Sixth Street Specialty Lending

TSLXNYSEUSD

THESIS ALERT

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$17.64
−$0.11 (−0.62%)Today 1M +2.31%
After hours$17.640.00%

Updated Nov 11, 4:00 PM ET · Regular session · May be delayed

Source valuation snapshot. Not a live recalculation.
Latest filed annual earnings; price snapshot date unavailable. Not forward P/E.
Diluted earnings per share from the latest filed annual.
$17.75
Prior regular-session close from the quote source.
$17.45–$17.80
Regular-session low and high so far today.
428.2K
Regular-session shares traded · Nov 11, 4:00 PM ET.
Feb 11 projected
Projected for 2027-02-11 from the company’s own results filings (SEC 8-K Item 2.02). The company has not confirmed the date.
$16.04–$22.84
52-week trading low and high returned by the quote source.

Understand the Business

Why the Stock Moved

Period-matched expectations history is not yet available. Current metrics are not a substitute for a historical explanation.

The core investment thesis

Own TSLX if TSLX earns cash returns by originating and structuring floating-rate, secured middle‑market loans using Sixth Street's origination platform and variable-rate leverage; its value depends on maintaining deal flow, spread over funding, and credit performance.

TSLX price history

Latest price$17.64Today−$0.11 (-0.62%)
TSLX +2.08%S&P 500 -2.42%Since first plotted close
4 hours

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Investment thesis

What must happen next

5 MATERIAL PROPOSITIONS
  • Because the portfolio is concentrated in secured, floating‑rate middle‑market loans (with covenants and structural protections), TSLX can generate durable net income so long as credit performance remains stable.StrengtheningMateriality: High

    Net income remained positive across 2023–2025 (NetIncomeLoss: 2023 $222,023,000. If true, shareholders get predictable current income and NAV stability; if false, credit losses will drag net income and force dividend cuts or NAV write‑downs.

    Watch: A broad middle‑market recession that causes higher defaults among portfolio borrowers (leading indicator: rising non‑accruals or charge‑offs).

    Supporting sources

    Source notes are factual paraphrases; read the original disclosures below.

    Net income remained positive across 2023–2025 (NetIncomeLoss: 2023 $222,023,000.

    Open source ↗
  • TSLX’s ability to convert portfolio yields into distributable cash depends on continued access to variable‑rate leverage (revolving credit) while preserving positive spread; therefore operating cash flow is the signal of successful leverage economics.StrengtheningMateriality: High

    Operating cash flow swung positive in 2025 (NetCashProvidedByUsedInOperatingActivities: 2025 $401,577,000) after prior years of negative cash flow (2024 -$45,491,000. Sustained positive operating cash flow underwrites dividend payments and shows leverage is accretive; loss of that access or spread compression forces slower asset growth or dividend reductions.

    Watch: A loss or non‑renewal of the revolving credit facility, or covenant amendments that tighten capacity.

    Supporting sources

    Source notes are factual paraphrases; read the original disclosures below.

    Operating cash flow swung positive in 2025 (NetCashProvidedByUsedInOperatingActivities: 2025 $401,577,000) after prior years of negative cash flow (2024 -$45,491,000.

    Open source ↗
  • The Adviser’s origination and structuring capability (access to last‑out, unitranche and middle‑market deals) is the primary competitive advantage; if allocation of those deals to TSLX is maintained, revenue and asset growth follow, but diversion to affiliate funds will reduce future.HoldingMateriality: Medium

    MD&A: the Adviser and Sixth Street supply origination, analytical capabilities and support personnel. Adviser access determines the quantity and quality of new originations and thus future revenue and NAV growth; diversion would be a leading sign of weaker future earnings and asset growth.

    Watch: Formation or growth of affiliated funds (e.g., Sixth Street vehicles targeted at Europe or other markets) that are explicitly allocated overlapping opportunities and reduce allocations to TSLX.

    Supporting sources

    Source notes are factual paraphrases; read the original disclosures below.

    MD&A: the Adviser and Sixth Street supply origination, analytical capabilities and support personnel.

    Open source ↗
  • Material credit deterioration or mark‑to‑market declines on second‑lien, mezzanine or equity positions will reduce book equity and earnings quickly because these instruments are more loss‑sensitive than secured first‑lien loans.HoldingMateriality: Medium

    Investments fair value fell from $3,518.4M (12/31/2024) to $3,347.3M (12/31/2025) with only a $24.0M net unrealized gain at 12/31/2025, showing fair value volatility in the portfolio. NAV (book equity) is a leading measure of capital preservation for a BDC; persistent equity declines would compress per‑share value and likely force dividends lower.

    Watch: A recession or industry‑specific shock that forces widespread downgrades and increased unrealized losses in mezzanine/second‑lien positions.

    Supporting sources

    Source notes are factual paraphrases; read the original disclosures below.

    Investments fair value fell from $3,518.4M (12/31/2024) to $3,347.3M (12/31/2025) with only a $24.0M net unrealized gain at 12/31/2025, showing.

    Open source ↗
  • Because most investments and the Revolving Credit Facility are tied to floating rates (SOFR, EURIBOR, etc.), benchmark rate moves and spread compression will show up quickly in EPS; falling portfolio yields or higher funding costs will reduce eps_diluted.StrengtheningMateriality: Medium

    EPS diluted declined 2023→2025 (EarningsPerShareDiluted: 2023 $2.61. EPS is a compact signal of whether the firm is keeping spread over funding; sustained EPS declines imply dividend risk or capital impairment.

    Watch: A rapid decline in benchmark rates that reduces portfolio yields faster than funding costs adjust (or vice versa), compressing net interest margin.

    Supporting sources

    Source notes are factual paraphrases; read the original disclosures below.

    EPS diluted declined 2023→2025 (EarningsPerShareDiluted: 2023 $2.61.

    Open source ↗
Full investment case & evidence

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Original research

Because the portfolio is concentrated in secured, floating‑rate middle‑market loans (with covenants and structural protections), TSLX can generate durable net income so long as credit performance remains stable. If true, shareholders get predictable current income and NAV stability; if false, credit losses will drag net income and force dividend cuts or NAV write‑downs.

TSLX’s ability to convert portfolio yields into distributable cash depends on continued access to variable‑rate leverage (revolving credit) while preserving positive spread; therefore operating cash flow is the signal of successful leverage economics. Sustained positive operating cash flow underwrites dividend payments and shows leverage is accretive; loss of that access or spread compression forces slower asset growth or dividend reductions.

The Adviser’s origination and structuring capability (access to last‑out, unitranche and middle‑market deals) is the primary competitive advantage; if allocation of those deals to TSLX is maintained, revenue and asset growth follow, but diversion to affiliate funds will reduce future. Adviser access determines the quantity and quality of new originations and thus future revenue and NAV growth; diversion would be a leading sign of weaker future earnings and asset growth.

Material credit deterioration or mark‑to‑market declines on second‑lien, mezzanine or equity positions will reduce book equity and earnings quickly because these instruments are more loss‑sensitive than secured first‑lien loans. NAV (book equity) is a leading measure of capital preservation for a BDC; persistent equity declines would compress per‑share value and likely force dividends lower.

Because most investments and the Revolving Credit Facility are tied to floating rates (SOFR, EURIBOR, etc.), benchmark rate moves and spread compression will show up quickly in EPS; falling portfolio yields or higher funding costs will reduce eps_diluted. EPS is a compact signal of whether the firm is keeping spread over funding; sustained EPS declines imply dividend risk or capital impairment.

All standing thesis claims
Original report summary

TSLX earns cash returns by originating and structuring floating-rate, secured middle‑market loans using Sixth Street's origination platform and variable-rate leverage; its value depends on maintaining deal flow, spread over funding, and credit performance.

Evidence assessed Nov 9, 2026. Expand each conclusion for its evidence and what would change it. Thesis evidence—not a buy or sell recommendation.

Bull case and bear case

Bull case and bear case for Sixth Street Specialty Lending

Where the evidence on Sixth Street Specialty Lending stands: Holding on the latest evidence (Nov 9, 2026). Of its 5 thesis points, 3 strengthening and 2 holding.

Bull case: what the evidence supports

  • Because the portfolio is concentrated in secured, floating‑rate middle‑market loans (with covenants and structural protections), TSLX can generate durable net income so long as credit performance remains stable.

    sec.gov ↗

  • TSLX’s ability to convert portfolio yields into distributable cash depends on continued access to variable‑rate leverage (revolving credit) while preserving positive spread; therefore operating cash flow is the signal of successful leverage economics.

    sec.gov ↗

  • The Adviser’s origination and structuring capability (access to last‑out, unitranche and middle‑market deals) is the primary competitive advantage; if allocation of those deals to TSLX is maintained, revenue and asset growth follow, but diversion to affiliate funds will reduce future.

    sec.gov ↗

  • Material credit deterioration or mark‑to‑market declines on second‑lien, mezzanine or equity positions will reduce book equity and earnings quickly because these instruments are more loss‑sensitive than secured first‑lien loans.

    sec.gov ↗

  • Because most investments and the Revolving Credit Facility are tied to floating rates (SOFR, EURIBOR, etc.), benchmark rate moves and spread compression will show up quickly in EPS; falling portfolio yields or higher funding costs will reduce eps_diluted.

    sec.gov ↗

Bear case: what would count against it

  • A broad middle‑market recession that causes higher defaults among portfolio borrowers (leading indicator: rising non‑accruals or charge‑offs).

    sec.gov ↗

  • A loss or non‑renewal of the revolving credit facility, or covenant amendments that tighten capacity.

    sec.gov ↗

  • Formation or growth of affiliated funds (e.g., Sixth Street vehicles targeted at Europe or other markets) that are explicitly allocated overlapping opportunities and reduce allocations to TSLX.

    sec.gov ↗

Thesis-Break Engine

Thesis-break watch · Sixth Street Specialty Lending

OptimistFi is watching Sixth Street Specialty Lending. No break-condition checks are on record yet — they accumulate as new filings are checked.

How the Thesis-Break Engine works →Historical outcomes are measured against the market after past breaks of the same kind, across all companies. Not a prediction.

MARKET + FINANCIAL SNAPSHOT

The numbers behind the thesis

Sourced from filings and market data

What Changed

  1. Mixed
    Reported results of operations (earnings release).

    Sixth Street Specialty Lending filed an SEC 8-K on 2026-11-03: Reported results of operations (earnings release). It is a dated development that tests the current thesis.

  2. Mixed
    Reported results of operations (earnings release).

    Sixth Street Specialty Lending filed an SEC 8-K on 2026-08-04: Reported results of operations (earnings release). It is a dated development that tests the current thesis.

  3. Mixed
    Entered a material definitive agreement.

    Sixth Street Specialty Lending filed an SEC 8-K on 2026-05-14: Entered a material definitive agreement. It is a dated development that tests the current thesis.

Risks / falsifiers

What could break the thesis

  • A broad middle‑market recession that causes higher defaults among portfolio borrowers (leading indicator: rising non‑accruals or charge‑offs).
  • A loss or non‑renewal of the revolving credit facility, or covenant amendments that tighten capacity.
  • Formation or growth of affiliated funds (e.g., Sixth Street vehicles targeted at Europe or other markets) that are explicitly allocated overlapping opportunities and reduce allocations to TSLX.
  • A recession or industry‑specific shock that forces widespread downgrades and increased unrealized losses in mezzanine/second‑lien positions.
  • A rapid decline in benchmark rates that reduces portfolio yields faster than funding costs adjust (or vice versa), compressing net interest margin.

TSLX news

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Financial statements

TSLX income statement

Annual filed results · USD · Oldest to newest. Margins are calculated from the reported figures.

TSLX: quick answers

When does Sixth Street Specialty Lending (TSLX) report earnings next?
Sixth Street Specialty Lending's next results are projected for February 11, 2027, from the dates of its own results filings with the SEC. The company has not confirmed the date. It last reported on November 3, 2026. Earnings calendar
What is TSLX's short interest?
As of October 30, 2026, 3.7M TSLX shares were sold short, down 3.9% from the count before. At the stock's average daily volume that is 7.2 days to cover. FINRA publishes the count twice a month. TSLX short interest history
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