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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) |
|---|---|---|---|---|---|
| VICOR CORP | COM | 925815102 | — | 477,000 shares | $181,155,060 |
| ARTERIS INC | COM | 04302A104 | — | 3,175,000 shares | $154,273,250 |
| VISHAY INTERTECHNOLOGY INC | COM | 928298108 | — | 2,317,100 shares | $124,613,638 |
| PDF SOLUTIONS INC | COM | 693282105 | — | 1,705,000 shares | $120,696,950 |
| NLIGHT INC | COM | 65487K100 | — | 1,705,000 shares | $118,702,100 |
| VERTIV HOLDINGS CO | COM CL A | 92537N108 | — | 260,750 shares | $87,304,315 |
| VISHAY PRECISION GROUP INC | COM | 92835K103 | — | 579,000 shares | $86,797,890 |
| CECO ENVIRONMENTAL CORP | COM | 125141101 | — | 917,500 shares | $83,253,950 |
| OIL DRI CORP AMER | COM | 677864100 | — | 686,000 shares | $70,116,060 |
| THREDUP INC | CL A | 88556E102 | — | 10,175,000 shares | $69,698,750 |
| LINCOLN EDL SVCS CORP | COM | 533535100 | — | 1,325,000 shares | $66,117,500 |
| TETRA TECHNOLOGIES INC DEL | COM | 88162F105 | — | 5,090,900 shares | $57,679,897 |
| FORMFACTOR INC | COM | 346375108 | — | 322,500 shares | $51,577,425 |
| UNIVERSAL TECHNICAL INST INC | COM | 913915104 | — | 1,130,000 shares | $48,330,100 |
| ELMET GROUP CO (THE) | COMMON STOCK | 289395105 | — | 2,044,400 shares | $40,356,456 |
| SUPER MICRO COMPUTER INC | COM NEW | 86800U302 | — | 1,250,000 shares | $36,662,500 |
| ARTERIS INC | COM | 04302A104 | — | 752,500 shares | $36,563,975 |
| VEECO INSTRS INC DEL | COM | 922417100 | — | 474,375 shares | $35,957,625 |
| NOVA LTD | COM | M7516K103 | — | 59,650 shares | $32,386,371 |
| CRA INTL INC | COM | 12618T105 | — | 215,506 shares | $30,666,504 |
| GENIUS SPORTS LIMITED | SHARES CL A | G3934V109 | — | 4,800,000 shares | $29,088,000 |
| SELECT WATER SOLUTIONS INC | CL A COM | 81617J301 | — | 1,300,000 shares | $25,974,000 |
| GORMAN RUPP CO | COM | 383082104 | — | 272,500 shares | $24,999,150 |
| AMBIQ MICRO INC | COMMON STOCK | 023193105 | — | 278,990 shares | $24,634,817 |
| KLA CORP | COM NEW | 482480100 | — | 80,000 shares | $24,136,800 |
| COHERENT CORP | COM | 19247G107 | — | 60,000 shares | $23,668,200 |
| ARLO TECHNOLOGIES INC | COM | 04206A101 | — | 1,690,000 shares | $22,781,200 |
| VIASAT INC | COM | 92552V100 | — | 250,000 shares | $22,452,500 |
| ASTRONICS CORP | COM | 046433108 | — | 272,500 shares | $22,143,350 |
| BADGER METER INC | COM | 056525108 | — | 145,000 shares | $21,515,100 |
| MKS INC. | COM | 55306N104 | — | 48,250 shares | $21,461,600 |
| VISHAY INTERTECHNOLOGY INC | COM | 928298108 | — | 392,900 shares | $21,130,162 |
| ASURE SOFTWARE INC | COM | 04649U102 | — | 2,635,000 shares | $20,921,900 |
| FORMFACTOR INC | COM | 346375108 | — | 130,000 shares | $20,790,900 |
| CENTURI HOLDINGS INC | COM SHS | 155923105 | — | 665,000 shares | $20,109,600 |
| MATRIX SVC CO | COM | 576853105 | — | 1,435,000 shares | $19,659,500 |
| MYR GROUP INC | COM | 55405W104 | — | 39,000 shares | $19,515,600 |
| AKAMAI TECHNOLOGIES INC | COM | 00971T101 | — | 160,500 shares | $18,972,705 |
| EVERUS CONSTR GROUP | COM | 300426103 | — | 114,000 shares | $18,918,300 |
| BRUKER CORP | COM | 116794108 | — | 311,000 shares | $18,715,980 |
| NVENT ELEC PLC | SHS | G6700G107 | — | 107,500 shares | $18,233,075 |
| EVOLV TECHNOLOGIES HLDNGS IN | COM CL A | 30049H102 | — | 3,075,000 shares | $17,835,000 |
| GENERAC HLDGS INC | COM | 368736104 | — | 59,500 shares | $17,422,195 |
| BWX TECHNOLOGIES INC | COM | 05605H100 | — | 82,500 shares | $16,058,625 |
| LIGHTPATH TECHNOLOGIES INC | COM CL A | 532257805 | — | 959,000 shares | $15,679,650 |
| PDF SOLUTIONS INC | COM | 693282105 | — | 220,000 shares | $15,573,800 |
| ENERGY SERVICES OF AMER CORP | COM | 29271Q103 | — | 800,000 shares | $15,472,000 |
| JACOBS SOLUTIONS INC | COM | 46982L108 | — | 115,000 shares | $14,490,000 |
| UNISYS CORP | COM NEW | 909214306 | — | 3,925,000 shares | $14,365,500 |
| LANTRONIX INC | COM NEW | 516548203 | — | 2,400,000 shares | $14,112,000 |
| VITAL FARMS INC | COM | 92847W103 | — | 1,210,000 shares | $14,072,300 |
| TENNANT CO | COM | 880345103 | — | 155,000 shares | $13,568,700 |
| EQUINIX INC | COM | 29444U700 | — | 12,650 shares | $13,186,234 |
| ASPEN AEROGELS INC | COM | 04523Y105 | — | 2,075,000 shares | $13,155,500 |
| HUNTINGTON INGALLS INDS INC | COM | 446413106 | — | 46,000 shares | $12,874,940 |
| ECOVYST INC | COM | 27923Q109 | — | 1,020,000 shares | $12,699,000 |
| CLEAN HARBORS INC | COM | 184496107 | — | 42,500 shares | $12,696,875 |
| SOLSTICE ADVANCED MATLS INC | COM SHS | 83443Q103 | — | 142,500 shares | $12,625,500 |
| LIFE TIME GROUP HOLDINGS INC | COMMON STOCK | 53190C102 | — | 305,000 shares | $12,456,200 |
| PARSONS CORP DEL | COM | 70202L102 | — | 235,000 shares | $12,311,650 |
| 908 DEVICES INC | COM | 65443P102 | — | 1,397,650 shares | $12,159,555 |
| AMBARELLA INC | SHS | G037AX101 | — | 135,000 shares | $11,583,000 |
| HARMONIC INC | COM | 413160102 | — | 700,000 shares | $11,431,000 |
| ATLANTA BRAVES HLDGS INC | COM SER C | 047726302 | — | 218,075 shares | $11,318,093 |
| MKS INC. | COM | 55306N104 | — | 25,000 shares | $11,120,000 |
| VEECO INSTRS INC DEL | COM | 922417100 | — | 145,000 shares | $10,991,000 |
| MARKEL GROUP INC | COM | 570535104 | — | 5,600 shares | $10,936,856 |
| CORNING INC | COM | 219350105 | — | 42,500 shares | $10,855,775 |
| LAM RESEARCH CORP | COM NEW | 512807306 | — | 25,000 shares | $10,833,250 |
| MDU RES GROUP INC | COM | 552690109 | — | 510,000 shares | $10,817,100 |
| WABTEC | COM | 929740108 | — | 40,000 shares | $10,784,000 |
| MASTEC INC | COM | 576323109 | — | 25,250 shares | $10,505,515 |
| UNUSUAL MACHS INC | COM SHS | 91532F102 | — | 468,500 shares | $10,447,550 |
| CAMTEK LTD | ORD | M20791105 | — | 64,000 shares | $10,439,680 |
| CALIX INC | COM | 13100M509 | — | 275,000 shares | $10,263,000 |
| VICOR CORP | COM | 925815102 | — | 27,000 shares | $10,254,060 |
| VISHAY INTERTECHNOLOGY INC | COM | 928298108 | — | 190,000 shares | $10,218,200 |
| FRANKLIN ELEC INC | COM | 353514102 | — | 95,100 shares | $10,193,769 |
| MODINE MFG CO | COM | 607828100 | — | 38,000 shares | $10,146,760 |
| FORMFACTOR INC | COM | 346375108 | — | 63,000 shares | $10,075,590 |
| PDF SOLUTIONS INC | COM | 693282105 | — | 140,000 shares | $9,910,600 |
| CEVA INC | COM | 157210105 | — | 210,000 shares | $9,903,600 |
| TERADYNE INC | COM | 880770102 | — | 20,000 shares | $9,676,800 |
| BENTLEY SYS INC | COM CL B | 08265T208 | — | 316,250 shares | $9,452,713 |
| VAIL RESORTS INC | COM | 91879Q109 | — | 67,500 shares | $9,190,125 |
| LABCORP HOLDINGS INC | COM SHS | 504922105 | — | 32,763 shares | $9,173,640 |
| 3D SYS CORP DEL | COM NEW | 88554D205 | — | 3,025,000 shares | $9,135,500 |
| MARVELL TECHNOLOGY INC | COM | 573874104 | — | 30,250 shares | $9,011,173 |
| ROGERS CORP | COM | 775133101 | — | 55,000 shares | $9,005,150 |
| MKS INC. | COM | 55306N104 | — | 20,000 shares | $8,896,000 |
| NLIGHT INC | COM | 65487K100 | — | 126,775 shares | $8,826,076 |
| NLIGHT INC | COM | 65487K100 | — | 125,000 shares | $8,702,500 |
| PRECISION OPTICS CORP INC MA | COM NEW | 740294400 | — | 1,670,550 shares | $8,519,805 |
| VERTIV HOLDINGS CO | COM CL A | 92537N108 | — | 25,000 shares | $8,370,500 |
| NOVA LTD | COM | M7516K103 | — | 15,000 shares | $8,144,100 |
| MATTHEWS INTL CORP | CL A | 577128101 | — | 300,000 shares | $8,076,000 |
| SUPER MICRO COMPUTER INC | COM NEW | 86800U302 | — | 275,000 shares | $8,065,750 |
| NVENT ELEC PLC | SHS | G6700G107 | — | 47,000 shares | $7,971,670 |
| PARSONS CORP DEL | COM | 70202L102 | — | 150,000 shares | $7,858,500 |
| COGNEX CORP | COM | 192422103 | — | 108,000 shares | $7,821,360 |