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GARTNER INC

IT

Holders

2

Combined Value

$544.83M

Combined Shares

3,440,863

Current Price

$148.17

52W High

$409.98

vs 52W High

−63.9%

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.

$88.66$251.25$413.85$576.44Q2'24Q3'24Q4'24Q1'25Q2'25Q3'25Q4'25Q1'26Q2 2024 · implied price $449.06Q3 2024 · implied price $506.76Q4 2024 · implied price $484.47Q1 2025 · implied price $419.74Q2 2025 · implied price $404.22Q3 2025 · implied price $262.87Q4 2025 · implied price $252.28Q1 2026 · implied price $158.34Tom Gayner - Markel Group · bought 5,700 shares @ ~$449.06 · Q2 2024 (new position)Harris Associates (Oakmark Funds) · bought 1,711 shares @ ~$449.06 · Q2 2024 (new position)Jim Simons - Renaissance Technologies · bought 1,009 shares @ ~$449.06 · Q2 2024 (new position)Jim Simons - Renaissance Technologies · bought 29,300 shares @ ~$506.76 · Q3 2024Harris Associates (Oakmark Funds) · sold 1,246 shares @ ~$506.76 · Q3 2024Jim Simons - Renaissance Technologies · sold 6,900 shares @ ~$484.47 · Q4 2024Harris Associates (Oakmark Funds) · sold 465 shares @ ~$506.76 · Q4 2024 (sold out)Jim Simons - Renaissance Technologies · bought 64,400 shares @ ~$419.74 · Q1 2025Jim Simons - Renaissance Technologies · bought 126,200 shares @ ~$404.22 · Q2 2025Jim Simons - Renaissance Technologies · sold 151,100 shares @ ~$262.87 · Q3 2025Tom Gayner - Markel Group · sold 5,700 shares @ ~$404.22 · Q3 2025 (sold out)Harris Associates (Oakmark Funds) · bought 963,984 shares @ ~$252.28 · Q4 2025 (new position)Jim Simons - Renaissance Technologies · bought 15,300 shares @ ~$252.28 · Q4 2025Harris Associates (Oakmark Funds) · bought 2,171,790 shares @ ~$158.34 · Q1 2026Jim Simons - Renaissance Technologies · bought 226,880 shares @ ~$158.34 · 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
Harris Associates (Oakmark Funds)$496.52M0.66%~$187.22−20.9%BUY Q1 2026Q1 2026
Jim Simons - Renaissance Technologies$48.31M0.08%~$216.98−31.7%BUY Q1 2026Q1 2026

Recent Activity

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

QuarterInvestorActionEst. ValueEst. Price
Q1 2026Harris Associates (Oakmark Funds)BUY+$343.88M~$158.34
Q1 2026Jim Simons - Renaissance TechnologiesBUY+$35.92M~$158.34
Q4 2025Harris Associates (Oakmark Funds)NEW BUY+$243.19M~$252.28
Q4 2025Jim Simons - Renaissance TechnologiesBUY+$3.86M~$252.28
Q3 2025Jim Simons - Renaissance TechnologiesSELL−$39.72M~$262.87
Q3 2025Tom Gayner - Markel GroupSOLD OUT−$2.30M~$404.22
Q2 2025Jim Simons - Renaissance TechnologiesBUY+$51.01M~$404.22
Q1 2025Jim Simons - Renaissance TechnologiesBUY+$27.03M~$419.74
Q4 2024Jim Simons - Renaissance TechnologiesSELL−$3.34M~$484.47
Q4 2024Harris Associates (Oakmark Funds)SOLD OUT−$235.6K~$506.76
Q3 2024Jim Simons - Renaissance TechnologiesBUY+$14.85M~$506.76
Q3 2024Harris Associates (Oakmark Funds)SELL−$631.4K~$506.76
Q2 2024Tom Gayner - Markel GroupNEW BUY+$2.56M~$449.06
Q2 2024Harris Associates (Oakmark Funds)NEW BUY+$768.3K~$449.06
Q2 2024Jim Simons - Renaissance TechnologiesNEW BUY+$453.1K~$449.06

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 202623,440,863+230.2%$544.83M$158.34
Q4 202521,042,193+1556.7%$262.92M$252.28
Q3 2025162,909-71.4%$16.54M$262.87
Q2 20252219,709+135.0%$88.81M$404.22
Q1 2025293,509+221.2%$39.25M$419.74
Q4 2024229,109-20.2%$14.10M$484.47
Q3 2024336,474+333.2%$18.48M$506.76
Q2 202438,420—$3.78M$449.06