Latest Period
Q1 2026
Security Snapshot
Klaviyo, Inc. - Common Stock (KVYO) Institutional Ownership
CUSIP: 49845K101
13F Institutional Holders and Ownership History from Q3 2023 to Q1 2026
Institutions Reporting
255
Shares (Excl. Options)
152,363,245
Price
$19.46
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- Type / Class
- Equity / Common Stock
- Symbol
- KVYO on NYSE
- Shares outstanding
- 146,298,238
- Price per share
- $18.67
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 152,363,245
- Total reported value
- $2,962,872,850
- % of total 13F portfolios
- 0%
- Share change
- -314,602
- Value change
- -$140,668,045
- Number of holders
- 255
- Price from insider filings
- $18.67
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- KVYO - Klaviyo, Inc. - Common Stock is tracked under CUSIP 49845K101.
- 255 institutions reported positions in Q1 2026.
- 14 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 259 to 255 between Q4 2025 and Q1 2026.
- Reported value moved from $5,141,090,923 to $2,962,872,850.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 255 institutions filings for Q1 2026.
Investment Quick Answers
What is CUSIP 49845K101?
CUSIP 49845K101 identifies KVYO - Klaviyo, Inc. - Common Stock in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q1 2026 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 49845K101:
Significant Owners of Klaviyo, Inc. - 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 | 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 |
| Capital International Investors | 8% | -14% | $208,211,652 | -$19,301,919 | 11,703,859 | -8.5% | Capital International Investors | 31 Mar 2026 |
| 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 | |||
| MORGAN STANLEY | 4.1% | -58% | $114,614,818 | -$163,643,000 | 5,988,235 | -59% | Morgan Stanley | 28 Feb 2026 |
| 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 Mar 2026, 255 institutional investors reported holding 152,363,245 shares of Klaviyo, Inc. - Common Stock (KVYO). This represents 104% of the company’s total 146,298,238 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of Klaviyo, Inc. - Common Stock (KVYO) together control 78% 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 | 13% | 18,852,778 | 0% | 55% | $366,875,060 |
| Capital International Investors | 8% | 11,703,859 | -8.5% | 0.05% | $227,757,096 |
| FMR LLC | 6.7% | 9,787,082 | +17% | 0.01% | $190,456,620 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.1% | 7,531,915 | 0% | 0.01% | $146,571,066 |
| Whale Rock Capital Management LLC | 4.7% | 6,825,206 | +123% | 1.7% | $132,818,509 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.2% | 6,162,720 | 0% | 0% | $119,926,531 |
| WELLINGTON MANAGEMENT GROUP LLP | 3.7% | 5,479,443 | 0.02% | $106,629,960 | |
| MORGAN STANLEY | 3.5% | 5,067,690 | -65% | 0.01% | $98,617,249 |
| BlackRock, Inc. | 3% | 4,354,335 | +17% | 0% | $84,735,360 |
| JPMORGAN CHASE & CO | 2.9% | 4,299,977 | +21% | 0.01% | $81,570,586 |
| Sands Capital Alternatives, LLC | 2.5% | 3,649,678 | 0% | 17% | $71,022,734 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 2% | 2,941,998 | +3.1% | 0.19% | $57,251,272 |
| AMERICAN CENTURY COMPANIES INC | 2% | 2,923,295 | +0.97% | 0.03% | $56,887,356 |
| TWO SIGMA INVESTMENTS, LP | 2% | 2,891,890 | +30% | 0.05% | $56,276,179 |
| FEDERATED HERMES, INC. | 1.8% | 2,639,485 | -9% | 0.08% | $51,364,378 |
| Fiera Capital Corp | 1.6% | 2,399,260 | +2.9% | 0.16% | $46,689,600 |
| MILLENNIUM MANAGEMENT LLC | 1.6% | 2,348,235 | +38% | 0.03% | $45,696,653 |
| Greenoaks Capital Partners LLC | 1.6% | 2,316,796 | 0% | 2% | $45,084,850 |
| GOLDMAN SACHS GROUP INC | 1.5% | 2,161,293 | +42% | 0.01% | $42,058,762 |
| Capital World Investors | 1.4% | 2,040,048 | +78% | 0.01% | $39,699,334 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.2% | 1,773,550 | +6% | 0% | $34,526,913 |
| Point72 Asset Management, L.P. | 1.1% | 1,672,359 | +91% | 0.06% | $32,544,106 |
| RENAISSANCE TECHNOLOGIES LLC | 1.1% | 1,640,844 | -7% | 0.05% | $31,930,824 |
| Bank of New York Mellon Corp | 1% | 1,508,137 | +8.9% | 0.01% | $29,348,347 |
| ArrowMark Colorado Holdings LLC | 1% | 1,488,481 | +83% | 0.77% | $28,965,840 |
Institutional Holders of Klaviyo, Inc. - Common Stock (KVYO) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 152,363,245 | $2,962,872,850 | -$140,668,045 | $19.46 | 255 |
| 2025 Q4 | 158,333,716 | $5,141,090,923 | +$589,640,441 | $32.47 | 259 |
| 2025 Q3 | 141,302,121 | $3,914,230,873 | +$188,134,076 | $27.69 | 274 |
| 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 |