Klaviyo Ownership | Who Owns Klaviyo?

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Klaviyo Ownership Summary

Klaviyo is owned by 46.84% institutional investors, 0.43% insiders, and 52.73% retail investors. Summit partners l p is the largest institutional shareholder, holding 10.82% of KVYO shares.

KVYO Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Klaviyo	46.84%	0.43%	52.73%
Sector	Technology Stocks	143.99%	12.56%	-56.55%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Summit partners l p	30.83M	10.82%	$1.04B
Whale rock capital management	3.68M	1.29%	$123.72M
Sands capital ventures	3.52M	1.23%	$118.04M
Blackrock funding, inc. /de	3.42M	1.20%	$114.74M
Capital research global investors	2.72M	0.95%	$91.30M
American century companies	2.69M	0.94%	$90.18M
Cooper creek partners management	1.70M	0.60%	$57.11M
Voya investment management	1.42M	0.50%	$39.28M
Arrowstreet capital, limited partnership	1.39M	0.49%	$46.56M
Fiera capital	1.27M	0.45%	$42.65M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Summit partners l p	30.83M	73.01%	$1.04B
Sands capital ventures	3.52M	23.24%	$118.04M
Morangie management	469.76K	11.21%	$13.01M
Glynn capital management	705.26K	5.32%	$23.68M
Diker management	80.04K	2.53%	$2.69M
Cooper creek partners management	1.70M	1.77%	$57.11M
Whale rock capital management	3.68M	1.72%	$123.72M
Renaissance capital	104.95K	1.63%	$2.91M
Fortress investment group	300.00K	1.43%	$10.07M
Sandia investment management lp	15.00K	1.29%	$503.70K

Top Buyers

Holder	Shares	% Assets	Change
Cooper creek partners management	1.70M	1.77%	1.70M
American century companies	2.69M	0.05%	1.48M
Fiera capital	1.27M	0.14%	1.27M
Blackrock funding, inc. /de	3.42M	0.00%	1.10M
Zimmer partners, lp	719.64K	0.53%	719.64K

Top Sellers

Holder	Shares	% Assets	Change
Summit partners l p	30.83M	73.01%	-8.00M
1832 asset management	112.70K	0.00%	-2.14M
Claro advisors	-	-	-1.65M
Blue owl capital lp	-	-	-1.08M
Whale rock capital management	3.68M	1.72%	-645.30K

New Positions

Holder	Shares	% Assets	Change	Value
Cooper creek partners management	1.70M	1.77%	1.70M	$57.11M
Fiera capital	1.27M	0.14%	1.27M	$42.65M
Zimmer partners, lp	719.64K	0.53%	719.64K	$24.17M
Arrowmark colorado	611.00K	0.37%	611.00K	$20.52M
Delta global management lp	553.36K	1.24%	553.36K	$18.58M

Sold Out

Holder	Change
Fortitude family office	-15.00
Coldstream capital management	-22.00
True wealth design	-26.00
Harbour investments	-30.00
Headlands	-76.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2025	276	16.46%	133,466,971	15.94%	46	2.66%	178	14.84%	64	30.61%
Mar 31, 2025	236	18.00%	115,136,423	1.56%	41	2.32%	153	30.77%	49	8.89%
Dec 31, 2024	203	20.12%	113,904,613	1.63%	42	2.44%	119	30.77%	46	-4.17%
Sep 30, 2024	169	19.01%	112,077,303	1.23%	41	2.40%	91	16.67%	48	29.73%
Jun 30, 2024	142	0.71%	110,717,314	14.80%	41	3.06%	78	-25.00%	37	85.00%

Recent Insider Transactions

Date	Name	Role	Activity	Value
Oct 15, 2025	Rowland Stephen Eric	President	Sell	$173.01K
Oct 14, 2025	Bialecki Andrew	Chief Executive Officer	Sell	$3.98M
Oct 10, 2025	Whalen Amanda	Chief Financial Officer	Sell	$126.94K
Oct 10, 2025	Whalen Amanda	Chief Financial Officer	Sell	$248.44K
Oct 07, 2025	Bialecki Andrew	Chief Executive Officer	Sell	$366.47K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	6
2025 Q3	-	30
2025 Q2	1	15
2025 Q1	-	-
2024 Q4	-	-

KVYO Ownership FAQ

Who owns the most shares of Klaviyo?

Klaviyo’s largest shareholders are Summit partners l p (30.83M shares, 10.82%), Whale rock capital management (3.68M shares, 1.29%), and Sands capital ventures (3.52M shares, 1.23%). Together, they hold 13.35% of Klaviyo’s total shares outstanding.

Does Blackrock own Klaviyo?

BlackRock is not among the top 10 institutional shareholders of Klaviyo.

Who is Klaviyo’s biggest shareholder by percentage of total assets invested?

Summit partners l p is Klaviyo’s biggest shareholder by percentage of total assets invested, with 73.01% of its assets in 30.83M Klaviyo shares, valued at 1.04B$.

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