DH
DataHeimdall
Insider TradesSuperinvestorsGrand Portfolio
DH
DataHeimdall

Financial transparency data from public SEC filings.

Product

  • Insider Trades
  • Grand Portfolio

Company

  • About
  • Blog
  • Contact

Legal

  • Privacy Policy
  • Terms of Service
  • Disclaimer
© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

GLW

Superinvestors

Institutional investors holding GLW

Consensus →
InvestorFundWeightSharesValueQuarter
Stephen MandelLone Pine Capital4.03%3,718,147$505.6M2026Q1
Valley Forge Capital ManagementValley Forge Capital Management2.24%433,587$7.0M2010Q2
Viking Global InvestorsViking Global Investors2.07%3,611,000$92.3M2007Q2
Bill MillerMiller Value Partners1.46%1,149,350$14.9M2011Q4
Hillman Capital ManagementHillman Value Fund1.44%54,208$966K2013Q4
Lee AinslieMaverick Capital0.59%374,507$50.9M2026Q1
David KatzMatrix Asset Advisors0.45%182,151$3.8M2014Q1
Ruane CunniffSequoia Fund0.37%4,187,155$55.8M2013Q1
William Von MuefflingCantillon Capital Management0.36%561,770$8.8M2008Q3
Meridian / ArrowMarkMeridian Contrarian Fund0.36%108,700$2.2M2011Q1
David EinhornGreenlight Capital0.16%296,341$3.9M2009Q1
Robert OlsteinOlstein Capital Management0.15%5,000$6802026Q1
Mairs & PowerMairs & Power Growth Fund0.12%88,250$12.0M2026Q1
Bill NygrenOakmark Select Fund – Harris Associates0.06%0$74.0M2011Q4
Kenneth FisherFisher Asset Management0.00%14,748$2.0M2026Q1
Dodge & CoxDodge & Cox0.00%36,325$4.9M2026Q1
First Eagle Investment ManagementFirst Eagle Investment Management0.00%40$1K2017Q4

Congressional Activity

Congressional data coming soon

Insider Activity

62

Total trades

$107.7M

Volume

6

Buys

26

Sells

Last trade: May 22, 2026

Insider Tradeslast 90 days

No insider trades in the last 90 days.

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.