Klaviyo, Inc. - Series A Common Stock (KVYO)

Historical Holders from Q3 2023 to Q4 2025

Type / Class
Equity / Series A Common Stock
Symbol
KVYO on NYSE
Shares outstanding
138,457,390
Price per share
$32.47
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
141,307,454
Total reported value
$3,914,386,078
% of total 13F portfolios
0.01%
Share change
+7,800,275
Value change
+$188,132,367
Number of holders
273
Price from insider filings
$32.47
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Klaviyo, Inc. - Series A Common Stock (KVYO) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Bialecki Andrew 38% -12% $2,299,679,006 -$131,401,538 83,050,885 -5.4% Bialecki Andrew 30 Sep 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
Accomplice Fund I, L.P. 10% $323,757,067 11,137,154 Jeff Fagnan 31 Mar 2025
VANGUARD GROUP INC 10% $402,306,675 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% $135,418,612 +$1,131,637 4,658,363 +0.84% Ping Li ("PL") 31 Mar 2025
Sands Capital Ventures, LLC 4.9% $128,380,794 4,416,264 SANDS FRANK M. 31 Mar 2025
ALLIANCEBERNSTEIN L.P. 4.4% -14% $116,840,470 +$670,470 4,019,280 +0.58% AllianceBernstein L.P. 31 Mar 2025
Capital Research Global Investors 3.8% $87,253,605 3,001,500 Capital Research Global Investors 31 Dec 2024
Clearbridge Investments, LLC 3% $62,464,715 2,148,769 Clearbridge Investments, LLC 30 Sep 2024
As of 30 Sep 2025, Klaviyo, Inc. - Series A Common Stock (KVYO) has 273 institutional shareholders filing 13F forms. They hold 141,307,454 shares. .

Top 25 institutional shareholders own 75% of the company.

Filer Ownership Nb Shares Share Change % Portfolio % Holdings Value
SUMMIT PARTNERS L P 14% 18,852,778 -39% 56% $522,033,423
VANGUARD GROUP INC 9.2% 12,787,728 +19% 0.01% $354,092,188
MORGAN STANLEY 7.7% 10,691,930 +141% 0.02% $296,059,567
FMR LLC 6% 8,240,031 +437% 0.01% $228,166,449
Point72 Asset Management, L.P. 3.8% 5,235,229 0.32% $144,963,488
ALLIANCEBERNSTEIN L.P. 3.5% 4,806,677 +8.6% 0.04% $133,096,886
BlackRock, Inc. 2.6% 3,656,889 +7% 0% $101,259,254
Sands Capital Alternatives, LLC 2.5% 3,515,065 0% 21% $97,332,150
Whale Rock Capital Management LLC 2.2% 3,056,967 -17% 1% $84,647,416
CITADEL ADVISORS LLC 2.2% 2,992,498 +371% 0.07% $82,862,269
FEDERATED HERMES, INC. 2.1% 2,910,192 -0.03% 0.14% $80,583,216
Capital Research Global Investors 1.9% 2,593,143 -4.6% 0.01% $71,804,130
Bank of New York Mellon Corp 1.8% 2,519,626 +22% 0.01% $69,768,445
GREENOAKS CAPITAL PARTNERS LLC 1.7% 2,316,796 -1.2% 2.1% $64,152,081
AMERICAN CENTURY COMPANIES INC 1.5% 2,118,977 -21% 0.03% $58,674,506
Clearbridge Investments, LLC 1.4% 1,981,598 -2.2% 0.04% $54,870,438
FRANKLIN RESOURCES INC 1.4% 1,922,325 -1.4% 0.01% $53,229,175
JPMORGAN CHASE & CO 1.4% 1,907,831 +13% 0% $52,827,857
12 West Capital Management LP 1.3% 1,838,000 +40% 5.3% $50,894,220
MILLENNIUM MANAGEMENT LLC 1.3% 1,781,054 -3.3% 0.04% $49,317,385
TWO SIGMA INVESTMENTS, LP 1.2% 1,692,181 +50% 0.07% $46,856,492
RENAISSANCE TECHNOLOGIES LLC 1.2% 1,683,344 +41% 0.06% $46,611,795
GOLDMAN SACHS GROUP INC 1.1% 1,592,076 -8.9% 0.01% $44,084,584
TWO SIGMA ADVISERS, LP 1.1% 1,556,300 +9.5% 0.09% $43,093,947
GEODE CAPITAL MANAGEMENT, LLC 1.1% 1,477,386 +18% 0% $40,921,718

Institutional Holders of Klaviyo, Inc. - Series A Common Stock (KVYO) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price Investors
2025 Q4 193,992 $6,298,842 +$1,262,170 $32.47 9
2025 Q3 141,307,454 $3,914,386,078 +$188,132,367 $27.69 273
2025 Q2 133,427,489 $4,480,157,634 +$606,486,878 $33.58 254
2025 Q1 115,161,404 $3,485,105,260 +$7,777,264 $30.26 214
2024 Q4 113,909,613 $4,697,886,089 +$33,043,199 $41.24 182
2024 Q3 112,077,301 $3,966,952,420 +$88,331,840 $35.38 157
2024 Q2 110,717,294 $2,755,204,553 +$355,626,427 $24.89 134
2024 Q1 96,445,245 $2,454,240,852 +$534,399,846 $25.48 132
2023 Q4 390,909 $10,859,620 +$1,177,067 $27.78 4
2023 Q3 75,413,145 $2,598,409,924 +$2,596,811,574 $34.50 96