Superinvestor Tracker
← All Investors

GALLAGHER ARTHUR J & CO

AJG

Holders

2

Combined Value

$174.14M

Combined Shares

804,041

Current Price

$218.69

52W High

$327.34

vs 52W High

−33.2%

Investor Activity Chart

Quarterly buys (▲) and sells (▼) by tracked investors. Click a marker to view that investor's portfolio; hover for details. Price line is implied from 13F filings (value ÷ shares), not market data.

$190.85$250.89$310.93$370.97Q3'24Q4'24Q1'25Q2'25Q3'25Q4'25Q1'26Q3 2024 · implied price $281.37Q4 2024 · implied price $283.85Q1 2025 · implied price $345.24Q2 2025 · implied price $320.12Q3 2025 · implied price $309.74Q4 2025 · implied price $258.79Q1 2026 · implied price $216.58Jim Simons - Renaissance Technologies · bought 90,700 shares @ ~$281.37 · Q3 2024 (new position)George Soros - Soros Fund Management · bought 300,000 shares @ ~$283.85 · Q4 2024 (new position)Jim Simons - Renaissance Technologies · bought 82,500 shares @ ~$283.85 · Q4 2024Andreas Halvorsen - Viking Global Investors · bought 666,552 shares @ ~$345.24 · Q1 2025 (new position)Jim Simons - Renaissance Technologies · bought 145,800 shares @ ~$345.24 · Q1 2025George Soros - Soros Fund Management · sold 300,000 shares @ ~$283.85 · Q1 2025 (sold out)Andreas Halvorsen - Viking Global Investors · bought 59,243 shares @ ~$320.12 · Q2 2025Jim Simons - Renaissance Technologies · bought 30,600 shares @ ~$320.12 · Q2 2025Jim Simons - Renaissance Technologies · bought 50,900 shares @ ~$309.74 · Q3 2025Andreas Halvorsen - Viking Global Investors · sold 725,795 shares @ ~$320.12 · Q3 2025 (sold out)Andreas Halvorsen - Viking Global Investors · bought 1,040,977 shares @ ~$258.79 · Q4 2025 (new position)Jim Simons - Renaissance Technologies · sold 396,180 shares @ ~$258.79 · Q4 2025Jim Simons - Renaissance Technologies · bought 72,280 shares @ ~$216.58 · Q1 2026Andreas Halvorsen - Viking Global Investors · sold 313,536 shares @ ~$216.58 · Q1 2026BUYSELLIMPLIED PRICE

Held By

Tracked investors currently holding this security, based on each investor's most recent 13F filing. Gain compares the current market price to each investor's estimated average buy price.

InvestorValue% of PortfolioAvg Buy PriceGainLast ActivityAs of
Andreas Halvorsen - Viking Global Investors$157.55M0.44%~$258.79−15.5%SELL Q1 2026Q1 2026
Jim Simons - Renaissance Technologies$16.59M0.03%~$221.94−1.5%BUY Q1 2026Q1 2026

Recent Activity

Latest position changes by tracked investors. Prices are estimates implied from 13F filings.

QuarterInvestorActionEst. ValueEst. Price
Q1 2026Andreas Halvorsen - Viking Global InvestorsSELL−$67.91M~$216.58
Q1 2026Jim Simons - Renaissance TechnologiesBUY+$15.65M~$216.58
Q4 2025Andreas Halvorsen - Viking Global InvestorsNEW BUY+$269.39M~$258.79
Q4 2025Jim Simons - Renaissance TechnologiesSELL−$102.53M~$258.79
Q3 2025Andreas Halvorsen - Viking Global InvestorsSOLD OUT−$232.34M~$320.12
Q3 2025Jim Simons - Renaissance TechnologiesBUY+$15.77M~$309.74
Q2 2025Andreas Halvorsen - Viking Global InvestorsBUY+$18.96M~$320.12
Q2 2025Jim Simons - Renaissance TechnologiesBUY+$9.80M~$320.12
Q1 2025Andreas Halvorsen - Viking Global InvestorsNEW BUY+$230.12M~$345.24
Q1 2025George Soros - Soros Fund ManagementSOLD OUT−$85.16M~$283.85
Q1 2025Jim Simons - Renaissance TechnologiesBUY+$50.34M~$345.24
Q4 2024George Soros - Soros Fund ManagementNEW BUY+$85.16M~$283.85
Q4 2024Jim Simons - Renaissance TechnologiesBUY+$23.42M~$283.85
Q3 2024Jim Simons - Renaissance TechnologiesNEW BUY+$25.52M~$281.37

Ownership History

Aggregate position across all tracked investors per quarter (options excluded). Implied price is the reported value divided by shares held.

PeriodHoldersTotal SharesΔ SharesTotal ValueImplied Price
Q1 20262804,041-23.1%$174.14M$216.58
Q4 202521,045,297+161.0%$270.51M$258.79
Q3 20251400,500-62.8%$124.05M$309.74
Q2 202521,075,395+9.1%$344.26M$320.12
Q1 20252985,552+108.3%$340.25M$345.24
Q4 20242473,200+421.7%$134.32M$283.85
Q3 2024190,700—$25.52M$281.37