Stock ownership · SEC 13F · Q4 2025

ANTERO RESOURCES CORP

Who owns ANTERO RESOURCES CORP (CUSIP 03674X106)? A look at the institutions behind it, how tightly they hold it, and the latest quarter's moves.

$2.5M
Reported value
3
Institutions
100%
Top-5 share

The verdict

As of Q4 2025, 3 institutions report $2.5M in ANTERO RESOURCES CORP positions, ownership that is dominated by its top few institutional owners.

3
institutions hold it
$2.5M
reported 13F value
100%
held by top 5

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

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

SEC Form 13F-HR ownership desk

CUSIP 03674X106 · Q4 2025 $3M reported

VALUE-TRACE · HOLDERS-FOCUS · CONC-DOM · PHOTO-UNK · ACTIVITY-LIGHT · BOOK-FULL

  • VALUE-TRACE $2.5M
  • HOLDERS-FOCUS 3 filers
  • CONC-DOM 100% top-5
  • PHOTO-UNK No peer
  • ACTIVITY-LIGHT 2 new
  • BOOK-FULL 8Q history

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

Largest institutional holders of ANTERO RESOURCES CORP
  1. 1
    MARINER INVESTMENT GROUP LLC $1.3M
  2. 2
    Pacer Advisors, Inc. $1.2M
  3. 3
    Bell Investment Advisors, Inc $2K

Top 3 reported holders by value · Q4 2025

Institutional ownership over time

The number of institutions reporting a ANTERO RESOURCES CORP position has held steady from 3 to 3 over the last 8 quarters of 13F filings.

02468 Q1'24Q2'24Q3'24Q4'24Q1'25Q2'25Q3'25Q4'25 3
Distinct 13F filers holding ANTERO RESOURCES CORP, by quarter

Top Institutional Holders

# Institution Shares Value Share of reported
1 MARINER INVESTMENT GROUP LLC 38,500 $1.3M 52.3%
2 Pacer Advisors, Inc. 35,051 $1.2M 47.6%
3 Bell Investment Advisors, Inc 46 $2K 0.1%

Investment Discretion

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

Shared-defined discretion (DFND)
52.3%
Sole discretion (SOLE)
47.7%

Latest Quarter Activity · Q4 2025

New positions (2)

MARINER INVESTMENT GROUP LLC $1.3M
Pacer Advisors, Inc. $1.2M

Complete exits (6)

CIBC Private Wealth Group LLC exited
Watts Gwilliam & Co., LLC exited
Caerus Investment Advisors, LLC exited
Greenfield Seitz Capital Management, 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

Frequently Asked Questions

How many institutions hold ANTERO RESOURCES CORP?▼
ANTERO RESOURCES CORP is held by 3 institutional investors per the latest SEC Form 13F filings as of Q4 2025.
What is the total institutional value of ANTERO RESOURCES CORP?▼
Institutions report $2.5M of ANTERO RESOURCES CORP as of Q4 2025.
How concentrated is ownership of ANTERO RESOURCES CORP?▼
The top five institutional holders account for 100% of the reported institutional value in ANTERO RESOURCES CORP, making ownership dominated by its top few institutional owners.
Who is the largest institutional holder of ANTERO RESOURCES CORP?▼
MARINER INVESTMENT GROUP LLC is the largest reported holder of ANTERO RESOURCES CORP with $1.3M across 38,500 shares as of Q4 2025.

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.