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NEEDHAM INVESTMENT MANAGEMENT LLC
Period ended Jun 30, 2026 · Latest filing Aug 14, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Jun 30, 2026: $3,325,608,308
More quarters will appear as history becomes available.
Top holdings
Top 10 at Jun 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- VICOR CORP · COM · 925815102 · shares: $199,004,720
- ARTERIS INC · COM · 04302A104 · shares: $190,837,225
- VISHAY INTERTECHNOLOGY INC · COM · 928298108 · shares: $163,255,106
- PDF SOLUTIONS INC · COM · 693282105 · shares: $146,181,350
- NLIGHT INC · COM · 65487K100 · shares: $138,734,559
- VERTIV HOLDINGS CO · COM CL A · 92537N108 · shares: $95,674,815
- VISHAY PRECISION GROUP INC · COM · 92835K103 · shares: $89,796,090
- FORMFACTOR INC · COM · 346375108 · shares: $87,561,675
- CECO ENVIRONMENTAL CORP · COM · 125141101 · shares: $86,883,550
- OIL DRI CORP AMER · COM · 677864100 · shares: $70,116,060
Reported holdings
359 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| VEECO INSTRS INC DEL | COM | 922417100 | — | 98,050 shares | $7,432,190 |
| RESEARCH SOLUTIONS INC | COM | 761025105 | — | 3,155,000 shares | $7,319,600 |
| VIASAT INC | COM | 92552V100 | — | 80,600 shares | $7,238,686 |
| VEECO INSTRS INC DEL | COM | 922417100 | — | 94,050 shares | $7,128,990 |
| TRANSCAT INC | COM | 893529107 | — | 76,220 shares | $7,070,929 |
| CRH PLC | ORD | G25508105 | — | 65,000 shares | $6,955,000 |
| NORTHERN TECHNOLOGIES INTL C | COM | 665809109 | — | 800,000 shares | $6,848,000 |
| SUPER MICRO COMPUTER INC | COM NEW | 86800U302 | — | 232,500 shares | $6,819,225 |
| KLA CORP | COM NEW | 482480100 | — | 22,500 shares | $6,788,475 |
| DRAGANFLY INC. | COM | 26142Q304 | — | 1,250,000 shares | $6,775,000 |
| AXCELIS TECHNOLOGIES INC | COM NEW | 054540208 | — | 35,500 shares | $6,725,475 |
| SITIME CORP | COM | 82982T106 | — | 9,000 shares | $6,710,040 |
| MKS INC. | COM | 55306N104 | — | 15,000 shares | $6,672,000 |
| THERMO FISHER SCIENTIFIC INC | COM | 883556102 | — | 13,250 shares | $6,643,020 |
| TTM TECHNOLOGIES INC | COM | 87305R109 | — | 35,000 shares | $6,545,700 |
| SMITH MIDLAND CORP | COM | 832156103 | — | 225,000 shares | $6,525,000 |
| ASML HLDG NV | N Y REGISTRY SHS | N07059210 | — | 3,275 shares | $6,515,416 |
| COHERENT CORP | COM | 19247G107 | — | 16,500 shares | $6,508,755 |
| PHOTRONICS INC | COM | 719405102 | — | 200,000 shares | $6,506,000 |
| ABRDN LIFE SCIENCES INVESTOR | SH BEN INT | 87911K100 | — | 321,314 shares | $6,429,493 |
| BRIGHT HORIZONS FAM SOL IN D | COM | 109194100 | — | 90,000 shares | $6,379,200 |
| TETRA TECHNOLOGIES INC DEL | COM | 88162F105 | — | 560,600 shares | $6,351,598 |
| COHERENT CORP | COM | 19247G107 | — | 16,000 shares | $6,311,520 |
| ENTEGRIS INC | COM | 29362U104 | — | 35,000 shares | $6,295,100 |
| CENTURI HOLDINGS INC | COM SHS | 155923105 | — | 200,000 shares | $6,048,000 |
| THERMO FISHER SCIENTIFIC INC | COM | 883556102 | — | 12,000 shares | $6,016,320 |
| APPLIED MATLS INC | COM | 038222105 | — | 8,250 shares | $5,964,750 |
| CRYOPORT INC | COM PAR $0.001 | 229050307 | — | 373,450 shares | $5,863,165 |
| LEGENCE CORP | CL A | 52476L109 | — | 67,500 shares | $5,753,025 |
| ASML HLDG NV | N Y REGISTRY SHS | N07059210 | — | 2,875 shares | $5,719,640 |
| VICOR CORP | COM | 925815102 | — | 15,000 shares | $5,696,700 |
| PHOTRONICS INC | COM | 719405102 | — | 175,000 shares | $5,692,750 |
| BRUKER CORP | COM | 116794108 | — | 94,000 shares | $5,656,920 |
| TRANSCAT INC | COM | 893529107 | — | 60,500 shares | $5,612,585 |
| UNUSUAL MACHS INC | COM SHS | 91532F102 | — | 250,000 shares | $5,575,000 |
| ADTRAN HOLDINGS INC | COM | 00486H105 | — | 400,000 shares | $5,560,000 |
| NETSKOPE INC | CL A | 64119N608 | — | 500,000 shares | $5,470,000 |
| VISHAY INTERTECHNOLOGY INC | COM | 928298108 | — | 101,708 shares | $5,469,856 |
| NOVA LTD | COM | M7516K103 | — | 10,000 shares | $5,429,400 |
| ENTEGRIS INC | COM | 29362U104 | — | 30,000 shares | $5,395,800 |
| ENTEGRIS INC | COM | 29362U104 | — | 30,000 shares | $5,395,800 |
| CRYOPORT INC | COM PAR $0.001 | 229050307 | — | 343,550 shares | $5,393,735 |
| AEROVIRONMENT INC | COM | 008073108 | — | 32,500 shares | $5,364,775 |
| MARVELL TECHNOLOGY INC | COM | 573874104 | — | 18,000 shares | $5,362,020 |
| BOX INC | CL A | 10316T104 | — | 195,000 shares | $5,175,300 |
| GILEAD SCIENCES INC | COM | 375558103 | — | 40,000 shares | $5,053,600 |
| PARSONS CORP DEL | COM | 70202L102 | — | 95,000 shares | $4,977,050 |
| PRIMORIS SVCS CORP | COM | 74164F103 | — | 50,000 shares | $4,956,000 |
| COMCAST CORP NEW | CL A | 20030N101 | — | 200,000 shares | $4,910,000 |
| OCTAVE INTELLIGENCE PLC | ORD SHS CL B | G22845104 | — | 300,000 shares | $4,890,000 |
| GENERAC HLDGS INC | COM | 368736104 | — | 16,500 shares | $4,831,365 |
| ABRDN HEALTHCARE INVESTORS | SH BEN INT | 87911J103 | — | 219,122 shares | $4,816,302 |
| FORMFACTOR INC | COM | 346375108 | — | 30,000 shares | $4,797,900 |
| ELMET GROUP CO (THE) | COMMON STOCK | 289395105 | — | 242,000 shares | $4,777,080 |
| CORE MOLDING TECHNOLOGIES IN | COM | 218683100 | — | 200,100 shares | $4,722,360 |
| COGNEX CORP | COM | 192422103 | — | 65,000 shares | $4,707,300 |
| AEROVIRONMENT INC | COM | 008073108 | — | 28,500 shares | $4,704,495 |
| FRANKLIN ELEC INC | COM | 353514102 | — | 43,300 shares | $4,641,327 |
| ENCOMPASS HEALTH CORP | COM | 29261A100 | — | 45,000 shares | $4,548,600 |
| SITIME CORP | COM | 82982T106 | — | 6,000 shares | $4,473,360 |
| LANTRONIX INC | COM NEW | 516548203 | — | 750,000 shares | $4,410,000 |
| BENTLEY SYS INC | COM CL B | 08265T208 | — | 146,250 shares | $4,371,413 |
| SURO CAPITAL CORP | COM NEW | 86887Q109 | — | 347,884 shares | $4,362,465 |
| TERADYNE INC | COM | 880770102 | — | 9,000 shares | $4,354,560 |
| ANALOG DEVICES INC | COM | 032654105 | — | 10,500 shares | $4,170,285 |
| MAYVILLE ENGR CO INC | COM | 578605107 | — | 110,000 shares | $4,120,600 |
| ARLO TECHNOLOGIES INC | COM | 04206A101 | — | 305,000 shares | $4,111,400 |
| NAVIGATOR HLDGS LTD | SHS | Y62132108 | — | 219,400 shares | $4,087,422 |
| PHOTRONICS INC | COM | 719405102 | — | 125,000 shares | $4,066,250 |
| APPLE INC | COM | 037833100 | — | 13,700 shares | $3,964,232 |
| AMBIQ MICRO INC | COMMON STOCK | 023193105 | — | 44,710 shares | $3,947,893 |
| BOEING CO | COM | 097023105 | — | 18,000 shares | $3,896,460 |
| CLEAN HARBORS INC | COM | 184496107 | — | 13,000 shares | $3,883,750 |
| RED CAT HLDGS INC | COM | 75644T100 | — | 362,500 shares | $3,860,625 |
| WATERBRIDGE INFRASTRUCTURE L | CL A SHS REPSTG | 940923105 | — | 112,500 shares | $3,855,375 |
| LEMAITRE VASCULAR INC | COM | 525558201 | — | 40,000 shares | $3,838,400 |
| ALLEGRO MICROSYSTEMS INC | COM | 01749D105 | — | 55,000 shares | $3,829,100 |
| ASPEN AEROGELS INC | COM | 04523Y105 | — | 600,000 shares | $3,804,000 |
| SYNAPTICS INC | COM | 87157D109 | — | 30,000 shares | $3,726,900 |
| COHU INC | COM | 192576106 | — | 50,000 shares | $3,695,500 |
| CECO ENVIRONMENTAL CORP | COM | 125141101 | — | 40,000 shares | $3,629,600 |
| ALPHA PRO TECH LTD | COM | 020772109 | — | 642,500 shares | $3,610,850 |
| CARMAX INC | COM | 143130102 | — | 67,500 shares | $3,570,075 |
| WABTEC | COM | 929740108 | — | 13,000 shares | $3,504,800 |
| TWIN DISC INC | COM | 901476101 | — | 150,000 shares | $3,480,000 |
| RED CAT HLDGS INC | COM | 75644T100 | — | 325,000 shares | $3,461,250 |
| LABCORP HOLDINGS INC | COM SHS | 504922105 | — | 12,300 shares | $3,444,000 |
| EAGLEROCK LD LLC | CL A SHS REP LTD | 27005A105 | — | 160,000 shares | $3,400,000 |
| KOPIN CORP | COM | 500600101 | — | 750,000 shares | $3,360,000 |
| HEWLETT PACKARD ENTERPRISE C | COM | 42824C109 | — | 74,000 shares | $3,338,140 |
| ELMET GROUP CO (THE) | COMMON STOCK | 289395105 | — | 168,750 shares | $3,331,125 |
| MDU RES GROUP INC | COM | 552690109 | — | 155,000 shares | $3,287,550 |
| TENNANT CO | COM | 880345103 | — | 37,500 shares | $3,282,750 |
| MARKEL GROUP INC | COM | 570535104 | — | 1,675 shares | $3,271,292 |
| ALPHABET INC | CAP STK CL A | 02079K305 | — | 9,000 shares | $3,216,330 |
| CLEAN HARBORS INC | COM | 184496107 | — | 10,706 shares | $3,198,418 |
| CARMAX INC | COM | 143130102 | — | 60,000 shares | $3,173,400 |
| VISHAY PRECISION GROUP INC | COM | 92835K103 | — | 20,000 shares | $2,998,200 |
| PARSONS CORP DEL | COM | 70202L102 | — | 57,000 shares | $2,986,230 |
| KVH INDS INC | COM | 482738101 | — | 300,000 shares | $2,973,000 |