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 ($441.1k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $33.58. Options: 16 managers hold calls ($91.8m notional), 14 hold puts ($42.3m).
Trends to Q2 2025
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 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2023 | 73 | 50 |
| Q1 2024 | 105 | 41 |
| Q2 2024 | 73 | 62 |
| Q3 2024 | 87 | 69 |
| Q4 2024 | 110 | 73 |
| Q1 2025 | 150 | 81 |
| Q2 2025 | 177 | 89 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $70.2m | $15.8m | 0.23 |
| Q4 2024 | $89.6m | $44.5m | 0.50 |
| Q1 2025 | $74.5m | $50.5m | 0.68 |
| Q2 2025 | $91.8m | $42.3m | 0.46 |
Biggest buyers
| MORGAN STANLEY | Added | +3.1m |
| VANGUARD GROUP INC | Added | +2.3m |
| COOPER CREEK PARTNERS MANAGEMENT LLC | New | +1.7m |
| ROYAL BANK OF CANADA | Added | +1.6m |
| FMR LLC | Added | +1.5m |
| AMERICAN CENTURY COMPANIES INC | Added | +1.5m |
| MILLENNIUM MANAGEMENT LLC | Added | +1.5m |
| JANUS HENDERSON GROUP PLC | Added | +1.4m |
| 12 West Capital Management LP | New | +1.3m |
| Fiera Capital Corp | New | +1.3m |
Biggest sellers
| SUMMIT PARTNERS L P | Reduced | -8.0m |
| 1832 Asset Management L.P. | Reduced | -2.1m |
| VOYA INVESTMENT MANAGEMENT LLC | Reduced | -1.7m |
| Claro Advisors Inc. | Sold out | -1.6m |
| Whale Rock Capital Management LLC | Reduced | -645.3k |
| BANK OF AMERICA CORP /DE/ | Reduced | -568.3k |
| Morangie Management LLC | Reduced | -506.4k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Reduced | -486.6k |
| AMERIPRISE FINANCIAL INC | Reduced | -400.2k |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | -399.4k |
Biggest calls
| Twin Tree Management, LP | Added | $24.9m742.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $13.2m393.0k shares |
| JANE STREET GROUP, LLC | Reduced | $13.0m385.7k shares |
| Walleye Trading LLC | Reduced | $11.3m335.9k shares |
| PEAK6 LLC | Added | $10.5m313.6k shares |
| CITADEL ADVISORS LLC | Reduced | $7.3m216.5k shares |
| SIMPLEX TRADING, LLC | Reduced | $3.0m88.6k shares |
| GROUP ONE TRADING LLC | Added | $2.5m74.7k shares |
| IMC-Chicago, LLC | Reduced | $2.4m71.0k shares |
| Walleye Capital LLC | Reduced | $1.3m39.3k shares |
Biggest puts
| Walleye Trading LLC | Added | $13.2m393.0k shares |
| Twin Tree Management, LP | Reduced | $7.9m236.1k shares |
| CITADEL ADVISORS LLC | Reduced | $7.7m228.2k shares |
| SIMPLEX TRADING, LLC | Reduced | $5.1m152.1k shares |
| GROUP ONE TRADING LLC | Added | $1.7m49.3k shares |
| JANE STREET GROUP, LLC | Reduced | $1.5m44.1k shares |
| Caption Management, LLC | New | $1.3m40.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.3m38.1k shares |
| IMC-Chicago, LLC | Reduced | $1.3m37.5k shares |
| TUDOR INVESTMENT CORP ET AL | Reduced | $587.6k17.5k 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 in Q2 2025
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 |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 1 | $339.8k | — |
| Q4 2023 | 0 | — | 0 | — | — |
| Q1 2024 | 0 | — | 1 | $865.7k | — |
| Q2 2024 | 0 | — | 3 | $1.4m | $1.4m |
| Q3 2024 | 0 | — | 4 | $12.9m | $12.9m |
| Q4 2024 | 0 | — | 3 | $4.9m | $4.9m |
| Q1 2025 | 0 | — | 4 | $5.6m | $5.6m |
| Q2 2025 | 0 | — | 5 | $364.0m | $3.1m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-06-16 | Rowland Stephen Eric President | Sold plan | $244.6k7.1k shares |
| 2025-06-13 | Whalen Amanda Chief Financial Officer | Sold plan | $502.1k15.0k shares |
| 2025-06-04 | SUMMIT PARTNERS L P +5 10% owner · See footnotes | Sold | $133.4m4.0m shares |
| 2025-05-19 | SUMMIT PARTNERS L P +5 10% owner · See footnotes | Sold | $132.0m4.0m shares |
| 2025-05-16 | Bialecki Andrew Chief Executive Officer, director | Sold | $360.9m11.0m shares |
| 2025-05-16 | Whalen Amanda Chief Financial Officer | Sold plan | $524.7k15.0k shares |
| 2025-05-16 | Galvin Carmel Chief People Officer | Sold plan | $390.6k11.2k shares |
| 2025-05-16 | Edmond Landon Chief Legal Officer | Sold plan | $347.3k10.0k shares |
| 2025-05-16 | Rowland Stephen Eric President | Sold plan | $246.8k7.1k shares |
| 2025-05-15 | Rowland Stephen Eric President | Sold plan | $247.1k7.1k shares |
| 2025-04-15 | Rowland Stephen Eric President | Sold plan | $188.2k7.1k shares |
| 2025-04-11 | Whalen Amanda Chief Financial Officer | Sold plan | $400.5k15.0k shares |
| 2025-04-09 | Fagnan Jeff 10% owner · By Leno2, LLC | Bought | $100.5k3.9k 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 2025
| Manager | Shares | Change |
|---|---|---|
| SUMMIT PARTNERS L P 73.01% of their portfolio | 30.8m $1.0bn | Reduced -8.0m |
| VANGUARD GROUP INC 0.01% of their portfolio | 10.7m $360.3m | Added +2.3m |
| MORGAN STANLEY 0.01% of their portfolio | 4.4m $149.2m | Added +3.1m |
| ALLIANCEBERNSTEIN L.P. 0.05% of their portfolio | 4.4m $148.6m | Added +405.0k |
| Whale Rock Capital Management LLC 1.72% of their portfolio | 3.7m $123.7m | Reduced -645.3k |
| Sands Capital Alternatives, LLC 23.24% of their portfolio | 3.5m $118.0m | Added +71.5k |
| BlackRock, Inc. 0.00% of their portfolio | 3.4m $114.7m | Added +1.1m |
| FEDERATED HERMES, INC. 0.18% of their portfolio | 2.9m $97.8m | Added +241.2k |
| Capital Research Global Investors 0.02% of their portfolio | 2.7m $91.3m | Unchanged |
| AMERICAN CENTURY COMPANIES INC 0.05% of their portfolio | 2.7m $90.2m | Added +1.5m |
| GREENOAKS LLC 2.96% of their portfolio | 2.3m $78.8m | Added +28.8k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 2.1m $69.1m | Reduced -220.8k |
| Clearbridge Investments, LLC 0.06% of their portfolio | 2.0m $68.1m | Added +111.0k |
| FRANKLIN RESOURCES INC 0.02% of their portfolio | 1.9m $65.5m | Reduced -365.3k |
| MILLENNIUM MANAGEMENT LLC 0.06% of their portfolio | 1.8m $61.9m | Added +1.5m |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 1.7m $58.7m | Added +601.9k |
| COOPER CREEK PARTNERS MANAGEMENT LLC 1.90% of their portfolio | 1.7m $57.1m | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.7m $56.8m | Added +867.7k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 1.6m $53.3m | Added +1.6m |
| NORGES BANK 0.01% of their portfolio | 1.6m $52.6m | Reduced -92.9k |
| FMR LLC 0.00% of their portfolio | 1.5m $51.5m | Added +1.5m |
| JANUS HENDERSON GROUP PLC 0.02% of their portfolio | 1.5m $49.2m | Added +1.4m |
| VOYA INVESTMENT MANAGEMENT LLC 0.05% of their portfolio | 1.4m $47.8m | Reduced -1.7m |
| TWO SIGMA ADVISERS, LP 0.10% of their portfolio | 1.4m $47.7m | Added +535.4k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.03% of their portfolio | 1.4m $46.6m | Added +244.3k |
| 12 West Capital Management LP 4.66% of their portfolio | 1.3m $44.1m | New |
| Fiera Capital Corp 0.14% of their portfolio | 1.3m $42.6m | New |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.3m $42.2m | Added +299.5k |
| RENAISSANCE TECHNOLOGIES LLC 0.05% of their portfolio | 1.2m $40.1m | Added +219.4k |
| LORD, ABBETT & CO. LLC 0.13% of their portfolio | 1.2m $39.1m | Reduced -373.6k |
| TWO SIGMA INVESTMENTS, LP 0.07% of their portfolio | 1.1m $38.0m | Added +369.8k |
| SANDS CAPITAL MANAGEMENT, LLC 0.11% of their portfolio | 1.1m $37.2m | Added +136.3k |
| D. E. Shaw & Co., Inc. 0.04% of their portfolio | 1.1m $35.3m | Reduced -13.9k |
| FIRST TRUST ADVISORS LP 0.03% of their portfolio | 988.8k $33.2m | Added +72.8k |
| Focus Partners Wealth 0.07% of their portfolio | 928.5k $31.2m | Added +10.9k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 875.0k $29.4m | Reduced -568.3k |
| Freestone Grove Partners LP 0.21% of their portfolio | 836.4k $28.1m | Added +308.1k |
| BNP PARIBAS FINANCIAL MARKETS 0.02% of their portfolio | 831.8k $27.9m | Added +463.5k |
| Integrated Wealth Concepts LLC 0.28% of their portfolio | 830.5k $27.9m | Added +680.8k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.06% of their portfolio | 827.9k $27.8m | Added +505.3k |
| Zimmer Partners, LP 0.55% of their portfolio | 719.6k $24.2m | New |
| STATE STREET CORP 0.00% of their portfolio | 713.8k $24.0m | Added +159.8k |
| GLYNN CAPITAL MANAGEMENT LLC 5.32% of their portfolio | 705.3k $23.7m | Added +174.9k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 701.0k $23.5m | Added +155.8k |
| MARSHALL WACE, LLP 0.03% of their portfolio | 679.7k $22.8m | Added +304.5k |
| CITADEL ADVISORS LLC 0.02% of their portfolio | 635.9k $21.4m | Reduced -296.2k |
| WCM INVESTMENT MANAGEMENT, LLC 0.05% of their portfolio | 619.2k $20.5m | Added +229.0k |
| ArrowMark Colorado Holdings LLC 0.37% of their portfolio | 611.0k $20.5m | New |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 608.9k $20.4m | Added +158.8k |
| Cubist Systematic Strategies, LLC 0.22% of their portfolio | 605.9k $20.3m | Added +447.5k |
| Qube Research & Technologies Ltd 0.03% of their portfolio | 570.6k $19.2m | Added +183.0k |
| Delta Global Management LP 1.24% of their portfolio | 553.4k $18.6m | New |
| UBS Group AG 0.00% of their portfolio | 525.1k $17.6m | Added +324.5k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 508.6k $17.1m | Reduced -400.2k |
| Quantinno Capital Management LP 0.07% of their portfolio | 501.1k $16.8m | New |
| Ghisallo Capital Management LLC 0.45% of their portfolio | 500.0k $16.8m | New |
| Morangie Management LLC 14.07% of their portfolio | 482.9k $16.2m | Reduced -506.4k |
| Granahan Investment Management, LLC 0.66% of their portfolio | 479.7k $16.1m | New |
| TWIN FOCUS CAPITAL PARTNERS, LLC 2.01% of their portfolio | 427.1k $14.3m | New |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.05% of their portfolio | 416.6k $14.0m | Reduced -486.6k |
| TUDOR INVESTMENT CORP ET AL 0.10% of their portfolio | 403.2k $13.5m | Added +376.9k |
| VICTORY CAPITAL MANAGEMENT INC 0.01% of their portfolio | 369.9k $12.4m | Added +362.1k |
| Jump Financial, LLC 0.15% of their portfolio | 368.5k $12.4m | Added +261.1k |
| Trexquant Investment LP 0.14% of their portfolio | 362.8k $12.2m | Reduced -8.9k |
| Walleye Capital LLC 0.11% of their portfolio | 362.7k $12.2m | Added +321.0k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 322.4k $10.8m | Added +306.9k |
| NEEDHAM INVESTMENT MANAGEMENT LLC 0.82% of their portfolio | 305.0k $10.2m | Reduced -4.0k |
| Longaeva Partners L.P. 2.43% of their portfolio | 301.5k $10.1m | New |
| Fortress Investment Group LLC 1.43% of their portfolio | 300.0k $10.1m | New |
| Burkehill Global Management, LP 0.74% of their portfolio | 300.0k $10.1m | New |
| Ararat Capital Management LP 4.31% of their portfolio | 282.8k $9.5m | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 282.6k $9.5m | Added +134.4k |
| Quantbot Technologies LP 0.22% of their portfolio | 259.1k $8.7m | Added +136.7k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 248.5k $8.3m | Added +49.3k |
| Polar Capital Holdings Plc 0.04% of their portfolio | 246.8k $8.3m | Reduced -14.3k |
| BLAIR WILLIAM & CO/IL 0.02% of their portfolio | 245.3k $8.2m | Added +14.1k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 240.6k $8.1m | Added +41.1k |
| Mayflower Financial Advisors, LLC 1.09% of their portfolio | 233.2k $7.8m | Reduced -198.3k |
| Engineers Gate Manager LP 0.10% of their portfolio | 232.1k $7.8m | Added +48.7k |
| Swiss National Bank 0.00% of their portfolio | 181.6k $6.1m | Added +41.8k |
| Pathstone Holdings, LLC 0.02% of their portfolio | 173.1k $5.8m | Reduced -8.9k |
| Verition Fund Management LLC 0.03% of their portfolio | 167.8k $5.6m | Added +61.9k |
| CAPITAL FUND MANAGEMENT S.A. 0.06% of their portfolio | 166.5k $5.6m | Added +112.1k |
| GOODNOW INVESTMENT GROUP, LLC 0.50% of their portfolio | 161.4k $5.4m | New |
| Night Squared LP 2.15% of their portfolio | 143.8k $4.8m | Reduced -66.5k |
| Stanley-Laman Group, Ltd. 0.71% of their portfolio | 143.2k $4.8m | Reduced -16.9k |
| Cynosure Group, LLC 0.54% of their portfolio | 141.9k $4.8m | Unchanged |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 138.0k $4.6m | Added +130.3k |
| Lisanti Capital Growth, LLC 1.23% of their portfolio | 132.4k $4.4m | Added +22.1k |
| Liontrust Investment Partners LLP 0.06% of their portfolio | 129.9k $4.4m | Reduced -8.7k |
| Crestwood Advisors Group, LLC 0.08% of their portfolio | 128.9k $4.3m | Reduced -23 |
| Susquehanna Portfolio Strategies, LLC 0.09% of their portfolio | 127.4k $4.3m | New |
| Balyasny Asset Management L.P. 0.01% of their portfolio | 116.9k $3.9m | Reduced -7.2k |
| OSTERWEIS CAPITAL MANAGEMENT INC 0.18% of their portfolio | 114.7k $3.9m | Reduced -206.5k |
| 1832 Asset Management L.P. 0.01% of their portfolio | 112.7k $3.8m | Reduced -2.1m |
| Snowden Capital Advisors LLC 0.11% of their portfolio | 110.3k $3.7m | Added +11.3k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 105.8k $3.6m | New |
| IEQ CAPITAL, LLC 0.02% of their portfolio | 105.7k $3.5m | Added +52.6k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 105.5k $3.5m | Reduced -15.5k |
| ALGERT GLOBAL LLC 0.07% of their portfolio | 105.2k $3.5m | Added +52.1k |