9 institutions reported holding $3.5M of TDK CORP SPONSORED ADR (TTDKY) in SEC 13F filings for 2026-03-31. Largest institutional holders: Boston Common Asset Management, LLC ($2.6M), RHUMBLINE ADVISERS ($687,773), GAMMA Investing LLC ($152,792), Salomon & Ludwin, LLC ($28,606), THURSTON, SPRINGER, MILLER, HERD & TITAK, INC. ($4,875). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Boston Common Asset Management, LLC | $2.6M | 202,399 | Trimmed |
| 2 | RHUMBLINE ADVISERS | $687,773 | 53,185 | Added |
| 3 | GAMMA Investing LLC | $152,792 | 11,815 | Trimmed |
| 4 | Salomon & Ludwin, LLC | $28,606 | 2,283 | Added |
| 5 | THURSTON, SPRINGER, MILLER, HERD & TITAK, INC. | $4,875 | 377 | Hold |
| 6 | PNC Financial Services Group, Inc. | $4,681 | 362 | Trimmed |
| 7 | Golden State Equity Partners | $2,210 | 171 | New |
| 8 | RICHARDSON FINANCIAL SERVICES INC. | $582 | 45 | Hold |
| 9 | Copeland Capital Management, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31