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MSI

Mitsui Sumitomo Insurance Portfolio holdings

AUM $4.15B
This Fund
S&P 500
This Quarter Est. Return
-8.48%
1 Year Est. Return
–
3 Year Est. Return
–
5 Year Est. Return
–
10 Year Est. Return
–
AUM
$3.54B
AUM Growth
–
Cap. Flow
+$3.72B
Cap. Flow %
105.1%
Top 10 Hldgs %
100%
Holding
1
New
1
Increased
–
Reduced
–
Closed
–

Top Buys

Rank Stock Value
1
WRB icon
W.R. Berkley
WRB
+$3.72B

Top Sells

No sells this quarter

Sector Composition

Rank Sector Weight
1 Financials 100%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
WRB icon
1
W.R. Berkley
WRB
$25.4B
$3.54B 100%
+50,526,511
New +$3.72B

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Mitsui Sumitomo Insurance's Q4 2025 Portfolio in Review

Q4 2025 is the first quarter with a 13F filing on record for Mitsui Sumitomo Insurance, which disclosed 1 position worth $3.54B. Its ten largest holdings account for 100% of the portfolio.

Its largest position is W.R. Berkley: 50,526,511 shares worth $3.54B.

By sector, the portfolio is most concentrated in Financials at 100% of assets.

  • Mitsui Sumitomo Insurance's largest Q4 2025 buy was W.R. Berkley: 50,526,511 shares worth $3.54B.
  • Mitsui Sumitomo Insurance's ten largest holdings make up 100% of its $3.54B portfolio in Q4 2025.
  • Mitsui Sumitomo Insurance disclosed 1 position in Q4 2025, its first 13F filing on record.

Based on Mitsui Sumitomo Insurance's 13F filing for Q4 2025, filed 17 Feb 2026.