Who owns Klaviyo, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of KVYO from SEC Form 13F filings across 277 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 277 institutions disclosed 145.3M shares of Klaviyo, Inc. worth $2.19B — about 49% of shares outstanding; the largest disclosed holder is SUMMIT PARTNERS L P. Source: SEC Form 13F filings, parsed by EvidInvest.
277
13F holders
$2.19B
value, 2026 filers
49%
of shares outstanding (145.3M sh)
71
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of KVYO's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | SUMMIT PARTNERS L P | 18.9M | $284.7M | 46.8% | 6.4% | 0.0% |
| 2 | Capital International Investors | 10.5M | $158.3M | 0.0% | 3.5% | -10.4% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 7.7M | $116.2M | 0.0% | 2.6% | +2.1% |
| 4 | BlackRock, Inc. | 7.6M | $114.9M | 0.0% | 2.6% | +74.8% |
| 5 | FMR LLC | 6.6M | $99.1M | 0.0% | 2.2% | -32.9% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 6.0M | $90.5M | 0.0% | 2% | -2.8% |
| 7 | Whale Rock Capital Management LLC | 5.5M | $83.5M | 0.7% | 1.9% | -19.0% |
| 8 | WELLINGTON MANAGEMENT GROUP LLP | 5.0M | $76.2M | 0.0% | 1.7% | -7.8% |
| 9 | MORGAN STANLEY | 4.4M | $67.1M | 0.0% | 1.5% | -12.3% |
| 10 | MILLENNIUM MANAGEMENT LLC | 4.1M | $62.2M | 0.0% | 1.4% | +75.3% |
| 11 | Sands Capital Alternatives, LLC | 3.9M | $59.3M | 9.7% | 1.3% | +7.6% |
| 12 | BANK OF AMERICA CORP /DE/ | 3.8M | $57.7M | 0.0% | 1.3% | +126.4% |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 2.5M | $37.4M | 0.0% | 0.8% | +39.6% |
| 14 | STATE STREET CORP | 2.3M | $35.0M | 0.0% | 0.8% | +100.7% |
| 15 | GREENOAKS LLC | 2.3M | $35.0M | 1.5% | 0.8% | 0.0% |
| 16 | Capital World Investors | 2.1M | $31.7M | 0.0% | 0.7% | +2.8% |
| 17 | GOLDMAN SACHS GROUP INC | 1.8M | $26.9M | 0.0% | 0.6% | -17.4% |
| 18 | TWO SIGMA INVESTMENTS, LP | 1.8M | $26.7M | 0.0% | 0.6% | -38.9% |
| 19 | CANADA PENSION PLAN INVESTMENT BOARD | 1.7M | $25.8M | 0.0% | 0.6% | +125.7% |
| 20 | Jupiter Topco LLCNEW | 1.6M | $24.4M | 0.0% | 0.5% | new |
| 21 | RENAISSANCE TECHNOLOGIES LLC | 1.6M | $23.6M | 0.0% | 0.5% | -4.9% |
| 22 | FIRST TRUST ADVISORS LP | 1.4M | $21.0M | 0.0% | 0.5% | +17.8% |
| 23 | Clearbridge Investments, LLC | 1.4M | $20.9M | 0.0% | 0.5% | -6.1% |
| 24 | Islander Capital Partners, L.P. | 1.4M | $20.9M | 7.6% | 0.5% | +12.8% |
| 25 | Fiera Capital Corp | 1.4M | $20.8M | 0.1% | 0.5% | -42.6% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.