Stock ownership · SEC 13F · Q4 2025

MARTIN MARIETTA MATLS INC

Institutional ownership of MARTIN MARIETTA MATLS INC (CUSIP 573284106) - who holds it, how concentrated it is, and what moved last quarter.

$3.7M
Reported value
6
Institutions
100%
Top-5 share

The verdict

According to SEC Form 13F-HR filings in this corpus, MARTIN MARIETTA MATLS INC ranks #604 of 775 tracked securities by reported institutional value (largest first), matching the /stocks listing among names with ≥5 reporting holders. 6 institutions report $3.7M as of Q4 2025, with ownership heavily concentrated in a handful of holders.

6
institutions hold it
$3.7M
reported 13F value
100%
held by top 5
#604
of 775 by value

Based on long positions reported to the SEC as of Q4 2025; 13F omits shorts, options and non-US holdings.

According to SEC Form 13F-HR filings in this corpus, MARTIN MARIETTA MATLS INC ranks #604 of 775 tracked securities by reported institutional value (largest first), matching the /stocks listing among names with ≥5 reporting holders.

How 13F ownership is computed · All tracked stocks · Concentration rankings

SEC Form 13F-HR ownership desk

CUSIP 573284106 · Q4 2025 $4M reported

VALUE-LIGHT · HOLDERS-FOCUS · CONC-DOM · PHOTO-FINISH · ACTIVITY-MID · BOOK-FULL

  • VALUE-LIGHT #604/775
  • HOLDERS-FOCUS 6 filers
  • CONC-DOM 100% top-5
  • PHOTO-FINISH SOUTHSTATE BK
  • ACTIVITY-MID 3 new
  • BOOK-FULL 8Q history

Photo-finish peer on reported value: SOUTHSTATE BK CORP

Read with: Ownership concentration guide - MARTIN MARIETTA MATLS INC's top-five holders account for 100% of reported value — read concentration before treating any single filer as a signal.

Reported-value neighbourhood · MARTIN MARIETTA MATLS INC

Nearest tracked securities by aggregate 13F reported value, not a full corpus reprint.

MERCURY GEN NEW · near$4MMARTIN MARIETTA MATLS · this…$4MSOUTHSTATE BK · near$4MEVERGY · near$4MUNIVERSAL HLTH SVCS · near$4M
Aggregate reported institutional value ($)
Largest institutional holders of MARTIN MARIETTA MATLS INC
  1. 1
    Pacer Advisors, Inc. $3.1M
  2. 2
    MARINER INVESTMENT GROUP LLC $311K
  3. 3
    Anchor Investment Management, LLC $271K
  4. 4
    CHELSEA COUNSEL CO $12K
  5. 5
    Bell Investment Advisors, Inc $7K
  6. 6
    TD Capital Management LLC $3K

Top 6 reported holders by value · Q4 2025

Institutional ownership over time

The number of institutions reporting a MARTIN MARIETTA MATLS INC position has risen from 3 to 6 over the last 8 quarters of 13F filings.

24681012 Q1'24Q2'24Q3'24Q4'24Q1'25Q2'25Q3'25Q4'25 6
Distinct 13F filers holding MARTIN MARIETTA MATLS INC, by quarter

Top Institutional Holders

# Institution Shares Value Share of reported
1 Pacer Advisors, Inc. 4,947 $3.1M 83.6%
2 MARINER INVESTMENT GROUP LLC 500 $311K 8.5%
3 Anchor Investment Management, LLC 435 $271K 7.4%
4 CHELSEA COUNSEL CO 20 $12K 0.3%
5 Bell Investment Advisors, Inc 11 $7K 0.2%
6 TD Capital Management LLC 4 $3K 0.1%

Investment Discretion

SEC Form 13F requires each institutional filer to report whether it exercises sole or shared discretion over a position. Among MARTIN MARIETTA MATLS INC's reported holders for Q4 2025, by reported value:

Sole discretion (SOLE)
91.5%
Shared-defined discretion (DFND)
8.5%

Latest Quarter Activity · Q4 2025

New positions (3)

Pacer Advisors, Inc. $3.1M
MARINER INVESTMENT GROUP LLC $311K
Anchor Investment Management, LLC $271K

Complete exits (6)

CIBC Bancorp USA Inc. exited
Trust Investment Advisors exited
CIBC Private Wealth Group LLC exited
KERR FINANCIAL PLANNING Corp exited
JPMORGAN CHASE & CO (JPM, AMJB, VYLD, JPM-PC, JPM-PD, JPM-PJ, JPM-PK, JPM-PL, JPM-PM) exited
Cherry Tree Wealth Management, LLC exited

Frequently Asked Questions

How many institutions hold MARTIN MARIETTA MATLS INC?▼
MARTIN MARIETTA MATLS INC is held by 6 institutional investors per the latest SEC Form 13F filings as of Q4 2025.
Where does MARTIN MARIETTA MATLS INC sit among tracked securities?▼
According to SEC Form 13F-HR filings in this corpus, MARTIN MARIETTA MATLS INC ranks #604 of 775 tracked securities by reported institutional value (largest first), matching the /stocks listing among names with ≥5 reporting holders. The ordinal is recomputed live among securities with ≥5 reporting holders. See /methodology/#corpus-placement.
What is the total institutional value of MARTIN MARIETTA MATLS INC?▼
Institutions report $3.7M of MARTIN MARIETTA MATLS INC as of Q4 2025.
How concentrated is ownership of MARTIN MARIETTA MATLS INC?▼
The top five institutional holders account for 100% of the reported institutional value in MARTIN MARIETTA MATLS INC, making ownership heavily concentrated in a handful of holders.
Who is the largest institutional holder of MARTIN MARIETTA MATLS INC?▼
Pacer Advisors, Inc. is the largest reported holder of MARTIN MARIETTA MATLS INC with $3.1M across 4,947 shares as of Q4 2025.

Nationwide stocks with similar institutional value or holder count

Two 13F-derived peer sets for MARTIN MARIETTA MATLS INC: nearest aggregate reported value and nearest institutional holder count, not catalog browse links.

Similar reported value

Nearest stocks by aggregate 13F reported value ($3.7M here).

SOUTHSTATE BK CORP $3.7M MERCURY GEN CORP NEW $3.7M EVERGY INC $3.7M UNIVERSAL HLTH SVCS INC $3.7M

Similar holder count

Nearest stocks by number of disclosing 13F holders (6 here).

AKAMAI TECHNOLOGIES INC 6 ALEXANDRIA REAL ESTATE EQ IN 6 ALLETE INC 6 ALLIANCEBERNSTEIN HLDG L P 6

Source: U.S. Securities and Exchange Commission (SEC) - EDGAR Form 13F-HR institutional holdings filings · Q4 2025 13F-HR discloses long US-listed equity positions of managers with $100M+ qualifying assets, filed within 45 days of period end. Short positions and most derivatives are not disclosed.

PlainFundData is rendered directly from SEC EDGAR Form 13F-HR institutional holdings filings, no number is typed in by an editor. Holder lists, concentration, and reported value on this page are aggregated live from those 13F-HR extracts. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-05-16.