| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Bialecki Andrew | 35% | -6.8% | $2,233,913,659 | -$139,680,634 | 78,163,529 | -5.9% | Bialecki Andrew | 31 Dec 2025 |
| Hallen Ed | 19% | $910,422,224 | 32,879,098 | Hallen Ed | 30 Sep 2025 | |||
| SHOPIFY INC. | 19% | -26% | $886,841,973 | +$28,607,813 | 32,027,518 | +3.3% | Shopify Strategic Holdings 3 LLC | 29 Aug 2025 |
| SUMMIT PARTNERS L P | 12% | -42% | $522,033,423 | -$331,587,750 | 18,852,778 | -39% | Summit Partners, L.P. | 30 Sep 2025 |
| MORGAN STANLEY | 10% | +26% | $472,100,587 | +$136,911,718 | 14,538,026 | +41% | Morgan Stanley | 31 Dec 2025 |
| Capital International Investors | 9.3% | $365,505,219 | 12,788,846 | Capital International Investors | 31 Dec 2025 | |||
| Accomplice Fund I, L.P. | 10% | $322,309,237 | 11,137,154 | Jeff Fagnan | 31 Mar 2025 | |||
| VANGUARD GROUP INC | 10% | $365,938,152 | 10,728,178 | The Vanguard Group | 30 Jun 2025 | |||
| FMR LLC | 6.7% | $228,166,449 | 8,240,031 | FMR LLC | 30 Sep 2025 | |||
| Accel Growth Fund V L.P. | 4.9% | -12% | $134,813,025 | +$1,126,576 | 4,658,363 | +0.84% | Ping Li ("PL") | 31 Mar 2025 |
| Sands Capital Ventures, LLC | 4.9% | $127,806,680 | 4,416,264 | SANDS FRANK M. | 31 Mar 2025 | |||
| ALLIANCEBERNSTEIN L.P. | 4.4% | -14% | $116,317,963 | +$667,472 | 4,019,280 | +0.58% | AllianceBernstein L.P. | 31 Mar 2025 |
| Capital Research Global Investors | 3.8% | $86,863,410 | 3,001,500 | Capital Research Global Investors | 31 Dec 2024 | |||
| Clearbridge Investments, LLC | 3% | $62,185,375 | 2,148,769 | Clearbridge Investments, LLC | 30 Sep 2024 |
As of 31 Dec 2025, 254 institutional investors reported holding 158,291,979 shares of Klaviyo, Inc. - Common Stock (KVYO). This represents 115% of the company’s total 137,514,473 outstanding shares.
The largest institutional shareholders of Klaviyo, Inc. - Common Stock (KVYO) together control 87% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| SUMMIT PARTNERS L P | 14% | 18,852,778 | 0% | 58% | $612,149,702 |
| MORGAN STANLEY | 11% | 14,547,090 | +36% | 0.03% | $472,344,030 |
| VANGUARD GROUP INC | 10% | 14,361,540 | +12% | 0.01% | $466,319,204 |
| Capital International Investors | 9.3% | 12,788,846 | 0.07% | $415,253,830 | |
| FMR LLC | 6.1% | 8,371,717 | +1.6% | 0.01% | $271,829,648 |
| ALLIANCEBERNSTEIN L.P. | 3.4% | 4,731,312 | -1.6% | 0.05% | $153,625,701 |
| BlackRock, Inc. | 2.7% | 3,716,334 | +1.6% | 0% | $120,669,364 |
| Sands Capital Alternatives, LLC | 2.7% | 3,649,678 | +3.8% | 23% | $118,505,045 |
| JPMORGAN CHASE & CO | 2.6% | 3,564,743 | +87% | 0.01% | $115,747,232 |
| Whale Rock Capital Management LLC | 2.2% | 3,057,889 | +0.03% | 1.3% | $99,289,656 |
| FEDERATED HERMES, INC. | 2.1% | 2,900,807 | -0.32% | 0.16% | $94,189,203 |
| AMERICAN CENTURY COMPANIES INC | 2.1% | 2,895,304 | +37% | 0.05% | $94,010,573 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 2.1% | 2,854,163 | 0.31% | $92,674,663 | |
| Capital Research Global Investors | 1.9% | 2,577,782 | -0.59% | 0.02% | $83,700,582 |
| Fiera Capital Corp | 1.7% | 2,331,650 | +88% | 0.24% | $75,708,675 |
| GREENOAKS CAPITAL PARTNERS LLC | 1.7% | 2,316,796 | 0% | 2.5% | $75,226,366 |
| TWO SIGMA INVESTMENTS, LP | 1.6% | 2,224,011 | +31% | 0.11% | $72,213,637 |
| FRANKLIN RESOURCES INC | 1.4% | 1,980,269 | +3% | 0.02% | $64,299,347 |
| 12 West Capital Management LP | 1.3% | 1,838,000 | 0% | 7.1% | $59,679,860 |
| TWO SIGMA ADVISERS, LP | 1.3% | 1,782,500 | +15% | 0.11% | $57,877,775 |
| RENAISSANCE TECHNOLOGIES LLC | 1.3% | 1,763,744 | +4.8% | 0.09% | $57,268,768 |
| MILLENNIUM MANAGEMENT LLC | 1.2% | 1,700,502 | -4.5% | 0.04% | $55,215,300 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.2% | 1,672,727 | +13% | 0% | $54,330,537 |
| Clearbridge Investments, LLC | 1.2% | 1,641,958 | -17% | 0.04% | $53,314,379 |
| GOLDMAN SACHS GROUP INC | 1.1% | 1,524,043 | -4.3% | 0.01% | $49,485,676 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 158,291,979 | $5,139,735,721 | +$588,335,692 | $32.47 | 254 |
| 2025 Q3 | 141,310,129 | $3,914,452,615 | +$188,134,962 | $27.69 | 275 |
| 2025 Q2 | 133,427,489 | $4,480,157,634 | +$606,486,905 | $33.58 | 254 |
| 2025 Q1 | 115,163,123 | $3,485,157,277 | +$7,777,195 | $30.26 | 215 |
| 2024 Q4 | 114,019,355 | $4,702,454,232 | +$12,413,940 | $41.24 | 183 |
| 2024 Q3 | 112,688,295 | $3,988,569,710 | +$103,363,332 | $35.38 | 155 |
| 2024 Q2 | 110,710,486 | $2,755,035,251 | +$336,409,759 | $24.89 | 131 |
| 2024 Q1 | 97,210,463 | $2,473,738,867 | +$567,238,465 | $25.48 | 129 |
| 2023 Q4 | 74,639,384 | $2,071,573,932 | -$48,805,363 | $27.78 | 102 |
| 2023 Q3 | 76,070,874 | $2,621,101,608 | +$2,620,714,239 | $34.50 | 97 |