CIK: 0001142206
Total reported value
$3.9B
Reporting period: 2026-03-31 · Number of holdings: 1
Mitsui Sumitomo Insurance Co Ltd disclosed 1 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $3.9B and a quarterly turnover rate of 9.5%.
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Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 100.0 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Unchanged WRB
+16.3% $353.0M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | WRB | Wr Berkley CORP | Stock-Financials | 100.00% | — | +16.34% |
Performance for Q3 2026
—
Performance Last 4 Quarters
—
Based on 0 months of available history
Based on 0% of reported portfolio value with available pricing
Mitsui Sumitomo Insurance Co Ltd's most significant position changes for 2026-03-31: Add: Wr Berkley CORP (WRB) — shares +16.34%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | WRB | Wr Berkley CORP | — | +16.34% | Add |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-14 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-17 | 13F-HR | View on EDGAR |
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