TSLX vs BX vs KKR vs ARCC

For growth investors, Ares Capital Corporation (ARCC) is the stronger pick with 32.

9% revenue growth year-over-year, versus -11. 0% for KKR & Co. Inc. (KKR). Sixth Street Specialty Lending, Inc. (TSLX) offers the better valuation at 9. 9x trailing P/E (9. 1x forward), making it the more compelling value choice. Analysts rate Sixth Street Specialty Lending, Inc. (TSLX) a "Buy" — based on 17 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, Sixth Street Specialty Lending, Inc.

(TSLX) is the cheapest at 9. 9x versus KKR & Co. Inc. at 42. 9x. On forward P/E, Sixth Street Specialty Lending, Inc. is actually cheaper at 9. 1x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Ares Capital Corporation wins at 0. 96x versus Blackstone Inc. 's 0. 98x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, KKR & Co.

Inc. (KKR) delivered a total return of +76. 5%, compared to +28. 7% for Sixth Street Specialty Lending, Inc. (TSLX). Over 10 years, the gap is even starker: KKR returned +715. 5% versus ARCC's +139. 2%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), Sixth Street Specialty Lending, Inc.

(TSLX) is the lower-risk stock at 0. 63β versus KKR & Co. Inc. 's 1. 70β — meaning KKR is approximately 172% more volatile than TSLX relative to the S&P 500. On balance sheet safety, Blackstone Inc. (BX) carries a lower debt/equity ratio of 61% versus 112% for Ares Capital Corporation — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Ares Capital Corporation (ARCC) is pulling ahead at 32.

9% versus -11. 0% for KKR & Co. Inc. (KKR). On earnings-per-share growth, the picture is similar: Blackstone Inc. grew EPS 7. 2% year-over-year, compared to -28. 7% for KKR & Co. Inc.. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Sixth Street Specialty Lending, Inc.

(TSLX) is the more profitable company, earning 47. 3% net margin versus 12. 3% for KKR & Co. Inc. — meaning it keeps 47. 3% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ARCC leads at 69. 7% versus 2. 4% for KKR. At the gross margin level — before operating expenses — BX leads at 86. 0%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, Ares Capital Corporation (ARCC) is the more undervalued stock at a PEG of 0. 96x versus Blackstone Inc. 's 0. 98x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Sixth Street Specialty Lending, Inc. (TSLX) trades at 9. 1x forward P/E versus 20. 5x for Blackstone Inc. — 11. 4x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for KKR: 42. 5% to $143. 00.

All stocks in this comparison pay dividends.

Sixth Street Specialty Lending, Inc. (TSLX) offers the highest yield at 10. 1%, versus 0. 8% for KKR & Co. Inc. (KKR).

For long-horizon retirement investors, Sixth Street Specialty Lending, Inc.

(TSLX) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 63), 10. 1% yield, +142. 2% 10Y return). Blackstone Inc. (BX) carries a higher beta of 1. 53 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (TSLX: +142. 2%, BX: +476. 1%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

Both stocks operate in the Financial Services sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: TSLX is a small-cap deep-value stock; BX is a mid-cap high-growth stock; KKR is a mid-cap quality compounder stock; ARCC is a mid-cap high-growth stock. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.