Vault-13

KLAVIYO INC KVYO

COM SER A · Common Stock · CUSIP 49845K101

B2C CRM and marketing automation platform

98 institutional holders
76,192,02776.2m shares reported held*
$2.6bnreported value*

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $34.48. Options: 6 managers hold calls ($1.4m notional), 6 hold puts ($1.2m).

Trends to Q3 2023

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$500k$1m$1.5mQ4 22 calls: $0Q4 22 puts: $0Q4 22P/C —Q1 23 calls: $0Q1 23 puts: $0Q1 23P/C —Q2 23 calls: $0Q2 23 puts: $0Q2 23P/C —Q3 23 calls: $1.4mQ3 23 puts: $1.2mQ3 23P/C 0.87
Numbers
QuarterCallsPutsP/C
Q4 2022$0$0—
Q1 2023$0$0—
Q2 2023$0$0—
Q3 2023$1.4m$1.2m0.87

Biggest buyers

SUMMIT PARTNERS L P New +49,511,947+49.5m
BlackRock Inc. New +1,871,239+1.9m
Clearbridge Investments, LLC New +1,864,233+1.9m
ALLIANCEBERNSTEIN L.P. New +1,571,685+1.6m
PRICE T ROWE ASSOCIATES INC /MD/ New +1,538,897+1.5m
JPMORGAN CHASE & CO New +1,513,168+1.5m
VANGUARD GROUP INC New +1,444,434+1.4m
Blue Owl Capital Holdings LP New +1,198,270+1.2m
Capital Research Global Investors New +1,002,876+1.0m
T. Rowe Price Investment Management, Inc. New +1,000,000+1.0m

Biggest sellers

None

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP New $686.5k19.9k shares
CITADEL ADVISORS LLC New $465.8k13.5k shares
SIMPLEX TRADING, LLC New $200.0k5.8k shares
GROUP ONE TRADING LLC New $58.6k1.7k shares
Cutler Group LLC / CA New $1.0k1.2k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. New $00 shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP New $562.4k16.3k shares
SIMPLEX TRADING, LLC New $310.0k9.0k shares
CITADEL ADVISORS LLC New $300.1k8.7k shares
GROUP ONE TRADING LLC New $48.3k1.4k shares
Cutler Group LLC / CA New $14.0k1.3k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. New $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Bialecki Andrew 13G · exempt (held before listing) +1.4 pts · filed 2026-08-05 36.5% +1.4 pts 75.3m≈ $1.1bn 2026-08-05
SHOPIFY INC. 13D · may seek influence +2.0 pts · filed 2026-08-31 20.8% +2.0 pts 33.4m≈ $504.4m 2026-08-31
Hallen Ed 13G · exempt (held before listing) filed 2025-11-05 19.4% 32.9m≈ $496.5m 2025-11-05
SUMMIT PARTNERS L P 13G · exempt (held before listing) -8.8 pts · filed 2025-11-13 12.0% -8.8 pts 18.9m≈ $284.7m 2025-11-13
Accomplice Fund I, L.P. 13G · exempt (held before listing) filed 2025-05-07 10.5% 11.1m≈ $168.2m 2025-05-07
Capital International Investors 13G · institution -1.3 pts · filed 2026-05-14 8.0% -1.3 pts 11.7m≈ $176.7m 2026-05-14
BlackRock, Inc. 13G · institution new · filed 2026-07-29 5.3% new 7.5m≈ $112.7m 2026-07-29
VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 5.2% new 7.5m≈ $113.7m 2026-04-29
VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-07-31 5.0% new 7.1m≈ $106.5m 2026-07-31

Fell to 5% or below in the last year: FMR LLC (4.7%, 2026-08-06), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC), MORGAN STANLEY (4.1%, 2026-03-06)

Insider purchases and sales in Q3 2023

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
101Q4 21: 0 buyingQ4 21: 0 sellingQ1 22: 0 buyingQ1 22: 0 sellingQ1 22Q2 22: 0 buyingQ2 22: 0 sellingQ3 22: 0 buyingQ3 22: 0 sellingQ3 22Q4 22: 0 buyingQ4 22: 0 sellingQ1 23: 0 buyingQ1 23: 0 sellingQ1 23Q2 23: 0 buyingQ2 23: 0 sellingQ3 23: 0 buyingQ3 23: 1 sellingQ3 23
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20210—0——
Q1 20220—0——
Q2 20220—0——
Q3 20220—0——
Q4 20220—0——
Q1 20230—0——
Q2 20230—0——
Q3 20230—1$339.8k—
DateInsiderTradeSharesPrice ValueTheir holding
2023-09-22 SUMMIT PARTNERS L P +5 10% owner · See footnote Sold 4,919,165 $28.32 $139.3m4.9m shares -100%
2023-09-22 Fagnan Jeff +3 10% owner Sold 1,770,049 $28.32 $50.1m1.8m shares -73%
2023-09-22 Astral Capital ABEH, LLC +2 10% owner Sold 816,907 $28.32 $23.1m816.9k shares -73%
2023-09-22 Ceran Jennifer Director Sold 12,000 $28.32 $339.8k12.0k shares -100%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q3 2023

#ManagerLocationShares Value% of their portfolioChangeShares change
1 SUMMIT PARTNERS L P 58.54% of their portfolio BOSTON, MA 49,511,94749.5m $1.7bn $1.7bn 58.54% New
2 BlackRock Inc. 0.00% of their portfolio New York, NY 1,871,2391.9m $64.6m $64.6m 0.00% New
3 Clearbridge Investments, LLC 0.06% of their portfolio NEW YORK, NY 1,864,2331.9m $64.3m $64.3m 0.06% New
4 ALLIANCEBERNSTEIN L.P. 0.02% of their portfolio NASHVILLE, TN 1,571,6851.6m $54.2m $54.2m 0.02% New
5 PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio BALTIMORE, MD 1,538,8971.5m $53.1m $53.1m 0.01% New
6 JPMORGAN CHASE & CO 0.01% of their portfolio NEW YORK, NY 1,513,1681.5m $52.2m $52.2m 0.01% New
7 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 1,444,4341.4m $49.8m $49.8m 0.00% New
8 Blue Owl Capital Holdings LP 29.42% of their portfolio New York, NY 1,198,2701.2m $38.1m $38.1m 29.42% New
9 Capital Research Global Investors 0.01% of their portfolio Los Angeles, CA 1,002,8761.0m $34.6m $34.6m 0.01% New
10 T. Rowe Price Investment Management, Inc. 0.02% of their portfolio BALTIMORE, MD 1,000,0001.0m $34.5m $34.5m 0.02% New
11 FMR LLC 0.00% of their portfolio BOSTON, MA 991,389991.4k $34.2m $34.2m 0.00% New
12 Avenir Management Company, LLC 75.91% of their portfolio NEW YORK, NY 963,390963.4k $33.2m $33.2m 75.91% New
13 STEADFAST CAPITAL MANAGEMENT LP 0.78% of their portfolio NEW YORK, NY 840,398840.4k $29.0m $29.0m 0.78% New
14 FRANKLIN RESOURCES INC 0.01% of their portfolio San Mateo, CA 706,586706.6k $24.4m $24.4m 0.01% New
15 Capital World Investors 0.00% of their portfolio LOS ANGELES, CA 700,000700.0k $24.1m $24.1m 0.00% New
16 NORGES BANK 0.00% of their portfolio OSLO, Q8 657,729657.7k $22.7m $22.7m 0.00% Not comparable
17 SANDS CAPITAL MANAGEMENT, LLC 0.08% of their portfolio ARLINGTON, VA 638,974639.0k $22.0m $22.0m 0.08% New
18 JANUS HENDERSON GROUP PLC 0.01% of their portfolio LONDON, X0 500,018500.0k $17.3m $17.3m 0.01% New
19 Dragoneer Investment Group, LLC 0.40% of their portfolio SAN FRANCISCO, CA 500,000500.0k $17.2m $17.2m 0.40% New
20 Sands Capital Alternatives, LLC 4.79% of their portfolio ARLINGTON, VA 469,431469.4k $16.2m $16.2m 4.79% New
21 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 429,238429.2k $14.8m $14.8m 0.00% New
22 Alyeska Investment Group, L.P. 0.10% of their portfolio CHICAGO, IL 422,111422.1k $14.6m $14.6m 0.10% New
23 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 397,069397.1k $13.7m $13.7m 0.00% New
24 Balyasny Asset Management L.P. 0.03% of their portfolio Chicago, IL 355,834355.8k $12.3m $12.3m 0.03% New
25 CITADEL ADVISORS LLC 0.01% of their portfolio MIAMI, FL 310,555310.6k $10.7m $10.7m 0.01% New
26 LORD, ABBETT & CO. LLC 0.02% of their portfolio JERSEY CITY, NJ 296,300296.3k $10.2m $10.2m 0.02% New
27 VOYA INVESTMENT MANAGEMENT LLC 0.01% of their portfolio ATLANTA, GA 290,761290.8k $10.0m $10.0m 0.01% New
28 BANK OF MONTREAL /CAN/ 0.00% of their portfolio TORONTO, A6 284,025284.0k $9.8m $9.8m 0.00% New
29 Whale Rock Capital Management LLC 0.17% of their portfolio Boston, MA 250,000250.0k $8.6m $8.6m 0.17% New
30 GREENOAKS LLC 1.07% of their portfolio ORINDA, CA 250,000250.0k $8.6m $8.6m 1.07% New
31 GLYNN CAPITAL MANAGEMENT LLC 1.84% of their portfolio MENLO PARK, CA 245,749245.7k $8.5m $8.5m 1.84% New
32 CAAS CAPITAL MANAGEMENT LP 1.73% of their portfolio NEW YORK, NY 225,963226.0k $7.8m $7.8m 1.73% New
33 GILDER GAGNON HOWE & CO LLC 0.11% of their portfolio New York, NY 201,829201.8k $7.0m $7.0m 0.11% New
34 AMERICAN CENTURY COMPANIES INC 0.01% of their portfolio KANSAS CITY, MO 200,000200.0k $6.9m $6.9m 0.01% New
35 Telemark Asset Management, LLC 1.05% of their portfolio BOSTON, MA 200,000200.0k $6.9m $6.9m 1.05% New
36 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 200,000200.0k $6.9m $6.9m 0.00% New
37 Monashee Investment Management LLC 2.32% of their portfolio Boston, MA 160,740160.7k $5.5m $5.5m 2.32% New
38 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 146,300146.3k $5.0m $5.0m 0.00% New
39 CAPSTONE INVESTMENT ADVISORS, LLC 0.09% of their portfolio NEW YORK, NY 100,037100.0k $3.5m $3.5m 0.09% New
40 Caisse de depot et placement du Quebec 0.01% of their portfolio Montreal, A8 100,000100.0k $3.5m $3.5m 0.01% New
41 Point72 Middle East FZE 0.17% of their portfolio DUBAI, C0 80,54480.5k $2.8m $2.8m 0.17% New
42 MARK ASSET MANAGEMENT LP 0.52% of their portfolio New York, NY 80,00080.0k $2.8m $2.8m 0.52% New
43 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio TORONTO, A6 80,00080.0k $2.8m $2.8m 0.01% New
44 Rokos Capital Management LLP 0.09% of their portfolio LONDON, X0 75,00075.0k $2.6m $2.6m 0.09% New
45 MARSHALL WACE, LLP 0.01% of their portfolio LONDON, X0 71,01371.0k $2.4m $2.4m 0.01% New
46 Granahan Investment Management, LLC 0.09% of their portfolio WALTHAM, MA 70,16870.2k $2.4m $2.4m 0.09% New
47 BROWN ADVISORY INC 0.00% of their portfolio BALTIMORE, MD 69,01869.0k $2.4m $2.4m 0.00% New
48 FIRST TRUST ADVISORS LP 0.00% of their portfolio Wheaton, IL 68,59268.6k $2.4m $2.4m 0.00% New
49 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 65,43865.4k $2.3m $2.3m 0.00% New
50 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 64,17464.2k $2.2m $2.2m 0.00% New
51 Squarepoint Ops LLC 0.01% of their portfolio NEW YORK, NY 57,82457.8k $2.0m $2.0m 0.01% New
52 NEUBERGER BERMAN GROUP LLC 0.00% of their portfolio NEW YORK, NY 57,78357.8k $2.0m $2.0m 0.00% New
53 MYDA Advisors LLC 0.74% of their portfolio WOODMERE, NY 57,00057.0k $2.0m $2.0m 0.74% New
54 Tabor Asset Management, LP 1.00% of their portfolio NEW YORK, NY 55,43555.4k $1.9m $1.9m 1.00% New
55 Man Group plc 0.01% of their portfolio LONDON, X0 47,00047.0k $1.6m $1.6m 0.01% New
56 Hudson Bay Capital Management LP 0.01% of their portfolio STAMFORD, CT 40,00040.0k $1.4m $1.4m 0.01% New
57 Avala Global LP 0.13% of their portfolio NEW YORK, NY 40,00040.0k $1.4m $1.4m 0.13% New
58 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 37,35037.4k $1.3m $1.3m 0.00% New
59 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 35,00035.0k $1.2m $1.2m 0.00% New
60 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 35,00035.0k $1.2m $1.2m 0.00% New
61 TIGER GLOBAL MANAGEMENT LLC 0.01% of their portfolio New York, NY 35,00035.0k $1.2m $1.2m 0.01% New
62 Ghisallo Capital Management LLC 0.12% of their portfolio BOSTON, MA 35,00035.0k $1.2m $1.2m 0.12% New
63 Davidson Kempner Capital Management LP 0.02% of their portfolio New York, NY 33,98434.0k $1.2m $1.2m 0.02% New
64 TUDOR INVESTMENT CORP ET AL 0.02% of their portfolio STAMFORD, CT 33,61333.6k $1.2m $1.2m 0.02% New
65 WINTON GROUP Ltd 0.09% of their portfolio LONDON, X0 31,67631.7k $1.1m $1.1m 0.09% New
66 Allspring Global Investments Holdings, LLC 0.00% of their portfolio CHARLOTTE, NC 31,49431.5k $1.1m $1.1m 0.00% New
67 Lighthouse Investment Partners, LLC 0.06% of their portfolio Palm Beach Gardens, FL 30,00030.0k $1.0m $1.0m 0.06% New
68 SOROS FUND MANAGEMENT LLC 0.02% of their portfolio NEW YORK, NY 23,00023.0k $793.5k $793.5k 0.02% New
69 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 21,08121.1k $727.3k $727.3k 0.00% New
70 Zimmer Partners, LP 0.02% of their portfolio NEW YORK, NY 21,00021.0k $724.5k $724.5k 0.02% New
71 Blackstone Inc. 0.00% of their portfolio NEW YORK, NY 20,00020.0k $690.0k $690.0k 0.00% New
72 SEVEN GRAND MANAGERS, LLC 0.92% of their portfolio BRONXVILLE, NY 20,00020.0k $690.0k $690.0k 0.92% New
73 Amundi 0.00% of their portfolio Paris, I0 17,42317.4k $549.3k $549.3k 0.00% New
74 Weiss Asset Management LP 0.04% of their portfolio BOSTON, MA 15,00015.0k $517.5k $517.5k 0.04% New
75 Laurion Capital Management LP 0.01% of their portfolio NEW YORK, NY 15,00015.0k $517.5k $517.5k 0.01% New
76 Sandia Investment Management LP 0.14% of their portfolio BOSTON, MA 15,00015.0k $517.5k $517.5k 0.14% New
77 Virtu Financial LLC 0.05% of their portfolio New York, NY 14,20314.2k $490.0k $490.0k 0.05% New
78 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 12,44212.4k $429.2k $429.2k 0.00% New
79 Alberta Investment Management Corp 0.00% of their portfolio EDMONTON, A0 11,34411.3k $391.4k $391.4k 0.00% New
80 Pictet Asset Management Holding SA 0.00% of their portfolio CAROUGE, V8 11,22811.2k $387.4k $387.4k 0.00% First filing
81 Verition Fund Management LLC 0.00% of their portfolio GREENWICH, CT 10,00010.0k $345.0k $345.0k 0.00% New
82 Woodline Partners LP 0.00% of their portfolio San Francisco, CA 8,0408.0k $277.4k $277.4k 0.00% New
83 SIMPLEX TRADING, LLC 0.01% of their portfolio CHICAGO, IL 7,9287.9k $273.0k $273.0k 0.01% New
84 Legal & General Group Plc 0.00% of their portfolio London, X0 5,0005.0k $172.2k $172.2k 0.00% New
85 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 5,0005.0k $172.5k $172.5k 0.00% New
86 Skylands Capital, LLC 0.03% of their portfolio Milwaukee, WI 5,0005.0k $172.5k $172.5k 0.03% New
87 Ensign Peak Advisors, Inc 0.00% of their portfolio SALT LAKE CITY, UT 4,7224.7k $162.9k $162.9k 0.00% New
88 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 2,4362.4k $84.0k $84.0k 0.00% New
89 Hidden Lake Asset Management LP 0.08% of their portfolio NEW YORK, NY 2,0002.0k $69.0k $69.0k 0.08% New
90 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 1,8851.9k $65.0k $65.0k 0.00% New
91 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 1,0071.0k $34.7k $34.7k 0.00% New
92 Columbus Hill Capital Management, L.P. 0.01% of their portfolio Short Hills, NJ 500500 $17.2k $17.2k 0.01% New
93 FNY Investment Advisers, LLC 0.00% of their portfolio NEW YORK, NY 220220 $7.0k $7.0k 0.00% New
94 BOURGEON CAPITAL MANAGEMENT LLC 0.00% of their portfolio Darien, CT 150150 $5.2k $5.2k 0.00% New
95 COMERICA BANK 0.00% of their portfolio DALLAS, TX 9898 $3.4k $3.4k 0.00% New
96 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 2020 $690 $690 0.00% New
97 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 1919 $656 $656 0.00% New
98 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% New