Five J.P. Morgan entities and Highbridge Capital Management LLC filed a joint large shareholding report with Japan's Kanto Local Finance Bureau on August 19, 2026, disclosing a combined 5.08% stake in Nippon Steel Corporation (TSE: 5401), listed in Tokyo, Nagoya, Fukuoka and Sapporo. The reporting obligation was triggered on August 14, 2026, the date the six filers' aggregate holding crossed the threshold that Japan's Financial Instruments and Exchange Act sets for mandatory disclosure.
The combined position comes to 280,712,868 shares and share-equivalents, measured against 5,373,633,760 shares outstanding plus 153,836,169 shares of potential dilution from convertible bonds and a call option held across the six filers.
| Entity | Stake | Shares held | Stated purpose |
|---|---|---|---|
| J.P. Morgan Securities plc | 1.96% | 108,124,338 | Securities business holdings |
| J.P. Morgan Securities LLC | 1.75% | 96,558,246 | Securities business holdings |
| Highbridge Capital Management LLC | 0.87% | 48,274,088 | Client asset management (pure investment) |
| J.P. Morgan Investment Management Inc. | 0.38% | 20,980,070 | Client asset management (pure investment) |
| J.P. Morgan SE | 0.12% | 6,675,070 | Client asset management and transactions |
| Tokyo-based co-filer | 0.00% | 101,056 | Securities business holdings |
| Combined total | 5.08% | 280,712,868 | - |
The breakdown matters more than the headline number. J.P. Morgan Securities plc, the London broker-dealer, holds the largest single slice at 1.96% (108,124,338 shares), built from 91,435,410 ordinary shares, 42,150,245 shares' worth of convertible bonds and a depositary-receipt sliver, net of 25,461,413 shares subject to delivery claims among the joint holders. Its stated purpose is holdings tied to its securities business, not investment conviction, and the filing details an extensive lending book: shares borrowed from and lent to J.P. Morgan SE, 15,942,010 shares lent to J.P. Morgan Securities LLC, a borrow-and-lend pairing with the Tokyo-based co-filer, 71,243,574 shares borrowed from nine institutional investors, 23,693,032 shares lent to six institutions under prime brokerage, and a call option on 1,345,000 shares acquired from a single institutional counterparty.
J.P. Morgan Securities LLC in New York holds 1.75% (96,558,246 shares), split between 34,453,801 ordinary shares, 37,609 depositary receipts and 62,066,836 shares of convertible-bond exposure, with its own borrow-and-lend arrangements including 34,677,741 shares lent to sixteen institutional investors under prime brokerage. Highbridge Capital Management LLC holds 0.87% (48,274,088 shares) entirely through convertible bonds, with no direct equity position; the filing describes its holding purpose as pure investment of client assets. J.P. Morgan Investment Management Inc. holds 0.38% (20,980,070 shares, mostly ordinary stock) for the same stated purpose. J.P. Morgan SE, the Frankfurt-based bank, holds a net 0.12% (6,675,070 shares) for client asset management and client transactions, after netting a stock-lending arrangement with J.P. Morgan Securities plc. The Tokyo-based co-filer shows the smallest net position at 0.00% (101,056 shares), because 12,595,300 of its 12,696,356 gross shares are offset by delivery claims tied to an internal loan to J.P. Morgan Securities plc.
Read as a whole, the filing shows J.P. Morgan's securities, banking and investment-management arms, together with co-filer Highbridge Capital Management, touching a listed Japanese company through several legal channels at once: some of the filers hold for client investment mandates, while the broker-dealer entities run a securities-lending and options book that borrows and re-lends tens of millions of shares. Nothing in the filing states an intention to seek board representation or influence management, and the purpose fields for the broker-dealer entities are limited to "holdings related to financial instruments business."