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Needham Investment Management LLC

CIK 1167212 · latest 13F filed 14 August 2026 · Read the filing on EDGAR

Needham Investment Management LLC reported 176 US-listed holdings worth $3.33 billion in its 13F for the quarter ended 30 June 2026, filed 14 August 2026. Its largest: Vicor Corp. (6.0%), Arteris Inc. (5.7%) and Vishay Intertechnology Inc. (4.9%). Against the quarter before, it opened 13 positions, added to 77, trimmed 26 and sold out of 13.

Reported holdings$3.33B+69.9% on Q1 2026
Positions176as many as Q1 2026
The largest ten38.1%of its reported holdings
Latest 13FQ2 2026filed 14 August 2026
Where the money is
Added toTrimmed
VICR6.0%AIP5.7%VSH4.9%PDFS4.4%LASR4.2%VRT2.9%VPG2.7%FORM2.6%CECO2.6%ODC2.1%TDUP2.1%LINC2.0%VECOTTI162 more53.9%

The 14 largest of its 176 positions, each sized by its share of the reported holdings, coloured by the change in shares against Q1 2026.

Reported holdings, quarter by quarter
Q3 2024: $1.30 billion in 146 positions$1.30BQ3 24Q4 2024: $1.30 billion in 150 positions$1.30BQ4 24Q1 2025: $1.07 billion in 150 positions$1.07BQ1 25Q2 2025: $1.25 billion in 150 positions$1.25BQ2 25Q3 2025: $1.43 billion in 161 positions$1.43BQ3 25Q4 2025: $1.58 billion in 162 positions$1.58BQ4 25Q1 2026: $1.96 billion in 176 positions$1.96BQ1 26Q2 2026: $3.33 billion in 176 positions$3.33BQ2 26

What the fund reported holding at each quarter's end; hover a bar for the number of positions

What it did on the quarter

Opened 13Added 77Held 60Trimmed 26Sold out 13
Opened: 13Added: 77Held: 60Trimmed: 26Sold out: 13

Its positions against its 13F for the quarter to 31 March 2026; a change under 0.1% of a position counts as held

Opened 13

  1. Elmet Group Co. the ELMT$52.1 million
  2. Lantronix Inc. LTRX$18.5 million
  3. Franklin Electric Co. Inc. FELE$16.5 million
  4. 3D Systems DDD$10.6 million
  5. Calix, Inc. CALX$10.3 million
  6. Primoris Services Corp. PRIM$6.4 million
  7. Octave Intelligence PLC Ord SHS Class B OCTV$4.9 million
  8. Honeywell International Inc. HON$4.5 million

and 5 more in the table below

Added to 77

  1. Ceco Environmental Corp. Com CECO+570,000 shares · +147%
  2. KLA Corp. KLAC+92,250 shares · +900%
  3. Tetra Technologies Inc. Del TTI+2.3 million shares · +67%
  4. Badger Meter Inc. BMI+115,000 shares · +383%
  5. Ambiq Micro Inc. AMBQ+123,700 shares · +62%
  6. Cra Intl Inc. CRAI+75,500 shares · +54%
  7. Evolv Technologies Hldngs in EVLV+1.8 million shares · +146%
  8. Ambarella Inc. AMBA+115,000 shares · +575%

and 69 more in the table below

Trimmed 26

  1. Adtran Holdings Inc. ADTN-778,500 shares · -63%
  2. Formfactor Inc. FORM-56,000 shares · -9%
  3. Aspen Aerogels Inc. ASPN-1.3 million shares · -28%
  4. Cohu Inc. COHU-80,000 shares · -62%
  5. Coherent Corp. COHR-13,000 shares · -12%
  6. MKS Inc. MKSI-7,750 shares · -6%
  7. Vishay Precision Group Inc. VPG-21,000 shares · -3%
  8. TTM Technologies Inc. TTMI-15,000 shares · -17%

and 18 more in the table below

Sold out of 13

  1. Thermon Group Hldgs Inc. THR$31.9 million last quarter
  2. Honeywell International Inc. HON$6.2 million last quarter
  3. Figure Technology Solutio FIGR$2.5 million last quarter
  4. Maxlinear, Inc. MXL$2.0 million last quarter
  5. Power Integrations Inc. POWI$1.3 million last quarter
  6. Penguin Solutions, Inc. PENG$880,000 last quarter
  7. DuPont de Nemours, Inc. DD$778,600 last quarter
  8. Extreme Networks Inc. EXTR$678,600 last quarter

What it holds

CompanySharesValueOf its bookChange in shares
Vicor Corp. VICR524,000$199.0 million5.98%+2,000
Arteris Inc. AIP3,927,500$190.8 million5.74%-25,000
Vishay Intertechnology Inc. VSH3,035,610$163.3 million4.91%+115,610
PDF Solutions Inc. PDFS2,065,000$146.2 million4.40%+42,300
Nlight Inc. LASR1,992,740$138.7 million4.17%+70,000
Vertiv Holdings Co. VRT285,750$95.7 million2.88%+500
Vishay Precision Group Inc. VPG599,000$89.8 million2.70%-21,000
Formfactor Inc. FORM547,500$87.6 million2.63%-56,000
Ceco Environmental Corp. Com CECO957,500$86.9 million2.61%+570,000
Oil Dri Corp. Amer ODC686,000$70.1 million2.11%+8,500
Thredup Inc. TDUP10,175,000$69.7 million2.10%+900,000
Lincoln Edl Svcs Corp. LINC1,325,000$66.1 million1.99%+47,500
Veeco Instruments Inc. VECO845,850$64.1 million1.93%-34,150
Tetra Technologies Inc. Del TTI5,651,500$64.0 million1.93%+2,276,500
Super Micro Computer, Inc. SMCI1,858,500$54.5 million1.64%+242,000
Elmet Group Co. the ELMT2,639,416$52.1 million1.57%new
MKS Inc. MKSI112,250$49.9 million1.50%-7,750
Universal Technical Institute Inc. UTI1,130,000$48.3 million1.45%+100,000
Nova Ltd NVMI88,650$48.1 million1.45%-3,500
Coherent Corp. COHR92,500$36.5 million1.10%-13,000
KLA Corp. KLAC102,500$30.9 million0.93%+92,250
Cra Intl Inc. CRAI215,506$30.7 million0.92%+75,500
Genius Sports Limited GENI4,925,000$29.8 million0.90%+925,000
Viasat Inc. VSAT330,600$29.7 million0.89%no change
Parsons Corp. PSN555,000$29.1 million0.87%+146,000
Ambiq Micro Inc. AMBQ323,700$28.6 million0.86%+123,700
Centuri Holdings Inc. CTRI942,628$28.5 million0.86%+125,000
Bruker Corp. BRKR459,250$27.6 million0.83%+35,000
Arlo Technologies, Inc. ARLO1,995,000$26.9 million0.81%+235,000
nVent Electric plc NVT154,500$26.2 million0.79%no change
Select Water Solutions Inc. WTTR1,300,000$26.0 million0.78%+145,000
Gorman Rupp Co. GRC272,500$25.0 million0.75%no change
Generac Holdings Inc. GNRC82,000$24.0 million0.72%+9,550
Astronics Corp. ATRO272,500$22.1 million0.67%no change
Akamai Technologies Inc. AKAM183,500$21.7 million0.65%+5,000
Badger Meter Inc. BMI145,000$21.5 million0.65%+115,000
Tennant Co. TNC242,500$21.2 million0.64%+13,500
Everus Construction Group, Inc. ECG126,500$21.0 million0.63%no change
Clean Harbors Inc. CLH70,106$20.9 million0.63%+1,250
Asure Software Inc. ASUR2,635,000$20.9 million0.63%+27,500
Aspen Aerogels Inc. ASPN3,260,800$20.7 million0.62%-1,257,975
Matrix SVC Co. MTRX1,435,000$19.7 million0.59%no change
MYR Group Inc. MYRG39,000$19.5 million0.59%+400
Photronics Inc. PLAB585,500$19.0 million0.57%-19,500
Lantronix Inc. LTRX3,150,000$18.5 million0.56%new
Entegris Inc. ENTG101,500$18.3 million0.55%-15,500
Evolv Technologies Hldngs in EVLV3,075,000$17.8 million0.54%+1,825,000
BWX Technologies, Inc. BWXT87,500$17.0 million0.51%+28,500
Solstice Advanced Materials Inc. SOLS187,500$16.6 million0.50%no change
Franklin Electric Co. Inc. FELE154,200$16.5 million0.50%new
LightPath Technologies Inc LPTH1,010,000$16.5 million0.50%+482,500
Bentley Systems Inc. BSY542,300$16.2 million0.49%+327,300
Unisys Corp. UIS4,428,000$16.2 million0.49%no change
Unusual Machs Inc. UMAC718,500$16.0 million0.48%+233,500
908 Devices Inc. MASS1,820,620$15.8 million0.48%+580,620
Huntington Ingalls Industries, Inc. HII56,500$15.8 million0.48%+1,250
Labcorp Holdings Inc. LH56,313$15.8 million0.47%no change
Jacobs Solutions Inc. J124,500$15.7 million0.47%+28,500
Energy Svcs Acquisition Corp. ESOA800,000$15.5 million0.47%no change
Atlanta Braves Holdings Inc BATRK287,100$14.9 million0.45%+142,100
Marvell Technology, Inc. MRVL48,250$14.4 million0.43%no change
Westinghouse Air Brake Technologies Corp. WAB53,000$14.3 million0.43%-2,750
Markel CP Hldg Co. MKL7,275$14.2 million0.43%+575
MDU Resources Group Inc. MDU665,000$14.1 million0.42%+107,500
Vital Farms Inc. VITL1,210,000$14.1 million0.42%+60,000
Teradyne, Inc. TER29,000$14.0 million0.42%no change
Equinix Inc. EQIX13,175$13.7 million0.41%+1,975
TTM Technologies Inc. TTMI72,500$13.6 million0.41%-15,000
Mastec Inc. MTZ32,250$13.4 million0.40%+12,150
Ecovyst Inc. ECVT1,020,000$12.7 million0.38%no change
Transcat Inc. TRNS136,720$12.7 million0.38%+6,220
Thermo Fisher Scientific Inc. TMO25,250$12.7 million0.38%no change
Cognex Corp. CGNX173,000$12.5 million0.38%no change
Life Time Group Holdings, Inc. LTH305,000$12.5 million0.37%+65,000
ASML Holding N.V. ASML6,150$12.2 million0.37%+350
Ambarella Inc. AMBA135,000$11.6 million0.35%+115,000
Vail Resorts Inc. MTN84,500$11.5 million0.35%+25,500
Harmonic Inc. HLIT700,000$11.4 million0.34%+32,000
Cryoport Inc. CYRX717,000$11.3 million0.34%+357,000
Sitime Corp. SITM15,000$11.2 million0.34%no change
Corning Inc. GLW42,500$10.9 million0.33%+500
Lam Research Corp. LRCX25,000$10.8 million0.33%no change
3D Systems DDD3,525,200$10.6 million0.32%new
Camtek Ltd CAMT64,000$10.4 million0.31%-2,500
Calix, Inc. CALX275,000$10.3 million0.31%new
Modine Manufacturing Co MOD38,000$10.1 million0.31%+3,500
AeroVironment Inc. AVAV61,000$10.1 million0.30%+54,750
Ceva Inc. CEVA210,000$9.9 million0.30%-20,000
Rogers Corp. ROG55,000$9.0 million0.27%-3,000
Tekla Capital Management LLC HQL443,041$8.9 million0.27%+13,468
Precision Optics Corp. Inc. Mass Com New POCI1,670,550$8.5 million0.26%no change
Matthews International Corp. MATW300,000$8.1 million0.24%+185,000
CRH Public Ltd. Co. CRH70,700$7.6 million0.23%+6,000
Red Cat Hldgs Inc. RCAT687,500$7.3 million0.22%+307,500
Research Solutions Inc. RSSS3,155,000$7.3 million0.22%no change
Tekla Healthcare HQH320,825$7.1 million0.21%+9,541
Gilead Sciences, Inc. GILD55,000$6.9 million0.21%no change
Northern Technologies Intl C NTIC800,000$6.8 million0.21%+35,000
Draganfly Inc. DPRO1,250,000$6.8 million0.20%+1,190,000
Carmax Inc. KMX127,500$6.7 million0.20%-1,000
Axcelis Technologies Inc. ACLS35,500$6.7 million0.20%-7,000
Smith Midland Corp. SMID225,000$6.5 million0.20%no change
Bright Horizons Family Solutions Inc. BFAM90,000$6.4 million0.19%-39,000
Primoris Services Corp. PRIM64,250$6.4 million0.19%new
Adtran Holdings Inc. ADTN450,000$6.3 million0.19%-778,500
Applied Materials Inc. AMAT8,250$6.0 million0.18%no change
Legence Corp. LGN67,500$5.8 million0.17%no change
Core Molding Technologies in CMT242,600$5.7 million0.17%-9,771
Comcast Corp. CMCSA231,500$5.7 million0.17%no change
Netskope Inc. NTSK500,000$5.5 million0.16%+400,000
Suro Capital Corp. NSLR426,594$5.3 million0.16%no change
Apple Inc. AAPL18,450$5.3 million0.16%no change
Navigator Hldgs Ltd NVGS286,000$5.3 million0.16%no change
Qnity Electronics, Inc. Q32,500$5.3 million0.16%no change
Box Inc. BOX195,000$5.2 million0.16%no change
Octave Intelligence PLC Ord SHS Class B OCTV300,000$4.9 million0.15%new
Boeing Co. BA22,500$4.9 million0.15%no change
Encompass Health Corp. EHC45,000$4.5 million0.14%no change
Costar Group, Inc. CSGP159,500$4.5 million0.14%+17,500
Firefly Aerospace Inc. FLY152,500$4.5 million0.13%+92,500
Honeywell International Inc. HON20,000$4.5 million0.13%new
Honeywell Aerospace Inc. Com HONA20,000$4.4 million0.13%new
Analog Devices Inc. ADI10,500$4.2 million0.13%+500
Medtronic plc MDT53,041$4.1 million0.12%no change
Mayville Engr Co. Inc. MEC110,000$4.1 million0.12%+90,000
Waterbridge Infrastructure L WBI112,500$3.9 million0.12%+2,500
Lemaitre Vascular Inc. LMAT40,000$3.8 million0.12%no change
Allegro Microsystems, Inc. ALGM55,000$3.8 million0.12%no change
KVH Inds Inc. KVHI385,000$3.8 million0.11%no change
Synaptics Inc. SYNA30,000$3.7 million0.11%-7,000
Cohu Inc. COHU50,000$3.7 million0.11%-80,000
Alpha Pro Tech Ltd APT642,500$3.6 million0.11%no change
Twin Disc Inc. TWIN150,000$3.5 million0.10%new
Eaglerock Land LLC -CL A EROK160,000$3.4 million0.10%new
Heico Corp. New HEI9,500$3.4 million0.10%+4,500
Kopin Corp. KOPN750,000$3.4 million0.10%+250,000
Hewlett Packard Enterprise Co. HPE74,000$3.3 million0.10%no change
Alphabet Inc. GOOGL9,000$3.2 million0.10%+4,000
Brookfield Corporation BN69,440$3.0 million0.09%no change
Flotek Industries Inc FTK120,000$2.8 million0.08%+80,000
Cleanspark Inc. CLSK175,000$2.5 million0.08%+95,000
Becton Dickinson & Co. BDX16,750$2.5 million0.08%no change
Comtech Telecommunications C CMTL906,360$1.9 million0.06%-267,940
Hinge Health Inc. HNGE22,500$1.9 million0.06%no change
UnitedHealth Group Inc. UNH4,000$1.7 million0.05%no change
CrowdStrike Holdings, Inc. CRWD2,000$1.5 million0.05%+150
RTX Corp. RTX8,000$1.5 million0.05%+400
Lindblad Expeditions Hldgs I LIND52,223$1.5 million0.04%no change
Chevron Corp. CVX8,250$1.4 million0.04%no change
Mercury Systems Inc. MRCY10,000$1.2 million0.04%no change
Educational Dev Corp. EDUC800,000$1.2 million0.04%no change
Lockheed Martin Corp. LMT2,250$1.1 million0.03%+750
Klaviyo Inc. KVYO65,000$981,5000.03%no change
Quest Diagnostics Inc. DGX4,500$953,7750.03%no change
Waste Management Inc. WM4,000$891,5200.03%+250
FRP Hldgs Inc. FRPH35,000$874,6510.03%+20,000
Waters Corp. WAT2,266$849,8410.03%no change
Verizon Communications Inc. VZ20,000$846,8000.03%no change
Salesforce, Inc. CRM5,000$783,3000.02%+3,500
Quanta Services, Inc. PWR1,000$720,0400.02%new
Netflix Inc. NFLX10,000$714,0000.02%+7,000
the Trade Desk Inc. TTD34,000$614,7200.02%-17,000
Frequency Electrs Inc. FEIM9,000$597,1500.02%no change
Brookfield Asset Management Ltd. BAM12,570$563,7270.02%no change
Microsoft Corp. MSFT1,500$559,5300.02%new
Caredx Inc. CDNA15,000$427,5000.01%no change
Mobileye Global Inc. MBLY40,000$387,2000.01%-40,000
Kimbell Rty Partners LP KRP25,424$369,4110.01%no change
Bigcommerce Hldgs Inc. CMRC120,000$355,2000.01%-70,000
UGI Corp. UGI10,000$345,4000.01%no change
Versant Media Group, Inc. VSNT9,260$333,4530.01%no change
SLB Limited SLB6,500$302,1850.01%no change
Bellring Brands Inc. BRBR15,000$194,1000.01%no change
Kindercare Learning Companie KLC40,810$173,4420.01%no change
Alight Inc. ALIT300,000$168,0000.01%no change
Standard Biotools Inc. LAB34,435$28,3300.00%no change
Every US-listed position in the fund's 13F for the quarter ended 30 June 2026, by the value it reported.
Read moreChange is shares against its 13F for the quarter before; the 13 it sold out of are in the box above.