Investor
SUMMIT PARTNERS L P
CIK 0000830588 · filed 2026-05-08 · SEC filing
13F book
$670.2M
Positions
7
0 new · 1 sold
Largest name
54.7%
Klaviyo, Inc. · KVYO
Est. mark
−$275.7M
Price effect on 7 names still held. Flow −$105.1M.
| Name | Ticker | Shares | Value | Weight | Est. mark | Change |
|---|---|---|---|---|---|---|
| Klaviyo, Inc. | KVYO | 18.9M | $366.9M | 54.7% | −$245.3M | Held |
| LifeStance Health Group, Inc. | LFST | 29.2M | $186.1M | 27.8% | −$19.6M | Cut−$49.9M |
| A K A Brands Hldg Corp | — | 6.05M | $62.4M | 9.3% | −$2.35M | Held |
| Aveanna Healthcare Hldgs Inc | — | 5.45M | $35.1M | 5.2% | −$9.46M | Cut−$26.6M |
| Macom Tech Solutions Hldgs I | — | 49.3K | $10.9M | 1.6% | $2.42M | Added$2.78M |
| A10 Networks, Inc. | ATEN | 200.1K | $4.63M | 0.7% | $1.02M | Added$1.31M |
| Solo Brands, Inc. | SBDS | 1.1M | $4.14M | 0.6% | −$2.52M | Held |
Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.