Who owns UNITED GUARDIAN INC?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of UG from SEC Form 13F filings across 28 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, 28 institutions disclosed 884,148 shares of UNITED GUARDIAN INC worth $6.3M — about 19.2% of shares outstanding; the largest disclosed holder is RENAISSANCE TECHNOLOGIES LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
28
13F holders
$6.3M
value, 2026 filers
19.2%
of shares outstanding (884,148 sh)
3
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 UG's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | RENAISSANCE TECHNOLOGIES LLC | 166,766 | $1.2M | 0.0% | 3.6% | -5.1% |
| 2 | GAMCO INVESTORS, INC. ET AL | 164,388 | $1.2M | 0.0% | 3.6% | 0.0% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 128,340 | $916,348 | 0.0% | 2.8% | 0.0% |
| 4 | DIMENSIONAL FUND ADVISORS LP | 73,170 | $522,433 | 0.0% | 1.6% | +6.8% |
| 5 | Rodgers Brothers Inc. | 59,600 | $425,544 | 0.0% | 1.3% | -6.3% |
| 6 | Teton Advisors, LLC | 53,761 | $383,854 | 0.2% | 1.2% | 0.0% |
| 7 | PARTHENON LLC | 50,636 | $361,541 | 0.0% | 1.1% | 0.0% |
| 8 | GABELLI FUNDS LLC | 38,000 | $271,320 | 0.0% | 0.8% | 0.0% |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 35,424 | $252,995 | 0.0% | 0.8% | -3.2% |
| 10 | UNITED CAPITAL FINANCIAL ADVISORS, LLC | 20,070 | $143,300 | 0.0% | 0.4% | 0.0% |
| 11 | VANGUARD FIDUCIARY TRUST CO | 18,380 | $131,233 | 0.0% | 0.4% | 0.0% |
| 12 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 16,579 | $118,374 | 0.0% | 0.4% | +2.8% |
| 13 | BlackRock, Inc. | 14,714 | $105,058 | 0.0% | 0.3% | +26.1% |
| 14 | FIRST MANHATTAN CO. LLC. | 13,062 | $93,263 | 0.0% | 0.3% | -18.7% |
| 15 | HighTower Advisors, LLC | 11,000 | $78,540 | 0.0% | 0.2% | 0.0% |
| 16 | Hikari Tsushin, Inc. | 9,500 | $67,830 | 0.0% | 0.2% | 0.0% |
| 17 | CALDWELL SUTTER CAPITAL, INC. | 3,324 | $23,733 | 0.0% | 0.1% | 0.0% |
| 18 | UBS Group AG | 2,187 | $15,615 | 0.0% | 0% | +347.2% |
| 19 | Vanguard Global Advisers, LLC | 1,547 | $11,046 | 0.0% | 0% | 0.0% |
| 20 | WELLS FARGO & COMPANY/MN | 1,000 | $7,141 | 0.0% | 0% | 0.0% |
| 21 | OSAIC HOLDINGS, INC. | 998 | $7,125 | 0.0% | 0% | +232.7% |
| 22 | MORGAN STANLEY | 780 | $5,569 | 0.0% | 0% | +875.0% |
| 23 | Tower Research Capital LLC (TRC) | 555 | $3,963 | 0.0% | 0% | -45.7% |
| 24 | SBI Securities Co., Ltd. | 163 | $1,164 | 0.0% | 0% | +21.6% |
| 25 | Advantage Trust CoNEW | 100 | $714 | 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.