Daniel Sundheim D1 Capital Partners
Daniel Sundheim is the founder of D1 Capital Partners, a firm active in public equities and private investments with a growth-oriented focus. He previously was a senior investor at Viking Global before launching D1. The firm’s public portfolio is tracked for exposure to consumer, technology, and other high-quality growth businesses.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
James Hardie Industries
JHX
|
+$455M |
| 2 |
Flowserve
FLS
|
+$315M |
| 3 |
Mercado Libre
MELI
|
+$309M |
| 4 |
Kilroy Realty
KRC
|
+$260M |
| 5 |
Clean Harbors
CLH
|
+$237M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Entegris
ENTG
|
+$257M |
| 2 |
ANSS
Ansys
ANSS
|
+$230M |
| 3 |
D.R. Horton
DHI
|
+$198M |
| 4 |
Nu Holdings
NU
|
+$195M |
| 5 |
Toll Brothers
TOL
|
+$183M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Industrials | 24.62% |
| 2 | Consumer Discretionary | 17% |
| 3 | Communication Services | 16.85% |
| 4 | Financials | 14.19% |
| 5 | Consumer Staples | 7.34% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
26
Philip Morris
PM
$293B
| $120M | 1.38% |
740,308
-484,725
| -40% | -$81.6M |
|
27
Wingstop
WING
$3.14B
| $119M | 1.36% |
+472,135
| New | +$147M |
|
28
Alaska Air
ALK
$4.51B
| $116M | 1.34% |
2,338,340
-804,608
| -26% | -$44.7M |
|
29
NVIDIA
NVDA
$5.2T
| $115M | 1.32% |
+616,600
| New | +$107M |
|
|
30
Entegris
ENTG
$22B
| $106M | 1.22% |
1,149,981
-3,019,633
| -72% | -$257M |
|
31
Synopsys
SNPS
$76.2B
| $77.4M | 0.89% |
+156,783
| New | +$88.6M |
|
32
APi Group
APG
$17.8B
| $75.8M | 0.87% |
+2,204,600
| New | +$76.9M |
|
33
GE HealthCare
GEHC
$33.8B
| $74.7M | 0.86% |
994,584
-165,000
| -14% | -$12.3M |
|
34
Louisiana-Pacific
LPX
$5.12B
| $71.4M | 0.82% |
803,906
-1,008,094
| -56% | -$93.1M |
|
|
ECHO
35
EchoStar
ECHO
$25.2B
| $62.8M | 0.72% |
+822,200
| New | +$37.2M |
|
36
Affirm
AFRM
$25.8B
| $59.9M | 0.69% |
820,000
| – | – |
|
37
TransDigm Group
TDG
$66.4B
| $40.6M | 0.47% |
+30,800
| New | +$44M |
|
38
Lexeo Therapeutics
LXEO
$400M
| $6.5M | 0.07% |
978,652
| – | – |
|
39
Amazon
AMZN
$2.79T
| – | – |
-700,887
| Closed | -$154M |
|
|
ANSS
40
DELISTED
Ansys
ANSS
| – | – |
-654,435
| Closed | -$230M |
|
41
Becton Dickinson
BDX
$52.3B
| – | – |
-335,272
| Closed | -$57.8M |
|
|
42
D.R. Horton
DHI
$41.5B
| – | – |
-1,539,410
| Closed | -$198M |
|
43
Elevance Health
ELV
$86.9B
| – | – |
-326,411
| Closed | -$127M |
|
|
44
Toll Brothers
TOL
$13.7B
| – | – |
-1,603,881
| Closed | -$183M |
|
45
Viking Holdings
VIK
$41.4B
| – | – |
-1,150,443
| Closed | -$61.3M |
|
|
SGI
46
Somnigroup International
SGI
$13.6B
| – | – |
-2,666,395
| Closed | -$181M |
|
Similar funds
Daniel Sundheim's Q3 2025 Portfolio in Review
As of Q3 2025, Daniel Sundheim held 46 positions worth $8.71B, up 21% from $7.2B the previous quarter. Its ten largest holdings account for 53% of the portfolio.
Daniel Sundheim deployed $1.37B of net new capital in Q3 2025, opening 13 new positions and adding to 10 existing holdings. Its largest new stake was James Hardie Industries: 18,997,847 shares worth $365M.
By sector, the portfolio is most concentrated in Industrials at 25% of assets, up from 24% a quarter earlier, followed by Consumer Discretionary and Communication Services.
On the sell side, the largest reduction was Entegris, an estimated $257M trimmed.
- Daniel Sundheim's largest Q3 2025 buy was James Hardie Industries: 18,997,847 shares worth $365M.
- Daniel Sundheim added most to Flowserve in Q3 2025, an estimated $315M increase.
- Daniel Sundheim's biggest Q3 2025 reduction was Entegris, cutting an estimated $257M.
- Daniel Sundheim fully exited Ansys in Q3 2025, selling an estimated $230M.
- Daniel Sundheim's ten largest holdings make up 53% of its $8.71B portfolio in Q3 2025.
- Daniel Sundheim opened 13 new positions and closed 8 in Q3 2025.
- Daniel Sundheim's portfolio value rose 21% quarter-over-quarter to $8.71B.
Based on D1 Capital Partners's 13F filing for Q3 2025, filed 14 Nov 2025.