NEEDHAM INVESTMENT MANAGEMENT LLC — 13F Holdings & Portfolio
CIK 1167212 · latest 13F-HR filed 2026-05-15
NEEDHAM INVESTMENT MANAGEMENT LLC manages $1.96B in 13F-reported U.S. long-equity assets across 348 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are LASR (4.87%), VICR (3.91%), VRT (3.34%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 21 new positions, exited 7, added to 96, and trimmed 41.
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.
$1.96B
Long-equity book
348
Distinct positions
2026-03-31
Filed 2026-05-15
+21 / −7 / ↑96 / ↓41
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- NLIGHT INC$40.0M +57.3%
- VERTIV HOLDINGS CO$25.3M +54.7%
- LINCOLN EDL SVCS CORP$24.8M +91.3%
- VICOR CORP$21.6M +34.6%
- FORMFACTOR INC$19.8M +51.1%
Top Trims
- GENIUS SPORTS LIMITED-$11.9M -40.2%
- THREDUP INC-$8.4M -21.6%
- VITAL FARMS INC-$5.6M -25.8%
- TTM TECHNOLOGIES INC-$4.3M -33.3%
- UNISYS CORP-$4.1M -31.0%
New Positions
- MASTEC INC$6.5M
- UNUSUAL MACHS INC$6.0M
- LIGHTPATH TECHNOLOGIES INC$5.3M
- AMBIQ MICRO INC$5.1M
- RED CAT HLDGS INC$5.0M
Exited Positions
- AIR LEASE CORP$2.9M
- CHART INDS INC$2.6M
- CARTERS INC$2.2M
- RAPID7 INC$1.4M
- SOUTHWEST AIRLS CO$820.4K
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 | NLIGHT INC | LASR | 65487K100 | $95.2M | 4.87% | 1,670,000 | SH |
| 2 | VICOR CORP | VICR | 925815102 | $76.5M | 3.91% | 475,000 | SH |
| 3 | VERTIV HOLDINGS CO | VRT | 92537N108 | $65.3M | 3.34% | 260,750 | SH |
| 4 | LINCOLN EDL SVCS CORP | LINC | 533535100 | $52.0M | 2.66% | 1,277,500 | SH |
| 5 | PDF SOLUTIONS INC | PDFS | 693282105 | $51.9M | 2.65% | 1,587,500 | SH |
| 6 | ARTERIS INC | AIP | 04302A104 | $51.4M | 2.63% | 3,125,000 | SH |
| 7 | OIL DRI CORP AMER | ODC | 677864100 | $44.1M | 2.25% | 677,500 | SH |
| 8 | UNIVERSAL TECHNICAL INST INC | UTI | 913915104 | $37.2M | 1.90% | 1,030,000 | SH |
| 9 | VISHAY INTERTECHNOLOGY INC | VSH | 928298108 | $37.0M | 1.89% | 2,055,000 | SH |
| 10 | THERMON GROUP HLDGS INC | THR | 88362T103 | $31.9M | 1.63% | 632,500 | SH |
| 11 | FORMFACTOR INC | FORM | 346375108 | $31.2M | 1.59% | 321,500 | SH |
| 12 | THREDUP INC | TDUP | 88556E102 | $30.4M | 1.55% | 9,275,000 | SH |
| 13 | TETRA TECHNOLOGIES INC DEL | TTI | 88162F105 | $28.8M | 1.47% | 3,375,000 | SH |
| 14 | NOVA LTD | NVMI | M7516K103 | $25.9M | 1.32% | 59,650 | SH |
| 15 | VISHAY PRECISION GROUP INC | VPG | 92835K103 | $25.2M | 1.29% | 580,000 | SH |
| 16 | ARLO TECHNOLOGIES INC | ARLO | 04206A101 | $23.2M | 1.19% | 1,630,000 | SH |
| 17 | SUPER MICRO COMPUTER INC | SMCI | 86800U302 | $22.9M | 1.17% | 1,007,500 | SH |
| 18 | CRA INTL INC | CRAI | 12618T105 | $22.7M | 1.16% | 140,006 | SH |
| 19 | ASURE SOFTWARE INC | ASUR | 04649U102 | $22.4M | 1.15% | 2,607,500 | SH |
| 20 | CECO ENVIRONMENTAL CORP | CECO | 125141101 | $22.2M | 1.13% | 372,500 | SH |
| 21 | CENTURI HOLDINGS INC | CTRI | 155923105 | $18.8M | 0.96% | 642,500 | SH |
| 22 | ASTRONICS CORP | ATRO | 046433108 | $18.2M | 0.93% | 272,500 | SH |
| 23 | SELECT WATER SOLUTIONS INC | WTTR | 81617J301 | $17.7M | 0.90% | 1,155,000 | SH |
| 24 | AKAMAI TECHNOLOGIES INC | AKAM | 00971T101 | $17.5M | 0.90% | 152,500 | SH |
| 25 | GENIUS SPORTS LIMITED | GENI | G3934V109 | $17.2M | 0.88% | 3,875,000 | SH |
| 26 | HUNTINGTON INGALLS INDS INC | HII | 446413106 | $17.1M | 0.87% | 45,000 | SH |
| 27 | GORMAN RUPP CO | GRC | 383082104 | $16.9M | 0.87% | 272,500 | SH |
| 28 | COHERENT CORP | COHR | 19247G107 | $16.7M | 0.85% | 70,000 | SH |
| 29 | MATRIX SVC CO | MTRX | 576853105 | $16.5M | 0.84% | 1,435,000 | SH |
| 30 | VITAL FARMS INC | VITL | 92847W103 | $16.2M | 0.83% | 1,150,000 | SH |
| 31 | VEECO INSTRS INC DEL | VECO | 922417100 | $16.1M | 0.82% | 474,375 | SH |
| 32 | FORMFACTOR INC | FORM | 346375108 | $14.5M | 0.74% | 150,000 | SH |
| 33 | ARTERIS INC | AIP | 04302A104 | $13.6M | 0.70% | 827,500 | SH |
| 34 | EVERUS CONSTR GROUP | ECG | 300426103 | $13.5M | 0.69% | 114,000 | SH |
| 35 | ECOVYST INC | ECVT | 27923Q109 | $13.1M | 0.67% | 1,020,000 | SH |
| 36 | NVENT ELEC PLC | NVT | G6700G107 | $12.7M | 0.65% | 107,500 | SH |
| 37 | CLEAN HARBORS INC | CLH | 184496107 | $11.9M | 0.61% | 41,500 | SH |
| 38 | KLA CORP | KLAC | 482480100 | $11.8M | 0.60% | 8,000 | SH |
| 39 | ADTRAN HOLDINGS INC | ADTN | 00486H105 | $11.7M | 0.60% | 930,600 | SH |
| 40 | BWX TECHNOLOGIES INC | BWXT | 05605H100 | $11.6M | 0.59% | 56,750 | SH |
| 41 | JACOBS SOLUTIONS INC | J | 46982L108 | $11.5M | 0.59% | 90,500 | SH |
| 42 | VIASAT INC | VSAT | 92552V100 | $11.4M | 0.59% | 250,000 | SH |
| 43 | MKS INC. | MKSI | 55306N104 | $11.1M | 0.57% | 48,250 | SH |
| 44 | EQUINIX INC | EQIX | 29444U700 | $11.0M | 0.56% | 11,200 | SH |
| 45 | MYR GROUP INC | MYRG | 55405W104 | $10.9M | 0.56% | 38,600 | SH |
| 46 | SOLSTICE ADVANCED MATLS INC | SOLS | 83443Q103 | $10.9M | 0.55% | 142,500 | SH |
| 47 | PARSONS CORP DEL | PSN | 70202L102 | $10.6M | 0.54% | 195,000 | SH |
| 48 | PHOTRONICS INC | PLAB | 719405102 | $10.5M | 0.54% | 260,000 | SH |
| 49 | ENERGY SERVICES OF AMER CORP | ESOA | 29271Q103 | $10.5M | 0.54% | 800,000 | SH |
| 50 | BRUKER CORP | BRKR | 116794108 | $10.5M | 0.54% | 290,000 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 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 |