Who owns Sumitomo Corporation?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of SSUMY from SEC Form 13F filings across 9 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 9 institutions disclosed 85,997 shares of Sumitomo Corporation worth $3.3M — about 0% of shares outstanding; the largest disclosed holder is RHUMBLINE ADVISERS. Source: SEC Form 13F filings, parsed by EvidInvest.
9
13F holders
$3.3M
value, 2026 filers
0%
of shares outstanding (85,997 sh)
2
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of SSUMY's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | RHUMBLINE ADVISERS | 46,792 | $1.8M | 0.0% | 0% | +4.1% |
| 2 | Henry James International Management Inc. | 22,493 | $861,257 | 0.3% | 0% | +47.4% |
| 3 | GAMMA Investing LLC | 13,471 | $515,805 | 0.0% | 0% | +9.1% |
| 4 | ATLAS CAPITAL ADVISORS INC. | 1,751 | $65,452 | 0.0% | 0% | 0.0% |
| 5 | Salomon & Ludwin, LLC | 1,056 | $41,136 | 0.0% | 0% | +53.9% |
| 6 | PNC Financial Services Group, Inc. | 137 | $5,246 | 0.0% | 0% | +48.9% |
| 7 | First Command Advisory Services, Inc.NEW | 124 | $4,748 | 0.0% | 0% | new |
| 8 | IMA Advisory Services, Inc. | 93 | $3,561 | 0.0% | 0% | +50.0% |
| 9 | Gleason Group, Inc.NEW | 80 | $3,067 | 0.0% | 0% | new |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.