Needham Investment Management LLC

In its 13F for Q1 2026 (holdings as of March 31, 2026, filed May 15, 2026), Needham Investment Management LLC reported 176 stock positions worth $2.0 billion. Its top holding was Nlight (LASR) at 5.6% of the portfolio, followed by Vicor (VICR, 4.3%) and Vertiv Class A (VRT, 3.7%). Compared with Q4 2025, it opened 20 new positions, sold out of 7, added to 65 and reduced 29. The biggest buy was Nlight (LASR, shares +4%) and the biggest sale TTM Technologies (TTMI, shares −53%).

Most Recent 13F
Q2 2026
Location
NEW YORK, NY
CIK
0001167212
Portfolio Value
$2.0B (Q1 2026)
SEC Filing
0000919574-26-003133 ↗ filed May 15, 2026

Holdings Value

0$1.0B$2.0B$3.0B$4.0B Q1 2024: $1.1B Q1 2024 Q2 2024: $1.2B Q2 2024 Q3 2024: $1.3B Q3 2024 Q4 2024: $1.3B Q4 2024 Q1 2025: $1.1B Q1 2025 Q2 2025: $1.3B Q2 2025 Q3 2025: $1.4B Q3 2025 Q4 2025: $1.6B Q4 2025 Q1 2026: $2.0B $2.0B Q1 2026 Q2 2026: $3.3B Q2 2026

Holdings 176 stocks · $2.0B
LASR Nlight Inc. 5.60% 1,922,740 $109.6M Add +3.5%
VICR Vicor Corp. 4.29% 522,000 $84.0M Reduce -8.4%
VRT Vertiv Holdings Co. Class A 3.65% 285,250 $71.5M No change
PDFS PDF Solutions Inc. 3.38% 2,022,700 $66.2M Add +2.9%
AIP Arteris Inc. 3.32% 3,952,500 $65.0M Add +15.9%
FORM Formfactor Inc. 2.99% 603,500 $58.5M Reduce -13.1%
VSH Vishay Intertechnology Inc. 2.69% 2,920,000 $52.6M Add +22.9%
LINC Lincoln Educational Services 2.66% 1,277,500 $52.0M Add +13.6%
ODC Oil-Dri Corp. of America 2.25% 677,500 $44.1M Add +6.7%
NVMI Nova Ltd. 2.05% 92,150 $40.0M Reduce -17.5%
UTI Universal Technical Institut 1.90% 1,030,000 $37.2M Add +27.6%
SMCI Super Micro Computer Inc. 1.88% 1,616,500 $36.8M Add +17.1%
THR Thermon Group Holdings Inc. 1.63% 632,500 $31.9M Add +2.0%
TDUP Thredup Inc. Class A 1.55% 9,275,000 $30.4M Add +52.7%
VECO Veeco Instruments Inc. 1.52% 880,000 $29.8M Add +9.3%
TTI Tetra Technologies Inc. 1.47% 3,375,000 $28.8M Add +42.1%
MKSI MKS Inc. 1.41% 120,000 $27.6M Reduce -8.1%
VPG Vishay Precision Group 1.38% 620,000 $26.9M Reduce -5.7%
COHR Coherent Corp. 1.28% 105,500 $25.1M Reduce -23.3%
ARLO Arlo Technologies Inc. 1.28% 1,760,000 $25.0M Add +14.3%
PLAB Photronics Inc. 1.25% 605,000 $24.4M Reduce -21.9%
CTRI Centuri Holdings Inc. 1.22% 817,628 $23.9M Add +2.5%
CECO Ceco Environmental Corp. 1.18% 387,500 $23.1M Add +29.8%
CRAI Cra International Inc. 1.16% 140,006 $22.7M Add +41.8%
ASUR Asure Software Inc. 1.15% 2,607,500 $22.4M Add +1.5%
PSN Parsons Corp. 1.13% 409,000 $22.2M Add +26.2%
HII Huntington Ingalls Industrie 1.07% 55,250 $21.0M Add +9.4%
AKAM Akamai Technologies Inc. 1.05% 178,500 $20.5M Add +14.1%
CLH Clean Harbors Inc. 1.01% 68,856 $19.7M No change
NVT Nvent Electric PLC 0.93% 154,500 $18.3M No change
ATRO Astronics Corp. 0.93% 272,500 $18.2M No change
GENI Genius Sports Ltd. 0.91% 4,000,000 $17.7M Add +48.7%
WTTR Select Water Solutions Inc. 0.90% 1,155,000 $17.7M Add +49.0%
GRC Gorman-Rupp Co. 0.87% 272,500 $16.9M Add +4.8%
MTRX Matrix Service Co. 0.84% 1,435,000 $16.5M No change
VITL Vital Farms Inc. 0.83% 1,150,000 $16.2M Add +67.9%
ADTN Adtran Holdings Inc. 0.79% 1,228,500 $15.5M Reduce -15.1%
ASPN Aspen Aerogels Inc. 0.79% 4,518,775 $15.5M Add +3.8%
BRKR Bruker Corp. 0.78% 424,250 $15.3M Add +16.3%
TNC Tennant Co. 0.78% 229,000 $15.2M Add +239.3%
VSAT Viasat Inc. 0.77% 330,600 $15.1M No change
KLAC KLA Corp. 0.77% 10,250 $15.1M Reduce -21.1%
LH Labcorp Holdings Inc. 0.77% 56,313 $15.0M No change
ECG Everus Construction Group 0.76% 126,500 $14.9M No change
SOLS Solstice Adv Materials Inc. 0.73% 187,500 $14.3M Add +7.1%
GNRC Generac Holdings Inc. 0.72% 72,450 $14.2M Add +110.0%
WAB Wabtec Corp. 0.71% 55,750 $13.9M No change
ENTG Entegris Inc. 0.70% 117,000 $13.7M Reduce -38.9%
ECVT Ecovyst Inc. 0.67% 1,020,000 $13.1M No change
MKL Markel Group Inc. 0.66% 6,700 $12.8M Add +7.6%
TMO Thermo Fisher Scientific Inc. 0.63% 25,250 $12.4M No change
J Jacobs Solutions Inc. 0.62% 96,000 $12.2M Add +65.5%
BWXT BWX Technologies Inc. 0.62% 59,000 $12.1M Add +63.9%
MDU Mdu Resources Group Inc. 0.59% 557,500 $11.6M Add +2.9%
EQIX Equinix Inc. 0.56% 11,200 $11.0M Add +4.2%
MYRG MYR Group Inc./Delaware 0.56% 38,600 $10.9M No change
BFAM Bright Horizons Family Solut 0.54% 129,000 $10.6M No change
ESOA Energy Services of America 0.54% 800,000 $10.5M Add +36.6%
CAMT Camtek Ltd. 0.52% 66,500 $10.1M Reduce -11.9%
TRNS Transcat Inc. 0.49% 130,500 $9.6M Add +4.9%
UIS Unisys Corp. 0.47% 4,428,000 $9.2M Reduce -8.0%
TER Teradyne Inc. 0.44% 29,000 $8.6M Reduce -3.3%
TTMI TTM Technologies 0.44% 87,500 $8.5M Reduce -52.8%
CGNX Cognex Corp. 0.43% 173,000 $8.5M No change
GILD Gilead Sciences Inc. 0.39% 55,000 $7.7M No change
ASML ASML Holding NV-NY Reg SHS filed as ASML HLDG NV 0.39% 5,800 $7.7M Add +5.5%
MASS 908 Devices Inc. 0.39% 1,240,000 $7.6M Add +61.0%
MTN Vail Resorts Inc. 0.39% 59,000 $7.6M No change
EVLV Evolv Technologies Holdings 0.39% 1,250,000 $7.6M Add +127.3%
BSY Bentley Systems Inc. Class B 0.39% 215,000 $7.6M Add +53.6%
MOD Modine Manufacturing Co. 0.38% 34,500 $7.5M Add +38.0%
POCI Precision Optics Corp. Inc. 0.37% 1,670,550 $7.3M Add +132.0%
SMID Smith-Midland Corp. 0.37% 225,000 $7.3M No change
RSSS Research Solutions Inc. 0.36% 3,155,000 $7.1M Add +0.3%
HQL Abrdn Life Sciences Investor 0.36% 429,573 $7.0M Add +6.5%
CRH CRH PLC 0.35% 64,700 $6.8M Add +59.0%
CMCSA Comcast Corp. Class A 0.34% 231,500 $6.6M No change
MTZ Mastec Inc. 0.33% 20,100 $6.5M New
LTH Life Time Group Holdings Inc. 0.33% 240,000 $6.5M Add +108.7%
NTIC Northern Technologies Intl 0.32% 765,000 $6.3M Add +7.3%
ROG Rogers Corp. 0.32% 58,000 $6.2M Reduce -3.3%
HON Honeywell International Inc. 0.32% 27,500 $6.2M No change
BATRK Atlanta Braves Holdings in-C 0.32% 145,000 $6.2M Add +38.1%
UMAC Unusual Machines Inc. 0.31% 485,000 $6.0M New
HLIT Harmonic Inc. 0.31% 668,000 $6.0M Add +22.6%
CSGP Costar Group Inc. 0.29% 142,000 $5.7M Add +134.7%
GLW Corning Inc. 0.29% 42,000 $5.7M No change
CMT Core Molding Technologies Inc. 0.29% 252,371 $5.7M Reduce -0.4%
HQH Abrdn Healthcare Investors 0.28% 311,284 $5.5M Add +6.6%
NVGS Navigator Holdings Ltd. 0.28% 286,000 $5.5M No change
KMX Carmax Inc. 0.27% 128,500 $5.3M Reduce -0.8%
LRCX Lam Research Corp. 0.27% 25,000 $5.3M No change
LPTH Lightpath Technologies Inc. Class A 0.27% 527,500 $5.3M New
SITM Sitime Corp. 0.26% 15,000 $5.2M Reduce -3.2%
AMBQ Ambiq Micro Inc. 0.26% 200,000 $5.1M New
RCAT Red Cat Holdings Inc. 0.25% 380,000 $5.0M New
MRVL Marvell Technology Inc. 0.24% 48,250 $4.8M No change
AAPL Apple Inc. 0.24% 18,450 $4.7M No change
BOX Box Inc. Class A 0.24% 195,000 $4.6M Add +2.6%
MDT Medtronic PLC 0.23% 53,041 $4.6M No change

Show all 176 holdings

Portfolio Sells Q4 2025 → Q1 2026
TTMI TTM Technologies Reduce -52.8% 0.44% −0.37
UIS Unisys Corp. Reduce -8.0% 0.47% −0.37
COHR Coherent Corp. Reduce -23.3% 1.28% −0.32
ENTG Entegris Inc. Reduce -38.9% 0.70% −0.32
PLAB Photronics Inc. Reduce -21.9% 1.25% −0.32
NVMI Nova Ltd. Reduce -17.5% 2.05% −0.27
KLAC KLA Corp. Reduce -21.1% 0.77% −0.23
VPG Vishay Precision Group Reduce -5.7% 1.38% −0.22
AL Sumisho Air Lease Corp. Sold out 0.00% −0.18
ICHR Ichor Holdings Ltd. Reduce -96.8% 0.01% −0.17
GTLS Chart Industries Inc. Sold out 0.00% −0.16
CRI Carter's Inc. Sold out 0.00% −0.14
RPD RAPID7 Inc. Sold out 0.00% −0.09
PENG Penguin Solutions Inc. Reduce -51.2% 0.04% −0.08
SITM Sitime Corp. Reduce -3.2% 0.26% −0.08
UCTT Ultra Clean Holdings Inc. Reduce -91.7% 0.02% −0.08
MXL Maxlinear Inc. Reduce -17.9% 0.10% −0.05
LUV Southwest Airlines Co. Sold out 0.00% −0.05
CMRC Commerce.com Inc. Reduce -32.7% 0.03% −0.05
KMX Carmax Inc. Reduce -0.8% 0.27% −0.04
DGX Quest Diagnostics Inc. Reduce -40.0% 0.05% −0.04
CMT Core Molding Technologies Inc. Reduce -0.4% 0.29% −0.03
EHAB Enhabit Inc. Sold out 0.00% −0.03
ROG Rogers Corp. Reduce -3.3% 0.32% −0.03
P Everpure Inc. Class A Sold out 0.00% −0.02
LAB Standard Biotools Inc. Reduce -83.6% 0.00% −0.02
FEIM Frequency Electronics Inc. Reduce -10.0% 0.02% −0.01
COHU Cohu Inc. Reduce -10.3% 0.20% −0.01
ADTN Adtran Holdings Inc. Reduce -15.1% 0.79% −0.01
DD Dupont DE Nemours Inc. Reduce -2.9% 0.04% −0.00
KVHI KVH Industries Inc. Reduce -1.3% 0.18% +0.00
CAMT Camtek Ltd. Reduce -11.9% 0.52% +0.01
TER Teradyne Inc. Reduce -3.3% 0.44% +0.07
MKSI MKS Inc. Reduce -8.1% 1.41% +0.09
VICR Vicor Corp. Reduce -8.4% 4.29% +0.35
FORM Formfactor Inc. Reduce -13.1% 2.99% +0.54

Portfolio Buys Q4 2025 → Q1 2026
LASR Nlight Inc. Add +3.5% 5.60% +1.20
LINC Lincoln Educational Services Add +13.6% 2.66% +0.94
UTI Universal Technical Institut Add +27.6% 1.90% +0.57
VSH Vishay Intertechnology Inc. Add +22.9% 2.69% +0.51
TNC Tennant Co. Add +239.3% 0.78% +0.46
GNRC Generac Holdings Inc. Add +110.0% 0.72% +0.43
WTTR Select Water Solutions Inc. Add +49.0% 0.90% +0.39
MTZ Mastec Inc. New 0.33% +0.33
UMAC Unusual Machines Inc. New 0.31% +0.31
ODC Oil-Dri Corp. of America Add +6.7% 2.25% +0.29
LPTH Lightpath Technologies Inc. Class A New 0.27% +0.27
AMBQ Ambiq Micro Inc. New 0.26% +0.26
RCAT Red Cat Holdings Inc. New 0.25% +0.25
ESOA Energy Services of America Add +36.6% 0.54% +0.23
BWXT BWX Technologies Inc. Add +63.9% 0.62% +0.22
SOLS Solstice Adv Materials Inc. Add +7.1% 0.73% +0.19
AKAM Akamai Technologies Inc. Add +14.1% 1.05% +0.18
POCI Precision Optics Corp. Inc. Add +132.0% 0.37% +0.18
THR Thermon Group Holdings Inc. Add +2.0% 1.63% +0.17
MOD Modine Manufacturing Co. Add +38.0% 0.38% +0.17
J Jacobs Solutions Inc. Add +65.5% 0.62% +0.14
EVLV Evolv Technologies Holdings Add +127.3% 0.39% +0.14
LTH Life Time Group Holdings Inc. Add +108.7% 0.33% +0.14
SYNA Synaptics Inc. New 0.13% +0.13
MASS 908 Devices Inc. Add +61.0% 0.39% +0.13
ACLS Axcelis Technologies Inc. Add +112.5% 0.20% +0.10
GRC Gorman-Rupp Co. Add +4.8% 0.87% +0.08
HEI Heico Corp. New 0.07% +0.07
VECO Veeco Instruments Inc. Add +9.3% 1.52% +0.07
TTI Tetra Technologies Inc. Add +42.1% 1.47% +0.06
AVAV Aerovironment Inc. New 0.06% +0.06
KOPN Kopin Corp. New 0.06% +0.06
UNH Unitedhealth Group Inc. New 0.06% +0.06
BATRK Atlanta Braves Holdings in-C Add +38.1% 0.32% +0.05
AMBA Ambarella Inc. New 0.05% +0.05
CECO Ceco Environmental Corp. Add +29.8% 1.18% +0.05
BSY Bentley Systems Inc. Class B Add +53.6% 0.39% +0.05
TRNS Transcat Inc. Add +4.9% 0.49% +0.04
EQIX Equinix Inc. Add +4.2% 0.56% +0.04
CSGP Costar Group Inc. Add +134.7% 0.29% +0.04
FTK Flotek Industries Inc. New 0.03% +0.03
WAT Waters Corp. New 0.03% +0.03
STRL Sterling Infrastructure Inc. New 0.03% +0.03
CRH CRH PLC Add +59.0% 0.35% +0.03
ALGM Allegro Microsystems Inc. Add +37.5% 0.09% +0.02
ASML ASML Holding NV-NY Reg SHS Add +5.5% 0.39% +0.02
MEC Mayville Engineering Co. Inc. New 0.02% +0.02
FRPH FRP Holdings Inc. New 0.02% +0.02
LMT Lockheed Martin Corp. Add +50.0% 0.05% +0.02
DPRO Draganfly Inc. New 0.02% +0.02

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 176$3.3BVICR, AIP, VSH, PDFS, LASR
Q1 2026 176$2.0BLASR, VICR, VRT, PDFS, AIP
Q4 2025 162$1.6BLASR, VICR, PDFS, AIP, VRT
Q3 2025 161$1.4BSMCI, TDUP, LASR, PDFS, VRT
Q2 2025 150$1.3BSMCI, TDUP, PDFS, VRT, LASR
Q1 2025 150$1.1BSMCI, VICR, PDFS, FARO, NVMI
Q4 2024 150$1.3BPDFS, SMCI, VICR, UIS, NVMI
Q3 2024 146$1.3BASPN, PDFS, SMCI, VICR, NVMI
Q2 2024 141$1.2BSMCI, ASPN, PDFS, NVMI, FORM
Q1 2024 131$1.1BSMCI, ASPN, PDFS, ENTG, NVMI