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SUMMIT PARTNERS L P
Period ended Sep 30, 2026 · Latest filing Oct 29, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Sep 30, 2026: $490,887,087
More quarters will appear as history becomes available.
Top holdings
Top 10 at Sep 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- KLAVIYO INC · COM SER A · 49845K101 · shares: $217,904,198
- LIFESTANCE HEALTH GROUP INC · COM · 53228F101 · shares: $199,984,603
- A K A BRANDS HLDG CORP · COM SHS · 00152K200 · shares: $65,864,180
- A10 NETWORKS INC · COM · 002121101 · shares: $5,423,762
- MACOM TECH SOLUTIONS HLDGS I · COM · 55405Y100 · shares: $1,710,344
Reported holdings
5 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| KLAVIYO INC | COM SER A | 49845K101 | — | 13,852,778 shares | $217,904,198 |
| LIFESTANCE HEALTH GROUP INC | COM | 53228F101 | — | 16,623,824 shares | $199,984,603 |
| A K A BRANDS HLDG CORP | COM SHS | 00152K200 | — | 6,053,693 shares | $65,864,180 |
| A10 NETWORKS INC | COM | 002121101 | — | 200,065 shares | $5,423,762 |
| MACOM TECH SOLUTIONS HLDGS I | COM | 55405Y100 | — | 6,005 shares | $1,710,344 |