Stock ownership · SEC 13F · Q4 2025

SIX FLAGS ENTERTAINMENT CORP

Who owns SIX FLAGS ENTERTAINMENT CORP (CUSIP 83001C108)? A look at the institutions behind it, how tightly they hold it, and the latest quarter's moves.

$415K
Reported value
3
Institutions
100%
Top-5 share

The verdict

As of Q4 2025, 3 institutions report $415K in SIX FLAGS ENTERTAINMENT CORP positions, ownership that is dominated by its top few institutional owners.

3
institutions hold it
$415K
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 83001C108 · Q4 2025 $0M reported

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

  • VALUE-TRACE $0.4M
  • HOLDERS-FOCUS 3 filers
  • CONC-DOM 100% top-5
  • PHOTO-UNK No peer
  • ACTIVITY-MID 3 new
  • BOOK-MID 7Q history

Read with: Ownership concentration guide - SIX FLAGS ENTERTAINMENT 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 SIX FLAGS ENTERTAINMENT CORP
  1. 1
    Aristides Capital LLC $207K
  2. 2
    Alpine Global Management, LLC $185K
  3. 3
    Anchor Investment Management, LLC $22K

Top 3 reported holders by value · Q4 2025

Institutional ownership over time

The number of institutions reporting a SIX FLAGS ENTERTAINMENT CORP position has risen from 1 to 3 over the last 7 quarters of 13F filings.

0123456 Q2'24Q3'24Q4'24Q1'25Q2'25Q3'25Q4'25 3
Distinct 13F filers holding SIX FLAGS ENTERTAINMENT CORP, by quarter

Top Institutional Holders

# Institution Shares Value Share of reported
1 Aristides Capital LLC 13,500 $207K 49.9%
2 Alpine Global Management, LLC 12,088 $185K 44.7%
3 Anchor Investment Management, LLC 1,440 $22K 5.3%

Investment Discretion

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

Sole discretion (SOLE)
100.0%

Latest Quarter Activity · Q4 2025

New positions (3)

Aristides Capital LLC $207K
Alpine Global Management, LLC $185K
Anchor Investment Management, LLC $22K

Complete exits (5)

CIBC Bancorp USA Inc. exited
CIBC Private Wealth Group LLC exited
Strategic Advocates LLC exited
JPMORGAN CHASE & CO (JPM, AMJB, VYLD, JPM-PC, JPM-PD, JPM-PJ, JPM-PK, JPM-PL, JPM-PM) exited
Bell Investment Advisors, Inc exited

Frequently Asked Questions

How many institutions hold SIX FLAGS ENTERTAINMENT CORP?▼
SIX FLAGS ENTERTAINMENT 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 SIX FLAGS ENTERTAINMENT CORP?▼
Institutions report $415K of SIX FLAGS ENTERTAINMENT CORP as of Q4 2025.
How concentrated is ownership of SIX FLAGS ENTERTAINMENT CORP?▼
The top five institutional holders account for 100% of the reported institutional value in SIX FLAGS ENTERTAINMENT CORP, making ownership dominated by its top few institutional owners.
Who is the largest institutional holder of SIX FLAGS ENTERTAINMENT CORP?▼
Aristides Capital LLC is the largest reported holder of SIX FLAGS ENTERTAINMENT CORP with $207K across 13,500 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.