Q2 2026 13F · SEC CIK 1167212

Needham Investment Management LLC

Mutual fund managerFiled 2026-08-14 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $3.3B
Reported positions: 176
Top holdings a year, 3 yrs: +30.1%
Assets under management: $1.8B

Needham Investment Management LLC is a mutual fund manager that reported 176 positions worth $3.3B in its Q2 2026 13F, filed 2026-08-14. Its largest holdings were Vicor Corp (VICR, 6.0%), Arteris Inc (AIP, 5.7%), Vishay Intertechnology Inc (VSH, 4.9%). A portfolio copying its top holdings returned 30.1% a year over the last 3 years, against 20.4% for the S&P 500.

Needham Investment Management LLC holdings largest 50 of 176 positions.

Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Needham Investment Management LLC 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
VICRVicor Corp	6.0%	4.3%	524,000	+0.4%	$199.0M
AIPArteris Inc	5.7%	3.3%	3,927,500	-0.6%	$190.8M
VSHVishay Intertechnology Inc	4.9%	2.7%	3,035,610	+4.0%	$163.3M
PDFSPDF Solutions Inc	4.4%	3.4%	2,065,000	+2.1%	$146.2M
LASRNlight Inc	4.2%	5.6%	1,992,740	+3.6%	$138.7M
VRTVertiv Holdings Co	2.9%	3.7%	285,750	+0.2%	$95.7M
VPGVishay Precision Group Inc	2.7%	1.4%	599,000	-3.4%	$89.8M
FORMFormFactor Inc	2.6%	3.0%	547,500	-9.3%	$87.6M
CECOCeco Environmental Corp	2.6%	1.2%	957,500	+147.1%	$86.9M
ODCOil Dri Corp Amer	2.1%	2.3%	686,000	+1.3%	$70.1M
TDUPThredup Inc	2.1%	1.6%	10,175,000	+9.7%	$69.7M
LINCLincoln Educational Srvcs	2.0%	2.7%	1,325,000	+3.7%	$66.1M
VECOVeeco Instrs Inc Del	1.9%	1.5%	845,850	-3.9%	$64.1M
TTITetra Technologies Inc Del	1.9%	1.5%	5,651,500	+67.5%	$64.0M
SMCISuper Micro Computer Inc	1.6%	1.9%	1,858,500	+15.0%	$54.5M
ELMTElmet Group Co (the)	1.6%	—	2,639,416	—	$52.1M
MKSIMks Inc.	1.5%	1.4%	112,250	-6.5%	$49.9M
UTIUniversal Technical Inst Inc	1.5%	1.9%	1,130,000	+9.7%	$48.3M
NVMINova Ltd	1.4%	2.0%	88,650	-3.8%	$48.1M
COHRCoherent Corp	1.1%	1.3%	92,500	-12.3%	$36.5M
KLACKla Corp	0.9%	0.8%	102,500	+900.0%	$30.9M
CRAICRA Intl Inc	0.9%	1.2%	215,506	+53.9%	$30.7M
GENIGenius Sports Limited	0.9%	0.9%	4,925,000	+23.1%	$29.8M
VSATViasat Inc Com	0.9%	0.8%	330,600	+0.0%	$29.7M
PSNParsons Corp Del	0.9%	1.1%	555,000	+35.7%	$29.1M
AMBQAmbiq Micro Inc	0.9%	—	323,700	—	$28.6M
CTRICenturi Holdings Inc Com Shs	0.9%	1.2%	942,628	+15.3%	$28.5M
BRKRBruker Corp	0.8%	0.8%	459,250	+8.2%	$27.6M
ARLOArlo Technologies Inc Com	0.8%	1.3%	1,995,000	+13.4%	$26.9M
NVTNvent Elec PLC	0.8%	0.9%	154,500	+0.0%	$26.2M
WTTRSelect Water Solutions Inc	0.8%	0.9%	1,300,000	+12.6%	$26.0M
GRCGorman Rupp Co	0.8%	0.9%	272,500	+0.0%	$25.0M
GNRCGenerac Hldgs Inc	0.7%	0.7%	82,000	+13.2%	$24.0M
ATROAstronics Corp	0.7%	0.9%	272,500	+0.0%	$22.1M
AKAMAkamai Technologies Inc	0.7%	1.0%	183,500	+2.8%	$21.7M
BMIBadger Meter Inc	0.6%	—	145,000	—	$21.5M
TNCTennant Co	0.6%	0.8%	242,500	+5.9%	$21.2M
ECGEverus Constr Group	0.6%	0.8%	126,500	+0.0%	$21.0M
CLHClean Harbors Inc	0.6%	1.0%	70,106	+1.8%	$20.9M
ASURAsure Software Inc	0.6%	1.1%	2,635,000	+1.1%	$20.9M
ASPNAspen Aerogels Inc	0.6%	0.8%	3,260,800	-27.8%	$20.7M
MTRXMatrix Svc Co	0.6%	0.8%	1,435,000	+0.0%	$19.7M
MYRGMyr Group Inc Del	0.6%	—	39,000	—	$19.5M
PLABPhotronics Inc	0.6%	1.2%	585,500	-3.2%	$19.0M
LTRXLantronix Inc	0.6%	—	3,150,000	—	$18.5M
ENTGEntegris Inc	0.5%	0.7%	101,500	-13.2%	$18.3M
EVLVEvolv Technologies Holdings	0.5%	—	3,075,000	—	$17.8M
BWXTBwx Technologies Inc	0.5%	—	87,500	—	$17.0M
SOLSSolstice Advanced Matls Inc	0.5%	0.7%	187,500	+0.0%	$16.6M
FELEFranklin Elec Inc	0.5%	—	154,200	—	$16.5M

What Needham Investment Management LLC bought and sold in Q2 2026, against Q1 2026.

New positions

Q1 2026's filing was too long to tell new positions apart.

Added to

KLAC Kla Corp+900.0% shares
CECO Ceco Environmental Corp+147.1% shares
TTI Tetra Technologies Inc Del+67.5% shares
CRAI CRA Intl Inc+53.9% shares
PSN Parsons Corp Del+35.7% shares
GENI Genius Sports Limited+23.1% shares
CTRI Centuri Holdings Inc Com Shs+15.3% shares
SMCI Super Micro Computer Inc+15.0% shares

Reduced

ASPN Aspen Aerogels Inc-27.8% shares
ENTG Entegris Inc-13.2% shares
COHR Coherent Corp-12.3% shares
FORM FormFactor Inc-9.3% shares
MKSI Mks Inc.-6.5% shares

Left the top 50

Share counts compared with the Q1 2026 13F; a split also changes share counts. The latest filing lists more than 50 positions, so a position that left the top 50 may still be held.

How the holdings did against the S&P 500.

1 year: +51.3% /yr; S&P 500 +20.1%
3 years: +30.1% /yr; S&P 500 +20.4%
5 years: +15.3% /yr; S&P 500 +11.6%

A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q2 2026	$3.3B	176
Q1 2026	$2.0B	176
Q4 2025	$1.6B	162
Q3 2025	$1.4B	161
Q2 2025	$1.3B	150
Q1 2025	$1.1B	150
Q4 2024	$1.3B	150
Q3 2024	$1.3B	146
Q2 2024	$1.2B	141
Q1 2024	$1.1B	131
Q4 2023	$792.1M	130
Q3 2023	$588.0M	120

Questions about Needham Investment Management LLC's portfolio

What stocks does Needham Investment Management LLC own?

Needham Investment Management LLC's latest 13F, for Q2 2026 and filed Aug 14, 2026, lists 176 positions worth $3.3B. The largest are Vicor Corp (VICR) at 6.0%, Arteris Inc (AIP) at 5.7%, Vishay Intertechnology Inc (VSH) at 4.9%, PDF Solutions Inc (PDFS) at 4.4% and Nlight Inc (LASR) at 4.2%.

What did Needham Investment Management LLC buy last quarter?

In Q2 2026, Needham Investment Management LLC added Kla Corp (KLAC) (+900.0% shares), Ceco Environmental Corp (CECO) (+147.1% shares) and Tetra Technologies Inc Del (TTI) (+67.5% shares), compared with its Q1 2026 filing.

What did Needham Investment Management LLC sell last quarter?

In Q2 2026, Needham Investment Management LLC cut from its top 50 Thermon Group Hldgs Inc (THR), cut from its top 50 Huntington Ingalls Inds Inc (HII), cut from its top 50 Vital Farms Inc (VITL), cut from its top 50 Adtran Holdings Inc (ADTN), cut from its top 50 Labcorp Holdings Inc (LH), Aspen Aerogels Inc (ASPN) (-27.8% shares), Entegris Inc (ENTG) (-13.2% shares) and Coherent Corp (COHR) (-12.3% shares), compared with its Q1 2026 filing.

How has Needham Investment Management LLC's portfolio performed?

A portfolio copying Needham Investment Management LLC's 20 largest 13F holdings each quarter, from the day each filing was public, returned +30.1% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +51.3% against +20.1%. Over 5 years: +15.3% a year against +11.6%.

When is Needham Investment Management LLC's next 13F filing due?

13F filings are due 45 days after each quarter ends. Needham Investment Management LLC's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.

How much money does Needham Investment Management LLC manage?

Needham Investment Management LLC reported $1.8B of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $3.3B.