Security key
G9618E107
WHITE MOUNTAINS INSURANCE GROUP LTD - COMMON (WTM)
CUSIP: G9618E107
Q3 2018 13F Holders as of 30 Sep 2018
- Security type / class
- Equity / COMMON
- Total 13F shares
- 2,774,074
- Total 13F value
- $2,596,081,055
- Share change
- -18,033
- SEC-reported price per share
- $935.86
- Number of holders
- 238
- Value change
- -$16,819,815
- Number of buys
- 86
- Number of sells
- 108
- Shares outstanding
- 2,481,286
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2018
Institutions
238
Top holders
10
WTM full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2018
Previous quarter: Q2 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
30 Jun 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.
Open SEC evidence
Opens VANGUARD GROUP INC's linked filing trail.
Comparable ownership
Top 5
VANGUARD GROUP INC
11%
WELLINGTON MANAGEMENT GROUP LLP
8.9%
Boston Partners
6.5%
BlackRock Finance, Inc.
5.4%
DIMENSIONAL FUND ADVISORS LP
4.6%
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%
|
$245,860,000
271,186 shares
|
— | 30 Jun 2018 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
Company
|
8.9%
|
$199,626,000
220,189 shares
|
— | 30 Jun 2018 |
| Boston Partners |
13F
Company
|
6.5%
|
$145,321,000
160,290 shares
|
— | 30 Jun 2018 |
| BlackRock Finance, Inc. |
13F
Company
|
5.4%
|
$120,454,000
132,863 shares
|
— | 30 Jun 2018 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
4.6%
|
$102,908,000
113,510 shares
|
— | 30 Jun 2018 |
| FULLER & THALER ASSET MANAGEMENT, INC. |
13F
Company
|
4.5%
|
$100,727,000
111,103 shares
|
— | 30 Jun 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 Q3 2018
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
238
Shares
2,774,074
Rows available
238
| 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 2018 vs Q2 2018 Across Filers
Q2 2018 holders
227
Q3 2018 holders
238
Holder diff
11
| Investor | Q2 2018 Shares | Q3 2018 Shares | Share Diff | Share Chg % | Q2 2018 value | Q3 2018 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend