# Six Flags Entertainment Corporation (SIX) — Financial Analysis

**Exchange:** NYSE  
**Coverage as of:** 2026-Q2  
**Updated:** 2026-05-27  
**Tier:** Free primer (step 2 of 19)  
**Sibling pages:** /stocks/SIX/thesis · /stocks/SIX/memo

## Financial Snapshot

---
source: coverage-next-full
ticker: SIX
company: Six Flags Entertainment Corporation (NYSE: FUN)
step: 04
title: Financial Quality & Adversarial Research Sweep
date: 2026-05-27
---

### Step 04 — Financial Quality & Adversarial Research Sweep

#### 1. Statement Quality Adjustments

##### The Non-Cash Impairment Problem
FY2025 GAAP financials are heavily distorted by a $1.5B+ non-cash goodwill and intangible impairment charge recorded primarily in Q3 2025. The impairment arose from [S11]:
1. Former Six Flags reporting units (not Cedar Fair legacy parks) failing impairment tests
2. Revenue and earnings disappointments at legacy SIX parks post-merger integration
3. A "significant, sustained decline" in FUN's share price (from ~$35 peak post-merger to ~$13 low in 2025)

**Adjusted (economic) view:**
| Metric | GAAP FY2025 | Adjusted FY2025 |
|--------|------------|----------------|
| Operating Income | -$1,375M | ~$415M (ex-impairment, ex-integration) |
| Net Income | -$1,599M | ~$180M (est., ex-impairment and tax effects) |
| EPS | -$15.89 | ~+$1.76 (est.) |
| EBITDA | -$889M | $792M (management adj.) |

**Recommendation:** Use Adj EBITDA ($792M) as the primary earnings metric. GAAP EPS is uninformative.

##### Merger-Driven Accounting Complexities
1. **Goodwill:** Cedar Fair purchased legacy Six Flags for ~$1.9B (stock-for-stock). The goodwill and intangible asset created at the merger was allocated to former Six Flags reporting units. When those parks underperformed, the goodwill was written down. This is a mark-to-market of M&A overpayment risk — not an operating cash loss.
2. **Depreciation surge:** Combined D&A significantly higher than Cedar Fair standalone. Ride assets + merger FMV step-ups increase D&A. FY2025 D&A estimated at ~$445M.
3. **Interest expense:** Net interest expense of ~$360M in FY2025 on ~$5.1B net debt at SOFR + spread and fixed-rate notes (7.0-8.625% range). This is a real cash cost that constrains FCF.
4. **Integration Costs:** One-time merger costs embedded in FY2024-2025 operating expenses (legal, systems, rebranding, etc.). Management excludes these from adjusted metrics.

##### Earnings Quality Assessment
- **Revenue:** FACT — confirmed by SEC filings. Merger-enlarged base is genuine revenue, not accounting fiction.
- **Adj EBITDA:** ESTIMATE — management-disclosed, excludes impairment, SBC, integration costs, and some D&A adjustments. Generally accepted for theme park sector.
- **FCF:** FACT (-$152M) — a real constraint. The company is burning cash relative to capex during the investment cycle.

---

#### 2. Financial Red Flags

##### Red Flag 1: Goodwill Impairment Scale
The $1.5B impairment on former Six Flags assets, recorded just ~18 months after the merger closed, is a significant admission that merger economics underdelivered. Management stated: *"revenue and earnings not meeting expectations, as well as...a more significant, sustained decline in the Combined Company's share price."* [S11]

**Assessment:** This is a real economic red flag — the merger integration disrupted legacy Six Flags park operations. Guest counts fell, season pass penetration underperformed. The impairment is non-cash but signals execution risk in the integration thesis.

##### Red Flag 2: Debt Load
Net debt of $5.1B against Adj EBITDA of $792M = 6.4x net leverage — well above the company's 2026 target of <4.0x. Even at the 2027 target EBITDA, leverage remains high. The company's interest burden ($360M/yr) consumes 45% of Adj EBITDA, leaving limited cushion for any earnings shortfall. [S6, S11]

##### Red Flag 3: Free Cash Flow Negative
FY2025 FCF of -$152M means the company is consuming cash despite $792M in EBITDA, driven by $480M in capex. If the capex cycle does not produce the expected attendance/revenue lift, the investment case breaks. [S6]

##### Red Flag 4: Leadership Transition
CEO Zimmerman retired Dec 2025; CFO Witherow departed May 2026. New CEO John Reilly is from Palace Entertainment (smaller-scale parks). The leadership transition at a time of active portfolio rationalization and integration is a risk. [S15]

---

#### 3. Adversarial Research Sweep

##### Short-Seller Reports & Published Bear Cases
**EverytTicker/BeyondSPX analysis (2025):** Published bear case titled *"A Merger's Reckoning and the Path to a Leaner Regional Empire"* — argues that:
1. The merger was timed at peak cycle (2022-2023 post-COVID revenge travel boom)
2. Legacy Six Flags parks were structurally disadvantaged (urban/suburban footprint, shorter operating seasons, deferred maintenance)
3. Synergies of $120M are modest relative to $5B+ debt load
4. At 5-6x EV/EBITDA (depressed), the stock fairly reflects integration risk

**No formal short-seller reports (e.g., Hindenburg, Muddy Waters) found targeting FUN/SIX.**

##### Regulatory / Legal Issues
- **Safety incidents:** Theme parks inherently face ride safety incidents. Six Flags (legacy) has had historical fatalities at parks. No major ongoing litigation found in research scope, but this is an ongoing risk.
- **EEOC / Labor:** Seasonal workforce labor compliance is standard risk; no major investigations found.
- **Environmental:** No material environmental enforcement actions found.
- **Canada:** Canada's Wonderland is subject to Ontario labor and safety regulations — no material issues identified.

##### ESG & Governance Concerns
- **Sachem Head Capital (activist investor):** Jonathan Brudnick (Sachem Head Partner) joined the board October 2025. Sachem Head is known for constructive activism. His presence suggests institutional pressure for capital return / portfolio rationalization — consistent with the park divestitures announced in 2026.
- **CEO Selling:** Former CEO Zimmerman sold 244.84K shares in the 90 days through January 2026 (before his December 2025 retirement). This may reflect estate planning rather than negative signals, but bears monitoring.
- **LP → Corp conversion:** Cedar Fair converting from LP to corporation eliminated the partnership structure's pass-through tax advantages. This is a long-term governance positive (simplified structure) but was a short-term headwind for LP unitholders who valued the distribution.

##### Accounting Investigation
No SEC enforcement actions or accounting restatements found for FUN/Six Flags or Cedar Fair in the available research.

---

#### 4. Financial Trend Summary

| Metric | FY2021 | FY2022 | FY2023 | FY2024 | FY2025 |
|--------|--------|--------|--------|--------|--------|
| Revenue | $1.50B | $1.82B | $1.80B | $2.71B | $3.10B |
| Adj EBITDA | $524M | $673M | $464M | $629M | $792M |
| EBITDA Margin | 35.0% | 37.0% | 25.8% | 23.2% | 25.5% |
| Net Income | $130M | $308M | $125M | -$231M | -$1,599M |
| FCF | n/a | n/a | $105M | $53M | -$152M |

*FY2021-FY2023 = Cedar Fair standalone. FY2024 = Cedar Fair + legacy SIX from July 2024. FY2025 = full combined.*

**Trend interpretation:** Cedar Fair was a premium-quality business (35-37% EBITDA margins in 2021-2022) before the merger. The post-merger combined entity is diluting margins with lower-quality legacy Six Flags parks and elevated integration costs. The path to 40% margin target by 2028 requires significant operational improvement.

---

#### Source Index
[S4] Six Flags Q4 2025 / Full Year results, BusinessWire February 19, 2026
[S6] StockAnalysis.com annual financials FUN
[S11] StockTitan/SEC — 10-K FY2025 summary; goodwill impairment detail
[S14] BusinessWire March 2026 — park sale announcement
[S15] BusinessWire/RTTNews — CEO succession
[S20] EverytTicker/BeyondSPX — "Six Flags ($FUN): A Merger's Reckoning and the Path to a Leaner Regional Empire"
[S21] BusinessWire February 2025 — Q4 2024 results with $209M Q4 adjusted EBITDA

## Deeper Financial Analysis

The fundamental tier ($1.00) adds 8 dimensions not included here:

- Revenue Breakdown — segment revenue, geographic mix, product-line margins
- Financial Trends — QoQ momentum, leading indicators, inflection points
- Balance Sheet — debt structure, dilution risk, working capital dynamics
- Capital Allocation — ROIC, buyback cadence, reinvestment efficiency
- Earnings Analysis — beats/misses, guidance vs actuals, transcript highlights
- Competitive Positioning — market share, pricing power, peer benchmarks
- Industry Context — TAM, sector tailwinds/headwinds, regulatory backdrop

**API endpoint:** GET /api/v1/research/SIX/fundamental

## Navigation

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- Thesis: /stocks/SIX/thesis
- Investment Memo: /stocks/SIX/memo
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