Dan Sundheim
D1 Capital Partners · Crossover growth (public + private) Invests across public and private markets globally as a crossover book that Sundheim built after serving as chief investment officer of Viking Global.
D1 Capital Partners is a New York-based investment firm, founded by Dan Sundheim, that invests in both public and private markets globally.
Showing all 55 reported 13(f) positions; TradingPilot links only the 10 matching its curated universe — a licensed CUSIP↔ticker database was not used. Unmapped positions render as plain text, exactly as filed.
Portfolio allocation (reported 13F equity)
Long US-listed equity positions only; options excluded.
- SPACE EXPLORATION TECHN CORP61.9%
- MAPLEBEAR INC3.1%
- JAMES HARDIE INDS PLC2.1%
- NU HLDGS LTD1.7%
- JOHNSON CONTROLS INTERNATION1.6%
- MERCADOLIBRE INC1.4%
- US FOODS HLDG CORP1.3%
- DANAHER CORP DEL1.2%
- SHERWIN WILLIAMS CO1.2%
- REDDIT INC1.2%
- Others23.3%
Reported 13F equity value — not a return, not AUM
Long US-listed equity positions only; filed with a ~45-day lag.
| # | Ticker | Security (as filed) | % of 13F | Shares | Reported price | Current | Value | Activity |
|---|---|---|---|---|---|---|---|---|
| 1 | — | SPACE EXPLORATION TECHN CORP | 61.9% | 126,042,232 | $170.86 | — | $21.5B | New |
| 2 | — | MAPLEBEAR INC | 3.1% | 22,564,435 | $47.35 | — | $1.1B | Added +0% |
| 3 | — | JAMES HARDIE INDS PLC | 2.1% | 27,545,516 | $26.18 | — | $721.1M | Trimmed −3% |
| 4 | — | NU HLDGS LTD | 1.7% | 44,418,543 | $13.36 | — | $593.4M | Added +72% |
| 5 | — | JOHNSON CONTROLS INTERNATION | 1.6% | 3,751,887 | $146.11 | — | $548.2M | Added +207% |
| 6 | — | MERCADOLIBRE INC | 1.4% | 277,475 | $1,697.39 | — | $471.0M | Trimmed −26% |
| 7 | — | US FOODS HLDG CORP | 1.3% | 4,501,964 | $102.25 | — | $460.3M | Added +5% |
| 8 | — | DANAHER CORP DEL | 1.2% | 2,282,039 | $190.48 | — | $434.7M | New |
| 9 | — | SHERWIN WILLIAMS CO | 1.2% | 1,252,471 | $344.32 | — | $431.3M | Added +164% |
| 10 | — | REDDIT INC | 1.2% | 2,464,411 | $173.58 | — | $427.8M | Added +0% |
| 11 | — | THERMO FISHER SCIENTIFIC INC | 1.2% | 817,123 | $501.36 | — | $409.7M | New |
| 12 | — | KILROY REALTY CORP | 1.1% | 10,498,120 | $37.47 | — | $393.4M | Trimmed −7% |
| 13 | — | CLEAN HARBORS INC | 1.1% | 1,315,501 | $298.75 | — | $393.0M | Trimmed −2% |
| 14 | — | SOMNIGROUP INTERNATIONAL INC | 1.1% | 4,975,364 | $78.40 | — | $390.1M | Added +6% |
| 15 | — | FLOWSERVE CORP | 1.1% | 4,968,713 | $74.16 | — | $368.5M | Trimmed −15% |
| 16 | APP | APPLOVIN CORP | 1.0% | 669,282 | $515.23 | $254.91 -50.5% | $344.8M | Held +0% |
| 17 | META | META PLATFORMS INC | 0.9% | 566,500 | $563.29 | $624.52 +10.9% | $319.1M | New |
| 18 | — | FERGUSON ENTERPRISES INC | 0.9% | 1,282,038 | $237.33 | — | $304.3M | Added +267% |
| 19 | DIS | DISNEY WALT CO | 0.8% | 2,874,400 | $96.25 | $110.91 +15.2% | $276.7M | Added +22% |
| 20 | GOOGL | ALPHABET INC | 0.8% | 738,300 | $357.37 | $283.82 -20.6% | $263.8M | Added +57% |
| 21 | — | SPOTIFY TECHNOLOGY S A | 0.8% | 568,855 | $459.13 | — | $261.2M | Added +67% |
| 22 | — | CARVANA CO | 0.7% | 3,779,517 | $65.82 | — | $248.8M | Added +465% |
| 23 | — | DOORDASH INC | 0.7% | 1,303,705 | $184.53 | — | $240.6M | Trimmed −9% |
| 24 | — | INTUITIVE SURGICAL INC | 0.7% | 574,200 | $397.68 | — | $228.3M | New |
| 25 | — | SCHWAB CHARLES CORP | 0.7% | 2,466,590 | $92.27 | — | $227.6M | Added +5% |
| 26 | — | CAPITAL ONE FINL CORP | 0.6% | 1,093,438 | $200.62 | — | $219.4M | Trimmed −2% |
| 27 | — | LINEAGE INC | 0.6% | 4,736,312 | $43.25 | — | $204.8M | Trimmed −36% |
| 28 | — | MARTIN MARIETTA MATLS INC | 0.6% | 345,060 | $576.70 | — | $199.0M | Added +7% |
| 29 | — | COMPASS INC | 0.5% | 15,224,831 | $12.33 | — | $187.7M | New |
| 30 | — | COUPANG INC | 0.5% | 10,292,141 | $17.37 | — | $178.8M | Trimmed −11% |
| 31 | — | LINDE PLC | 0.5% | 341,538 | $518.94 | — | $177.2M | New |
| 32 | TSLA | TESLA INC | 0.5% | 401,900 | $420.60 | $403.30 -4.1% | $169.0M | New |
| 33 | LSCC | LATTICE SEMICONDUCTOR CORP | 0.5% | 1,084,051 | $152.96 | $103.00 -32.7% | $165.8M | New |
| 34 | — | SEA LTD | 0.5% | 1,678,332 | $95.83 | — | $160.8M | Trimmed −59% |
| 35 | — | AFFIRM HLDGS INC | 0.4% | 1,908,511 | $81.55 | — | $155.6M | Trimmed −1% |
| 36 | AMZN | AMAZON COM INC | 0.4% | 628,082 | $238.34 | $243.79 +2.3% | $149.7M | Trimmed −65% |
| 37 | — | BUILDERS FIRSTSOURCE INC | 0.4% | 1,639,222 | $89.48 | — | $146.7M | New |
| 38 | — | APOLLO GLOBAL MGMT INC | 0.4% | 1,159,000 | $118.31 | — | $137.1M | Held +0% |
| 39 | — | QNITY ELECTRONICS INC | 0.4% | 833,996 | $163.31 | — | $136.2M | New |
| 40 | — | TEXAS INSTRS INC | 0.3% | 405,474 | $298.07 | — | $120.9M | Trimmed −77% |
| 41 | — | MONOLITHIC PWR SYS INC | 0.3% | 85,103 | $1,382.36 | — | $117.6M | New |
| 42 | — | AMRIZE LTD | 0.3% | 2,187,487 | $53.30 | — | $116.6M | New |
| 43 | — | UNITY SOFTWARE INC | 0.3% | 3,572,473 | $28.58 | — | $102.1M | Added +10% |
| 44 | — | LITTELFUSE INC | 0.3% | 224,164 | $455.33 | — | $102.1M | New |
| 45 | — | SHOPIFY INC | 0.3% | 830,891 | $114.18 | — | $94.9M | New |
| 46 | CRWV | COREWEAVE INC | 0.2% | 628,446 | $99.54 | $60.74 -39.0% | $62.6M | New |
| 47 | SNOW | SNOWFLAKE INC | 0.2% | 216,019 | $254.50 | $330.27 +29.8% | $55.0M | New |
| 48 | — | HYPERLIQUID STRATEGIES INC | 0.1% | 6,342,600 | $7.87 | — | $49.9M | Trimmed −21% |
| 49 | — | MADISON AIR SOLUTIONS CORP | 0.1% | 1,250,000 | $39.00 | — | $48.8M | New |
| 50 | — | ANALOG DEVICES INC | 0.1% | 102,040 | $397.17 | — | $40.5M | Trimmed −65% |
| 51 | — | CEREBRAS SYSTEMS INC | 0.1% | 150,000 | $221.00 | — | $33.1M | New |
| 52 | — | ALPHABET INC | 0.1% | 85,000 | $353.33 | — | $30.0M | New |
| 53 | STX | SEAGATE TECHNOLOGY HLDNGS PL | 0.1% | 30,115 | $965.00 | $700.47 -27.4% | $29.1M | New |
| 54 | — | QUANTINUUM INC | 0.1% | 300,000 | $81.74 | — | $24.5M | New |
| 55 | — | DPC HOLDINGS PLC | 0.0% | 125,000 | $49.06 | — | $6.1M | New |
| — | ASML | ASML HLDG NV | — | 0 | — | — | $0 | Sold-Out −100% |
| — | — | AUTODESK INC | — | 0 | — | — | $0 | Sold-Out −100% |
| — | AVGO | BROADCOM INC | — | 0 | — | — | $0 | Sold-Out −100% |
| — | CLS | CELESTICA INC | — | 0 | — | — | $0 | Sold-Out −100% |
| — | — | KNIGHT-SWIFT TRANSN HLDGS IN | — | 0 | — | — | $0 | Sold-Out −100% |
| — | — | LIVE NATION ENTERTAINMENT IN | — | 0 | — | — | $0 | Sold-Out −100% |
| — | NVDA | NVIDIA CORPORATION | — | 0 | — | — | $0 | Sold-Out −100% |
| — | TSM | TAIWAN SEMICONDUCTOR MANUFAC | — | 0 | — | — | $0 | Sold-Out −100% |
| — | — | TOPBUILD COR | — | 0 | — | — | $0 | Sold-Out −100% |
| — | — | XPO INC | — | 0 | — | — | $0 | Sold-Out −100% |
Reported price = value ÷ shares at the quarter-end — an average, NOT the manager's buy/sell price.
Current shows the stock's price change since the filing quarter-end (mapped names only) — it is the STOCK's move, not the manager's realized return (we don't know their cost basis or whether they still hold).
TradingPilot analysis of the reported 13F equity book
As of 2026Q2, Dan Sundheim's reported 13F book holds 55 equity positions; the top 5 are 70% of it.
- SPACE EXPLORATION TECHN CORP — 61.9% of 13F
- MAPLEBEAR INC — 3.1% of 13F
- JAMES HARDIE INDS PLC — 2.1% of 13F
- NU HLDGS LTD — 1.7% of 13F
- JOHNSON CONTROLS INTERNATION — 1.6% of 13F
This quarter: 23 new, 15 added, 15 trimmed, 10 sold out.
- NU HLDGS LTD — Added (+18,527,842 sh)
- KNIGHT-SWIFT TRANSN HLDGS IN — Sold-Out (−5,491,563 sh)
- CARVANA CO — Added (+3,111,085 sh)
- LINEAGE INC — Trimmed (−2,665,917 sh)
- JOHNSON CONTROLS INTERNATION — Added (+2,527,832 sh)