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NIM

Needham Investment Management Portfolio holdings

AUM $3.33B
1-Year Est. Return 163.16%
This Fund
S&P 500
This Quarter Est. Return
+72.57%
1 Year Est. Return
+163.16%
3 Year Est. Return
+424.09%
5 Year Est. Return
+460.72%
10 Year Est. Return
+1,945.3%
AUM
$3.33B
AUM Growth
+$1.37B
Cap. Flow
+$316M
Cap. Flow %
9.5%
Top 10 Hldgs %
38.13%
Holding
188
New
12
Increased
76
Reduced
28
Closed
12

Top Buys

Rank Stock Value
1
ELMT
The Elmet Group
ELMT
+$45.3M
2
CECO icon
Ceco Environmental
CECO
+$45.1M
3
TTI icon
TETRA Technologies
TTI
+$22.3M
4
LTRX icon
Lantronix
LTRX
+$20.2M
5
FELE icon
Franklin Electric
FELE
+$15.5M

Top Sells

Rank Stock Value
1
THR
Thermon Group Holdings
THR
+$31.9M
2
ADTN icon
Adtran
ADTN
+$12.1M
3
FORM icon
FormFactor
FORM
+$7.43M
4
ASPN icon
Aspen Aerogels
ASPN
+$6.17M
5
COHR icon
Coherent
COHR
+$4.6M

Sector Composition

Rank Sector Weight
1 Technology 55.11%
2 Industrials 21.48%
3 Materials 4.41%
4 Consumer Staples 3.88%
5 Consumer Discretionary 3.57%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
AMBQ
26
Ambiq Micro
AMBQ
$1.51B
$28.6M 0.86%
323,700
+123,700
+62% +$7.33M
CTRI icon
27
Centuri Holdings
CTRI
$1.93B
$28.5M 0.86%
942,628
+125,000
+15% +$4.03M
BRKR icon
28
Bruker
BRKR
$9.61B
$27.6M 0.83%
459,250
+35,000
+8% +$1.63M
ARLO icon
29
Arlo Technologies
ARLO
$1.44B
$26.9M 0.81%
1,995,000
+235,000
+13% +$3.18M
NVT icon
30
nVent Electric
NVT
$24.5B
$26.2M 0.79%
154,500
– –
WTTR icon
31
Select Water Solutions
WTTR
$2.63B
$26M 0.78%
1,300,000
+145,000
+13% +$2.54M
GRC icon
32
Gorman-Rupp
GRC
$1.9B
$25M 0.75%
272,500
– –
GNRC icon
33
Generac Holdings
GNRC
$12.2B
$24M 0.72%
82,000
+9,550
+13% +$2.39M
ATRO icon
34
Astronics
ATRO
$2.79B
$22.1M 0.67%
272,500
-54,500
-17% -$3.72M
AKAM icon
35
Akamai
AKAM
$15.4B
$21.7M 0.65%
183,500
+5,000
+3% +$623K
BMI icon
36
Badger Meter
BMI
$3.7B
$21.5M 0.65%
145,000
+115,000
+383% +$15M
TNC icon
37
Tennant Co
TNC
$1.14B
$21.2M 0.64%
242,500
+13,500
+6% +$1.12M
ECG
38
Everus Construction Group
ECG
$5.79B
$21M 0.63%
126,500
– –
CLH icon
39
Clean Harbors
CLH
$16.7B
$20.9M 0.63%
70,106
+1,250
+2% +$369K
ASUR icon
40
Asure Software
ASUR
$245M
$20.9M 0.63%
2,635,000
+27,500
+1% +$240K
ASPN icon
41
Aspen Aerogels
ASPN
$426M
$20.7M 0.62%
3,260,800
-1,257,975
-28% -$6.17M
MTRX icon
42
Matrix Service
MTRX
$282M
$19.7M 0.59%
1,435,000
– –
MYRG icon
43
MYR Group
MYRG
$4.31B
$19.5M 0.59%
39,000
+400
+1% +$164K
PLAB icon
44
Photronics
PLAB
$1.68B
$19M 0.57%
585,500
-19,500
-3% -$825K
LTRX icon
45
Lantronix
LTRX
$272M
$18.5M 0.56%
+3,150,000
New +$20.2M
ENTG icon
46
Entegris
ENTG
$20.6B
$18.3M 0.55%
101,500
-15,500
-13% -$2.24M
EVLV icon
47
Evolv Technologies
EVLV
$913M
$17.8M 0.54%
3,075,000
+1,825,000
+146% +$11.4M
BWXT icon
48
BWX Technologies
BWXT
$13.4B
$17M 0.51%
87,500
+28,500
+48% +$5.94M
SOLS
49
Solstice Advanced Materials
SOLS
$9.34B
$16.6M 0.5%
187,500
– –
FELE icon
50
Franklin Electric
FELE
$4.25B
$16.5M 0.5%
+154,200
New +$15.5M
1
2
3 4 5

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Needham Investment Management's Q2 2026 Portfolio in Review

As of Q2 2026, Needham Investment Management held 188 positions worth $3.33B, up 70% from $1.96B the previous quarter. Its ten largest holdings account for 38% of the portfolio.

Needham Investment Management deployed $316M of net new capital in Q2 2026, opening 12 new positions and adding to 76 existing holdings. Its largest new stake was The Elmet Group: 2,639,416 shares worth $52.1M.

By sector, the portfolio is most concentrated in Technology at 55% of assets, up from 48% a quarter earlier, followed by Industrials and Materials.

On the sell side, the largest reduction was Adtran, an estimated $12.1M trimmed.

  • Needham Investment Management's largest Q2 2026 buy was The Elmet Group: 2,639,416 shares worth $52.1M.
  • Needham Investment Management added most to Ceco Environmental in Q2 2026, an estimated $45.1M increase.
  • Needham Investment Management's biggest Q2 2026 reduction was Adtran, cutting an estimated $12.1M.
  • Needham Investment Management fully exited Thermon Group Holdings in Q2 2026, selling an estimated $31.9M.
  • Needham Investment Management's ten largest holdings make up 38% of its $3.33B portfolio in Q2 2026.
  • Needham Investment Management opened 12 new positions and closed 12 in Q2 2026.
  • Needham Investment Management's portfolio value rose 70% quarter-over-quarter to $3.33B.

Based on Needham Investment Management's 13F filing for Q2 2026, filed 14 Aug 2026.