What stocks does Dan Sundheim own?

As of Q2 2026, D1 Capital Partners reported 55 positions with a combined 13F value of $34.8B. Its largest stock positions are SPCX ($21.5B), CART ($1.1B) and JHX ($721.1M).

How often does D1 Capital Partners update its portfolio?

D1 Capital Partners files a 13F with the SEC every quarter, due 45 days after quarter end. The latest covers Q2 2026 and was filed Aug 14, 2026. The next one is due by Nov 16, 2026.

What does D1 Capital Partners's 13F leave out?

A 13F lists long positions in US-listed stocks and some options held on the last day of a quarter. It leaves out short positions, most bonds, holdings not listed in the US and anything bought or sold since the quarter ended.

Where does D1 Capital Partners's portfolio data come from?

From the 13F filings D1 Capital Partners makes to the SEC, available on EDGAR. Each quarter shows how positions changed from the one before.

Smart money

D1 Capital Partners L.P.

Dan Sundheim

Return history

Last 4 years · filing-date model

$100,000 to $217,105

$100,000 in SPY: $217,206.

Total return

+117%

Annualized (4Y CAGR)

+21.4%

vs SPY

−0.0 pts/yr

Moves a year

176

Avg hold

7.9 months

17 filings · quarters -7.9% to +21.2%

All time

+9.8% since Nov 15, 2021

Fund size $35B today

Oct 6, 2022 to Oct 5, 2026 · min. 86% quarterly priced · Disclosed book, unaudited · Method

Position-weighted returns use each SEC filing date. Options use underlying-stock proxies, not option premiums; put proxies can lose more than 100%. Cash, shorts, non-13F holdings and trades between filings are excluded.

New SPCX and exited KNX in Q2 2026.

$34.8B in this filing55 positions

Holdings as of Jun 30, 2026. Filed Aug 14, 2026.

Share change vs Mar 31

1SPCXSpace Exploration Techn Co61.91%
$21.5B - 126.0M sharesNEW
2CARTMaplebear Inc3.07%
$1.1B - 22.6M shares+0.0%
3JHXJames Hardie Inds PLC2.07%
$721.1M - 27.5M shares-2.7%
4NUNu Hldgs LTD1.71%
$593.4M - 44.4M shares+71.6%
5JCIJohnson Controls Internati1.58%
$548.2M - 3.8M shares+206.5%
6MELIMercadolibre Inc1.35%
$471.0M - 277K shares-25.7%
7USFDUS Foods HLDG Corp1.32%
$460.3M - 4.5M shares+5.1%
8DHRDanaher Corp Del1.25%
$434.7M - 2.3M shares-1.0%

#	Stock				At Jun 30	Now
1	SPCXSpace Exploration Techn Co	61.91%	$21.5B	NEW	$170.86	$144.57 -15.4%
2	CARTMaplebear Inc	3.07%	$1.1B	+0.0%	$47.35	$49.65 +4.9%
3	JHXJames Hardie Inds PLC	2.07%	$721.1M	-2.7%	$26.18	-
4	NUNu Hldgs LTD	1.71%	$593.4M	+71.6%	$13.36	$14.77 +10.6%
5	JCIJohnson Controls Internati	1.58%	$548.2M	+206.5%	$146.11	$152.44 +4.3%
6	MELIMercadolibre Inc	1.35%	$471.0M	-25.7%	$1697.39	$1848.73 +8.9%
7	USFDUS Foods HLDG Corp	1.32%	$460.3M	+5.1%	$102.25	$98.45 -3.7%
8	DHRDanaher Corp Del	1.25%	$434.7M	-1.0%	$190.48	$224.69 +18.0%

47 more on a paid plan

Unlock the full portfolio and quarterly changes.

Unlock all 47 holdings

What is missing

Top 10 concentration: 77%. This filing does not include cash, short positions, private investments, bonds, or many overseas holdings. Next filing due ~Nov 16, 2026.

Common questions

What stocks does Dan Sundheim own?: As of Q2 2026, D1 Capital Partners reported 55 positions with a combined 13F value of $34.8B. Its largest stock positions are SPCX ($21.5B), CART ($1.1B) and JHX ($721.1M).
How often does D1 Capital Partners update its portfolio?: D1 Capital Partners files a 13F with the SEC every quarter, due 45 days after quarter end. The latest covers Q2 2026 and was filed Aug 14, 2026. The next one is due by Nov 16, 2026.
What does D1 Capital Partners's 13F leave out?: A 13F lists long positions in US-listed stocks and some options held on the last day of a quarter. It leaves out short positions, most bonds, holdings not listed in the US and anything bought or sold since the quarter ended.
Where does D1 Capital Partners's portfolio data come from?: From the 13F filings D1 Capital Partners makes to the SEC, available on EDGAR. Each quarter shows how positions changed from the one before.

Smart money

D1 Capital Partners L.P.

Dan Sundheim

Return history

Last 4 years · filing-date model

$100,000 to $217,105

$100,000 in SPY: $217,206.

Total return

+117%

Annualized (4Y CAGR)

+21.4%

vs SPY

−0.0 pts/yr

Moves a year

176

Avg hold

7.9 months

17 filings · quarters -7.9% to +21.2%

All time

+9.8% since Nov 15, 2021

Fund size $35B today

Oct 6, 2022 to Oct 5, 2026 · min. 86% quarterly priced · Disclosed book, unaudited · Method

New SPCX and exited KNX in Q2 2026.

$34.8B in this filing55 positions

Holdings as of Jun 30, 2026. Filed Aug 14, 2026.

Share change vs Mar 31

1SPCXSpace Exploration Techn Co61.91%
$21.5B - 126.0M sharesNEW
2CARTMaplebear Inc3.07%
$1.1B - 22.6M shares+0.0%
3JHXJames Hardie Inds PLC2.07%
$721.1M - 27.5M shares-2.7%
4NUNu Hldgs LTD1.71%
$593.4M - 44.4M shares+71.6%
5JCIJohnson Controls Internati1.58%
$548.2M - 3.8M shares+206.5%
6MELIMercadolibre Inc1.35%
$471.0M - 277K shares-25.7%
7USFDUS Foods HLDG Corp1.32%
$460.3M - 4.5M shares+5.1%
8DHRDanaher Corp Del1.25%
$434.7M - 2.3M shares-1.0%

#	Stock				At Jun 30	Now
1	SPCXSpace Exploration Techn Co	61.91%	$21.5B	NEW	$170.86	$144.57 -15.4%
2	CARTMaplebear Inc	3.07%	$1.1B	+0.0%	$47.35	$49.65 +4.9%
3	JHXJames Hardie Inds PLC	2.07%	$721.1M	-2.7%	$26.18	-
4	NUNu Hldgs LTD	1.71%	$593.4M	+71.6%	$13.36	$14.77 +10.6%
5	JCIJohnson Controls Internati	1.58%	$548.2M	+206.5%	$146.11	$152.44 +4.3%
6	MELIMercadolibre Inc	1.35%	$471.0M	-25.7%	$1697.39	$1848.73 +8.9%
7	USFDUS Foods HLDG Corp	1.32%	$460.3M	+5.1%	$102.25	$98.45 -3.7%
8	DHRDanaher Corp Del	1.25%	$434.7M	-1.0%	$190.48	$224.69 +18.0%

47 more on a paid plan

Unlock the full portfolio and quarterly changes.

Unlock all 47 holdings

What is missing

Top 10 concentration: 77%. This filing does not include cash, short positions, private investments, bonds, or many overseas holdings. Next filing due ~Nov 16, 2026.

Common questions

What stocks does Dan Sundheim own?: As of Q2 2026, D1 Capital Partners reported 55 positions with a combined 13F value of $34.8B. Its largest stock positions are SPCX ($21.5B), CART ($1.1B) and JHX ($721.1M).
How often does D1 Capital Partners update its portfolio?: D1 Capital Partners files a 13F with the SEC every quarter, due 45 days after quarter end. The latest covers Q2 2026 and was filed Aug 14, 2026. The next one is due by Nov 16, 2026.
What does D1 Capital Partners's 13F leave out?: A 13F lists long positions in US-listed stocks and some options held on the last day of a quarter. It leaves out short positions, most bonds, holdings not listed in the US and anything bought or sold since the quarter ended.
Where does D1 Capital Partners's portfolio data come from?: From the 13F filings D1 Capital Partners makes to the SEC, available on EDGAR. Each quarter shows how positions changed from the one before.

D1 Capital Partners L.P.

Last 4 years · filing-date model

New SPCX and exited KNX in Q2 2026.

Disclosed changes

Common questions

D1 Capital Partners L.P.

Last 4 years · filing-date model

New SPCX and exited KNX in Q2 2026.

Disclosed changes

Common questions