RKWD

ROCKWOOD RESEARCH · A CORPORATE FILINGS WEBSITE|STRAIGHT FROM THE SOURCE · SEC EDGAR|SPONSOREDYour message on this tape — bid on the Rockwood Ad Exchange · Rockwood Ad Exchange|

Rockwood Research

UNP

UNION PACIFIC CORP

Railroads, Line-Haul Operating · SIC 4011CIK 100885Held by 24 tracked managersEDGAR filings ↗10-K/10-Q ↗

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20 of 20 reported changes in each tracked manager’s latest 13F vs its prior quarter (2 reporting periods). Every change is listed — no cap.

ManagerActionShare change% chgEnding % of 13F bookPosition size

Viking Global Investors

Q2 2026Position history →

New+2,047,332—1.6%$0.56B

Capital World Investors

Q2 2026Position history →

Add+69,388+0.3%0.87%$7.38B

Capital Research Global Investors

Q2 2026Position history →

Add+206,008+1.2%0.65%$4.65B

Oakmark Funds (Harris Associates)

Q2 2026Position history →

Add+62,084+1.6%1.4%$1.05B

Palestra Capital Management

Q2 2026Position history →

Add+38,563+5.3%7.0%$0.21B

Q2 2026Position history →

Add+250,000+250.0%2.0%$0.10B

Renaissance Technologies

Q2 2026Position history →

Add+200,000+947.9%0.08%$0.06B

Fuller & Thaler Asset Management

Q2 2026Position history →

Add+73,977+54.8%0.15%$0.06B

Q2 2026Position history →

Add+10,750+7.2%0.33%$0.04B

Q2 2026Position history →

Add+8,054+25.0%0.05%$0.01B

EdgePoint Investment Group

Q2 2026Position history →

Trim(875,775)(40.4%)2.7%$0.35B

Q2 2026Position history →

Trim(355,600)(23.1%)6.0%$0.32B

Bridgewater Associates

Q2 2026Position history →

Trim(18,584)(3.5%)0.57%$0.14B

Lakewood Capital Management

Q2 2026Position history →

Trim(35,000)(25.6%)1.4%$0.03B

Select Equity Group

Q2 2026Position history →

Trim(45,327)(36.4%)0.11%$0.02B

Motley Fool Asset Management

Q2 2026Position history →

Trim(7,129)(14.9%)0.43%$0.01B

Gardner Russo & Quinn

Q2 2026Position history →

Trim(1,797)(6.5%)0.08%$0.01B

Q2 2026Position history →

Trim(775)(18.5%)0.01%$<0.01B

Fairview Capital Investment Management

Q2 2026Position history →

Trim(275)(13.7%)0.02%$<0.01B

Eminence Capital

Q1 2026Position history →

Exit(351,839)(100.0%)exited$0.08B

Changes compare each manager’s latest 13F with its prior quarter for the same CUSIP. “First observation” rows have no earlier stored filing to compare and are never counted as buys; “Split?” rows moved by a near-whole factor at an unchanged value and are treated as stock splits, not trades. Ending weight is the position after the change, not the size of the change.