Alta Partners Management Company, L.P. holds a concentrated book of 2 reported positions worth $127.3M as of Q2 2026 (disclosed Jul 22, 2026, a ~22-day 13F lag). Their largest long position is Tyra Biosciences Inc at 96% of the reported non-option book.
Top-heavy: concentrated book
Excluding Tyra Biosciences Inc (96% of the book), the rest is a concentrated book:
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
100% 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.
Other tracked managers holding the same core names as Alta Partners Management Company, L.P.
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| Farallon Capital Management, L.L.C. | 2 / 2 | $137.3M |
| Algert Global LLC | 2 / 2 | $15.8M |
| Virtus Investment Advisers, LLC | 2 / 2 | $774K |
| Susquehanna Portfolio Strategies, LLC | 2 / 2 | $5.0M |
| Janus Henderson Group Ltd. | 2 / 2 | $149.4M |
| Winton Group Ltd | 2 / 2 | $2.1M |
| XTX Topco Ltd | 2 / 2 | $3.8M |
| Chung Wu Investment Group, LLC | 2 / 2 | $99K |
Ranked by the share of each fund's own book sitting in the names it shares with Alta Partners Management Company, L.P.: only funds sharing at least a tenth of the book qualify. Index giants, bank custody books and market makers are excluded. They hold everything, so their overlap says nothing.
Bars show each position's share of the portfolio. Click a row for its position history.
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/2054419/holdings"
Use Arkolith to show Alta Partners Management Company, L.P.'s latest holdings, largest changes, and filing provenance.
As-of date vs the date the SEC received each filing
Reported 13F total per quarter. Raw filing totals can include option notional.
| Quarter | As of | Filed | Lag | Positions | Value | Form |
|---|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Jul 22, 2026 | 22d | 2 | $127.3M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | Apr 21, 2026 | 21d | 2 | $151.0M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Jan 13, 2026 | 13d | 2 | $103.6M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 7, 2025 | 38d | 2 | $60.0M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 14, 2025 | 45d | 2 | $41.6M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 12, 2025 | 42d | 3 | $41.8M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 5, 2025 | 36d | 3 | $63.4M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. Book totals and portfolio weights cover reported non-option positions, which can include notes and warrants. Disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.