Summit Partners’s Klaviyo KVYO Stock Holding History

Summit Partners’s Portfolio KVYO Stock Details KVYO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$285M	Hold	18,852,778	–	–	46.75%	1
2026 Q1	$367M	Hold	18,852,778	–	–	54.74%	1
2025 Q4	$612M	Hold	18,852,778	–	–	58.24%	1
2025 Q3	$522M	Sell	18,852,778 -11,975,000	-39%	-$387M	56.48%	1
2025 Q2	$1.04B	Sell	30,827,778 -8,000,000	-21%	-$253M	73.01%	1
2025 Q1	$1.17B	Sell	38,827,778 -2,000,000	-5%	-$80.7M	72.87%	1
2024 Q4	$1.68B	Sell	40,827,778 -5,600,000	-12%	-$214M	75.4%	1
2024 Q3	$1.64B	Sell	46,427,778 -1,313,851	-3%	-$38.1M	73.34%	1
2024 Q2	$1.19B	Hold	47,741,629	–	–	70.72%	1
2024 Q1	$1.22B	Hold	47,741,629	–	–	67.09%	1
2023 Q4	$1.33B	Sell	47,741,629 -1,770,318	-4%	-$52.4M	48.39%	1
2023 Q3	$1.71B	Buy	+49,511,947	New	+$1.7B	58.54%	1

Other funds holding KVYO

Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

WRCM

Whale Rock Capital Management Boston, Massachusetts $12.5B AUM 306.52% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

SCV

Sands Capital Ventures Arlington, Virginia $614M AUM 19.92% 1-Year Est. Return

Summit Partners's KVYO Position: Q2 2026 in Review

Summit Partners held its Klaviyo (KVYO) position steady in Q2 2026 at 18,852,778 shares worth $285M. The position accounts for 46.75% of the portfolio, ranked #1.

Summit Partners first reported a position in KVYO in Q3 2023 and has held it in 12 quarters since. The position peaked at $1.71B in Q3 2023. 276 funds tracked by Wall St. Rank hold KVYO as of Q2 2026.

Summit Partners held 18,852,778 shares of Klaviyo worth $285M as of Q2 2026.
Summit Partners left its Klaviyo share count unchanged in Q2 2026.
Klaviyo made up 46.75% of Summit Partners's portfolio in Q2 2026, its #1 holding.
Summit Partners first reported a position in Klaviyo in Q3 2023 and has held it in 12 quarters since.
Summit Partners's Klaviyo position peaked at $1.71B in Q3 2023.
276 funds tracked by Wall St. Rank held Klaviyo as of Q2 2026.

Based on Summit Partners's 13F filing for Q2 2026, filed 30 Jul 2026.