Security key
49845K101
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 141,302,121
- Total 13F value
- $3,914,230,873
- Share change
- +7,800,344
- Put/Call ratio
- 54%
- SEC-reported price per share
- $27.69
- Number of holders
- 274
- Value change
- +$188,134,076
- Number of buys
- 165
- Number of sells
- 117
- Shares outstanding
- 146,298,238
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2025
Institutions
274
Top holders
10
KVYO full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2025
Previous quarter: Q2 2025
Klaviyo, Inc. SEC filings
Klaviyo, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 49845K101
Recent filing periods:
Ownership snapshot
Top reported holders of KVYO - Klaviyo, Inc. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Hallen Ed
Disclosed value leader
SUMMIT PARTNERS L P
Comparable rows
15/15
Latest evidence
30 Sep 2025
13D/G
13F
3/4/5
Lead comparable stake: 19%
13D/G row: Hallen Ed
Showing 1-6 of 15 holder rows.
Quick read
Hallen Ed leads the comparable SEC ownership view at 19%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Hallen Ed's linked filing trail.
Comparable ownership
Top 5
Hallen Ed
19%
SHOPIFY INC.
19%
SUMMIT PARTNERS L P
12%
Accomplice Fund I, L.P.
10%
VANGUARD GROUP INC
10%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Hallen Ed |
13D/G
|
19%
|
$910,422,224
32,879,098 shares
|
$0 | 30 Sep 2025 |
| SHOPIFY INC. |
13D/G
Shopify Strategic Holdings 3 LLC
|
19%
|
$886,841,973
32,027,518 shares
|
+$28,607,813 | 29 Aug 2025 |
| SUMMIT PARTNERS L P |
13F
13D/G
3/4/5
Company · 10%+ Owner
|
12%
from 13D/G
|
$1,035,196,785
30,827,778 shares
|
— | 30 Jun 2025 |
| Accomplice Fund I, L.P. |
13D/G
3/4/5
Jeff Fagnan · 10%+ Owner
|
10%
|
$322,309,237
11,137,154 shares
|
$0 | 31 Mar 2025 |
| VANGUARD GROUP INC |
13D/G
13F
The Vanguard Group · Company
|
10%
|
$365,938,152
10,728,178 shares
|
$0 | 30 Jun 2025 |
| FMR LLC |
13D/G
13F
Company
|
6.7%
|
$228,166,449
8,240,031 shares
|
$0 | 30 Sep 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
274
Shares
141,302,121
Rows available
274
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
254
Q3 2025 holders
274
Holder diff
20
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 value | Q3 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend