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ZYBERNO

Stock Report

Updated Aug 31, 2026

Sixth Street Specialty Lending, Inc. (TSLX)

NYSE

$18.74

Sixth Street Specialty Lending Inc. is an American business development company (BDC) managed by Sixth Street Partners that provides financing solutions to middle market companies. The company invests primarily in first-lien secured loans to defensible middle market businesses, leveraging Sixth Street's broad credit platform and relationships.

Professional Investment Analysis

ZYBERNO SCORE →

Is it a great business? Is it getting better?

6.0/100

POOR BUSINESS

Sixth Street Specialty Lending, Inc. (TSLX) scores 6/100 — concerning metrics indicating significant structural or financial risks.

📊 How is the Zyberno Score calculated? +

The Zyberno Score answers one question: "Is this a quality business worth owning?" It's a 0-100 investment grade that evaluates business fundamentals across four critical dimensions, based on principles from Warren Buffett, Benjamin Graham, Peter Lynch, and Charlie Munger.

The 4 Core Categories (25 points each):

1. PROFITABILITY (25 pts)

Metrics: ROE, ROIC, Net Margin, Operating Margin
Thresholds: ROE >20% excellent • ROIC >20% excellent • Net Margin >20% excellent • Operating Margin >25% excellent

2. FINANCIAL STRENGTH (25 pts)

Metrics: Debt-to-Equity, Current Ratio, Interest Coverage, Altman Z-Score
Thresholds: D/E <0.3 excellent • Current Ratio >2.5 excellent • Interest Coverage >10x excellent • Altman Z >3.0 safe

3. CASH FLOW QUALITY (25 pts)

Metrics: Free Cash Flow, OCF vs Net Income, FCF Margin
Thresholds: Positive & growing FCF excellent • OCF/NI >1.2x excellent (cash earnings exceed accounting)

4. GROWTH & CONSISTENCY (25 pts)

Metrics: Revenue Growth, Net Income Growth, FCF Growth, Piotroski F-Score
Thresholds: Growth via log-linear regression • Piotroski 8-9 excellent, 6-7 good

Score Interpretation:

75-100

GREAT BUSINESS

65-74

GOOD BUSINESS

50-64

AVERAGE BUSINESS

30-49

WEAK BUSINESS

0-29

POOR BUSINESS

→ View full TSLX quality analysis & detailed breakdown

VALUATION SIGNAL

MARGIN OF SAFETY

Is this stock cheap or expensive relative to what the business has historically generated for owners?

Margin of Safety unavailable — insufficient data for the owner-earnings DCF.

BRINA GAP ↗

Is the market underestimating or overestimating what this business is capable of going forward?

-5.2%

Slight Overestimate

💰 How is Margin of Safety calculated? +

Margin of Safety measures how much discount or premium you're paying relative to a stock's intrinsic value. It's Benjamin Graham's core principle: the larger the margin, the lower your downside risk.

Formula: (Intrinsic Value − Current Price) ÷ Intrinsic Value × 100%

How We Calculate Intrinsic Value (DCF Method):

Step 1: Calculate current Owner Earnings (OCF − Maintenance CapEx)

Step 2: Calculate company-specific growth rate using log-linear regression on 16 quarters of Owner Earnings

Step 3: Project 10 years forward using the calculated growth rate

Step 4: Discount each year's cash flow to present value using 10% discount rate

Step 5: Calculate terminal value using 3% perpetual growth rate

Step 6: Sum all discounted cash flows = Intrinsic Value

What The Percentages Mean:

+50% or more

EXCELLENT — Very undervalued

+25% to +50%

GOOD — Attractive discount

0% to +25%

FAIR — Reasonable value

0% to -25%

CAUTION — Slight premium

-25% or worse

POOR — Overvalued

"Price is what you pay, value is what you get." — Warren Buffett

→ View full TSLX valuation analysis · → View full TSLX Brina Gap analysis

📈 How is Brina Gap calculated? +

Brina Gap measures the difference between the growth a business can fundamentally sustain and the growth the market is already pricing in.

Formula: Fundamental Growth Rate − Market-Implied Growth Rate

The Two Components:

Fundamental Growth Rate = ROIC × Reinvestment Rate

What the business can sustainably grow at based on how much it reinvests and what return it earns on that capital. Grounded in historical financials.

Market-Implied Growth Rate = Reverse DCF

The growth rate the current Enterprise Value implicitly assumes. Calculated by back-solving a 10-year DCF model (10% WACC, 3% terminal growth) until the present value of projected cash flows equals EV.

What The Gap Means:

Gap > +5% Market Underestimates — potential upside

+2% to +5% Slight Underestimate

-2% to +2% Fairly Priced — market consensus matches fundamentals

-5% to -2% Slight Overestimate

Gap < -5% Market Overestimates — price embeds optimism fundamentals don't support

A positive gap (market underestimates) combined with a positive Margin of Safety is the strongest combined signal — the business is both cheap historically and forward economics are stronger than the price suggests.

Critical Financial Health Indicators

Return on Equity (Profitability):POOR (5.6%)

Debt-to-Equity (Solvency Risk):POOR (1.27x)

Operating Margin (Operational Efficiency):CRITICAL (0.0%)

Return on Capital (Capital Efficiency):POOR (6.3%)

📊 Valuation Trilogy

Three interconnected metrics for complete valuation analysis

Click any metric for full methodology and detailed analysis

Zyberno's Verdict

Sixth Street Specialty Lending, Inc. (TSLX) stock report — Zyberno Score 6/100 (POOR BUSINESS). Full financial analysis on Zyberno.

According to Zyberno's DCF model, Sixth Street Specialty Lending, Inc. (TSLX) shows a Brina Gap of -5.2%, which weakens the case: based on the company's ROIC (6.3%) and reinvestment rate (0.0%), the business can fundamentally grow at 0.0% — but the current enterprise value implies the market expects 5.2%.

DIVISION I: EXECUTIVE SUMMARY

A. Market Valuation

Market Price & Capitalization (2)

Current Price:18.74

Market Cap:$1.78B

Valuation Multiples (3)

P/E Ratio:

19.73x

📊 Click to view full TSLX P/E analysis →

P/B Ratio:1.15x

Peg Ratio:-999.00x

Enterprise Metrics (2)

Enterprise Value:$3.51B

Ev Ebitda Ratio:15.68x

Price Action & Momentum (3)

12-1 Momentum:

-22.4% (22th pctile)

📈 Click to view full TSLX Momentum analysis →

Momentum Percentile:22 / 100

% of 52-Week High:75.6%

B. Profitability Assessment

Return Metrics (7)

ROE:

5.6%

📊 Click to view full TSLX ROE analysis →

ROA:2.6%

Roic:

6.3%

📊 Click to view full TSLX ROIC analysis →

Reinvestment Rate:0.0%

Fundamental Growth Rate (g):0.0%

Market-Implied Growth Rate:5.2%

Brina Gap:

-5.2%

☷ Click to view full TSLX Brina Gap analysis →

Margin Analysis (1)

Ebitda Margin:0.0%

Yield Metrics (2)

Earnings Yield:$5.07

Dividend Yield:9.3%

C. Log-Linear Regression Growth Trends

Earnings Surprise (SUE) (3)

Earnings Surprise (SUE):

-0.18

📊 Click to view full TSLX Earnings Surprise analysis →

EPS Surprise vs Expected:-8.1%

Latest Earnings Filed:2026-08-04

Earnings Growth (Linear) (1)

Net Income Growth Rate (Linear):-11.8%

Cash Flow Growth (Linear) (1)

Operating Cash Flow Growth Rate (Linear):50.1%

Operating Growth (Linear) (1)

Operating Income Growth Rate (Linear):20.0%

D. Financial Stability

Liquidity Ratios (3)

Current Ratio:0.10x

Quick Ratio:0.10x

Cash Ratio:0.10x

Leverage Analysis (3)

Debt To Equity Ttm:1.27x

Debt-to-Equity Ratio:1.27x

Debt To Ebitda:8.60x

Coverage Ratios (2)

Interest Coverage Ratio:2.33x

Times Interest Earned:2.33

Capital Structure (4)

Working Capital:-1,801,082,000.00

Cash And Cash Equivalents:193,555,000.00

Long Term Debt:$1.92B

Net Debt:$1.73B

DIVISION II: FINANCIAL STATEMENTS ANALYSIS

A. Income Statement Analysis

Revenue Components (2)

$0.00

Cost Of Revenue Ttm:$0.00

Profitability Breakdown (2)

$0.00

Operating income TTM: $223.96M

Linear Growth: 20.0%

📊 Click to view full TSLX Operating Income analysis & methodology →

Bottom Line Performance (3)

Net income TTM: $89.04M

Linear Growth: -11.8%

📊 Click to view full TSLX Net Income analysis & methodology →

Income Before Tax:$223.96M

Ebitda Ttm:223,961,000.00

Operating Expenses (5)

Operating Expenses:260,031,000.00

R And D Expense:0.00

Sga Expense:0.00

Income Tax Expense:$5.88M

Interest Expense:96,131,000.00

Expense Ratios (1)

Ebitda Margin:0.0%

B. Balance Sheet Analysis

Asset Composition (5)

Total Assets:$3.54B

Current Assets:$193.56M

Ppe Net:0.00

Goodwill:0.00

Intangible Assets:$0.00

Liability Structure (4)

Total Liabilities:1,994,637,000.00

Current Liabilities:1,994,637,000.00

Long Term Debt:$1.92B

Short Term Debt:$0.00

Equity & Capital (3)

Equity:$1.55B

Retained Earnings:$11.71M

Common Stock:400,000,000.00

Working Capital Items (3)

Accounts Receivable:0.00

Inventory:0.00

Accounts Payable:0.00

Special Items (2)

Contract Liabilities:0.00

Stock Based Compensation:0.00

C. Cash Flow Analysis

Operating Activities (2)

Operating cash flow TTM: $228.30M

Linear Growth: 50.1%

$0.00

Investment Activities (1)

Investing Cash Flow:$0.00

Financing Activities (3)

Financing Cash Flow:$32.87M

Dividends Paid Ttm:166,148,000.00

Stock Repurchase:6,168,000.00

Capital Transactions (3)

Common Stock Issuance:0.00

Long Term Debt Issuance:$0.00

Long Term Debt Repayments:$0.00

DIVISION III: OPERATIONAL METRICS

A. Per Share Analysis

Earnings Per Share (3)

EPS (Basic TTM):0.95

Eps diluted TTM: $0.95

Linear Growth: -13.1%

📊 Click to view full TSLX EPS analysis & methodology →

Earnings Per Share Ttm:$0.94

Revenue & Cash Per Share (1)

Operating Cash Flow Per Share:$4.23

Book Value & Capital (2)

Book Value Per Share:$16.30

Cash Per Share:2.04

Dividend Policy (1)

Dividend Payout Ratio:191.29x

B. Operational Efficiency

Asset Utilization (1)

Working Capital Turnover Ttm:-999.00x

Receivables Management (2)

Receivables Turnover Ttm:-999.00x

Days Sales Outstanding Ttm:-999.00

Inventory Management (2)

Inventory Turnover Ttm:-999.00x

Days Inventory Outstanding Ttm:-999.00

Payables & Cash Cycle (2)

Days Payable Outstanding:-999.00

Cash Conversion Cycle:-999.00

C. Quality & Risk Metrics

Financial Quality Scores (2)

Financial Strength Score:0.00

Quality Score:40.00

Market Metrics (2)

Beta:0.00x

Volatility Category:unknown

DIVISION IV: INVESTMENT ANALYSIS

A. Value Investment Framework

Damodaran Growth Analysis (4)

Reinvestment Rate:0.0%

Fundamental Growth Rate (g):0.0%

Market-Implied Growth Rate:5.2%

Brina Gap:

-5.2%

☷ Click to view full TSLX Brina Gap analysis →

B. Log-Linear Regression Growth Analysis

Growth Rates (Log-Linear Regression) (2)

Net Income Growth Rate (Linear):-11.8%

Operating Income Growth Rate (Linear):20.0%

Cash Flow Growth Rates (1)

Operating Cash Flow Growth Rate (Linear):50.1%

Other Growth Rates (1)

Book Value Growth Rate (Linear):4.3%

C. Company Profile & Context

Corporate Information (6)

Symbol:TSLX

Company Name:Sixth Street Specialty Lending, Inc.

Sector:Unknown

Industry:Unknown

Exchange:NYSE

Country:United States

Market Classification (3)

Market Cap Category:N/A

Price Category:medium

Volume Category:N/A

Share Structure (3)

Shares Outstanding:95.02M

Shares Outstanding Basic:95.02M

Shares Outstanding Diluted:95.02M

Data Processing Info (3)

Processing Version:v3.0

Last Updated:2026-08-31 13:19:08 UTC

Data Timestamp:2026-08-31T13:19:08.303182