Mitsui Sumitomo Insurance Co Ltd Insider Trading Activity

Institutional Filer10%+ Owner · CIK 1142206

94

Total trades

$705.5M

Total volume

Mar 3, 2026

Last activity

WRB

BERKLEY W R CORP

Mitsui Sumitomo Insurance Co Ltd, an institutional filer, recorded 94 transactions over the last 12 months across 1 company totaling $705.5M.

Activity concentrated in WRB with 94 filings. The largest single transaction was a purchase of WRB for $22.3M on Jan 22, 2026.

Performance Scorecard

Forward stock performance after each transaction by Mitsui Sumitomo Insurance Co Ltd. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.

PERIODAVG BUY RETURNAVG SELL AVOIDEDSUCCESS RATETRADES
30 days-1.0%—43%94
90 days-4.6%—4%94
120 days-3.7%—14%59

Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.

Price & Trades

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WRB · BERKLEY W R CORP

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Recent Trades

Showing the 50 most recent of 94 disclosed trades.

DATETICKERTYPESHARESPRICEVALUEROLE
Mar 3, 2026WRBBuy38,991$71.60$2.8M10%+ Owner
Mar 3, 2026WRBBuy73,185$72.52$5.3M10%+ Owner
Mar 2, 2026WRBBuy45,103$72.29$3.3M10%+ Owner
Mar 2, 2026WRBBuy100,897$73.20$7.4M10%+ Owner
Feb 27, 2026WRBBuy147,000$71.63$10.5M10%+ Owner
Feb 26, 2026WRBBuy145,491$71.65$10.4M10%+ Owner
Feb 26, 2026WRBBuy7,509$72.11$542K10%+ Owner
Feb 25, 2026WRBBuy14,356$71.77$1.0M10%+ Owner
Feb 25, 2026WRBBuy154,512$71.39$11.0M10%+ Owner
Feb 24, 2026WRBBuy103,192$70.52$7.3M10%+ Owner
Feb 24, 2026WRBBuy61,594$71.28$4.4M10%+ Owner
Feb 23, 2026WRBBuy16,410$71.80$1.2M10%+ Owner
Feb 23, 2026WRBBuy203,590$71.09$14.5M10%+ Owner
Feb 20, 2026WRBBuy160,582$70.80$11.4M10%+ Owner
Feb 19, 2026WRBBuy44,014$71.50$3.1M10%+ Owner
Feb 19, 2026WRBBuy300,986$70.53$21.2M10%+ Owner
Feb 18, 2026WRBBuy239,750$70.58$16.9M10%+ Owner
Feb 18, 2026WRBBuy45,250$70.96$3.2M10%+ Owner
Feb 17, 2026WRBBuy281,386$71.19$20.0M10%+ Owner
Feb 13, 2026WRBBuy280$71.18$20K10%+ Owner
Feb 13, 2026WRBBuy15,406$69.73$1.1M10%+ Owner
Feb 13, 2026WRBBuy4,314$70.30$303K10%+ Owner
Feb 12, 2026WRBBuy2,401$72.76$175K10%+ Owner
Feb 12, 2026WRBBuy17,599$71.88$1.3M10%+ Owner
Feb 11, 2026WRBBuy11,163$71.45$798K10%+ Owner
Feb 11, 2026WRBBuy9,289$69.59$646K10%+ Owner
Feb 11, 2026WRBBuy3,578$70.50$252K10%+ Owner
Feb 10, 2026WRBBuy12,082$69.92$845K10%+ Owner
Feb 10, 2026WRBBuy21,884$69.09$1.5M10%+ Owner
Feb 9, 2026WRBBuy35,952$69.27$2.5M10%+ Owner
Feb 9, 2026WRBBuy4,048$70.32$285K10%+ Owner
Feb 6, 2026WRBBuy15,694$70.46$1.1M10%+ Owner
Feb 6, 2026WRBBuy4,306$71.39$307K10%+ Owner
Feb 5, 2026WRBBuy6,528$70.79$462K10%+ Owner
Feb 5, 2026WRBBuy13,472$71.25$960K10%+ Owner
Feb 4, 2026WRBBuy2,585$69.77$180K10%+ Owner
Feb 4, 2026WRBBuy22,415$70.25$1.6M10%+ Owner
Feb 3, 2026WRBBuy8,347$67.75$565K10%+ Owner
Feb 3, 2026WRBBuy31,653$68.87$2.2M10%+ Owner
Feb 2, 2026WRBBuy237,062$67.71$16.1M10%+ Owner
Feb 2, 2026WRBBuy13,159$68.42$900K10%+ Owner
Jan 30, 2026WRBBuy195,000$68.36$13.3M10%+ Owner
Jan 29, 2026WRBBuy262,282$68.08$17.9M10%+ Owner
Jan 29, 2026WRBBuy27,718$68.56$1.9M10%+ Owner
Jan 28, 2026WRBBuy28,577$67.89$1.9M10%+ Owner
Jan 28, 2026WRBBuy280,354$67.58$18.9M10%+ Owner
Jan 27, 2026WRBBuy11,987$66.87$802K10%+ Owner
Jan 27, 2026WRBBuy800$65.86$53K10%+ Owner
Jan 27, 2026WRBBuy325,960$67.40$22.0M10%+ Owner
Jan 27, 2026WRBBuy8,582$68.56$588K10%+ Owner

Top Companies Traded

TICKERCOMPANYTRADESTOTAL VOLUME
WRBBERKLEY W R CORP94$705.5M