Industrials | 0.78% | 229,000 | +161,500 | +239.26% | $15,205,600 |
| VIASAT INC | VSAT | Technology | 0.78% | 330,600 | - | - | $15,141,480 |
| KLA CORP | KLAC | Technology | 0.77% | 10,250 | -2,750 | -21.15% | $15,092,203 |
| LABCORP HOLDINGS INC | LH | Healthcare | 0.77% | 56,313 | - | - | $15,024,872 |
| GENERAC HLDGS INC | GNRC | Industrials | 0.72% | 72,450 | +37,950 | +110.00% | $14,151,658 |
| WABTEC | WAB | Industrials | 0.71% | 55,750 | - | - | $13,932,483 |
| ENTEGRIS INC | ENTG | Technology | 0.70% | 117,000 | -74,400 | -38.87% | $13,717,080 |
| ECOVYST INC | ECVT | Basic Materials | 0.67% | 1,020,000 | - | - | $13,117,200 |
| MARKEL GROUP INC | MKL | Financial Services | 0.66% | 6,700 | +475 | +7.63% | $12,824,270 |
| THERMO FISHER SCIENTIFIC INC | TMO | Healthcare | 0.64% | 25,250 | - | - | $12,411,133 |
| JACOBS SOLUTIONS INC | J | Industrials | 0.63% | 96,000 | +38,000 | +65.52% | $12,218,880 |
| BWX TECHNOLOGIES INC | BWXT | Industrials | 0.62% | 59,000 | +23,000 | +63.89% | $12,064,911 |
| MDU RES GROUP INC | MDU | Industrials | 0.59% | 557,500 | +15,500 | +2.86% | $11,551,400 |
| EQUINIX INC | EQIX | Real Estate | 0.56% | 11,200 | +450 | +4.19% | $10,978,688 |
| MYR GROUP INC | MYRG | Industrials | 0.56% | 38,600 | - | - | $10,897,552 |
| BRIGHT HORIZONS FAM SOL IN D | BFAM | Consumer Cyclical | 0.54% | 129,000 | - | - | $10,594,770 |
| ENERGY SERVICES OF AMER CORP | ESOA | Industrials | 0.54% | 800,000 | +214,560 | +36.65% | $10,504,000 |
| TRANSCAT INC | TRNS | Industrials | 0.49% | 130,500 | +6,130 | +4.93% | $9,585,225 |
| UNISYS CORP | UIS | Technology | 0.45% | 4,253,000 | -559,200 | -11.62% | $8,803,710 |
| TERADYNE INC | TER | Technology | 0.44% | 29,000 | -1,000 | -3.33% | $8,597,340 |
| COGNEX CORP | CGNX | Technology | 0.43% | 173,000 | - | - | $8,475,270 |
| GILEAD SCIENCES INC | GILD | Healthcare | 0.39% | 55,000 | - | - | $7,665,350 |
| ASML HLDG NV | ASML | Other | 0.39% | 5,800 | +300 | +5.45% | $7,660,815 |
| VAIL RESORTS INC | MTN | Consumer Cyclical | 0.39% | 59,000 | - | - | $7,570,880 |
| EVOLV TECHNOLOGIES HLDNGS IN | EVLV | Industrials | 0.39% | 1,250,000 | +700,000 | +127.27% | $7,562,500 |
| BENTLEY SYS INC | BSY | Technology | 0.39% | 215,000 | +75,000 | +53.57% | $7,550,800 |
| MODINE MFG CO | MOD | Consumer Cyclical | 0.38% | 34,500 | +9,500 | +38.00% | $7,476,495 |
| PRECISION OPTICS CORP INC MA | POCI | Healthcare | 0.38% | 1,670,550 | +950,550 | +132.02% | $7,333,715 |
| SMITH MIDLAND CORP | SMID | Basic Materials | 0.37% | 225,000 | - | - | $7,319,250 |
| RESEARCH SOLUTIONS INC | RSSS | Technology | 0.36% | 3,155,000 | +10,000 | +0.32% | $7,130,300 |
| TTM TECHNOLOGIES INC | TTMI | Technology | 0.36% | 72,500 | -47,750 | -39.71% | $7,062,950 |
| ABRDN LIFE SCIENCES INVESTOR | HQL | Financial Services | 0.36% | 429,573 | +26,209 | +6.50% | $6,989,152 |
| 908 DEVICES INC | MASS | Healthcare | 0.35% | 1,120,000 | +350,000 | +45.45% | $6,854,400 |
| CRH PLC | CRH | Other | 0.35% | 64,700 | +24,000 | +58.97% | $6,801,264 |
| COMCAST CORP NEW | CMCSA | Communication Services | 0.34% | 231,500 | - | - | $6,646,365 |
| MASTEC INC | MTZ | Industrials | 0.33% | 20,100 | +20,100 | +100.00% | $6,466,974 |
| LIFE TIME GROUP HOLDINGS INC | LTH | Consumer Cyclical | 0.33% | 240,000 | +125,000 | +108.70% | $6,465,600 |
| NORTHERN TECHNOLOGIES INTL C | NTIC | Basic Materials | 0.32% | 765,000 | +51,743 | +7.25% | $6,303,600 |
| ROGERS CORP | ROG | Technology | 0.32% | 58,000 | -2,000 | -3.33% | $6,225,140 |
| HONEYWELL INTL INC | HON | Industrials | 0.32% | 27,500 | - | - | $6,215,825 |
| ATLANTA BRAVES HLDGS INC | BATRK | Communication Services | 0.32% | 145,000 | +40,000 | +38.10% | $6,191,500 |
| HARMONIC INC | HLIT | Technology | 0.31% | 668,000 | +123,000 | +22.57% | $5,998,640 |
| COSTAR GROUP INC | CSGP | Real Estate | 0.29% | 142,000 | +81,500 | +134.71% | $5,728,280 |
| CORNING INC | GLW | Technology | 0.29% | 42,000 | - | - | $5,710,740 |
| CORE MOLDING TECHNOLOGIES IN | CMT | Basic Materials | 0.29% | 252,371 | -979 | -0.39% | $5,653,110 |
| ABRDN HEALTHCARE INVESTORS | HQH | Financial Services | 0.28% | 311,284 | +19,354 | +6.63% | $5,537,742 |
| NAVIGATOR HLDGS LTD | Y62132108 | Other | 0.28% | 286,000 | - | - | $5,528,380 |
| CARMAX INC | KMX | Consumer Cyclical | 0.27% | 128,500 | -1,000 | -0.77% | $5,343,030 |
| LAM RESEARCH CORP | LRCX | Other | 0.27% | 25,000 | - | - | $5,341,500 |
| LIGHTPATH TECHNOLOGIES INC | LPTH | Technology | 0.27% | 527,500 | +527,500 | +100.00% | $5,290,825 |
| SITIME CORP | SITM | Technology | 0.27% | 15,000 | -500 | -3.23% | $5,180,250 |
| RED CAT HLDGS INC | RCAT | Technology | 0.25% | 380,000 | +380,000 | +100.00% | $4,974,200 |
| MARVELL TECHNOLOGY INC | MRVL | Technology | 0.24% | 48,250 | - | - | $4,779,163 |
| APPLE INC | AAPL | Technology | 0.24% | 18,450 | - | - | $4,682,426 |
| BOX INC | BOX | Technology | 0.24% | 195,000 | +5,000 | +2.63% | $4,609,800 |
| MEDTRONIC PLC | MDT | Other | 0.24% | 53,041 | - | - | $4,596,003 |
| BADGER METER INC | BMI | Technology | 0.23% | 30,000 | +5,000 | +20.00% | $4,570,500 |
| SURO CAPITAL CORP | SSSS | Financial Services | 0.23% | 426,594 | - | - | $4,568,822 |
| BOEING CO | BA | Industrials | 0.23% | 22,500 | - | - | $4,478,175 |
| LEMAITRE VASCULAR INC | LMAT | Healthcare | 0.22% | 40,000 | - | - | $4,366,800 |
| ENCOMPASS HEALTH CORP | EHC | Healthcare | 0.22% | 45,000 | - | - | $4,352,850 |
| CEVA INC | CEVA | Technology | 0.22% | 230,000 | +70,000 | +43.75% | $4,296,400 |
| COHU INC | COHU | Technology | 0.20% | 130,000 | -15,000 | -10.34% | $3,980,600 |