Dan Sundheim Holdings 13F: Latest D1 Capital Partners Portfolio Changes
D1 Capital Partners. Multi-strategy hedge fund founded by former Viking Global CIO.
As of the latest Q1 2026 13F filing, Dan Sundheim (managing D1 Capital Partners) reported a public portfolio value of $11.2B with 44 positions. This page tracks latest holdings, latest 13F changes, top buys, top sells, and top holdings from the public filing. The top recent buy was MELI. The top recent sell was FLS.
Open interactive portfolioLatest 13F portfolio changes
Dan Sundheim holdings 13F summary: the latest D1 Capital Partners portfolio changes show top holdings including MAPLEBEAR, MERCADOLIBRE, JAMES HARDIE INDS, DANAHER CORP DEL, and FLOWSERVE, reported top buys such as MERCADOLIBRE, JAMES HARDIE INDS, DANAHER CORP DEL, and Amazon, and top sells or reductions such as FLOWSERVE, CLEAN HARBORS, KNIGHT-SWIFT TRANSN HLDGS IN, and XPO.
Latest filing metadata: quarter Q1 2026; report date 2026-03-31; filing date 2026-05-15; disclosure source SEC 13F.
Dan Sundheim 13F portfolio and latest holdings overview
Dan Sundheim's Q1 2026 13F holdings show D1 Capital Partners reporting 44 positions with a disclosed portfolio value of $11.2B. For readers searching Dan Sundheim 13F holdings, Dan Sundheim portfolio, D1 Capital Partners holdings, or latest 13F changes, the latest top holdings include MAPLEBEAR, MERCADOLIBRE, JAMES HARDIE INDS, DANAHER CORP DEL, and FLOWSERVE.
The three largest reported positions add up to roughly 18.0%, which helps readers judge portfolio concentration rather than just headline AUM. The largest reported sector exposure is Information Technology at 15.9% of the disclosed portfolio. This makes the page useful for comparing the manager's actual disclosed exposure with market narratives around the same names.
The latest change data highlights reported buys such as MERCADOLIBRE, JAMES HARDIE INDS, DANAHER CORP DEL, Amazon, and NU HLDGS and reported reductions or exits such as FLOWSERVE, CLEAN HARBORS, KNIGHT-SWIFT TRANSN HLDGS IN, XPO, and Meta. Those changes should be read as historical disclosure signals, not as real-time trade alerts.
The filing metadata lists report date 2026-03-31, filing date 2026-05-15, SEC accession 0001172661-26-002178. SEC 13F reports are normally published up to 45 days after quarter end, so the data is best used to understand institutional positioning after the fact rather than to infer today's exact portfolio.
Dan Sundheim portfolio analytics
the top five positions account for 25.8% of disclosed value; the largest sector exposure is Information Technology at 15.9%; reported buy and sell activity implies roughly 98.8% turnover this period; cost-basis P&L across 42 tracked positions averages 104.4% (22/32 currently in profit).
Top reported holdings
| Holding | Reported value | Weight | Quarter change |
|---|---|---|---|
| CART whale holders MAPLEBEAR INC | $845.0M | 7.5% | Held |
| MELI whale holders MERCADOLIBRE INC | $646.1M | 5.8% | Increased |
| JHIUF whale holders JAMES HARDIE INDS PLC | $536.0M | 4.8% | Increased |
| DHR whale holders DANAHER CORP DEL | $436.9M | 3.9% | Increased |
| FLS whale holders FLOWSERVE CORP | $431.8M | 3.8% | Reduced |
| USFD whale holders US FOODS HLDG CORP | $395.0M | 3.5% | Held |
| CLH whale holders CLEAN HARBORS INC | $383.7M | 3.4% | Reduced |
| AMZN whale holders AMAZON COM INC | $376.5M | 3.4% | Increased |
| NU whale holders NU HLDGS LTD | $372.0M | 3.3% | New |
| TMO whale holders THERMO FISHER SCIENTIFIC INC | $356.4M | 3.2% | New |
Top buys
- MELI whale holders — MERCADOLIBRE INC ($646.1M)
- JHIUF whale holders — JAMES HARDIE INDS PLC ($536.0M)
- DHR whale holders — DANAHER CORP DEL ($436.9M)
- AMZN whale holders — AMAZON COM INC ($376.5M)
- NU whale holders — NU HLDGS LTD ($372.0M)
- TMO whale holders — THERMO FISHER SCIENTIFIC INC ($356.4M)
Top sells
- FLS whale holders — FLOWSERVE CORP ($431.8M)
- CLH whale holders — CLEAN HARBORS INC ($383.7M)
- KNX whale holders — KNIGHT-SWIFT TRANSN HLDGS IN ($316.2M)
- XPO whale holders — XPO INC ($250.5M)
- META whale holders — META PLATFORMS INC ($248.3M)
- SCHW whale holders — SCHWAB CHARLES CORP ($221.5M)
Allocation
- Information Technology: 15.9%
- Consumer Discretionary: 14.8%
- Industrials: 13.1%
- Consumer Staples: 11.0%
- Communication Services: 10.1%
- Other: 9.4%
- Health Care: 8.5%
- Financials: 8.2%
Data notes
Report date: 2026-03-31
Disclosure source: SEC 13F
SEC 13F filings are delayed public disclosures and do not include every asset class, short positions, or real-time trades.
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Frequently asked questions
Dan Sundheim 13F Holdings
The Q1 2026 13F profile for Dan Sundheim and D1 Capital Partners shows 44 reported positions, $11.2B in disclosed portfolio value, and top holdings including MAPLEBEAR, MERCADOLIBRE, JAMES HARDIE INDS, DANAHER CORP DEL, and FLOWSERVE.
What is Dan Sundheim buying? Latest 13F changes
The latest tracked change data for Dan Sundheim highlights reported buys such as MERCADOLIBRE, JAMES HARDIE INDS, DANAHER CORP DEL, and Amazon and reported sells or reductions such as FLOWSERVE, CLEAN HARBORS, KNIGHT-SWIFT TRANSN HLDGS IN, and XPO.
D1 Capital Partners top holdings
D1 Capital Partners top holdings are summarized from public disclosures with reported values, weights, portfolio concentration, top buys, top sells, and filing metadata where available.
Dan Sundheim buys and sells
Use the top buys and top sells sections above to compare Dan Sundheim's reported additions, reductions, exits, and latest portfolio activity against other tracked investors.
How delayed is Dan Sundheim's 13F data?
SEC Form 13F requires institutional investment managers with $100M+ in US equities to disclose their holdings quarterly. Read our comprehensive 13F guide for timing, coverage, and limitations. Read the Whale Analyzer 13F guide.