NEEDHAM INVESTMENT MANAGEMENT LLC — 13F Holdings & Portfolio
CIK 1167212 · latest 13F-HR filed 2026-08-14
NEEDHAM INVESTMENT MANAGEMENT LLC manages $3.33B in 13F-reported U.S. long-equity assets across 359 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are VICR (5.45%), AIP (4.64%), VSH (3.75%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 13 new positions, exited 13, added to 123, and trimmed 24.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
NEW YORK, NY 10177
$3.33B
Long-equity book
359
Distinct positions
2026-06-30
Filed 2026-08-14
+13 / −13 / ↑123 / ↓24
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- ARTERIS INC$125.9M +193.7%
- VICOR CORP$115.0M +136.8%
- VISHAY INTERTECHNOLOGY INC$110.7M +210.6%
- PDF SOLUTIONS INC$80.0M +120.9%
- CECO ENVIRONMENTAL CORP$63.8M +276.3%
Top Trims
- ADTRAN HOLDINGS INC-$9.2M -59.5%
- PHOTRONICS INC-$5.4M -22.1%
- HUNTINGTON INGALLS INDS INC-$5.2M -24.7%
- BRIGHT HORIZONS FAM SOL IN D-$4.2M -39.8%
- VITAL FARMS INC-$2.2M -13.3%
New Positions
- ELMET GROUP CO (THE)$52.1M
- LANTRONIX INC$18.5M
- FRANKLIN ELEC INC$16.5M
- 3D SYS CORP DEL$10.6M
- CALIX INC$10.3M
Exited Positions
- THERMON GROUP HLDGS INC$31.9M
- HONEYWELL INTL INC$6.2M
- FIGURE TECHNOLOGY SOLUTIO$2.5M
- MAXLINEAR INC$2.0M
- POWER INTEGRATIONS INC$1.3M
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | VICOR CORP | VICR | 925815102 | $181.2M | 5.45% | 477,000 | SH |
| 2 | ARTERIS INC | AIP | 04302A104 | $154.3M | 4.64% | 3,175,000 | SH |
| 3 | VISHAY INTERTECHNOLOGY INC | VSH | 928298108 | $124.6M | 3.75% | 2,317,100 | SH |
| 4 | PDF SOLUTIONS INC | PDFS | 693282105 | $120.7M | 3.63% | 1,705,000 | SH |
| 5 | NLIGHT INC | LASR | 65487K100 | $118.7M | 3.57% | 1,705,000 | SH |
| 6 | VERTIV HOLDINGS CO | VRT | 92537N108 | $87.3M | 2.63% | 260,750 | SH |
| 7 | VISHAY PRECISION GROUP INC | VPG | 92835K103 | $86.8M | 2.61% | 579,000 | SH |
| 8 | CECO ENVIRONMENTAL CORP | CECO | 125141101 | $83.3M | 2.50% | 917,500 | SH |
| 9 | OIL DRI CORP AMER | ODC | 677864100 | $70.1M | 2.11% | 686,000 | SH |
| 10 | THREDUP INC | TDUP | 88556E102 | $69.7M | 2.10% | 10,175,000 | SH |
| 11 | LINCOLN EDL SVCS CORP | LINC | 533535100 | $66.1M | 1.99% | 1,325,000 | SH |
| 12 | TETRA TECHNOLOGIES INC DEL | TTI | 88162F105 | $57.7M | 1.73% | 5,090,900 | SH |
| 13 | FORMFACTOR INC | FORM | 346375108 | $51.6M | 1.55% | 322,500 | SH |
| 14 | UNIVERSAL TECHNICAL INST INC | UTI | 913915104 | $48.3M | 1.45% | 1,130,000 | SH |
| 15 | ELMET GROUP CO (THE) | ELMT | 289395105 | $40.4M | 1.21% | 2,044,400 | SH |
| 16 | SUPER MICRO COMPUTER INC | SMCI | 86800U302 | $36.7M | 1.10% | 1,250,000 | SH |
| 17 | ARTERIS INC | AIP | 04302A104 | $36.6M | 1.10% | 752,500 | SH |
| 18 | VEECO INSTRS INC DEL | VECO | 922417100 | $36.0M | 1.08% | 474,375 | SH |
| 19 | NOVA LTD | NVMI | M7516K103 | $32.4M | 0.97% | 59,650 | SH |
| 20 | CRA INTL INC | CRAI | 12618T105 | $30.7M | 0.92% | 215,506 | SH |
| 21 | GENIUS SPORTS LIMITED | GENI | G3934V109 | $29.1M | 0.87% | 4,800,000 | SH |
| 22 | SELECT WATER SOLUTIONS INC | WTTR | 81617J301 | $26.0M | 0.78% | 1,300,000 | SH |
| 23 | GORMAN RUPP CO | GRC | 383082104 | $25.0M | 0.75% | 272,500 | SH |
| 24 | AMBIQ MICRO INC | AMBQ | 023193105 | $24.6M | 0.74% | 278,990 | SH |
| 25 | KLA CORP | KLAC | 482480100 | $24.1M | 0.73% | 80,000 | SH |
| 26 | COHERENT CORP | COHR | 19247G107 | $23.7M | 0.71% | 60,000 | SH |
| 27 | ARLO TECHNOLOGIES INC | ARLO | 04206A101 | $22.8M | 0.69% | 1,690,000 | SH |
| 28 | VIASAT INC | VSAT | 92552V100 | $22.5M | 0.68% | 250,000 | SH |
| 29 | ASTRONICS CORP | ATRO | 046433108 | $22.1M | 0.67% | 272,500 | SH |
| 30 | BADGER METER INC | BMI | 056525108 | $21.5M | 0.65% | 145,000 | SH |
| 31 | MKS INC. | MKSI | 55306N104 | $21.5M | 0.65% | 48,250 | SH |
| 32 | VISHAY INTERTECHNOLOGY INC | VSH | 928298108 | $21.1M | 0.64% | 392,900 | SH |
| 33 | ASURE SOFTWARE INC | ASUR | 04649U102 | $20.9M | 0.63% | 2,635,000 | SH |
| 34 | FORMFACTOR INC | FORM | 346375108 | $20.8M | 0.63% | 130,000 | SH |
| 35 | CENTURI HOLDINGS INC | CTRI | 155923105 | $20.1M | 0.60% | 665,000 | SH |
| 36 | MATRIX SVC CO | MTRX | 576853105 | $19.7M | 0.59% | 1,435,000 | SH |
| 37 | MYR GROUP INC | MYRG | 55405W104 | $19.5M | 0.59% | 39,000 | SH |
| 38 | AKAMAI TECHNOLOGIES INC | AKAM | 00971T101 | $19.0M | 0.57% | 160,500 | SH |
| 39 | EVERUS CONSTR GROUP | ECG | 300426103 | $18.9M | 0.57% | 114,000 | SH |
| 40 | BRUKER CORP | BRKR | 116794108 | $18.7M | 0.56% | 311,000 | SH |
| 41 | NVENT ELEC PLC | NVT | G6700G107 | $18.2M | 0.55% | 107,500 | SH |
| 42 | EVOLV TECHNOLOGIES HLDNGS IN | EVLV | 30049H102 | $17.8M | 0.54% | 3,075,000 | SH |
| 43 | GENERAC HLDGS INC | GNRC | 368736104 | $17.4M | 0.52% | 59,500 | SH |
| 44 | BWX TECHNOLOGIES INC | BWXT | 05605H100 | $16.1M | 0.48% | 82,500 | SH |
| 45 | LIGHTPATH TECHNOLOGIES INC | LPTH | 532257805 | $15.7M | 0.47% | 959,000 | SH |
| 46 | PDF SOLUTIONS INC | PDFS | 693282105 | $15.6M | 0.47% | 220,000 | SH |
| 47 | ENERGY SERVICES OF AMER CORP | ESOA | 29271Q103 | $15.5M | 0.47% | 800,000 | SH |
| 48 | JACOBS SOLUTIONS INC | J | 46982L108 | $14.5M | 0.44% | 115,000 | SH |
| 49 | UNISYS CORP | UIS | 909214306 | $14.4M | 0.43% | 3,925,000 | SH |
| 50 | LANTRONIX INC | LTRX | 516548203 | $14.1M | 0.42% | 2,400,000 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $3.33B | 359 | 0000919574-26-005153 |
| 2026-03-31 | 2026-05-15 | $1.96B | 348 | 0000919574-26-003133 |
| 2025-12-31 | 2026-02-17 | $1.58B | 322 | 0000919574-26-000997 |
| 2025-09-30 | 2025-11-14 | $1.43B | 315 | 0000919574-25-006767 |