Harbourvest Partners LLC holds a concentrated book of 5 stocks worth $100.9M as of Q1 2026 (disclosed May 15, 2026, a ~45-day 13F lag). This quarter they opened Generate Biomedicines Inc. Their largest long position is Klarna Group PLC at 65% of the equity book.
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/1201001/holdings"
Use Arkolith to show HARBOURVEST PARTNERS LLC's latest holdings, largest changes, and filing provenance.
Top-heavy: 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.
Estimated $ traded · quarter-end prices, no cost basis
Other tracked managers holding the same core names as Harbourvest Partners LLC
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| MORGAN STANLEY | 8 / 5 | $180.9M |
| BANK OF AMERICA CORP /DE/ | 8 / 5 | $74.5M |
| BARCLAYS PLC | 8 / 5 | $31.6M |
| ROYAL BANK OF CANADA | 8 / 5 | $20.0M |
| BlackRock, Inc. | 7 / 5 | $491.2M |
| FMR LLC | 7 / 5 | $480.3M |
| JPMORGAN CHASE & CO | 7 / 5 | $296.5M |
| UBS Group AG | 7 / 5 | $209.3M |
Ranked by how many of Harbourvest Partners LLC's top 5 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 | Klarna Group PLC SHS | $65.8M | 5.02M | 65.2% | —Held | |
| 2 | Generate Biomedicines COM SHS | $21.5M | 1.72M | 21.3% | ▲New New position | |
| 3 | Full Truck Alliance Co. Ltd. Sponsored ADS | $7.9M | 957.6K | 7.9% | —Held | |
| 4 | CAMP4 Therapeutics Corp Common | $5.6M | 1.27M | 5.6% | —Held | |
| 5 | Century Therapeutics, Inc. Common | $66K | 29.0K | 0.1% | —Held |
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. Price-derived performance is withheld until the price-source policy and freshness gate are green.