United GuardianUG
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 26 institutions reported holding United Guardian Inc. (UG) in their 13F filings, unchanged from Q4 2025. 0 opened new positions and 2 sold out. The largest holders were Renaissance Technologies ($1.2M), GAMCO Investors ($1.1M) and Vanguard Capital Management LLC ($851K). 2 famous investors held it, including Mario Gabelli (0.0% of GAMCO Investors's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- United Guardian Inc.
- CUSIP
- 910571108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 0 | $0 |
| Exits | 2 | $69K |
All 13F filers, Q4 2025 → Q1 2026: 5,763 shares bought and 39,693 shares sold, net −33,930 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 26 holders
| Renaissance Technologies | 0.00% | Reduce -5.8% | 175,766 | $1.2M |
| GAMCO Investors | 0.01% | Add +1.2% | 164,388 | $1.1M |
| Vanguard Capital Management LLC | 0.00% | — | 128,340 | $851K |
| Dimensional Fund Advisors LP | 0.00% | Reduce -8.6% | 68,538 | $454K |
| Rodgers Brothers Inc. | 0.05% | Reduce -13.9% | 63,600 | $426K |
| Teton Advisors, LLC | 0.25% | No change | 53,761 | $360K |
| Parthenon LLC | 0.04% | No change | 50,636 | $339K |
| Gabelli Funds LLC | 0.00% | No change | 38,000 | $255K |
| Geode Capital Management, LLC | 0.00% | Add +2.9% | 36,607 | $243K |
| United Capital Financial Advisors, LLC | 0.00% | No change | 20,070 | $134K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 18,380 | $122K |
| First Manhattan Co. Llc. | 0.00% | Reduce -5.9% | 16,062 | $108K |
| Susquehanna International Group, LLP | 0.00% | Add +10.5% | 16,120 | $107K |
| Bridgeway Capital Management, LLC | 0.00% | No change | 13,466 | $89K |
| BlackRock, Inc. | 0.00% | Add +6.4% | 11,664 | $78K |
| HighTower Advisors, LLC | 0.00% | No change | 11,000 | $73K |
| Hikari Tsushin, Inc. | 0.00% | No change | 9,500 | $64K |
| Caldwell Sutter Capital, Inc. | 0.01% | No change | 3,324 | $22K |
| Vanguard Global Advisers, LLC | 0.00% | — | 1,547 | $10K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +73.1% | 1,023 | $7K |
| Wells Fargo & Company | 0.00% | Reduce -0.1% | 1,000 | $7K |
| UBS Group AG | 0.00% | Add +46.9% | 489 | $3K |
| Osaic Holdings, Inc. | 0.00% | No change | 300 | $2K |
| SBI Securities Co., Ltd. | 0.00% | No change | 134 | $898 |
| Jones Financial Companies LLLP | 0.00% | No change | 100 | $656 |
| Morgan Stanley | 0.00% | Add +1.3% | 80 | $537 |
"% of holder's portfolio" is UG's weight in each manager's 13F, not the share of United Guardian Inc. the manager owns.