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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
LPTH icon
51
Lightpath Technologies
LPTH
$658M
$16.5M 0.5%
1,010,000
+482,500
+91% +$6.73M
BSY icon
52
Bentley Systems
BSY
$9.88B
$16.2M 0.49%
542,300
+327,300
+152% +$10.6M
UIS icon
53
Unisys
UIS
$182M
$16.2M 0.49%
4,428,000
– –
UMAC icon
54
Unusual Machines
UMAC
$1.28B
$16M 0.48%
718,500
+233,500
+48% +$4.32M
MASS icon
55
908 Devices
MASS
$411M
$15.8M 0.48%
1,820,620
+580,620
+47% +$4.46M
HII icon
56
Huntington Ingalls Industries
HII
$11.4B
$15.8M 0.48%
56,500
+1,250
+2% +$418K
LH icon
57
Labcorp
LH
$26.4B
$15.8M 0.47%
56,313
– –
J icon
58
Jacobs Solutions
J
$16.8B
$15.7M 0.47%
124,500
+28,500
+30% +$3.51M
ESOA icon
59
Energy Services of America
ESOA
$223M
$15.5M 0.47%
800,000
– –
BATRK icon
60
Atlanta Braves Holdings Series B
BATRK
$3.24B
$14.9M 0.45%
287,100
+142,100
+98% +$6.97M
MRVL icon
61
Marvell Technology
MRVL
$207B
$14.4M 0.43%
48,250
– –
WAB icon
62
Wabtec
WAB
$48.2B
$14.3M 0.43%
53,000
-2,750
-5% -$727K
MKL icon
63
Markel Group
MKL
$22.3B
$14.2M 0.43%
7,275
+575
+9% +$1.07M
MDU icon
64
MDU Resources
MDU
$4.19B
$14.1M 0.42%
665,000
+107,500
+19% +$2.34M
VITL icon
65
Vital Farms
VITL
$429M
$14.1M 0.42%
1,210,000
+60,000
+5% +$669K
TER icon
66
Teradyne
TER
$58.4B
$14M 0.42%
29,000
– –
EQIX icon
67
Equinix
EQIX
$103B
$13.7M 0.41%
13,175
+1,975
+18% +$2.11M
TTMI icon
68
TTM Technologies
TTMI
$13.9B
$13.6M 0.41%
72,500
-15,000
-17% -$2.42M
MTZ icon
69
MasTec
MTZ
$20B
$13.4M 0.4%
32,250
+12,150
+60% +$4.64M
ECVT icon
70
Ecovyst
ECVT
$1.11B
$12.7M 0.38%
1,020,000
– –
TRNS icon
71
Transcat
TRNS
$788M
$12.7M 0.38%
136,720
+6,220
+5% +$508K
TMO icon
72
Thermo Fisher Scientific
TMO
$224B
$12.7M 0.38%
25,250
– –
CGNX icon
73
Cognex
CGNX
$10.5B
$12.5M 0.38%
173,000
– –
LTH icon
74
Life Time Group Holdings
LTH
$9.51B
$12.5M 0.37%
305,000
+65,000
+27% +$2.06M
ASML icon
75
ASML
ASML
$679B
$12.2M 0.37%
6,150
+350
+6% +$557K
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.