Hedge Funds and the Prime Brokerage BookNarrow moat

Morgan Stanley (MS) — moat facet

Morgan Stanley's biggest trading profits come from lending to hedge funds, a small group of large clients that de-lever together.

Behind the equity desk's record revenues are hedge funds borrowing money and securities from Morgan Stanley. The 2025 equity record was "driven by financing revenues from higher client balances in prime brokerage"1. Firm loans, including lending to institutional clients, were $289,038 million at the end of 2025 and $315,653 million in June 202623.

Firm loans ($bn)246.82024289.02025315.7Jun 2026Morgan Stanley Form 10-K FY2025; Q2 2026 earnings release
Up 28% in eighteen months.

These clients are few compared with the wealth business, and each is large. Their balances rise and fall together with markets, and they can move to another prime broker.

The risk is concentration in positions rather than revenue. The firm says that if it holds "a concentrated position larger than those held by competitors, we may incur larger losses"4.

This is the most profitable institutional client group in the good years. Equity revenue was $6,300 million in the second quarter of 20265.

The firm's leverage ratios are the outside view of this exposure. Its Tier 1 leverage ratio was 6.0% and supplementary leverage ratio 4.9% in June 20266, and those ratios fall as prime balances grow, because every dollar lent to a fund is an asset on the firm's books.

The firm also points to the clearinghouses through which much of this business settles. It warns that greater "centralization of trading activities through particular clearinghouses" may increase its concentration of risk7. A clearinghouse failure would reach every dealer at once, which is a concentration no single firm can diversify away.

The loan book is the figure that shows client balances. Growth of 9% in the first half of 20268 says the funds were adding leverage; a quarter in which firm loans fell sharply would say they were cutting it, and equity revenue would follow.

Moat trajectory: Widening

Firm loans $289bn (2025) to $316bn (June 2026).

The number that tests this moat
Reported
Firm loans, latest quarter
$315,653M (June 2026) vs $289,038M at end-2025

Includes lending to institutional clients; a sharp fall would signal de-leveraging and lower financing revenue.

Source: Morgan Stanley Q2 2026 earnings release ↗
References
  1. ReportedThe 2025 equity record was "driven by financing revenues from higher client balances in prime brokerage".
    Morgan Stanley fourth-quarter and full-year 2025 earnings release, Form 8-K exhibit 99.1. — FY2025 · publ. 15 January 2026 · source ↗
  2. ReportedFirm loans, including lending to institutional clients, were $289,038 million at the end of 2025 and $315,653 million in June 2026.
    Morgan Stanley Form 10-K for fiscal 2025 - balance sheet, deposits, loans, goodwill and credit provisions. — FY2025 · publ. 19 February 2026 · source ↗
  3. ReportedFirm loans, including lending to institutional clients, were $289,038 million at the end of 2025 and $315,653 million in June 2026.
    Morgan Stanley second-quarter 2026 financial supplement, Form 8-K exhibit 99.2 - Wealth Management metrics, Investment Management assets under management and flows, regional revenues. — Q2 2026 · publ. 15 July 2026 · source ↗
  4. ReportedThe firm says that if it holds "a concentrated position larger than those held by competitors, we may incur larger losses".
    Morgan Stanley Form 10-K for fiscal 2025 - Item 1A risk factors, competition and legal proceedings. — FY2025 · publ. 19 February 2026 · source ↗
  5. ReportedEquity revenue was $6,300 million in the second quarter of 2026.
    Morgan Stanley second-quarter 2026 earnings release, Form 8-K exhibit 99.1 - segment results for Institutional Securities, Wealth Management and Investment Management. — Q2 2026 · publ. 15 July 2026 · source ↗
  6. ReportedIts Tier 1 leverage ratio was 6.0% and supplementary leverage ratio 4.9% in June 2026, and those ratios fall as prime balances grow, because every dollar lent to a fund is an asset on the firm's books.
    Morgan Stanley second-quarter 2026 earnings release, Form 8-K exhibit 99.1 - capital ratios, share repurchases, dividends, book value and headcount. — Q2 2026 · publ. 15 July 2026 · source ↗
  7. ReportedIt warns that greater "centralization of trading activities through particular clearinghouses" may increase its concentration of risk.
    Morgan Stanley Form 10-K for fiscal 2025 - Item 1A risk factors, competition and legal proceedings. — FY2025 · publ. 19 February 2026 · source ↗
  8. Moat Explorer calcGrowth of 9% in the first half of 2026 says the funds were adding leverage; a quarter in which firm loans fell sharply would say they were cutting it, and equity revenue would follow.
    Moat Explorer calculation from Morgan Stanley's reported figures ($ millions unless stated). Wealth Management: asset management revenue share 18,627 / 31,754 = 58.7%; net interest income share 7,911 / 31,754 = 24.9%. Client assets change 2025: 7,381 - 6,194 = 1,187 billion; net new assets 356.3 / 1,187 = 30%, so market and other changes 830.7 billion, about 70%. Fee-based share of advisor-led assets 2,347 / 4,758 = 49.3% (2024); 2,753 / 5,715 = 48.2% (2025); 3,022 / 6,273 = 48.2% (June 2026). Transactional revenue 2,473 / 4,259 - 1 = -42% (2022). Wealth Management pre-tax margins: 2015 3,332 / 15,100 = 22.1%; 2020 4,387 / 19,086 = 23.0%; 2021 6,181 / 24,243 = 25.5%; 2022 6,583 / 24,417 = 27.0%; 2023 6,530 / 26,268 = 24.9%; 2024 7,740 / 28,420 = 27.2%; 2025 9,293 / 31,754 = 29.3%. Wealth Management revenue growth (31,754 / 15,100)^(1/10) - 1 = 7.7% a year. Self-directed assets 1,667 / 1,437 - 1 = 16%; households 8.5 / 8.3 - 1 = 2.4%; daily average revenue trades 1,029 / 837 - 1 = 23% (2025) and 1,278 / 1,029 - 1 = 24% (Q2 2026); 1,278 / 759 = 1.68 since 2023. Wealth Management bank loans 181 / 146 - 1 = 24% (2022-2025). Balance sheet 2025: loans 289,038 / 246,814 - 1 = 17.1%; deposits 415,523 / 376,007 - 1 = 10.5%; borrowings 348,935 / 288,819 - 1 = 20.8%. Firm loans June 2026 315,653 / 289,038 - 1 = 9.2%; 315,653 / 246,814 - 1 = 28% since end-2024. Uninsured deposits 84,201 / 415,523 = 20.3%. Net new assets Q2 2026 excluding IPO-related inflows: just over half of 148.1 billion was IPO-related, so the rest is below 148.1 / 2 = 74.05 billion. Segments: sum of segment net revenues 2025 33,080 + 31,754 + 6,525 = 71,359, less firm net revenues 70,645 = 714 of eliminations; eliminations as reported each year 2015 213, 2016 290, 2017 290, 2018 463, 2019 467, 2020 539, 2021 541, 2022 517, 2023 555, 2024 600, 2025 714. Wealth and Investment Management share of segment revenue: 2015 (15,100 + 2,315) / 35,368 = 49.2%; 2023 (26,268 + 5,370) / 54,698 = 57.8%; 2025 (31,754 + 6,525) / 71,359 = 53.6%. Institutional Securities share of segment revenue 2025 33,080 / 71,359 = 46.4%. Share of firm pre-tax income 2025: Institutional Securities 11,237 / 21,954 = 51.2%; Wealth Management 9,293 / 21,954 = 42.3%; Investment Management 1,478 / 21,954 = 6.7%. Share of segment pre-tax income: 2021 Institutional Securities 11,814 / (11,814 + 6,181 + 1,678) = 11,814 / 19,673 = 60.1%; 2023 4,476 / 11,848 = 37.8%, Wealth and Investment Management 6,530 + 842 = 7,372 = 62.2%; 2025 Institutional Securities 11,237 / 22,008 = 51.1%, Wealth and Investment Management 10,771 / 22,008 = 48.9%; 2015 Wealth and Investment Management (3,332 + 492) / 8,495 = 45.0%. Q2 2026 Institutional Securities 4,262 / 7,348 = 58.0%; revenue 11,040 / 7,643 - 1 = 44%. Institutional Securities pre-tax margins: 2015 4,671 / 17,953 = 26.0%; 2021 11,814 / 29,833 = 39.6%; 2022 6,715 / 24,393 = 27.5%; 2023 4,476 / 23,060 = 19.4%; 2024 8,749 / 28,080 = 31.2%; 2025 11,237 / 33,080 = 34.0%; growth (33,080 / 17,953)^(1/10) - 1 = 6.3% a year. Equity 15,631 / 9,986 - 1 = 57% (2023-2025); 15,631 / 12,230 - 1 = 27.8% (2025); 15,631 / 70,645 = 22.1% of firm; 15,631 / 33,080 = 47.3% of segment. Fixed income 8,716 / 8,418 - 1 = 3.5%; 8,716 / 33,080 = 26.3% of segment. Equity underwriting 851 / 4,437 - 1 = -81% (2022). Investment Management margins: 2021 1,678 / 6,220 = 27.0%; 2023 842 / 5,370 = 15.7%; 2025 1,478 / 6,525 = 22.7%; fees 6,068 / 5,231 - 1 = 16% (2023-2025); Parametric 524 / 336 - 1 = 56%. Regions: Asia 9,420 / 6,434 - 1 = 46%; Asia 9,420 / 70,645 = 13.3% (2025); 6,434 / 54,143 = 11.9% (2023); Americas 52,897 / 70,645 = 74.9% (2025); Q2 2026 Americas 15,046 / 21,348 = 70.5%, Asia 3,930 / 21,348 = 18.4%. Capital and valuation: CET1 excess 14.8% - 11.8% = 3.0 points (June 2026). Goodwill and intangibles 16,726 + 6,010 = 22,736. Acquisitions 11.9 + 8.7 = 20.6 billion. Compensation 29,216 / 48,342 = 60.4% of non-interest expenses; 29,216 / 26,178 - 1 = 11.6%. Dividends per share 3.85 / 0.55 = 7.0 times. Payout 2025 (6,147 + 4,585) / 16,249 = 66%. Buyback price 197.64 / 85.35 = 2.3 times. Total assets 1,675,057 / 1,215,071 - 1 = 37.9% (end-2024 to June 2026); common equity 106,579 / 94,761 - 1 = 12.5%. MUFG stake 380,010,887 shares x $196.31 = about $74.6 billion. Trailing twelve months to June 2026: net revenues 70,645 - 34,531 + 41,928 = 78,042; net income 16,861 - 7,854 + 11,148 = 20,155; diluted EPS 10.21 - 4.73 + 6.90 = 12.38. P/E = market value / net income: 2023 153.05 / 9.087 = 16.8; 2024 202.54 / 13.390 = 15.1; 2025 282.15 / 16.861 = 16.7; September 2026 308.32 / 20.155 = 15.3; price to sales 308.32 / 78.042 = 3.95. Revenue growth (70,645 / 35,155)^(1/10) - 1 = 7.2% a year. Wealth Management 2025: revenue 31,754 / 28,420 - 1 = 11.7%, pre-tax income 9,293 / 7,740 - 1 = 20.1%; bank loans 181 / 160 - 1 = 13.1%, deposits 408 / 370 - 1 = 10.3%; stock plan unvested 658 / 534 - 1 = 23% (six months). Investment banking 7,619 / 10,272 - 1 = -26% (2025 vs 2021). Tangible book value per share 50.00 / 44.57 - 1 = 12.2%. Non-compensation expenses 19,126 / 17,723 - 1 = 7.9%; net revenues 70,645 / 61,761 - 1 = 14.4%. Revenue per employee 70,645 / 83,000 = about 0.85 million. Vanguard, BlackRock and State Street 6.9% + 5.7% + 7.2% = 19.8% of the stock. Diluted EPS growth (10.21 / 2.90)^(1/10) - 1 = 13.4% a year. Q2 2026 Institutional Securities share of segment revenue 11,040 / (11,040 + 8,856 + 1,646) = 11,040 / 21,542 = 51.2%. First half 2026: Institutional Securities pre-tax income 8,423 / 5,392 - 1 = 56%, share of firm pre-tax income 8,423 / 14,359 = 58.7% (H1 2025 5,392 / 10,166 = 53.0%); Wealth Management pre-tax income 5,288 / 4,151 - 1 = 27%. Q2 2026 Wealth Management revenue 8,856 / 7,764 - 1 = 14%; asset management revenue 5,261 / 4,411 - 1 = 19%; firm revenue 21,348 / 16,792 - 1 = 27%; headcount 82,944 / 80,393 - 1 = 3.2%. Investment Management pre-tax income (1,478 - 870) / 8,700 = 7.0% of the Eaton Vance price. Net income 16,861 / 6,127 - 1 = 175%; shareholders equity 111,632 / 75,182 - 1 = 48%. Self-directed plus stock plan unvested assets June 2026 1,811 + 658 = 2,469 billion. Average diluted shares 1,592 / 1,646 - 1 = -3.3%. Total client assets 9,276 / 7,860 - 1 = 18%. Market value 308.32 / 153.05 = 2.0 times (end-2023 to September 2026). 2023 charges 249 + 353 + 293 = 895. Net income 9,087 / 15,034 - 1 = -40% (2021-2023). Borrowings 348,935 / 288,819 - 1 = 21%. Loans to deposits 289,038 / 415,523 = 70%. Compensation 29,216 / 70,645 = 41% of net revenues (2025). Net new assets 2025 quarterly average 356.3 / 4 = 89.1 billion. Forecast extrapolation: 2026 revenue 41,928 x 2 = 83,856; 2026 EPS 196.31 / 15.14 = 12.97; 2027 83.9 x 1.072 = 89.9 and 12.97 x 1.072 = 13.90; 2028 96.4 and 14.90 - Wealth Management shares, margins, flows and the balance sheet. — 2015-2026 · publ. September 2026 · source ↗
    Method: Arithmetic on figures reported in Morgan Stanley's Forms 10-K and 10-Q, earnings releases and financial supplements, the 2026 proxy statement and market data; operands shown in the source line.
Sources
Generated September 26, 2026