Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.
MLM
MARTIN MARIETTA MATERIALSData as of 2026 Q1 (03-31) · 13F snapshot
Summary
MARTIN MARIETTA MATERIALS (MLM) is held by 9 tracked hedge-fund managers, a combined reported value of ~$322.25M; the largest are Dan Loeb, Chase Coleman, Steven Cohen. This quarter: 1 added, 2 trimmed. 19 members of Congress have disclosed STOCK Act trades. Data as of 2026 Q1, from public SEC 13F filings, delayed up to ~45 days.
Attention · HighThis quarter · Quiet
Gurus holding9
Congress trades19
Price$577.33vs quarter-end-1.93%
Sectors1
This quarter's moves
Top holderDan LoebNew0
Added1
Trimmed / sold2
Dan LoebBig trim
Value $89.11M1.6% of portfolio550,0002007 Q2
Chase ColemanTrim
Value $86.79M3.8% of portfolio535,7002007 Q2
Bill GatesHold
Value $25.90M0.3% of portfolio250,0002008 Q2
Value $16.66M— of portfolio28,3002026 Q1
Value $4.59M— of portfolio7,8002026 Q1
Value $941.9K— of portfolio1,6002026 Q1
Value $470.9K— of portfolio8002026 Q1
Value $353.2K— of portfolio6002026 Q1
Value $353.2K— of portfolio6002026 Q1
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Dan Loeb | $89.11M | 1.6% | Big trim |
| Chase Coleman | $86.79M | 3.8% | Trim |
| Bill Gates | $25.90M | 0.3% | Hold |
| Ken GriffinCALL | $16.66M | — | — |
| Ken GriffinPUT | $4.59M | — | — |
| Izzy EnglanderCALL | $941.9K | — | — |
| Izzy EnglanderPUT | $470.9K | — | — |
| Steven CohenCALL | $353.2K | — | — |
| Steven CohenPUT | $353.2K | — | — |