Needham Investment Management LLC

In its 13F for Q2 2026 (holdings as of June 30, 2026, filed August 14, 2026), Needham Investment Management LLC reported 176 stock positions worth $3.3 billion. Its top holding was Vicor (VICR) at 6.0% of the portfolio, followed by Arteris (AIP, 5.7%) and Vishay Intertechnology (VSH, 4.9%). Compared with Q1 2026, it opened 11 new positions, sold out of 12, added to 78 and reduced 26. The biggest buy was Vishay Intertechnology (VSH, shares +4%) and the biggest sale an exit from Thermon (THR).

Most Recent 13F
Q2 2026
Location
NEW YORK, NY
CIK
0001167212
Portfolio Value
$3.3B (Q2 2026)
SEC Filing
0000919574-26-005153 ↗ filed Aug 14, 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 Q1 2026 Q2 2026: $3.3B $3.3B Q2 2026

Holdings 176 stocks · $3.3B
VICR Vicor Corp. 5.98% 524,000 $199.0M Add +0.4%
AIP Arteris Inc. 5.74% 3,927,500 $190.8M Reduce -0.6%
VSH Vishay Intertechnology Inc. 4.91% 3,035,610 $163.3M Add +4.0%
PDFS PDF Solutions Inc. 4.40% 2,065,000 $146.2M Add +2.1%
LASR Nlight Inc. 4.17% 1,992,740 $138.7M Add +3.6%
VRT Vertiv Holdings Co. Class A 2.88% 285,750 $95.7M Add +0.2%
VPG Vishay Precision Group 2.70% 599,000 $89.8M Reduce -3.4%
FORM Formfactor Inc. 2.63% 547,500 $87.6M Reduce -9.3%
CECO Ceco Environmental Corp. 2.61% 957,500 $86.9M Add +147.1%
ODC Oil-Dri Corp. of America 2.11% 686,000 $70.1M Add +1.3%
TDUP Thredup Inc. Class A 2.10% 10,175,000 $69.7M Add +9.7%
LINC Lincoln Educational Services 1.99% 1,325,000 $66.1M Add +3.7%
VECO Veeco Instruments Inc. 1.93% 845,850 $64.1M Reduce -3.9%
TTI Tetra Technologies Inc. 1.93% 5,651,500 $64.0M Add +67.5%
SMCI Super Micro Computer Inc. 1.64% 1,858,500 $54.5M Add +15.0%
ELMT The Elmet Group Co. 1.57% 2,639,416 $52.1M New
MKSI MKS Inc. 1.50% 112,250 $49.9M Reduce -6.5%
UTI Universal Technical Institut 1.45% 1,130,000 $48.3M Add +9.7%
NVMI Nova Ltd. 1.45% 88,650 $48.1M Reduce -3.8%
COHR Coherent Corp. 1.10% 92,500 $36.5M Reduce -12.3%
KLAC KLA Corp. 0.93% 102,500 $30.9M No change
CRAI Cra International Inc. 0.92% 215,506 $30.7M Add +53.9%
GENI Genius Sports Ltd. 0.90% 4,925,000 $29.8M Add +23.1%
VSAT Viasat Inc. 0.89% 330,600 $29.7M No change
PSN Parsons Corp. 0.87% 555,000 $29.1M Add +35.7%
AMBQ Ambiq Micro Inc. 0.86% 323,700 $28.6M Add +61.9%
CTRI Centuri Holdings Inc. 0.86% 942,628 $28.5M Add +15.3%
BRKR Bruker Corp. 0.83% 459,250 $27.6M Add +8.3%
ARLO Arlo Technologies Inc. 0.81% 1,995,000 $26.9M Add +13.3%
NVT Nvent Electric PLC 0.79% 154,500 $26.2M No change
WTTR Select Water Solutions Inc. 0.78% 1,300,000 $26.0M Add +12.6%
GRC Gorman-Rupp Co. 0.75% 272,500 $25.0M No change
GNRC Generac Holdings Inc. 0.72% 82,000 $24.0M Add +13.2%
ATRO Astronics Corp. 0.67% 272,500 $22.1M No change
AKAM Akamai Technologies Inc. 0.65% 183,500 $21.7M Add +2.8%
BMI Badger Meter Inc. 0.65% 145,000 $21.5M Add +383.3%
TNC Tennant Co. 0.64% 242,500 $21.2M Add +5.9%
ECG Everus Construction Group 0.63% 126,500 $21.0M No change
CLH Clean Harbors Inc. 0.63% 70,106 $20.9M Add +1.8%
ASUR Asure Software Inc. 0.63% 2,635,000 $20.9M Add +1.1%
ASPN Aspen Aerogels Inc. 0.62% 3,260,800 $20.7M Reduce -27.8%
MTRX Matrix Service Co. 0.59% 1,435,000 $19.7M No change
MYRG MYR Group Inc./Delaware 0.59% 39,000 $19.5M Add +1.0%
PLAB Photronics Inc. 0.57% 585,500 $19.0M Reduce -3.2%
LTRX Lantronix Inc. 0.56% 3,150,000 $18.5M New
ENTG Entegris Inc. 0.55% 101,500 $18.3M Reduce -13.3%
EVLV Evolv Technologies Holdings 0.54% 3,075,000 $17.8M Add +146.0%
BWXT BWX Technologies Inc. 0.51% 87,500 $17.0M Add +48.3%
SOLS Solstice Adv Materials Inc. 0.50% 187,500 $16.6M No change
FELE Franklin Electric Co. Inc. 0.50% 154,200 $16.5M New
LPTH Lightpath Technologies Inc. Class A 0.50% 1,010,000 $16.5M Add +91.5%
BSY Bentley Systems Inc. Class B 0.49% 542,300 $16.2M Add +152.2%
UIS Unisys Corp. 0.49% 4,428,000 $16.2M No change
UMAC Unusual Machines Inc. 0.48% 718,500 $16.0M Add +48.1%
MASS 908 Devices Inc. 0.48% 1,820,620 $15.8M Add +46.8%
HII Huntington Ingalls Industrie 0.48% 56,500 $15.8M Add +2.3%
LH Labcorp Holdings Inc. 0.47% 56,313 $15.8M No change
J Jacobs Solutions Inc. 0.47% 124,500 $15.7M Add +29.7%
ESOA Energy Services of America 0.47% 800,000 $15.5M No change
BATRK Atlanta Braves Holdings in-C 0.45% 287,100 $14.9M Add +98.0%
MRVL Marvell Technology Inc. 0.43% 48,250 $14.4M No change
WAB Wabtec Corp. 0.43% 53,000 $14.3M Reduce -4.9%
MKL Markel Group Inc. 0.43% 7,275 $14.2M Add +8.6%
MDU Mdu Resources Group Inc. 0.42% 665,000 $14.1M Add +19.3%
VITL Vital Farms Inc. 0.42% 1,210,000 $14.1M Add +5.2%
TER Teradyne Inc. 0.42% 29,000 $14.0M No change
EQIX Equinix Inc. 0.41% 13,175 $13.7M Add +17.6%
TTMI TTM Technologies 0.41% 72,500 $13.6M Reduce -17.1%
MTZ Mastec Inc. 0.40% 32,250 $13.4M Add +60.5%
ECVT Ecovyst Inc. 0.38% 1,020,000 $12.7M No change
TRNS Transcat Inc. 0.38% 136,720 $12.7M Add +4.8%
TMO Thermo Fisher Scientific Inc. 0.38% 25,250 $12.7M No change
CGNX Cognex Corp. 0.38% 173,000 $12.5M No change
LTH Life Time Group Holdings Inc. 0.37% 305,000 $12.5M Add +27.1%
ASML ASML Holding NV-NY Reg SHS filed as ASML HLDG NV 0.37% 6,150 $12.2M Add +6.0%
AMBA Ambarella Inc. 0.35% 135,000 $11.6M Add +575.0%
MTN Vail Resorts Inc. 0.35% 84,500 $11.5M Add +43.2%
HLIT Harmonic Inc. 0.34% 700,000 $11.4M Add +4.8%
CYRX Cryoport Inc. 0.34% 717,000 $11.3M Add +99.2%
SITM Sitime Corp. 0.34% 15,000 $11.2M No change
GLW Corning Inc. 0.33% 42,500 $10.9M Add +1.2%
LRCX Lam Research Corp. 0.33% 25,000 $10.8M No change
DDD 3D Systems Corp. filed as 3D SYS CORP DEL 0.32% 3,525,200 $10.6M New
CAMT Camtek Ltd. 0.31% 64,000 $10.4M Reduce -3.8%
CALX Calix Inc. 0.31% 275,000 $10.3M New
MOD Modine Manufacturing Co. 0.31% 38,000 $10.1M Add +10.1%
AVAV Aerovironment Inc. 0.30% 61,000 $10.1M Add +876.0%
CEVA Ceva Inc. 0.30% 210,000 $9.9M Reduce -8.7%
ROG Rogers Corp. 0.27% 55,000 $9.0M Reduce -5.2%
HQL Abrdn Life Sciences Investor 0.27% 443,041 $8.9M Add +3.1%
POCI Precision Optics Corp. Inc. 0.26% 1,670,550 $8.5M No change
MATW Matthews Intl Corp. Class A 0.24% 300,000 $8.1M Add +160.9%
CRH CRH PLC 0.23% 70,700 $7.6M Add +9.3%
RCAT Red Cat Holdings Inc. 0.22% 687,500 $7.3M Add +80.9%
RSSS Research Solutions Inc. 0.22% 3,155,000 $7.3M No change
HQH Abrdn Healthcare Investors 0.21% 320,825 $7.1M Add +3.1%
GILD Gilead Sciences Inc. 0.21% 55,000 $6.9M No change
NTIC Northern Technologies Intl 0.21% 800,000 $6.8M Add +4.6%
DPRO Draganfly Inc. 0.20% 1,250,000 $6.8M Add +1983.3%
KMX Carmax Inc. 0.20% 127,500 $6.7M Reduce -0.8%

Show all 176 holdings

Portfolio Sells Q1 2026 → Q2 2026
THR Thermon Group Holdings Inc. Sold out 0.00% −1.63
PLAB Photronics Inc. Reduce -3.2% 0.57% −0.68
ADTN Adtran Holdings Inc. Reduce -63.4% 0.19% −0.60
NVMI Nova Ltd. Reduce -3.8% 1.45% −0.60
FORM Formfactor Inc. Reduce -9.3% 2.63% −0.36
BFAM Bright Horizons Family Solut Reduce -30.2% 0.19% −0.35
WAB Wabtec Corp. Reduce -4.9% 0.43% −0.28
CAMT Camtek Ltd. Reduce -3.8% 0.31% −0.20
COHR Coherent Corp. Reduce -12.3% 1.10% −0.19
ASPN Aspen Aerogels Inc. Reduce -27.8% 0.62% −0.17
ENTG Entegris Inc. Reduce -13.3% 0.55% −0.15
CMTL Comtech Telecommunications Reduce -22.8% 0.06% −0.14
FIGR Figure Technology Solut Class A Sold out 0.00% −0.13
CMT Core Molding Technologies Inc. Reduce -3.9% 0.17% −0.12
MXL Maxlinear Inc. Sold out 0.00% −0.10
COHU Cohu Inc. Reduce -61.5% 0.11% −0.09
KMX Carmax Inc. Reduce -0.8% 0.20% −0.07
POWI Power Integrations Inc. Sold out 0.00% −0.07
ROG Rogers Corp. Reduce -5.2% 0.27% −0.05
PENG Penguin Solutions Inc. Sold out 0.00% −0.04
TTD Trade Desk Inc./the Class A Reduce -33.3% 0.02% −0.04
DD Dupont DE Nemours Inc. Sold out 0.00% −0.04
EXTR Extreme Networks Inc. Sold out 0.00% −0.03
STRL Sterling Infrastructure Inc. Sold out 0.00% −0.03
TTMI TTM Technologies Reduce -17.1% 0.41% −0.03
CRCL Circle Internet Group Inc. Sold out 0.00% −0.03
SYNA Synaptics Inc. Reduce -18.9% 0.11% −0.02
FTRE Fortrea Holdings Inc. Sold out 0.00% −0.02
MBLY Mobileye Global Inc. Class A Reduce -50.0% 0.01% −0.02
UCTT Ultra Clean Holdings Inc. Sold out 0.00% −0.02
CMRC Commerce.com Inc. Reduce -36.8% 0.01% −0.02
ICHR Ichor Holdings Ltd. Sold out 0.00% −0.01
ACLS Axcelis Technologies Inc. Reduce -16.5% 0.20% +0.00
CEVA Ceva Inc. Reduce -8.7% 0.30% +0.08
MKSI MKS Inc. Reduce -6.5% 1.50% +0.09
VECO Veeco Instruments Inc. Reduce -3.9% 1.93% +0.41
VPG Vishay Precision Group Reduce -3.4% 2.70% +1.32
AIP Arteris Inc. Reduce -0.6% 5.74% +2.42

Portfolio Buys Q1 2026 → Q2 2026
VSH Vishay Intertechnology Inc. Add +4.0% 4.91% +2.22
VICR Vicor Corp. Add +0.4% 5.98% +1.69
ELMT The Elmet Group Co. New 1.57% +1.57
CECO Ceco Environmental Corp. Add +147.1% 2.61% +1.43
PDFS PDF Solutions Inc. Add +2.1% 4.40% +1.01
AMBQ Ambiq Micro Inc. Add +61.9% 0.86% +0.60
LTRX Lantronix Inc. New 0.56% +0.56
TDUP Thredup Inc. Class A Add +9.7% 2.10% +0.54
FELE Franklin Electric Co. Inc. New 0.50% +0.50
TTI Tetra Technologies Inc. Add +67.5% 1.93% +0.46
BMI Badger Meter Inc. Add +383.3% 0.65% +0.41
DDD 3D Systems Corp. New 0.32% +0.32
CALX Calix Inc. New 0.31% +0.31
AMBA Ambarella Inc. Add +575.0% 0.35% +0.30
AVAV Aerovironment Inc. Add +876.0% 0.30% +0.24
LPTH Lightpath Technologies Inc. Class A Add +91.5% 0.50% +0.23
PRIM Primoris Services Corp. New 0.19% +0.19
DPRO Draganfly Inc. Add +1983.3% 0.20% +0.19
CYRX Cryoport Inc. Add +99.2% 0.34% +0.19
UMAC Unusual Machines Inc. Add +48.1% 0.48% +0.17
EVLV Evolv Technologies Holdings Add +146.0% 0.54% +0.15
OCTV Octave Intelligence Class B New 0.15% +0.15
BATRK Atlanta Braves Holdings in-C Add +98.0% 0.45% +0.13
NTSK Netskope Inc. Class A Add +400.0% 0.16% +0.12
MEC Mayville Engineering Co. Inc. Add +450.0% 0.12% +0.11
TWIN Twin Disc Inc. New 0.10% +0.10
EROK Eaglerock Land LLC Class A New 0.10% +0.10
BSY Bentley Systems Inc. Class B Add +152.2% 0.49% +0.10
MATW Matthews Intl Corp. Class A Add +160.9% 0.24% +0.09
MASS 908 Devices Inc. Add +46.8% 0.48% +0.09
MTZ Mastec Inc. Add +60.5% 0.40% +0.07
FTK Flotek Industries Inc. Add +200.0% 0.08% +0.05
BRKR Bruker Corp. Add +8.3% 0.83% +0.05
FLY Firefly Aerospace Inc. Add +154.2% 0.13% +0.05
LTH Life Time Group Holdings Inc. Add +27.1% 0.37% +0.04
KOPN Kopin Corp. Add +50.0% 0.10% +0.04
CLSK Cleanspark Inc. Add +118.8% 0.08% +0.04
HLIT Harmonic Inc. Add +4.8% 0.34% +0.04
GLW Corning Inc. Add +1.2% 0.33% +0.03
HEI Heico Corp. Add +90.0% 0.10% +0.03
MYRG MYR Group Inc./Delaware Add +1.0% 0.59% +0.03
GOOGL Alphabet Inc. Class A Add +80.0% 0.10% +0.02
PWR Quanta Services Inc. New 0.02% +0.02
MSFT Microsoft Corp. New 0.02% +0.02
FRPH FRP Holdings Inc. Add +133.3% 0.03% +0.01
CRM Salesforce Inc. Add +233.3% 0.02% +0.01
CRWD CrowdStrike Holdings Inc. Class A Add +8.1% 0.05% +0.01
NFLX Netflix Inc. Add +233.3% 0.02% +0.01
GNRC Generac Holdings Inc. Add +13.2% 0.72% −0.00
GENI Genius Sports Ltd. Add +23.1% 0.90% −0.01

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