KLAVIYO INC KVYO
COM SER A · Common Stock · CUSIP 49845K101
B2C CRM and marketing automation platform
- SectorTechnology
- IndustryServices-Prepackaged Software
- HeadquartersBoston, MA
- Founded2012
- Websiteklaviyo.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($1.5m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $15.10. Options: 14 managers hold calls ($41.5m notional), 14 hold puts ($33.6m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2023 | 98 |
| Q4 2023 | 103 |
| Q1 2024 | 133 |
| Q2 2024 | 133 |
| Q3 2024 | 157 |
| Q4 2024 | 185 |
| Q1 2025 | 220 |
| Q2 2025 | 256 |
| Q3 2025 | 277 |
| Q4 2025 | 262 |
| Q1 2026 | 267 |
| Q2 2026 | 276 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 87 | 69 |
| Q4 2024 | 110 | 73 |
| Q1 2025 | 150 | 81 |
| Q2 2025 | 177 | 89 |
| Q3 2025 | 166 | 118 |
| Q4 2025 | 144 | 150 |
| Q1 2026 | 169 | 106 |
| Q2 2026 | 164 | 133 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $62.2m | $36.0m | 0.58 |
| Q4 2025 | $52.8m | $30.5m | 0.58 |
| Q1 2026 | $27.8m | $15.6m | 0.56 |
| Q2 2026 | $41.5m | $33.6m | 0.81 |
Biggest buyers
| BlackRock, Inc. | Added | +3.3m |
| BANK OF AMERICA CORP /DE/ | Added | +2.1m |
| MILLENNIUM MANAGEMENT LLC | Added | +1.8m |
| STATE STREET CORP | Added | +1.2m |
| D. E. Shaw & Co., Inc. | Added | +1.1m |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Added | +1.1m |
| CANADA PENSION PLAN INVESTMENT BOARD | Added | +951.8k |
| ExodusPoint Capital Management, LP | New | +934.1k |
| Squarepoint Ops LLC | Added | +885.4k |
| Amundi | New | +814.1k |
Biggest sellers
| JPMORGAN CHASE & CO | Reduced | -3.5m |
| FMR LLC | Reduced | -3.2m |
| ALLIANCEBERNSTEIN L.P. | Reduced | -3.0m |
| FULLER & THALER ASSET MANAGEMENT, INC. | Sold out | -2.9m |
| AMERICAN CENTURY COMPANIES INC | Sold out | -2.9m |
| FEDERATED HERMES, INC. | Sold out | -2.6m |
| Capital Research Global Investors | Sold out | -1.3m |
| Whale Rock Capital Management LLC | Reduced | -1.3m |
| Schonfeld Strategic Advisors LLC | Sold out | -1.2m |
| Capital International Investors | Reduced | -1.2m |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $8.9m591.6k shares |
| JANE STREET GROUP, LLC | Added | $6.9m456.4k shares |
| Balyasny Asset Management L.P. | New | $6.0m400.0k shares |
| CITADEL ADVISORS LLC | Added | $4.8m315.0k shares |
| IMC-Chicago, LLC | Added | $4.3m283.3k shares |
| Walleye Trading LLC | Added | $3.1m205.0k shares |
| GROUP ONE TRADING LLC | Reduced | $2.6m172.6k shares |
| SIMPLEX TRADING, LLC | Added | $1.9m128.4k shares |
| CAPITAL FUND MANAGEMENT S.A. | New | $1.4m91.2k shares |
| TUDOR INVESTMENT CORP ET AL | Added | $632.7k41.9k shares |
Biggest puts
| GOLDMAN SACHS GROUP INC | New | $14.9m989.2k shares |
| GROUP ONE TRADING LLC | Added | $3.7m248.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $3.7m243.8k shares |
| CITADEL ADVISORS LLC | Added | $3.1m208.3k shares |
| JANE STREET GROUP, LLC | Added | $2.7m175.6k shares |
| IMC-Chicago, LLC | Added | $2.1m137.9k shares |
| SIMPLEX TRADING, LLC | Added | $1.1m72.9k shares |
| TUDOR INVESTMENT CORP ET AL | Added | $542.1k35.9k shares |
| Walleye Trading LLC | Added | $421.3k27.9k shares |
| Walleye Capital LLC | Added | $329.2k21.8k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| Bialecki Andrew 13G · exempt (held before listing) +1.4 pts · filed 2026-08-05 | 36.5% |
| SHOPIFY INC. 13D · may seek influence +2.0 pts · filed 2026-08-31 | 20.8% |
| Hallen Ed 13G · exempt (held before listing) filed 2025-11-05 | 19.4% |
| SUMMIT PARTNERS L P 13G · exempt (held before listing) -8.8 pts · filed 2025-11-13 | 12.0% |
| Accomplice Fund I, L.P. 13G · exempt (held before listing) filed 2025-05-07 | 10.5% |
| Capital International Investors 13G · institution -1.3 pts · filed 2026-05-14 | 8.0% |
| BlackRock, Inc. 13G · institution new · filed 2026-07-29 | 5.3% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.2% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-07-31 | 5.0% |
Fell to 5% or below in the last year: FMR LLC (4.7%, 2026-08-06), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC), MORGAN STANLEY (4.1%, 2026-03-06)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 3 | $4.9m | $4.9m |
| Q1 2025 | 0 | — | 4 | $5.6m | $5.6m |
| Q2 2025 | 0 | — | 5 | $364.0m | $3.1m |
| Q3 2025 | 0 | — | 7 | $45.6m | $45.6m |
| Q4 2025 | 0 | — | 6 | $50.0m | $50.0m |
| Q1 2026 | 1 | $300.3k | 3 | $40.7m | $40.7m |
| Q2 2026 | 0 | — | 4 | $17.1m | $17.1m |
| Q3 2026 | 0 | — | 4 | $3.8m | $3.8m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-09-24 | Hallen Ed Director · By Hodgkins LLC | Sold plan | $13.6k800 shares |
| 2026-09-24 | Hallen Ed Director · By Hodgkins Trust | Sold plan | $8.5k500 shares |
| 2026-09-11 | St. Ledger Susan Director | Sold plan | $37.1k2.3k shares |
| 2026-08-31 | Hallen Ed Director · By Hodgkins LLC | Sold plan | $1.2m59.6k shares |
| 2026-08-31 | Hallen Ed Director · By Hodgkins Trust | Sold plan | $801.7k39.2k shares |
| 2026-08-31 | Edmond Landon Chief Legal Officer | Sold plan | $165.6k8.1k shares |
| 2026-08-28 | Edmond Landon Chief Legal Officer | Sold plan | $1.1m53.5k shares |
| 2026-08-14 | Whalen Amanda Chief Financial Officer | Sold plan | $258.6k14.0k shares |
| 2026-08-11 | SUMMIT PARTNERS L P +5 10% owner · See footnotes | Sold | $88.5m5.0m shares |
| 2026-07-16 | Whalen Amanda Chief Financial Officer | Sold plan | $248.5k14.0k shares |
| 2026-06-18 | Whalen Amanda Chief Financial Officer | Sold plan | $185.2k14.0k shares |
| 2026-05-26 | Bialecki Andrew Co-Chief Executive Officer, director | Sold plan | $3.1m212.5k shares |
| 2026-05-19 | Bialecki Andrew Co-Chief Executive Officer, director | Sold plan | $3.0m200.0k shares |
| 2026-05-18 | St. Ledger Susan Director | Sold plan | $133.2k9.3k shares |
| 2026-05-14 | Whalen Amanda Chief Financial Officer | Sold plan | $199.6k14.0k shares |
| 2026-05-12 | Bialecki Andrew Co-Chief Executive Officer, director | Sold plan | $2.9m200.0k shares |
| 2026-04-20 | Edmond Landon Chief Legal Officer | Sold plan | $192.5k9.6k shares |
| 2026-04-16 | Whalen Amanda Chief Financial Officer | Sold plan | $259.6k14.0k shares |
| 2026-04-14 | Bialecki Andrew Co-Chief Executive Officer, director | Sold plan | $3.4m200.0k shares |
| 2026-04-07 | Bialecki Andrew Co-Chief Executive Officer, director | Sold plan | $3.7m200.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| SUMMIT PARTNERS L P 46.75% of their portfolio | 18.9m $284.7m | Unchanged |
| Capital International Investors 0.03% of their portfolio | 10.5m $158.3m | Reduced -1.2m |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.01% of their portfolio | 7.7m $116.2m | Added +160.9k |
| BlackRock, Inc. 0.00% of their portfolio | 7.6m $114.9m | Added +3.3m |
| FMR LLC 0.00% of their portfolio | 6.6m $99.1m | Reduced -3.2m |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 6.0m $90.5m | Reduced -172.1k |
| Whale Rock Capital Management LLC 0.67% of their portfolio | 5.5m $83.5m | Reduced -1.3m |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 5.0m $76.2m | Reduced -430.0k |
| MORGAN STANLEY 0.00% of their portfolio | 4.4m $67.1m | Reduced -623.0k |
| MILLENNIUM MANAGEMENT LLC 0.04% of their portfolio | 4.1m $62.2m | Added +1.8m |
| Sands Capital Alternatives, LLC 9.67% of their portfolio | 3.9m $59.3m | Added +278.5k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 3.8m $57.7m | Added +2.1m |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 2.5m $37.4m | Added +703.1k |
| STATE STREET CORP 0.00% of their portfolio | 2.3m $35.0m | Added +1.2m |
| GREENOAKS LLC 1.48% of their portfolio | 2.3m $35.0m | Unchanged |
| Capital World Investors 0.00% of their portfolio | 2.1m $31.7m | Added +57.2k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 1.8m $26.9m | Reduced -376.7k |
| TWO SIGMA INVESTMENTS, LP 0.02% of their portfolio | 1.8m $26.7m | Reduced -1.1m |
| CANADA PENSION PLAN INVESTMENT BOARD 0.01% of their portfolio | 1.7m $25.8m | Added +951.8k |
| Jupiter Topco LLC 0.01% of their portfolio | 1.6m $24.4m | First filing |
| RENAISSANCE TECHNOLOGIES LLC 0.03% of their portfolio | 1.6m $23.6m | Reduced -80.6k |
| FIRST TRUST ADVISORS LP 0.01% of their portfolio | 1.4m $21.0m | Added +210.8k |
| Clearbridge Investments, LLC 0.02% of their portfolio | 1.4m $20.9m | Reduced -89.2k |
| Islander Capital Partners, L.P. 7.58% of their portfolio | 1.4m $20.9m | Added +157.3k |
| Fiera Capital Corp 0.08% of their portfolio | 1.4m $20.8m | Reduced -1.0m |
| Barton Investment Management 2.57% of their portfolio | 1.3m $19.0m | Added +206.6k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio | 1.3m $18.9m | Added +1.1m |
| MARSHALL WACE, LLP 0.02% of their portfolio | 1.2m $18.4m | Added +83.0k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 1.2m $18.0m | Added +1.1m |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 1.2m $17.7m | Added +9.7k |
| Trexquant Investment LP 0.11% of their portfolio | 1.1m $17.3m | Added +443.5k |
| Point72 Asset Management, L.P. 0.03% of their portfolio | 1.1m $16.8m | Reduced -557.9k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 1.1m $16.4m | Added +11.0k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 1.0m $15.1m | Added +679.5k |
| Squarepoint Ops LLC 0.03% of their portfolio | 962.1k $14.5m | Added +885.4k |
| Bienville Capital Management, LLC 2.04% of their portfolio | 938.4k $14.2m | Reduced -289.5k |
| ExodusPoint Capital Management, LP 0.13% of their portfolio | 934.1k $14.1m | New |
| Qube Research & Technologies Ltd 0.02% of their portfolio | 901.4k $13.6m | Added +299.7k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 893.3k $13.5m | Added +15.1k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 817.7k $12.3m | Reduced -3.5m |
| Amundi 0.00% of their portfolio | 814.1k $12.3m | New |
| UBS Group AG 0.00% of their portfolio | 808.2k $12.2m | Added +611.8k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 796.9k $12.0m | Reduced -87.9k |
| Balyasny Asset Management L.P. 0.02% of their portfolio | 718.9k $10.9m | New |
| Delta Global Management LP 1.13% of their portfolio | 690.7k $10.4m | Reduced -156.8k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 678.1k $10.2m | Added +308.1k |
| CONGRESS ASSET MANAGEMENT CO 0.06% of their portfolio | 636.2k $9.6m | New |
| Bank of New York Mellon Corp 0.00% of their portfolio | 573.7k $8.7m | Reduced -934.4k |
| Quantinno Capital Management LP 0.01% of their portfolio | 548.7k $8.3m | Added +629 |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 528.4k $8.0m | Added +70.2k |
| Voleon Capital Management LP 0.13% of their portfolio | 477.4k $7.2m | Added +439.9k |
| XTX Topco Ltd 0.09% of their portfolio | 469.3k $7.1m | Added +346.4k |
| Integrated Wealth Concepts LLC 0.03% of their portfolio | 435.6k $6.6m | Added +5.8k |
| Morangie Management LLC 5.06% of their portfolio | 403.2k $6.1m | Reduced -20.9k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 397.8k $6.0m | Added +303.9k |
| TWIN FOCUS CAPITAL PARTNERS, LLC 0.56% of their portfolio | 364.7k $5.5m | Unchanged |
| Nuveen, LLC 0.00% of their portfolio | 359.1k $5.4m | Added +335.8k |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.10% of their portfolio | 344.8k $5.2m | New |
| HUNTINGTON NATIONAL BANK 0.02% of their portfolio | 333.0k $5.0m | Added +166.5k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 317.8k $4.8m | Reduced -594.1k |
| Jump Financial, LLC 0.04% of their portfolio | 315.5k $4.8m | New |
| Pathstone Holdings, LLC 0.01% of their portfolio | 313.8k $4.7m | Added +154.3k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 307.7k $4.6m | Added +61.8k |
| ArrowMark Colorado Holdings LLC 0.19% of their portfolio | 307.3k $4.6m | Reduced -1.2m |
| CAPITAL FUND MANAGEMENT S.A. 0.03% of their portfolio | 307.2k $4.6m | Added +122.3k |
| FORMULA GROWTH LTD 1.59% of their portfolio | 300.0k $4.5m | Added +150.0k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 294.7k $4.5m | Reduced -1.2m |
| BW Gestao de Investimentos Ltda. 0.11% of their portfolio | 293.6k $4.4m | Added +174.8k |
| Swiss National Bank 0.00% of their portfolio | 280.6k $4.2m | Added +21.4k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 271.5k $4.1m | Added +181.5k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 257.3k $3.9m | Added +19.8k |
| LGT Fund Management Co Ltd. 0.14% of their portfolio | 230.1k $3.5m | New |
| ALGERT GLOBAL LLC 0.04% of their portfolio | 227.3k $3.4m | Added +88.2k |
| Mayflower Financial Advisors, LLC 0.30% of their portfolio | 226.7k $3.4m | Reduced -29 |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 211.8k $3.2m | Added +12.3k |
| SANDS CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 198.8k $3.0m | Reduced -396.4k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 198.3k $3.0m | Added +63.4k |
| Holocene Advisors, LP 0.01% of their portfolio | 193.0k $2.9m | Added +107.0k |
| Aquatic Capital Management LLC 0.10% of their portfolio | 187.5k $2.8m | Added +66.6k |
| Invesco Ltd. 0.00% of their portfolio | 179.6k $2.7m | Added +137.1k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.00% of their portfolio | 176.6k $2.7m | New |
| Y-Intercept (Hong Kong) Ltd 0.05% of their portfolio | 167.3k $2.5m | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 163.0k $2.5m | Added +9.6k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 157.4k $2.4m | Added +2.0k |
| Brevan Howard Capital Management LP 0.03% of their portfolio | 149.6k $2.3m | Added +48.0k |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.00% of their portfolio | 131.9k $2.0m | Reduced -26.0k |
| Engineers Gate Manager LP 0.03% of their portfolio | 131.7k $2.0m | Added +111.7k |
| Focus Partners Wealth 0.00% of their portfolio | 131.0k $2.0m | Reduced -10.1k |
| Crestwood Advisors Group, LLC 0.03% of their portfolio | 128.4k $1.9m | Reduced -519 |
| IMC-Chicago, LLC 0.02% of their portfolio | 122.0k $1.8m | Added +61.2k |
| Shay Capital LLC 0.20% of their portfolio | 117.5k $1.8m | New |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 114.2k $1.7m | Added +112.1k |
| Night Squared LP 0.18% of their portfolio | 112.6k $1.7m | Reduced -124.6k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 109.5k $1.7m | Reduced -2.9k |
| FIL Ltd 0.00% of their portfolio | 105.6k $1.6m | Reduced -1.8k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 101.2k $1.5m | Added +12.9k |
| Legal & General Group Plc 0.00% of their portfolio | 98.0k $1.5m | Added +1.6k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 96.9k $1.5m | Reduced -5.8k |
| Man Group plc 0.00% of their portfolio | 93.7k $1.4m | Added +17.0k |
| Kerrisdale Advisers, LLC 0.34% of their portfolio | 91.1k $1.4m | New |