Howard Hughes Medical Institute holds a focused book of 31 stocks worth $415.8M as of Q1 2026 (disclosed May 15, 2026, a ~45-day 13F lag). This quarter they opened Taiwan Semiconductor-SP ADR and trimmed SS SPDR S&P 500 ETF Trust-US. Their largest long position is SS SPDR S&P 500 ETF Trust-US at 14% of the equity book. Cloning the disclosed picks since 2025 would be +9% (+9.9%/yr). That is a simulation of the disclosed long book, not audited returns.
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/810386/holdings"
Use Arkolith to show HOWARD HUGHES MEDICAL INSTITUTE's latest holdings, largest changes, and filing provenance.
The reported book (valued from quarter-end) returned +20.5%, a 11.1-point gap that is the cost of the ~45-day 13F disclosure lag a real follower can't avoid.
Growth of $10,000 cloning Howard Hughes Medical Institute's disclosed long 13F book, rebalanced on each filing date (so it reflects the ~45-day reporting lag, no look-ahead), total-return basis (dividends reinvested), derived from end-of-day prices. “Their reported book” values the same picks from quarter-end, before they were public. S&P 500 is SPY total return over the same window. Excludes shorts, cash, options and non-13F holdings. Not investment advice.
Top-heavy: focused book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
86% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Other tracked managers holding the same core names as Howard Hughes Medical Institute
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| BlackRock, Inc. | 80 / 31 | $2.2T |
| STATE STREET CORP | 80 / 31 | $1.2T |
| FMR LLC | 80 / 31 | $756.0B |
| MORGAN STANLEY | 80 / 31 | $499.2B |
| JPMORGAN CHASE & CO | 80 / 31 | $492.4B |
| PRICE T ROWE ASSOCIATES INC /MD/ | 80 / 31 | $355.2B |
| BANK OF AMERICA CORP /DE/ | 80 / 31 | $293.7B |
| NORTHERN TRUST CORP | 80 / 31 | $293.3B |
Ranked by how many of Howard Hughes Medical Institute's top 31 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | State STR SPDR S&P 500 ETF T TR UNIT | $57.4M | 88.2K | 13.8% | ▼−63% Reduced · −150K sh | |
| 2 | Nvidia Corporation COM | $56.2M | 322.1K | 13.5% | ▲62× Added · +317K sh | |
| 3 | Apple Inc COM | $50.4M | 198.8K | 12.1% | ▲62× Added · +196K sh | |
| 4 | Alphabet Inc CAP STK CL A | $41.3M | 143.7K | 9.9% | ▲115× Added · +142K sh | |
| 5 | Microsoft Corp COM | $37.9M | 102.3K | 9.1% | ▲64× Added · +101K sh | |
| 6 | Amazon Com Inc COM | $27.7M | 132.9K | 6.7% | ▲63× Added · +131K sh | |
| 7 | Taiwan Semiconductor Manufac SPONSORED ADS | $22.6M | 66.8K | 5.4% | ▲New New position | |
| 8 | Broadcom Inc COM | $20.1M | 65.0K | 4.8% | ▲64× Added · +64K sh | |
| 9 | Meta Platforms Inc CL A | $17.6M | 30.8K | 4.2% | ▲66× Added · +30K sh | |
| 10 | Tesla Inc COM | $15.3M | 41.2K | 3.7% | ▲68× Added · +41K sh | |
| 11 | ASML Hldg NV N Y REGISTRY SHS | $7.1M | 5.4K | 1.7% | ▲New New position | |
| 12 | Netflix Inc. COM | $5.6M | 58.7K | 1.4% | ▲64× Added · +58K sh | |
| 13 | Micron Technology Inc COM | $5.3M | 15.7K | 1.3% | ▲65× Added · +15K sh | |
| 14 | Advanced Micro Devices Inc COM | $4.6M | 22.6K | 1.1% | ▲65× Added · +22K sh | |
| 15 | Palantir Technologies Inc CL A | $4.5M | 30.8K | 1.1% | ▲63× Added · +30K sh | |
| 16 | Cisco Sys Inc COM | $3.9M | 50.3K | 0.9% | ▲59× Added · +49K sh | |
| 17 | Applied Matls Inc COM | $3.8M | 11.0K | 0.9% | ▲64× Added · +11K sh | |
| 18 | Lam Research Corp COM NEW | $3.7M | 17.4K | 0.9% | ▲64× Added · +17K sh | |
| 19 | Oracle Corp COM | $3.5M | 23.9K | 0.8% | ▲66× Added · +23K sh | |
| 20 | International Business Machs COM | $3.2M | 13.0K | 0.8% | ▲65× Added · +13K sh | |
| 21 | Kla Corp COM NEW | $2.7M | 1.8K | 0.6% | ▲65× Added · +2K sh | |
| 22 | Sap SE SPON ADR | $2.5M | 14.9K | 0.6% | ▲New New position | |
| 23 | Intel Corp COM | $2.5M | 57.1K | 0.6% | ▲59× Added · +56K sh | |
| 24 | Texas Instrs Inc COM | $2.5M | 12.6K | 0.6% | ▲65× Added · +12K sh | |
| 25 | Disney Walt Co COM | $2.4M | 24.7K | 0.6% | ▲64× Added · +24K sh | |
| 26 | Salesforce Inc COM | $2.4M | 12.6K | 0.6% | ▲62× Added · +12K sh | |
| 27 | Uber Technologies Inc COM | $2.1M | 28.9K | 0.5% | ▲65× Added · +28K sh | |
| 28 | Qualcomm Inc COM | $1.9M | 14.8K | 0.5% | ▲64× Added · +15K sh | |
| 29 | Booking Holdings Inc COM | $1.9M | 444 | 0.4% | ▲63× Added · +437 sh | |
| 30 | Accenture PLC Ireland SHS CLASS A | $1.7M | 8.6K | 0.4% | ▲64× Added · +8K sh | |
| 31 | Intuit COM | $1.6M | 3.8K | 0.4% | ▲63× Added · +4K sh |
As-of date vs the date the SEC received each filing
Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.