v3.26.1
N-2 - $ / shares
6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
Dec. 31, 2024
Cover [Abstract]        
Entity Central Index Key 0001885968      
Amendment Flag false      
Securities Act File Number 814-01453      
Document Type 10-Q      
Entity Registrant Name T Series BDC LLC      
Entity Address, Address Line One 1585 Broadway      
Entity Address, City or Town New York      
Entity Address, State or Province NY      
Entity Address, Postal Zip Code 10036      
City Area Code 212      
Local Phone Number 761-4000      
Entity Emerging Growth Company true      
Entity Ex Transition Period true      
General Description of Registrant [Abstract]        
Investment Objectives and Practices [Text Block]

The Company’s investment objective is to achieve attractive risk-adjusted returns via current income and, to a lesser extent, capital appreciation by investing primarily in directly originated senior secured term loans issued by U.S. middle-market companies backed by private equity sponsors, including first lien senior secured term loans, second lien senior secured term loans, with the balance of its investments expected to be in higher-yielding assets such as mezzanine debt, unsecured debt, equity investments and other opportunistic asset purchases.

     
Risk Factors [Table Text Block]

We are subject to financial market risks, including valuation risk, market risk and interest rate risk.

Valuation Risk

We have invested, and plan to continue to invest, primarily in illiquid debt and equity securities of portfolio companies. During periods of market dislocation, we will seek to invest prudently in the secondary loan market to provide our investors better risk adjusted returns while adhering to our core investment tenets. Most of our investments will not have a readily available market price. To ensure accurate valuations, our investments are valued at fair value in good faith by the Company’s Board of Directors, based on the input of the Investment Adviser, including our Valuation Designee, our Audit Committee and independent third-party valuation firms engaged at the direction of the Board of Directors, or Valuation Designee, and in accordance with our valuation policy. There is no single standard for determining fair value. As a result, determining fair value requires that judgment be applied to the specific facts and circumstances of each investment while employing a consistently applied valuation process for the investments we hold. If we were required to liquidate a portfolio investment in a forced or liquidation sale, we may realize amounts that are different from the amounts presented, and such differences could be material.

Market Risk

The market value of a security may move up or down, sometimes rapidly and unpredictably. These fluctuations may cause a security to be worth less than the price originally paid for it or less than it was worth at an earlier time. Market risk may affect a single issuer, industry, sector of the economy or the market as a whole. Global economies and financial markets are increasingly interconnected, which increases the probabilities that conditions in one country or region might adversely impact issuers in a different country or region. Conditions affecting the general economy, including political, social, or economic instability at the local, regional, or global level, may also affect the market value of a security. Health crises, such as pandemic and epidemic diseases, as well as other incidents that interrupt the expected course of events, such as natural disasters, war or civil disturbance, acts of terrorism, international conflicts, trade policies and tariffs, government shutdowns, power outages and other unforeseeable and external events, and the public response to or fear of such diseases or events, have and may in the future have an adverse effect on a company’s investments and net asset value and can lead to increased market volatility. See “Part I, Item 1A. Risk Factors—General Risk Factors—We are operating in a period of capital markets volatility and economic uncertainty. These market conditions, when they occur, have materially and adversely affected debt and equity capital markets in the United States, and any future volatility or instability in capital markets may have a negative impact on our business and operations.” and “Part I, Item 1A. Risk Factors—General Risk Factors—Terrorist attacks, acts of war, natural disasters, outbreaks or pandemics, may impact our portfolio companies and our Adviser and harm our business, operating results and financial condition” of our most recent Annual Report on Form 10-K.

Interest Rate Risk

We are subject to financial market risks, and most significantly, changes in interest rates. Interest rate sensitivity refers to the change in our earnings that may result from changes in the level of interest rates. Because we expect to fund a portion of our investments with borrowings, our net investment income is expected to be affected by the difference between the rate at which we invest and the rate at which we borrow. As a result, we can offer no assurance that a significant change in market interest rates will not have a material adverse effect on our net investment income.

As of June 30, 2026, approximately 99.7 % of our debt investments bore floating interest rates. Based on our Consolidated Statements of Financial Condition as of June 30, 2026, the following table shows the annualized impact on net income of hypothetical reference rate changes in interest rates (considering interest rate floors and ceilings for floating rate debt instruments, assuming no changes in our investments and borrowing structure as of June 30, 2026) (dollar amounts in thousands):

 

 

Interest

 

 

Interest

 

 

Net

 

Basis Point Change - Interest Rates

Income

 

 

Expense

 

 

Income

 

Up 300 basis points

$

66,648

 

 

$

(32,760

)

 

$

33,888

 

Up 200 basis points

$

44,432

 

 

$

(21,840

)

 

$

22,592

 

Up 100 basis points

$

22,216

 

 

$

(10,920

)

 

$

11,296

 

Up 25 basis points

$

5,554

 

 

$

(2,730

)

 

$

2,824

 

Down 25 basis points

$

(5,554

)

 

$

2,730

 

 

$

(2,824

)

Down 100 basis points

$

(22,216

)

 

$

10,920

 

 

$

(11,296

)

Down 200 basis points

$

(44,427

)

 

$

21,840

 

 

$

(22,587

)

Down 300 basis points

$

(64,277

)

 

$

32,760

 

 

$

(31,517

)

 

We may hedge against interest rate fluctuations by using standard hedging instruments such as futures, options and forward contracts or our credit facilities, subject to the requirements of the 1940 Act and applicable commodities laws. While hedging activities may insulate us against adverse changes in interest rates, they may also limit our ability to participate in benefits of lower interest rates or higher exchange rates with respect to our portfolio of investments with fixed interest rates or investments denominated in foreign currencies. During the periods covered by this Report, we did not engage in interest rate hedging activities.

     
NAV Per Share $ 17.63 $ 18.24 $ 18.61 $ 18.94
Valuation Risk [Member]        
General Description of Registrant [Abstract]        
Risk [Text Block]

Valuation Risk

We have invested, and plan to continue to invest, primarily in illiquid debt and equity securities of portfolio companies. During periods of market dislocation, we will seek to invest prudently in the secondary loan market to provide our investors better risk adjusted returns while adhering to our core investment tenets. Most of our investments will not have a readily available market price. To ensure accurate valuations, our investments are valued at fair value in good faith by the Company’s Board of Directors, based on the input of the Investment Adviser, including our Valuation Designee, our Audit Committee and independent third-party valuation firms engaged at the direction of the Board of Directors, or Valuation Designee, and in accordance with our valuation policy. There is no single standard for determining fair value. As a result, determining fair value requires that judgment be applied to the specific facts and circumstances of each investment while employing a consistently applied valuation process for the investments we hold. If we were required to liquidate a portfolio investment in a forced or liquidation sale, we may realize amounts that are different from the amounts presented, and such differences could be material.

     
Market Risk [Member]        
General Description of Registrant [Abstract]        
Risk [Text Block]

Market Risk

The market value of a security may move up or down, sometimes rapidly and unpredictably. These fluctuations may cause a security to be worth less than the price originally paid for it or less than it was worth at an earlier time. Market risk may affect a single issuer, industry, sector of the economy or the market as a whole. Global economies and financial markets are increasingly interconnected, which increases the probabilities that conditions in one country or region might adversely impact issuers in a different country or region. Conditions affecting the general economy, including political, social, or economic instability at the local, regional, or global level, may also affect the market value of a security. Health crises, such as pandemic and epidemic diseases, as well as other incidents that interrupt the expected course of events, such as natural disasters, war or civil disturbance, acts of terrorism, international conflicts, trade policies and tariffs, government shutdowns, power outages and other unforeseeable and external events, and the public response to or fear of such diseases or events, have and may in the future have an adverse effect on a company’s investments and net asset value and can lead to increased market volatility. See “Part I, Item 1A. Risk Factors—General Risk Factors—We are operating in a period of capital markets volatility and economic uncertainty. These market conditions, when they occur, have materially and adversely affected debt and equity capital markets in the United States, and any future volatility or instability in capital markets may have a negative impact on our business and operations.” and “Part I, Item 1A. Risk Factors—General Risk Factors—Terrorist attacks, acts of war, natural disasters, outbreaks or pandemics, may impact our portfolio companies and our Adviser and harm our business, operating results and financial condition” of our most recent Annual Report on Form 10-K.

     
Interest Rate Risk [Member]        
General Description of Registrant [Abstract]        
Risk [Text Block]

Interest Rate Risk

We are subject to financial market risks, and most significantly, changes in interest rates. Interest rate sensitivity refers to the change in our earnings that may result from changes in the level of interest rates. Because we expect to fund a portion of our investments with borrowings, our net investment income is expected to be affected by the difference between the rate at which we invest and the rate at which we borrow. As a result, we can offer no assurance that a significant change in market interest rates will not have a material adverse effect on our net investment income.

As of June 30, 2026, approximately 99.7 % of our debt investments bore floating interest rates. Based on our Consolidated Statements of Financial Condition as of June 30, 2026, the following table shows the annualized impact on net income of hypothetical reference rate changes in interest rates (considering interest rate floors and ceilings for floating rate debt instruments, assuming no changes in our investments and borrowing structure as of June 30, 2026) (dollar amounts in thousands):

 

 

Interest

 

 

Interest

 

 

Net

 

Basis Point Change - Interest Rates

Income

 

 

Expense

 

 

Income

 

Up 300 basis points

$

66,648

 

 

$

(32,760

)

 

$

33,888

 

Up 200 basis points

$

44,432

 

 

$

(21,840

)

 

$

22,592

 

Up 100 basis points

$

22,216

 

 

$

(10,920

)

 

$

11,296

 

Up 25 basis points

$

5,554

 

 

$

(2,730

)

 

$

2,824

 

Down 25 basis points

$

(5,554

)

 

$

2,730

 

 

$

(2,824

)

Down 100 basis points

$

(22,216

)

 

$

10,920

 

 

$

(11,296

)

Down 200 basis points

$

(44,427

)

 

$

21,840

 

 

$

(22,587

)

Down 300 basis points

$

(64,277

)

 

$

32,760

 

 

$

(31,517

)

 

We may hedge against interest rate fluctuations by using standard hedging instruments such as futures, options and forward contracts or our credit facilities, subject to the requirements of the 1940 Act and applicable commodities laws. While hedging activities may insulate us against adverse changes in interest rates, they may also limit our ability to participate in benefits of lower interest rates or higher exchange rates with respect to our portfolio of investments with fixed interest rates or investments denominated in foreign currencies. During the periods covered by this Report, we did not engage in interest rate hedging activities.