Managers / Q3 2025 · view latest →
HARBOURVEST PARTNERS LLC
CIK 0001201001 · ONE LINCOLN STREET, SUITE 1700, BOSTON, MA, 02111 · 617-348-3707
Summary
Harbourvest Partners LLC reported $205M in U.S.-listed holdings across 9 positions for Q3 2025.
The portfolio is heavily concentrated: KLAR alone accounts for 89.8% of reported value.
Compared with Q2 2025, the fund opened 3 new positions and exited 9.
Portfolio Metrics
Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded, with multiple share classes and repeated sub-manager rows for the same issuer combined into one position — the same rule the holdings table uses by default. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.
Reported Value by Quarter
Portfolio Composition
- Common Stock · 93.9% · $193M
- ADR · 6.1% · $12M
Quarter-over-Quarter Changes full breakdown →
vs Q2 2025 (amended baseline)
| Issuer | Move | Share Δ | Shares now | Value Δ | Value now |
|---|---|---|---|---|---|
| KLARKlarna Group PLC | NEW | +5.02M | 5.02M | +$184M | $184M |
| PGYPagaya Technologies Ltd | NEW | +112.6K | 112.6K | +$3M | $3M |
| RKLBRocket Lab USA, Inc. | NEW | +14.8K | 14.8K | +$707,631 | $707,631 |
| WWayfair, Inc. | SOLD OUT | −1.06M | 0 | −$54M | $0 |
| IOTSamsara Network, Inc. | SOLD OUT | −218.0K | 0 | −$9M | $0 |
| RBRKRubrik, Inc. | SOLD OUT | −87.7K | 0 | −$8M | $0 |
| LendingClub Corp. | SOLD OUT | −238.1K | 0 | −$3M | $0 |
| RLAYRelay Therapeutics, Inc. | SOLD OUT | −296.4K | 0 | −$1M | $0 |
Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.
Holdings — Q3 2025
| # | Issuer | Class | % Portfolio | Value ↓ | Shares |
|---|---|---|---|---|---|
| 1 | KLARKlarna Group PLChistory → | SHS | 89.77% | $184M | 5.02M |
| 2 | YMMFull Truck Alliance Co. Ltd.history → | Sponsored ADS | 6.06% | $12M | 957.6K |
| 3 | CAMPCAMP4 Therapeutics Corphistory → | Common | 1.86% | $4M | 1.27M |
| 4 | PGYPagaya Technologies Ltdhistory → | CL A | 1.63% | $3M | 112.6K |
| 5 | RKLBRocket Lab USA, Inc. | Common | 0.35% | $707,631 | 14.8K |
| 6 | UUnity Software | Common | 0.18% | $370,050 | 9.2K |
| 7 | SONDQSonder Holdings, Inc. | CL A NEW | 0.14% | $285,892 | 225.1K |
| 8 | RPTXRepare Therapeutics, Inc. | Common | 0.01% | $21,606 | 12.3K |
| 9 | IPSCCentury Therapeutics, Inc. | Common | 0.01% | $14,451 | 29.0K |
Filing History
| Quarter | Reported Value | Positions | Filed | Type | Links |
|---|---|---|---|---|---|
| Q1 2026 | $101M | 5 | May 15, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q4 2025 | $174M | 7 | Feb 17, 2026 | 13F-HR | changes · EDGAR ↗ |
| Q3 2025 | $205M | 9 | Nov 14, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q2 2025 | $91M | 15 | Aug 14, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q1 2025 | $154M | 16 | May 15, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q4 2024 | $203M | 22 | Feb 14, 2025 | 13F-HR | changes · EDGAR ↗ |
| Q3 2024 | $192M | 34 | Nov 14, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q2 2024 | $188M | 40 | Aug 14, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q1 2024 | $219M | 48 | May 15, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q4 2023 | $299M | 53 | Feb 14, 2024 | 13F-HR | changes · EDGAR ↗ |
| Q3 2023 | $295M | 58 | Nov 14, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q2 2023 | $352M | 60 | Aug 14, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q1 2023 | $297M | 63 | May 15, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q4 2022 | $299M | 65 | Feb 14, 2023 | 13F-HR | changes · EDGAR ↗ |
| Q3 2022 | $306M | 67 | Nov 14, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q2 2022 | $305M | 62 | Aug 15, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q1 2022 | $490M | 66 | May 26, 2022 | RESTATEMENT | changes · EDGAR ↗ |
| Q4 2021 | $782M | 67 | Feb 14, 2022 | 13F-HR | changes · EDGAR ↗ |
| Q3 2021 | $1.1B | 56 | Nov 15, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q2 2021 | $1.0B | 51 | Aug 13, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q1 2021 | $746M | 44 | May 17, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q4 2020 | $256M | 26 | Feb 16, 2021 | 13F-HR | changes · EDGAR ↗ |
| Q3 2020 | $270M | 36 | Nov 12, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q2 2020 | $232M | 28 | Aug 13, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q1 2020 | $207M | 36 | May 14, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q4 2019 | $243M | 35 | Feb 13, 2020 | 13F-HR | changes · EDGAR ↗ |
| Q3 2019 | $240M | 33 | Nov 13, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q2 2019 | $262M | 32 | Aug 13, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q1 2019 | $283M | 33 | May 13, 2019 | 13F-HR | changes · EDGAR ↗ |
| Q4 2018 | $211M | 32 | Feb 14, 2019 | 13F-HR | changes · EDGAR ↗ |
13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.