Security key
G9618E107
WHITE MOUNTAINS INSURANCE GROUP LTD - COMMON (WTM)
CUSIP: G9618E107
Q1 2019 13F Holders as of 31 Mar 2019
- Security type / class
- Equity / COMMON
- Total 13F shares
- 2,806,019
- Total 13F value
- $2,596,957,316
- Share change
- +41,372
- SEC-reported price per share
- $925.48
- Number of holders
- 242
- Value change
- +$39,478,200
- Number of buys
- 87
- Number of sells
- 102
- Shares outstanding
- 2,481,286
Holder snapshot
6 signals
Security identity
1 source field
Report period
Q1 2019
Institutions
242
Top holders
10
WTM full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2019
Previous quarter: Q4 2018
WHITE MOUNTAINS INSURANCE GROUP LTD SEC filings
WHITE MOUNTAINS INSURANCE GROUP LTD company facts
WHITE MOUNTAINS INSURANCE GROUP LTD 13D/G history
Broader feeds
Reporting periods
Holder history for CUSIP G9618E107
Recent filing periods:
Ownership snapshot
Top reported holders of WTM - WHITE MOUNTAINS INSURANCE GROUP LTD - COMMON (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
VANGUARD GROUP INC
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
15/15
Latest evidence
31 Dec 2018
13F
Lead comparable stake: 11%
Showing 1-6 of 15 holder rows.
Quick read
VANGUARD GROUP INC leads the comparable SEC ownership view at 11%.
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.
Comparable ownership
Top 5
VANGUARD GROUP INC
11%
WELLINGTON MANAGEMENT GROUP LLP
9%
Boston Partners
7.1%
BlackRock Finance, Inc.
5.8%
DIMENSIONAL FUND ADVISORS LP
4.9%
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 |
|---|---|---|---|---|---|
| VANGUARD GROUP INC |
13F
Company
|
11%
|
$244,700,000
285,301 shares
|
— | 31 Dec 2018 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
Company
|
9%
|
$192,342,000
224,255 shares
|
— | 31 Dec 2018 |
| Boston Partners |
13F
Company
|
7.1%
|
$150,393,000
175,347 shares
|
— | 31 Dec 2018 |
| BlackRock Finance, Inc. |
13F
Company
|
5.8%
|
$123,502,000
143,991 shares
|
— | 31 Dec 2018 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
4.9%
|
$104,478,000
121,813 shares
|
— | 31 Dec 2018 |
| FIDUCIARY MANAGEMENT INC /WI/ |
13F
Company
|
4.9%
|
$103,612,000
120,803 shares
|
— | 31 Dec 2018 |
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 Q1 2019
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
242
Shares
2,806,019
Rows available
242
| 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 Q1 2019 vs Q4 2018 Across Filers
Q4 2018 holders
242
Q1 2019 holders
242
Holder diff
0
| Investor | Q4 2018 Shares | Q1 2019 Shares | Share Diff | Share Chg % | Q4 2018 value | Q1 2019 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend